tools/perf/util/scripting-engines/trace-event-python.c

   1 /*
   2  * trace-event-python.  Feed trace events to an embedded Python interpreter.
   3  *
   4  * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <Python.h>
  23
  24 #include <inttypes.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdbool.h>
  29 #include <errno.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/compiler.h>
  32 #include <linux/time64.h>
  33 #ifdef HAVE_LIBTRACEEVENT
  34 #include <traceevent/event-parse.h>
  35 #endif
  36
  37 #include "../build-id.h"
  38 #include "../counts.h"
  39 #include "../debug.h"
  40 #include "../dso.h"
  41 #include "../callchain.h"
  42 #include "../env.h"
  43 #include "../evsel.h"
  44 #include "../event.h"
  45 #include "../thread.h"
  46 #include "../comm.h"
  47 #include "../machine.h"
  48 #include "../db-export.h"
  49 #include "../thread-stack.h"
  50 #include "../trace-event.h"
  51 #include "../call-path.h"
  52 #include "map.h"
  53 #include "symbol.h"
  54 #include "thread_map.h"
  55 #include "print_binary.h"
  56 #include "stat.h"
  57 #include "mem-events.h"
  58 #include "util/perf_regs.h"
  59
  60 #if PY_MAJOR_VERSION < 3
  61 #define _PyUnicode_FromString(arg) \
  62   PyString_FromString(arg)
  63 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  64   PyString_FromStringAndSize((arg1), (arg2))
  65 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  66   PyString_FromStringAndSize((arg1), (arg2))
  67 #define _PyLong_FromLong(arg) \
  68   PyInt_FromLong(arg)
  69 #define _PyLong_AsLong(arg) \
  70   PyInt_AsLong(arg)
  71 #define _PyCapsule_New(arg1, arg2, arg3) \
  72   PyCObject_FromVoidPtr((arg1), (arg2))
  73
  74 PyMODINIT_FUNC initperf_trace_context(void);
  75 #else
  76 #define _PyUnicode_FromString(arg) \
  77   PyUnicode_FromString(arg)
  78 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  79   PyUnicode_FromStringAndSize((arg1), (arg2))
  80 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  81   PyBytes_FromStringAndSize((arg1), (arg2))
  82 #define _PyLong_FromLong(arg) \
  83   PyLong_FromLong(arg)
  84 #define _PyLong_AsLong(arg) \
  85   PyLong_AsLong(arg)
  86 #define _PyCapsule_New(arg1, arg2, arg3) \
  87   PyCapsule_New((arg1), (arg2), (arg3))
  88
  89 PyMODINIT_FUNC PyInit_perf_trace_context(void);
  90 #endif
  91
  92 #ifdef HAVE_LIBTRACEEVENT
  93 #define TRACE_EVENT_TYPE_MAX                            \
  94         ((1 << (sizeof(unsigned short) * 8)) - 1)
  95
  96 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
  97
  98 #define N_COMMON_FIELDS 7
  99
 100 static char *cur_field_name;
 101 static int zero_flag_atom;
 102 #endif
 103
 104 #define MAX_FIELDS      64
 105
 106 extern struct scripting_context *scripting_context;
 107
 108 static PyObject *main_module, *main_dict;
 109
 110 struct tables {
 111         struct db_export        dbe;
 112         PyObject                *evsel_handler;
 113         PyObject                *machine_handler;
 114         PyObject                *thread_handler;
 115         PyObject                *comm_handler;
 116         PyObject                *comm_thread_handler;
 117         PyObject                *dso_handler;
 118         PyObject                *symbol_handler;
 119         PyObject                *branch_type_handler;
 120         PyObject                *sample_handler;
 121         PyObject                *call_path_handler;
 122         PyObject                *call_return_handler;
 123         PyObject                *synth_handler;
 124         PyObject                *context_switch_handler;
 125         bool                    db_export_mode;
 126 };
 127
 128 static struct tables tables_global;
 129
 130 static void handler_call_die(const char *handler_name) __noreturn;
 131 static void handler_call_die(const char *handler_name)
 132 {
 133         PyErr_Print();
 134         Py_FatalError("problem in Python trace event handler");
 135         // Py_FatalError does not return
 136         // but we have to make the compiler happy
 137         abort();
 138 }
 139
 140 /*
 141  * Insert val into the dictionary and decrement the reference counter.
 142  * This is necessary for dictionaries since PyDict_SetItemString() does not
 143  * steal a reference, as opposed to PyTuple_SetItem().
 144  */
 145 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
 146 {
 147         PyDict_SetItemString(dict, key, val);
 148         Py_DECREF(val);
 149 }
 150
 151 static PyObject *get_handler(const char *handler_name)
 152 {
 153         PyObject *handler;
 154
 155         handler = PyDict_GetItemString(main_dict, handler_name);
 156         if (handler && !PyCallable_Check(handler))
 157                 return NULL;
 158         return handler;
 159 }
 160
 161 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
 162 {
 163         PyObject *retval;
 164
 165         retval = PyObject_CallObject(handler, args);
 166         if (retval == NULL)
 167                 handler_call_die(die_msg);
 168         Py_DECREF(retval);
 169 }
 170
 171 static void try_call_object(const char *handler_name, PyObject *args)
 172 {
 173         PyObject *handler;
 174
 175         handler = get_handler(handler_name);
 176         if (handler)
 177                 call_object(handler, args, handler_name);
 178 }
 179
 180 #ifdef HAVE_LIBTRACEEVENT
 181 static int get_argument_count(PyObject *handler)
 182 {
 183         int arg_count = 0;
 184
 185         /*
 186          * The attribute for the code object is func_code in Python 2,
 187          * whereas it is __code__ in Python 3.0+.
 188          */
 189         PyObject *code_obj = PyObject_GetAttrString(handler,
 190                 "func_code");
 191         if (PyErr_Occurred()) {
 192                 PyErr_Clear();
 193                 code_obj = PyObject_GetAttrString(handler,
 194                         "__code__");
 195         }
 196         PyErr_Clear();
 197         if (code_obj) {
 198                 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
 199                         "co_argcount");
 200                 if (arg_count_obj) {
 201                         arg_count = (int) _PyLong_AsLong(arg_count_obj);
 202                         Py_DECREF(arg_count_obj);
 203                 }
 204                 Py_DECREF(code_obj);
 205         }
 206         return arg_count;
 207 }
 208
 209 static void define_value(enum tep_print_arg_type field_type,
 210                          const char *ev_name,
 211                          const char *field_name,
 212                          const char *field_value,
 213                          const char *field_str)
 214 {
 215         const char *handler_name = "define_flag_value";
 216         PyObject *t;
 217         unsigned long long value;
 218         unsigned n = 0;
 219
 220         if (field_type == TEP_PRINT_SYMBOL)
 221                 handler_name = "define_symbolic_value";
 222
 223         t = PyTuple_New(4);
 224         if (!t)
 225                 Py_FatalError("couldn't create Python tuple");
 226
 227         value = eval_flag(field_value);
 228
 229         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 230         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 231         PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
 232         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
 233
 234         try_call_object(handler_name, t);
 235
 236         Py_DECREF(t);
 237 }
 238
 239 static void define_values(enum tep_print_arg_type field_type,
 240                           struct tep_print_flag_sym *field,
 241                           const char *ev_name,
 242                           const char *field_name)
 243 {
 244         define_value(field_type, ev_name, field_name, field->value,
 245                      field->str);
 246
 247         if (field->next)
 248                 define_values(field_type, field->next, ev_name, field_name);
 249 }
 250
 251 static void define_field(enum tep_print_arg_type field_type,
 252                          const char *ev_name,
 253                          const char *field_name,
 254                          const char *delim)
 255 {
 256         const char *handler_name = "define_flag_field";
 257         PyObject *t;
 258         unsigned n = 0;
 259
 260         if (field_type == TEP_PRINT_SYMBOL)
 261                 handler_name = "define_symbolic_field";
 262
 263         if (field_type == TEP_PRINT_FLAGS)
 264                 t = PyTuple_New(3);
 265         else
 266                 t = PyTuple_New(2);
 267         if (!t)
 268                 Py_FatalError("couldn't create Python tuple");
 269
 270         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 271         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 272         if (field_type == TEP_PRINT_FLAGS)
 273                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
 274
 275         try_call_object(handler_name, t);
 276
 277         Py_DECREF(t);
 278 }
 279
 280 static void define_event_symbols(struct tep_event *event,
 281                                  const char *ev_name,
 282                                  struct tep_print_arg *args)
 283 {
 284         if (args == NULL)
 285                 return;
 286
 287         switch (args->type) {
 288         case TEP_PRINT_NULL:
 289                 break;
 290         case TEP_PRINT_ATOM:
 291                 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
 292                              args->atom.atom);
 293                 zero_flag_atom = 0;
 294                 break;
 295         case TEP_PRINT_FIELD:
 296                 free(cur_field_name);
 297                 cur_field_name = strdup(args->field.name);
 298                 break;
 299         case TEP_PRINT_FLAGS:
 300                 define_event_symbols(event, ev_name, args->flags.field);
 301                 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
 302                              args->flags.delim);
 303                 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
 304                               cur_field_name);
 305                 break;
 306         case TEP_PRINT_SYMBOL:
 307                 define_event_symbols(event, ev_name, args->symbol.field);
 308                 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
 309                 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
 310                               cur_field_name);
 311                 break;
 312         case TEP_PRINT_HEX:
 313         case TEP_PRINT_HEX_STR:
 314                 define_event_symbols(event, ev_name, args->hex.field);
 315                 define_event_symbols(event, ev_name, args->hex.size);
 316                 break;
 317         case TEP_PRINT_INT_ARRAY:
 318                 define_event_symbols(event, ev_name, args->int_array.field);
 319                 define_event_symbols(event, ev_name, args->int_array.count);
 320                 define_event_symbols(event, ev_name, args->int_array.el_size);
 321                 break;
 322         case TEP_PRINT_STRING:
 323                 break;
 324         case TEP_PRINT_TYPE:
 325                 define_event_symbols(event, ev_name, args->typecast.item);
 326                 break;
 327         case TEP_PRINT_OP:
 328                 if (strcmp(args->op.op, ":") == 0)
 329                         zero_flag_atom = 1;
 330                 define_event_symbols(event, ev_name, args->op.left);
 331                 define_event_symbols(event, ev_name, args->op.right);
 332                 break;
 333         default:
 334                 /* gcc warns for these? */
 335         case TEP_PRINT_BSTRING:
 336         case TEP_PRINT_DYNAMIC_ARRAY:
 337         case TEP_PRINT_DYNAMIC_ARRAY_LEN:
 338         case TEP_PRINT_FUNC:
 339         case TEP_PRINT_BITMASK:
 340                 /* we should warn... */
 341                 return;
 342         }
 343
 344         if (args->next)
 345                 define_event_symbols(event, ev_name, args->next);
 346 }
 347
 348 static PyObject *get_field_numeric_entry(struct tep_event *event,
 349                 struct tep_format_field *field, void *data)
 350 {
 351         bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
 352         PyObject *obj = NULL, *list = NULL;
 353         unsigned long long val;
 354         unsigned int item_size, n_items, i;
 355
 356         if (is_array) {
 357                 list = PyList_New(field->arraylen);
 358                 item_size = field->size / field->arraylen;
 359                 n_items = field->arraylen;
 360         } else {
 361                 item_size = field->size;
 362                 n_items = 1;
 363         }
 364
 365         for (i = 0; i < n_items; i++) {
 366
 367                 val = read_size(event, data + field->offset + i * item_size,
 368                                 item_size);
 369                 if (field->flags & TEP_FIELD_IS_SIGNED) {
 370                         if ((long long)val >= LONG_MIN &&
 371                                         (long long)val <= LONG_MAX)
 372                                 obj = _PyLong_FromLong(val);
 373                         else
 374                                 obj = PyLong_FromLongLong(val);
 375                 } else {
 376                         if (val <= LONG_MAX)
 377                                 obj = _PyLong_FromLong(val);
 378                         else
 379                                 obj = PyLong_FromUnsignedLongLong(val);
 380                 }
 381                 if (is_array)
 382                         PyList_SET_ITEM(list, i, obj);
 383         }
 384         if (is_array)
 385                 obj = list;
 386         return obj;
 387 }
 388 #endif
 389
 390 static const char *get_dsoname(struct map *map)
 391 {
 392         const char *dsoname = "[unknown]";
 393
 394         if (map && map->dso) {
 395                 if (symbol_conf.show_kernel_path && map->dso->long_name)
 396                         dsoname = map->dso->long_name;
 397                 else
 398                         dsoname = map->dso->name;
 399         }
 400
 401         return dsoname;
 402 }
 403
 404 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
 405 {
 406         unsigned long offset;
 407
 408         if (al->addr < sym->end)
 409                 offset = al->addr - sym->start;
 410         else
 411                 offset = al->addr - al->map->start - sym->start;
 412
 413         return offset;
 414 }
 415
 416 static PyObject *python_process_callchain(struct perf_sample *sample,
 417                                          struct evsel *evsel,
 418                                          struct addr_location *al)
 419 {
 420         PyObject *pylist;
 421
 422         pylist = PyList_New(0);
 423         if (!pylist)
 424                 Py_FatalError("couldn't create Python list");
 425
 426         if (!symbol_conf.use_callchain || !sample->callchain)
 427                 goto exit;
 428
 429         if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
 430                                       sample, NULL, NULL,
 431                                       scripting_max_stack) != 0) {
 432                 pr_err("Failed to resolve callchain. Skipping\n");
 433                 goto exit;
 434         }
 435         callchain_cursor_commit(&callchain_cursor);
 436
 437
 438         while (1) {
 439                 PyObject *pyelem;
 440                 struct callchain_cursor_node *node;
 441                 node = callchain_cursor_current(&callchain_cursor);
 442                 if (!node)
 443                         break;
 444
 445                 pyelem = PyDict_New();
 446                 if (!pyelem)
 447                         Py_FatalError("couldn't create Python dictionary");
 448
 449
 450                 pydict_set_item_string_decref(pyelem, "ip",
 451                                 PyLong_FromUnsignedLongLong(node->ip));
 452
 453                 if (node->ms.sym) {
 454                         PyObject *pysym  = PyDict_New();
 455                         if (!pysym)
 456                                 Py_FatalError("couldn't create Python dictionary");
 457                         pydict_set_item_string_decref(pysym, "start",
 458                                         PyLong_FromUnsignedLongLong(node->ms.sym->start));
 459                         pydict_set_item_string_decref(pysym, "end",
 460                                         PyLong_FromUnsignedLongLong(node->ms.sym->end));
 461                         pydict_set_item_string_decref(pysym, "binding",
 462                                         _PyLong_FromLong(node->ms.sym->binding));
 463                         pydict_set_item_string_decref(pysym, "name",
 464                                         _PyUnicode_FromStringAndSize(node->ms.sym->name,
 465                                                         node->ms.sym->namelen));
 466                         pydict_set_item_string_decref(pyelem, "sym", pysym);
 467
 468                         if (node->ms.map) {
 469                                 struct map *map = node->ms.map;
 470                                 struct addr_location node_al;
 471                                 unsigned long offset;
 472
 473                                 node_al.addr = map->map_ip(map, node->ip);
 474                                 node_al.map  = map;
 475                                 offset = get_offset(node->ms.sym, &node_al);
 476
 477                                 pydict_set_item_string_decref(
 478                                         pyelem, "sym_off",
 479                                         PyLong_FromUnsignedLongLong(offset));
 480                         }
 481                         if (node->srcline && strcmp(":0", node->srcline)) {
 482                                 pydict_set_item_string_decref(
 483                                         pyelem, "sym_srcline",
 484                                         _PyUnicode_FromString(node->srcline));
 485                         }
 486                 }
 487
 488                 if (node->ms.map) {
 489                         const char *dsoname = get_dsoname(node->ms.map);
 490
 491                         pydict_set_item_string_decref(pyelem, "dso",
 492                                         _PyUnicode_FromString(dsoname));
 493                 }
 494
 495                 callchain_cursor_advance(&callchain_cursor);
 496                 PyList_Append(pylist, pyelem);
 497                 Py_DECREF(pyelem);
 498         }
 499
 500 exit:
 501         return pylist;
 502 }
 503
 504 static PyObject *python_process_brstack(struct perf_sample *sample,
 505                                         struct thread *thread)
 506 {
 507         struct branch_stack *br = sample->branch_stack;
 508         struct branch_entry *entries = perf_sample__branch_entries(sample);
 509         PyObject *pylist;
 510         u64 i;
 511
 512         pylist = PyList_New(0);
 513         if (!pylist)
 514                 Py_FatalError("couldn't create Python list");
 515
 516         if (!(br && br->nr))
 517                 goto exit;
 518
 519         for (i = 0; i < br->nr; i++) {
 520                 PyObject *pyelem;
 521                 struct addr_location al;
 522                 const char *dsoname;
 523
 524                 pyelem = PyDict_New();
 525                 if (!pyelem)
 526                         Py_FatalError("couldn't create Python dictionary");
 527
 528                 pydict_set_item_string_decref(pyelem, "from",
 529                     PyLong_FromUnsignedLongLong(entries[i].from));
 530                 pydict_set_item_string_decref(pyelem, "to",
 531                     PyLong_FromUnsignedLongLong(entries[i].to));
 532                 pydict_set_item_string_decref(pyelem, "mispred",
 533                     PyBool_FromLong(entries[i].flags.mispred));
 534                 pydict_set_item_string_decref(pyelem, "predicted",
 535                     PyBool_FromLong(entries[i].flags.predicted));
 536                 pydict_set_item_string_decref(pyelem, "in_tx",
 537                     PyBool_FromLong(entries[i].flags.in_tx));
 538                 pydict_set_item_string_decref(pyelem, "abort",
 539                     PyBool_FromLong(entries[i].flags.abort));
 540                 pydict_set_item_string_decref(pyelem, "cycles",
 541                     PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
 542
 543                 thread__find_map_fb(thread, sample->cpumode,
 544                                     entries[i].from, &al);
 545                 dsoname = get_dsoname(al.map);
 546                 pydict_set_item_string_decref(pyelem, "from_dsoname",
 547                                               _PyUnicode_FromString(dsoname));
 548
 549                 thread__find_map_fb(thread, sample->cpumode,
 550                                     entries[i].to, &al);
 551                 dsoname = get_dsoname(al.map);
 552                 pydict_set_item_string_decref(pyelem, "to_dsoname",
 553                                               _PyUnicode_FromString(dsoname));
 554
 555                 PyList_Append(pylist, pyelem);
 556                 Py_DECREF(pyelem);
 557         }
 558
 559 exit:
 560         return pylist;
 561 }
 562
 563 static int get_symoff(struct symbol *sym, struct addr_location *al,
 564                       bool print_off, char *bf, int size)
 565 {
 566         unsigned long offset;
 567
 568         if (!sym || !sym->name[0])
 569                 return scnprintf(bf, size, "%s", "[unknown]");
 570
 571         if (!print_off)
 572                 return scnprintf(bf, size, "%s", sym->name);
 573
 574         offset = get_offset(sym, al);
 575
 576         return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
 577 }
 578
 579 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
 580 {
 581         if (!flags->mispred  && !flags->predicted)
 582                 return scnprintf(bf, size, "%s", "-");
 583
 584         if (flags->mispred)
 585                 return scnprintf(bf, size, "%s", "M");
 586
 587         return scnprintf(bf, size, "%s", "P");
 588 }
 589
 590 static PyObject *python_process_brstacksym(struct perf_sample *sample,
 591                                            struct thread *thread)
 592 {
 593         struct branch_stack *br = sample->branch_stack;
 594         struct branch_entry *entries = perf_sample__branch_entries(sample);
 595         PyObject *pylist;
 596         u64 i;
 597         char bf[512];
 598         struct addr_location al;
 599
 600         pylist = PyList_New(0);
 601         if (!pylist)
 602                 Py_FatalError("couldn't create Python list");
 603
 604         if (!(br && br->nr))
 605                 goto exit;
 606
 607         for (i = 0; i < br->nr; i++) {
 608                 PyObject *pyelem;
 609
 610                 pyelem = PyDict_New();
 611                 if (!pyelem)
 612                         Py_FatalError("couldn't create Python dictionary");
 613
 614                 thread__find_symbol_fb(thread, sample->cpumode,
 615                                        entries[i].from, &al);
 616                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 617                 pydict_set_item_string_decref(pyelem, "from",
 618                                               _PyUnicode_FromString(bf));
 619
 620                 thread__find_symbol_fb(thread, sample->cpumode,
 621                                        entries[i].to, &al);
 622                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 623                 pydict_set_item_string_decref(pyelem, "to",
 624                                               _PyUnicode_FromString(bf));
 625
 626                 get_br_mspred(&entries[i].flags, bf, sizeof(bf));
 627                 pydict_set_item_string_decref(pyelem, "pred",
 628                                               _PyUnicode_FromString(bf));
 629
 630                 if (entries[i].flags.in_tx) {
 631                         pydict_set_item_string_decref(pyelem, "in_tx",
 632                                               _PyUnicode_FromString("X"));
 633                 } else {
 634                         pydict_set_item_string_decref(pyelem, "in_tx",
 635                                               _PyUnicode_FromString("-"));
 636                 }
 637
 638                 if (entries[i].flags.abort) {
 639                         pydict_set_item_string_decref(pyelem, "abort",
 640                                               _PyUnicode_FromString("A"));
 641                 } else {
 642                         pydict_set_item_string_decref(pyelem, "abort",
 643                                               _PyUnicode_FromString("-"));
 644                 }
 645
 646                 PyList_Append(pylist, pyelem);
 647                 Py_DECREF(pyelem);
 648         }
 649
 650 exit:
 651         return pylist;
 652 }
 653
 654 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
 655                                            u64 read_format)
 656 {
 657         PyObject *t;
 658
 659         t = PyTuple_New(3);
 660         if (!t)
 661                 Py_FatalError("couldn't create Python tuple");
 662         PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
 663         PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
 664         if (read_format & PERF_FORMAT_LOST)
 665                 PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
 666
 667         return t;
 668 }
 669
 670 static void set_sample_read_in_dict(PyObject *dict_sample,
 671                                          struct perf_sample *sample,
 672                                          struct evsel *evsel)
 673 {
 674         u64 read_format = evsel->core.attr.read_format;
 675         PyObject *values;
 676         unsigned int i;
 677
 678         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 679                 pydict_set_item_string_decref(dict_sample, "time_enabled",
 680                         PyLong_FromUnsignedLongLong(sample->read.time_enabled));
 681         }
 682
 683         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 684                 pydict_set_item_string_decref(dict_sample, "time_running",
 685                         PyLong_FromUnsignedLongLong(sample->read.time_running));
 686         }
 687
 688         if (read_format & PERF_FORMAT_GROUP)
 689                 values = PyList_New(sample->read.group.nr);
 690         else
 691                 values = PyList_New(1);
 692
 693         if (!values)
 694                 Py_FatalError("couldn't create Python list");
 695
 696         if (read_format & PERF_FORMAT_GROUP) {
 697                 struct sample_read_value *v = sample->read.group.values;
 698
 699                 i = 0;
 700                 sample_read_group__for_each(v, sample->read.group.nr, read_format) {
 701                         PyObject *t = get_sample_value_as_tuple(v, read_format);
 702                         PyList_SET_ITEM(values, i, t);
 703                         i++;
 704                 }
 705         } else {
 706                 PyObject *t = get_sample_value_as_tuple(&sample->read.one,
 707                                                         read_format);
 708                 PyList_SET_ITEM(values, 0, t);
 709         }
 710         pydict_set_item_string_decref(dict_sample, "values", values);
 711 }
 712
 713 static void set_sample_datasrc_in_dict(PyObject *dict,
 714                                        struct perf_sample *sample)
 715 {
 716         struct mem_info mi = { .data_src.val = sample->data_src };
 717         char decode[100];
 718
 719         pydict_set_item_string_decref(dict, "datasrc",
 720                         PyLong_FromUnsignedLongLong(sample->data_src));
 721
 722         perf_script__meminfo_scnprintf(decode, 100, &mi);
 723
 724         pydict_set_item_string_decref(dict, "datasrc_decode",
 725                         _PyUnicode_FromString(decode));
 726 }
 727
 728 static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
 729 {
 730         unsigned int i = 0, r;
 731         int printed = 0;
 732
 733         bf[0] = 0;
 734
 735         if (!regs || !regs->regs)
 736                 return;
 737
 738         for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 739                 u64 val = regs->regs[i++];
 740
 741                 printed += scnprintf(bf + printed, size - printed,
 742                                      "%5s:0x%" PRIx64 " ",
 743                                      perf_reg_name(r, arch), val);
 744         }
 745 }
 746
 747 static void set_regs_in_dict(PyObject *dict,
 748                              struct perf_sample *sample,
 749                              struct evsel *evsel)
 750 {
 751         struct perf_event_attr *attr = &evsel->core.attr;
 752         const char *arch = perf_env__arch(evsel__env(evsel));
 753
 754         /*
 755          * Here value 28 is a constant size which can be used to print
 756          * one register value and its corresponds to:
 757          * 16 chars is to specify 64 bit register in hexadecimal.
 758          * 2 chars is for appending "0x" to the hexadecimal value and
 759          * 10 chars is for register name.
 760          */
 761         int size = __sw_hweight64(attr->sample_regs_intr) * 28;
 762         char bf[size];
 763
 764         regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, sizeof(bf));
 765
 766         pydict_set_item_string_decref(dict, "iregs",
 767                         _PyUnicode_FromString(bf));
 768
 769         regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, sizeof(bf));
 770
 771         pydict_set_item_string_decref(dict, "uregs",
 772                         _PyUnicode_FromString(bf));
 773 }
 774
 775 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
 776                             const char *dso_field, const char *dso_bid_field,
 777                             const char *dso_map_start, const char *dso_map_end,
 778                             const char *sym_field, const char *symoff_field)
 779 {
 780         char sbuild_id[SBUILD_ID_SIZE];
 781
 782         if (al->map) {
 783                 pydict_set_item_string_decref(dict, dso_field,
 784                         _PyUnicode_FromString(al->map->dso->name));
 785                 build_id__sprintf(&al->map->dso->bid, sbuild_id);
 786                 pydict_set_item_string_decref(dict, dso_bid_field,
 787                         _PyUnicode_FromString(sbuild_id));
 788                 pydict_set_item_string_decref(dict, dso_map_start,
 789                         PyLong_FromUnsignedLong(al->map->start));
 790                 pydict_set_item_string_decref(dict, dso_map_end,
 791                         PyLong_FromUnsignedLong(al->map->end));
 792         }
 793         if (al->sym) {
 794                 pydict_set_item_string_decref(dict, sym_field,
 795                         _PyUnicode_FromString(al->sym->name));
 796                 pydict_set_item_string_decref(dict, symoff_field,
 797                         PyLong_FromUnsignedLong(get_offset(al->sym, al)));
 798         }
 799 }
 800
 801 static void set_sample_flags(PyObject *dict, u32 flags)
 802 {
 803         const char *ch = PERF_IP_FLAG_CHARS;
 804         char *p, str[33];
 805
 806         for (p = str; *ch; ch++, flags >>= 1) {
 807                 if (flags & 1)
 808                         *p++ = *ch;
 809         }
 810         *p = 0;
 811         pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
 812 }
 813
 814 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
 815 {
 816         char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
 817
 818         set_sample_flags(dict_sample, sample->flags);
 819         perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
 820         pydict_set_item_string_decref(dict_sample, "flags_disp",
 821                 _PyUnicode_FromString(flags_disp));
 822 }
 823
 824 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 825                                          struct evsel *evsel,
 826                                          struct addr_location *al,
 827                                          struct addr_location *addr_al,
 828                                          PyObject *callchain)
 829 {
 830         PyObject *dict, *dict_sample, *brstack, *brstacksym;
 831
 832         dict = PyDict_New();
 833         if (!dict)
 834                 Py_FatalError("couldn't create Python dictionary");
 835
 836         dict_sample = PyDict_New();
 837         if (!dict_sample)
 838                 Py_FatalError("couldn't create Python dictionary");
 839
 840         pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 841         pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 842
 843         pydict_set_item_string_decref(dict_sample, "pid",
 844                         _PyLong_FromLong(sample->pid));
 845         pydict_set_item_string_decref(dict_sample, "tid",
 846                         _PyLong_FromLong(sample->tid));
 847         pydict_set_item_string_decref(dict_sample, "cpu",
 848                         _PyLong_FromLong(sample->cpu));
 849         pydict_set_item_string_decref(dict_sample, "ip",
 850                         PyLong_FromUnsignedLongLong(sample->ip));
 851         pydict_set_item_string_decref(dict_sample, "time",
 852                         PyLong_FromUnsignedLongLong(sample->time));
 853         pydict_set_item_string_decref(dict_sample, "period",
 854                         PyLong_FromUnsignedLongLong(sample->period));
 855         pydict_set_item_string_decref(dict_sample, "phys_addr",
 856                         PyLong_FromUnsignedLongLong(sample->phys_addr));
 857         pydict_set_item_string_decref(dict_sample, "addr",
 858                         PyLong_FromUnsignedLongLong(sample->addr));
 859         set_sample_read_in_dict(dict_sample, sample, evsel);
 860         pydict_set_item_string_decref(dict_sample, "weight",
 861                         PyLong_FromUnsignedLongLong(sample->weight));
 862         pydict_set_item_string_decref(dict_sample, "transaction",
 863                         PyLong_FromUnsignedLongLong(sample->transaction));
 864         set_sample_datasrc_in_dict(dict_sample, sample);
 865         pydict_set_item_string_decref(dict, "sample", dict_sample);
 866
 867         pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 868                         (const char *)sample->raw_data, sample->raw_size));
 869         pydict_set_item_string_decref(dict, "comm",
 870                         _PyUnicode_FromString(thread__comm_str(al->thread)));
 871         set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
 872                         "symbol", "symoff");
 873
 874         pydict_set_item_string_decref(dict, "callchain", callchain);
 875
 876         brstack = python_process_brstack(sample, al->thread);
 877         pydict_set_item_string_decref(dict, "brstack", brstack);
 878
 879         brstacksym = python_process_brstacksym(sample, al->thread);
 880         pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 881
 882         if (sample->machine_pid) {
 883                 pydict_set_item_string_decref(dict_sample, "machine_pid",
 884                                 _PyLong_FromLong(sample->machine_pid));
 885                 pydict_set_item_string_decref(dict_sample, "vcpu",
 886                                 _PyLong_FromLong(sample->vcpu));
 887         }
 888
 889         pydict_set_item_string_decref(dict_sample, "cpumode",
 890                         _PyLong_FromLong((unsigned long)sample->cpumode));
 891
 892         if (addr_al) {
 893                 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 894                         PyBool_FromLong(1));
 895                 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
 896                                 "addr_dso_map_start", "addr_dso_map_end",
 897                                 "addr_symbol", "addr_symoff");
 898         }
 899
 900         if (sample->flags)
 901                 python_process_sample_flags(sample, dict_sample);
 902
 903         /* Instructions per cycle (IPC) */
 904         if (sample->insn_cnt && sample->cyc_cnt) {
 905                 pydict_set_item_string_decref(dict_sample, "insn_cnt",
 906                         PyLong_FromUnsignedLongLong(sample->insn_cnt));
 907                 pydict_set_item_string_decref(dict_sample, "cyc_cnt",
 908                         PyLong_FromUnsignedLongLong(sample->cyc_cnt));
 909         }
 910
 911         set_regs_in_dict(dict, sample, evsel);
 912
 913         return dict;
 914 }
 915
 916 #ifdef HAVE_LIBTRACEEVENT
 917 static void python_process_tracepoint(struct perf_sample *sample,
 918                                       struct evsel *evsel,
 919                                       struct addr_location *al,
 920                                       struct addr_location *addr_al)
 921 {
 922         struct tep_event *event = evsel->tp_format;
 923         PyObject *handler, *context, *t, *obj = NULL, *callchain;
 924         PyObject *dict = NULL, *all_entries_dict = NULL;
 925         static char handler_name[256];
 926         struct tep_format_field *field;
 927         unsigned long s, ns;
 928         unsigned n = 0;
 929         int pid;
 930         int cpu = sample->cpu;
 931         void *data = sample->raw_data;
 932         unsigned long long nsecs = sample->time;
 933         const char *comm = thread__comm_str(al->thread);
 934         const char *default_handler_name = "trace_unhandled";
 935
 936         if (!event) {
 937                 snprintf(handler_name, sizeof(handler_name),
 938                          "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 939                 Py_FatalError(handler_name);
 940         }
 941
 942         pid = raw_field_value(event, "common_pid", data);
 943
 944         sprintf(handler_name, "%s__%s", event->system, event->name);
 945
 946         if (!__test_and_set_bit(event->id, events_defined))
 947                 define_event_symbols(event, handler_name, event->print_fmt.args);
 948
 949         handler = get_handler(handler_name);
 950         if (!handler) {
 951                 handler = get_handler(default_handler_name);
 952                 if (!handler)
 953                         return;
 954                 dict = PyDict_New();
 955                 if (!dict)
 956                         Py_FatalError("couldn't create Python dict");
 957         }
 958
 959         t = PyTuple_New(MAX_FIELDS);
 960         if (!t)
 961                 Py_FatalError("couldn't create Python tuple");
 962
 963
 964         s = nsecs / NSEC_PER_SEC;
 965         ns = nsecs - s * NSEC_PER_SEC;
 966
 967         context = _PyCapsule_New(scripting_context, NULL, NULL);
 968
 969         PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 970         PyTuple_SetItem(t, n++, context);
 971
 972         /* ip unwinding */
 973         callchain = python_process_callchain(sample, evsel, al);
 974         /* Need an additional reference for the perf_sample dict */
 975         Py_INCREF(callchain);
 976
 977         if (!dict) {
 978                 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
 979                 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
 980                 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
 981                 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
 982                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
 983                 PyTuple_SetItem(t, n++, callchain);
 984         } else {
 985                 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
 986                 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
 987                 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
 988                 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
 989                 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
 990                 pydict_set_item_string_decref(dict, "common_callchain", callchain);
 991         }
 992         for (field = event->format.fields; field; field = field->next) {
 993                 unsigned int offset, len;
 994                 unsigned long long val;
 995
 996                 if (field->flags & TEP_FIELD_IS_ARRAY) {
 997                         offset = field->offset;
 998                         len    = field->size;
 999                         if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1000                                 val     = tep_read_number(scripting_context->pevent,
1001                                                           data + offset, len);
1002                                 offset  = val;
1003                                 len     = offset >> 16;
1004                                 offset &= 0xffff;
1005                                 if (tep_field_is_relative(field->flags))
1006                                         offset += field->offset + field->size;
1007                         }
1008                         if (field->flags & TEP_FIELD_IS_STRING &&
1009                             is_printable_array(data + offset, len)) {
1010                                 obj = _PyUnicode_FromString((char *) data + offset);
1011                         } else {
1012                                 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1013                                 field->flags &= ~TEP_FIELD_IS_STRING;
1014                         }
1015                 } else { /* FIELD_IS_NUMERIC */
1016                         obj = get_field_numeric_entry(event, field, data);
1017                 }
1018                 if (!dict)
1019                         PyTuple_SetItem(t, n++, obj);
1020                 else
1021                         pydict_set_item_string_decref(dict, field->name, obj);
1022
1023         }
1024
1025         if (dict)
1026                 PyTuple_SetItem(t, n++, dict);
1027
1028         if (get_argument_count(handler) == (int) n + 1) {
1029                 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1030                         callchain);
1031                 PyTuple_SetItem(t, n++, all_entries_dict);
1032         } else {
1033                 Py_DECREF(callchain);
1034         }
1035
1036         if (_PyTuple_Resize(&t, n) == -1)
1037                 Py_FatalError("error resizing Python tuple");
1038
1039         if (!dict)
1040                 call_object(handler, t, handler_name);
1041         else
1042                 call_object(handler, t, default_handler_name);
1043
1044         Py_DECREF(t);
1045 }
1046 #else
1047 static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1048                                       struct evsel *evsel __maybe_unused,
1049                                       struct addr_location *al __maybe_unused,
1050                                       struct addr_location *addr_al __maybe_unused)
1051 {
1052         fprintf(stderr, "Tracepoint events are not supported because "
1053                         "perf is not linked with libtraceevent.\n");
1054 }
1055 #endif
1056
1057 static PyObject *tuple_new(unsigned int sz)
1058 {
1059         PyObject *t;
1060
1061         t = PyTuple_New(sz);
1062         if (!t)
1063                 Py_FatalError("couldn't create Python tuple");
1064         return t;
1065 }
1066
1067 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1068 {
1069 #if BITS_PER_LONG == 64
1070         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1071 #endif
1072 #if BITS_PER_LONG == 32
1073         return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1074 #endif
1075 }
1076
1077 /*
1078  * Databases support only signed 64-bit numbers, so even though we are
1079  * exporting a u64, it must be as s64.
1080  */
1081 #define tuple_set_d64 tuple_set_s64
1082
1083 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1084 {
1085 #if BITS_PER_LONG == 64
1086         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1087 #endif
1088 #if BITS_PER_LONG == 32
1089         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1090 #endif
1091 }
1092
1093 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1094 {
1095         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1096 }
1097
1098 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1099 {
1100         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1101 }
1102
1103 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1104 {
1105         return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1106 }
1107
1108 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1109 {
1110         return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1111 }
1112
1113 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1114                            unsigned int sz)
1115 {
1116         return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1117 }
1118
1119 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1120 {
1121         struct tables *tables = container_of(dbe, struct tables, dbe);
1122         PyObject *t;
1123
1124         t = tuple_new(2);
1125
1126         tuple_set_d64(t, 0, evsel->db_id);
1127         tuple_set_string(t, 1, evsel__name(evsel));
1128
1129         call_object(tables->evsel_handler, t, "evsel_table");
1130
1131         Py_DECREF(t);
1132
1133         return 0;
1134 }
1135
1136 static int python_export_machine(struct db_export *dbe,
1137                                  struct machine *machine)
1138 {
1139         struct tables *tables = container_of(dbe, struct tables, dbe);
1140         PyObject *t;
1141
1142         t = tuple_new(3);
1143
1144         tuple_set_d64(t, 0, machine->db_id);
1145         tuple_set_s32(t, 1, machine->pid);
1146         tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1147
1148         call_object(tables->machine_handler, t, "machine_table");
1149
1150         Py_DECREF(t);
1151
1152         return 0;
1153 }
1154
1155 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1156                                 u64 main_thread_db_id, struct machine *machine)
1157 {
1158         struct tables *tables = container_of(dbe, struct tables, dbe);
1159         PyObject *t;
1160
1161         t = tuple_new(5);
1162
1163         tuple_set_d64(t, 0, thread->db_id);
1164         tuple_set_d64(t, 1, machine->db_id);
1165         tuple_set_d64(t, 2, main_thread_db_id);
1166         tuple_set_s32(t, 3, thread->pid_);
1167         tuple_set_s32(t, 4, thread->tid);
1168
1169         call_object(tables->thread_handler, t, "thread_table");
1170
1171         Py_DECREF(t);
1172
1173         return 0;
1174 }
1175
1176 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1177                               struct thread *thread)
1178 {
1179         struct tables *tables = container_of(dbe, struct tables, dbe);
1180         PyObject *t;
1181
1182         t = tuple_new(5);
1183
1184         tuple_set_d64(t, 0, comm->db_id);
1185         tuple_set_string(t, 1, comm__str(comm));
1186         tuple_set_d64(t, 2, thread->db_id);
1187         tuple_set_d64(t, 3, comm->start);
1188         tuple_set_s32(t, 4, comm->exec);
1189
1190         call_object(tables->comm_handler, t, "comm_table");
1191
1192         Py_DECREF(t);
1193
1194         return 0;
1195 }
1196
1197 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1198                                      struct comm *comm, struct thread *thread)
1199 {
1200         struct tables *tables = container_of(dbe, struct tables, dbe);
1201         PyObject *t;
1202
1203         t = tuple_new(3);
1204
1205         tuple_set_d64(t, 0, db_id);
1206         tuple_set_d64(t, 1, comm->db_id);
1207         tuple_set_d64(t, 2, thread->db_id);
1208
1209         call_object(tables->comm_thread_handler, t, "comm_thread_table");
1210
1211         Py_DECREF(t);
1212
1213         return 0;
1214 }
1215
1216 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1217                              struct machine *machine)
1218 {
1219         struct tables *tables = container_of(dbe, struct tables, dbe);
1220         char sbuild_id[SBUILD_ID_SIZE];
1221         PyObject *t;
1222
1223         build_id__sprintf(&dso->bid, sbuild_id);
1224
1225         t = tuple_new(5);
1226
1227         tuple_set_d64(t, 0, dso->db_id);
1228         tuple_set_d64(t, 1, machine->db_id);
1229         tuple_set_string(t, 2, dso->short_name);
1230         tuple_set_string(t, 3, dso->long_name);
1231         tuple_set_string(t, 4, sbuild_id);
1232
1233         call_object(tables->dso_handler, t, "dso_table");
1234
1235         Py_DECREF(t);
1236
1237         return 0;
1238 }
1239
1240 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1241                                 struct dso *dso)
1242 {
1243         struct tables *tables = container_of(dbe, struct tables, dbe);
1244         u64 *sym_db_id = symbol__priv(sym);
1245         PyObject *t;
1246
1247         t = tuple_new(6);
1248
1249         tuple_set_d64(t, 0, *sym_db_id);
1250         tuple_set_d64(t, 1, dso->db_id);
1251         tuple_set_d64(t, 2, sym->start);
1252         tuple_set_d64(t, 3, sym->end);
1253         tuple_set_s32(t, 4, sym->binding);
1254         tuple_set_string(t, 5, sym->name);
1255
1256         call_object(tables->symbol_handler, t, "symbol_table");
1257
1258         Py_DECREF(t);
1259
1260         return 0;
1261 }
1262
1263 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1264                                      const char *name)
1265 {
1266         struct tables *tables = container_of(dbe, struct tables, dbe);
1267         PyObject *t;
1268
1269         t = tuple_new(2);
1270
1271         tuple_set_s32(t, 0, branch_type);
1272         tuple_set_string(t, 1, name);
1273
1274         call_object(tables->branch_type_handler, t, "branch_type_table");
1275
1276         Py_DECREF(t);
1277
1278         return 0;
1279 }
1280
1281 static void python_export_sample_table(struct db_export *dbe,
1282                                        struct export_sample *es)
1283 {
1284         struct tables *tables = container_of(dbe, struct tables, dbe);
1285         PyObject *t;
1286
1287         t = tuple_new(25);
1288
1289         tuple_set_d64(t, 0, es->db_id);
1290         tuple_set_d64(t, 1, es->evsel->db_id);
1291         tuple_set_d64(t, 2, es->al->maps->machine->db_id);
1292         tuple_set_d64(t, 3, es->al->thread->db_id);
1293         tuple_set_d64(t, 4, es->comm_db_id);
1294         tuple_set_d64(t, 5, es->dso_db_id);
1295         tuple_set_d64(t, 6, es->sym_db_id);
1296         tuple_set_d64(t, 7, es->offset);
1297         tuple_set_d64(t, 8, es->sample->ip);
1298         tuple_set_d64(t, 9, es->sample->time);
1299         tuple_set_s32(t, 10, es->sample->cpu);
1300         tuple_set_d64(t, 11, es->addr_dso_db_id);
1301         tuple_set_d64(t, 12, es->addr_sym_db_id);
1302         tuple_set_d64(t, 13, es->addr_offset);
1303         tuple_set_d64(t, 14, es->sample->addr);
1304         tuple_set_d64(t, 15, es->sample->period);
1305         tuple_set_d64(t, 16, es->sample->weight);
1306         tuple_set_d64(t, 17, es->sample->transaction);
1307         tuple_set_d64(t, 18, es->sample->data_src);
1308         tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1309         tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1310         tuple_set_d64(t, 21, es->call_path_id);
1311         tuple_set_d64(t, 22, es->sample->insn_cnt);
1312         tuple_set_d64(t, 23, es->sample->cyc_cnt);
1313         tuple_set_s32(t, 24, es->sample->flags);
1314
1315         call_object(tables->sample_handler, t, "sample_table");
1316
1317         Py_DECREF(t);
1318 }
1319
1320 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1321 {
1322         struct tables *tables = container_of(dbe, struct tables, dbe);
1323         PyObject *t;
1324
1325         t = tuple_new(3);
1326
1327         tuple_set_d64(t, 0, es->db_id);
1328         tuple_set_d64(t, 1, es->evsel->core.attr.config);
1329         tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1330
1331         call_object(tables->synth_handler, t, "synth_data");
1332
1333         Py_DECREF(t);
1334 }
1335
1336 static int python_export_sample(struct db_export *dbe,
1337                                 struct export_sample *es)
1338 {
1339         struct tables *tables = container_of(dbe, struct tables, dbe);
1340
1341         python_export_sample_table(dbe, es);
1342
1343         if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1344                 python_export_synth(dbe, es);
1345
1346         return 0;
1347 }
1348
1349 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1350 {
1351         struct tables *tables = container_of(dbe, struct tables, dbe);
1352         PyObject *t;
1353         u64 parent_db_id, sym_db_id;
1354
1355         parent_db_id = cp->parent ? cp->parent->db_id : 0;
1356         sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1357
1358         t = tuple_new(4);
1359
1360         tuple_set_d64(t, 0, cp->db_id);
1361         tuple_set_d64(t, 1, parent_db_id);
1362         tuple_set_d64(t, 2, sym_db_id);
1363         tuple_set_d64(t, 3, cp->ip);
1364
1365         call_object(tables->call_path_handler, t, "call_path_table");
1366
1367         Py_DECREF(t);
1368
1369         return 0;
1370 }
1371
1372 static int python_export_call_return(struct db_export *dbe,
1373                                      struct call_return *cr)
1374 {
1375         struct tables *tables = container_of(dbe, struct tables, dbe);
1376         u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1377         PyObject *t;
1378
1379         t = tuple_new(14);
1380
1381         tuple_set_d64(t, 0, cr->db_id);
1382         tuple_set_d64(t, 1, cr->thread->db_id);
1383         tuple_set_d64(t, 2, comm_db_id);
1384         tuple_set_d64(t, 3, cr->cp->db_id);
1385         tuple_set_d64(t, 4, cr->call_time);
1386         tuple_set_d64(t, 5, cr->return_time);
1387         tuple_set_d64(t, 6, cr->branch_count);
1388         tuple_set_d64(t, 7, cr->call_ref);
1389         tuple_set_d64(t, 8, cr->return_ref);
1390         tuple_set_d64(t, 9, cr->cp->parent->db_id);
1391         tuple_set_s32(t, 10, cr->flags);
1392         tuple_set_d64(t, 11, cr->parent_db_id);
1393         tuple_set_d64(t, 12, cr->insn_count);
1394         tuple_set_d64(t, 13, cr->cyc_count);
1395
1396         call_object(tables->call_return_handler, t, "call_return_table");
1397
1398         Py_DECREF(t);
1399
1400         return 0;
1401 }
1402
1403 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1404                                         struct machine *machine,
1405                                         struct perf_sample *sample,
1406                                         u64 th_out_id, u64 comm_out_id,
1407                                         u64 th_in_id, u64 comm_in_id, int flags)
1408 {
1409         struct tables *tables = container_of(dbe, struct tables, dbe);
1410         PyObject *t;
1411
1412         t = tuple_new(9);
1413
1414         tuple_set_d64(t, 0, db_id);
1415         tuple_set_d64(t, 1, machine->db_id);
1416         tuple_set_d64(t, 2, sample->time);
1417         tuple_set_s32(t, 3, sample->cpu);
1418         tuple_set_d64(t, 4, th_out_id);
1419         tuple_set_d64(t, 5, comm_out_id);
1420         tuple_set_d64(t, 6, th_in_id);
1421         tuple_set_d64(t, 7, comm_in_id);
1422         tuple_set_s32(t, 8, flags);
1423
1424         call_object(tables->context_switch_handler, t, "context_switch");
1425
1426         Py_DECREF(t);
1427
1428         return 0;
1429 }
1430
1431 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1432                                       void *data)
1433 {
1434         struct db_export *dbe = data;
1435
1436         return db_export__call_return(dbe, cr, parent_db_id);
1437 }
1438
1439 static void python_process_general_event(struct perf_sample *sample,
1440                                          struct evsel *evsel,
1441                                          struct addr_location *al,
1442                                          struct addr_location *addr_al)
1443 {
1444         PyObject *handler, *t, *dict, *callchain;
1445         static char handler_name[64];
1446         unsigned n = 0;
1447
1448         snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1449
1450         handler = get_handler(handler_name);
1451         if (!handler)
1452                 return;
1453
1454         /*
1455          * Use the MAX_FIELDS to make the function expandable, though
1456          * currently there is only one item for the tuple.
1457          */
1458         t = PyTuple_New(MAX_FIELDS);
1459         if (!t)
1460                 Py_FatalError("couldn't create Python tuple");
1461
1462         /* ip unwinding */
1463         callchain = python_process_callchain(sample, evsel, al);
1464         dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1465
1466         PyTuple_SetItem(t, n++, dict);
1467         if (_PyTuple_Resize(&t, n) == -1)
1468                 Py_FatalError("error resizing Python tuple");
1469
1470         call_object(handler, t, handler_name);
1471
1472         Py_DECREF(t);
1473 }
1474
1475 static void python_process_event(union perf_event *event,
1476                                  struct perf_sample *sample,
1477                                  struct evsel *evsel,
1478                                  struct addr_location *al,
1479                                  struct addr_location *addr_al)
1480 {
1481         struct tables *tables = &tables_global;
1482
1483         scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1484
1485         switch (evsel->core.attr.type) {
1486         case PERF_TYPE_TRACEPOINT:
1487                 python_process_tracepoint(sample, evsel, al, addr_al);
1488                 break;
1489         /* Reserve for future process_hw/sw/raw APIs */
1490         default:
1491                 if (tables->db_export_mode)
1492                         db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1493                 else
1494                         python_process_general_event(sample, evsel, al, addr_al);
1495         }
1496 }
1497
1498 static void python_process_throttle(union perf_event *event,
1499                                     struct perf_sample *sample,
1500                                     struct machine *machine)
1501 {
1502         const char *handler_name;
1503         PyObject *handler, *t;
1504
1505         if (event->header.type == PERF_RECORD_THROTTLE)
1506                 handler_name = "throttle";
1507         else
1508                 handler_name = "unthrottle";
1509         handler = get_handler(handler_name);
1510         if (!handler)
1511                 return;
1512
1513         t = tuple_new(6);
1514         if (!t)
1515                 return;
1516
1517         tuple_set_u64(t, 0, event->throttle.time);
1518         tuple_set_u64(t, 1, event->throttle.id);
1519         tuple_set_u64(t, 2, event->throttle.stream_id);
1520         tuple_set_s32(t, 3, sample->cpu);
1521         tuple_set_s32(t, 4, sample->pid);
1522         tuple_set_s32(t, 5, sample->tid);
1523
1524         call_object(handler, t, handler_name);
1525
1526         Py_DECREF(t);
1527 }
1528
1529 static void python_do_process_switch(union perf_event *event,
1530                                      struct perf_sample *sample,
1531                                      struct machine *machine)
1532 {
1533         const char *handler_name = "context_switch";
1534         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1535         bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1536         pid_t np_pid = -1, np_tid = -1;
1537         PyObject *handler, *t;
1538
1539         handler = get_handler(handler_name);
1540         if (!handler)
1541                 return;
1542
1543         if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1544                 np_pid = event->context_switch.next_prev_pid;
1545                 np_tid = event->context_switch.next_prev_tid;
1546         }
1547
1548         t = tuple_new(11);
1549         if (!t)
1550                 return;
1551
1552         tuple_set_u64(t, 0, sample->time);
1553         tuple_set_s32(t, 1, sample->cpu);
1554         tuple_set_s32(t, 2, sample->pid);
1555         tuple_set_s32(t, 3, sample->tid);
1556         tuple_set_s32(t, 4, np_pid);
1557         tuple_set_s32(t, 5, np_tid);
1558         tuple_set_s32(t, 6, machine->pid);
1559         tuple_set_bool(t, 7, out);
1560         tuple_set_bool(t, 8, out_preempt);
1561         tuple_set_s32(t, 9, sample->machine_pid);
1562         tuple_set_s32(t, 10, sample->vcpu);
1563
1564         call_object(handler, t, handler_name);
1565
1566         Py_DECREF(t);
1567 }
1568
1569 static void python_process_switch(union perf_event *event,
1570                                   struct perf_sample *sample,
1571                                   struct machine *machine)
1572 {
1573         struct tables *tables = &tables_global;
1574
1575         if (tables->db_export_mode)
1576                 db_export__switch(&tables->dbe, event, sample, machine);
1577         else
1578                 python_do_process_switch(event, sample, machine);
1579 }
1580
1581 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1582                                           union perf_event *event)
1583 {
1584         struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1585         u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1586         const char *handler_name = "auxtrace_error";
1587         unsigned long long tm = e->time;
1588         const char *msg = e->msg;
1589         PyObject *handler, *t;
1590
1591         handler = get_handler(handler_name);
1592         if (!handler)
1593                 return;
1594
1595         if (!e->fmt) {
1596                 tm = 0;
1597                 msg = (const char *)&e->time;
1598         }
1599
1600         t = tuple_new(11);
1601
1602         tuple_set_u32(t, 0, e->type);
1603         tuple_set_u32(t, 1, e->code);
1604         tuple_set_s32(t, 2, e->cpu);
1605         tuple_set_s32(t, 3, e->pid);
1606         tuple_set_s32(t, 4, e->tid);
1607         tuple_set_u64(t, 5, e->ip);
1608         tuple_set_u64(t, 6, tm);
1609         tuple_set_string(t, 7, msg);
1610         tuple_set_u32(t, 8, cpumode);
1611         tuple_set_s32(t, 9, e->machine_pid);
1612         tuple_set_s32(t, 10, e->vcpu);
1613
1614         call_object(handler, t, handler_name);
1615
1616         Py_DECREF(t);
1617 }
1618
1619 static void get_handler_name(char *str, size_t size,
1620                              struct evsel *evsel)
1621 {
1622         char *p = str;
1623
1624         scnprintf(str, size, "stat__%s", evsel__name(evsel));
1625
1626         while ((p = strchr(p, ':'))) {
1627                 *p = '_';
1628                 p++;
1629         }
1630 }
1631
1632 static void
1633 process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1634              struct perf_counts_values *count)
1635 {
1636         PyObject *handler, *t;
1637         static char handler_name[256];
1638         int n = 0;
1639
1640         t = PyTuple_New(MAX_FIELDS);
1641         if (!t)
1642                 Py_FatalError("couldn't create Python tuple");
1643
1644         get_handler_name(handler_name, sizeof(handler_name),
1645                          counter);
1646
1647         handler = get_handler(handler_name);
1648         if (!handler) {
1649                 pr_debug("can't find python handler %s\n", handler_name);
1650                 return;
1651         }
1652
1653         PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1654         PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1655
1656         tuple_set_u64(t, n++, tstamp);
1657         tuple_set_u64(t, n++, count->val);
1658         tuple_set_u64(t, n++, count->ena);
1659         tuple_set_u64(t, n++, count->run);
1660
1661         if (_PyTuple_Resize(&t, n) == -1)
1662                 Py_FatalError("error resizing Python tuple");
1663
1664         call_object(handler, t, handler_name);
1665
1666         Py_DECREF(t);
1667 }
1668
1669 static void python_process_stat(struct perf_stat_config *config,
1670                                 struct evsel *counter, u64 tstamp)
1671 {
1672         struct perf_thread_map *threads = counter->core.threads;
1673         struct perf_cpu_map *cpus = counter->core.cpus;
1674         int cpu, thread;
1675
1676         for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1677                 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1678                         process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
1679                                      perf_thread_map__pid(threads, thread), tstamp,
1680                                      perf_counts(counter->counts, cpu, thread));
1681                 }
1682         }
1683 }
1684
1685 static void python_process_stat_interval(u64 tstamp)
1686 {
1687         PyObject *handler, *t;
1688         static const char handler_name[] = "stat__interval";
1689         int n = 0;
1690
1691         t = PyTuple_New(MAX_FIELDS);
1692         if (!t)
1693                 Py_FatalError("couldn't create Python tuple");
1694
1695         handler = get_handler(handler_name);
1696         if (!handler) {
1697                 pr_debug("can't find python handler %s\n", handler_name);
1698                 return;
1699         }
1700
1701         tuple_set_u64(t, n++, tstamp);
1702
1703         if (_PyTuple_Resize(&t, n) == -1)
1704                 Py_FatalError("error resizing Python tuple");
1705
1706         call_object(handler, t, handler_name);
1707
1708         Py_DECREF(t);
1709 }
1710
1711 static int perf_script_context_init(void)
1712 {
1713         PyObject *perf_script_context;
1714         PyObject *perf_trace_context;
1715         PyObject *dict;
1716         int ret;
1717
1718         perf_trace_context = PyImport_AddModule("perf_trace_context");
1719         if (!perf_trace_context)
1720                 return -1;
1721         dict = PyModule_GetDict(perf_trace_context);
1722         if (!dict)
1723                 return -1;
1724
1725         perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1726         if (!perf_script_context)
1727                 return -1;
1728
1729         ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1730         if (!ret)
1731                 ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1732         Py_DECREF(perf_script_context);
1733         return ret;
1734 }
1735
1736 static int run_start_sub(void)
1737 {
1738         main_module = PyImport_AddModule("__main__");
1739         if (main_module == NULL)
1740                 return -1;
1741         Py_INCREF(main_module);
1742
1743         main_dict = PyModule_GetDict(main_module);
1744         if (main_dict == NULL)
1745                 goto error;
1746         Py_INCREF(main_dict);
1747
1748         if (perf_script_context_init())
1749                 goto error;
1750
1751         try_call_object("trace_begin", NULL);
1752
1753         return 0;
1754
1755 error:
1756         Py_XDECREF(main_dict);
1757         Py_XDECREF(main_module);
1758         return -1;
1759 }
1760
1761 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do {         \
1762         tables->handler_name = get_handler(#table_name);                \
1763         if (tables->handler_name)                                       \
1764                 tables->dbe.export_ ## name = python_export_ ## name;   \
1765 } while (0)
1766
1767 #define SET_TABLE_HANDLER(name) \
1768         SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1769
1770 static void set_table_handlers(struct tables *tables)
1771 {
1772         const char *perf_db_export_mode = "perf_db_export_mode";
1773         const char *perf_db_export_calls = "perf_db_export_calls";
1774         const char *perf_db_export_callchains = "perf_db_export_callchains";
1775         PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1776         bool export_calls = false;
1777         bool export_callchains = false;
1778         int ret;
1779
1780         memset(tables, 0, sizeof(struct tables));
1781         if (db_export__init(&tables->dbe))
1782                 Py_FatalError("failed to initialize export");
1783
1784         db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1785         if (!db_export_mode)
1786                 return;
1787
1788         ret = PyObject_IsTrue(db_export_mode);
1789         if (ret == -1)
1790                 handler_call_die(perf_db_export_mode);
1791         if (!ret)
1792                 return;
1793
1794         /* handle export calls */
1795         tables->dbe.crp = NULL;
1796         db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1797         if (db_export_calls) {
1798                 ret = PyObject_IsTrue(db_export_calls);
1799                 if (ret == -1)
1800                         handler_call_die(perf_db_export_calls);
1801                 export_calls = !!ret;
1802         }
1803
1804         if (export_calls) {
1805                 tables->dbe.crp =
1806                         call_return_processor__new(python_process_call_return,
1807                                                    &tables->dbe);
1808                 if (!tables->dbe.crp)
1809                         Py_FatalError("failed to create calls processor");
1810         }
1811
1812         /* handle export callchains */
1813         tables->dbe.cpr = NULL;
1814         db_export_callchains = PyDict_GetItemString(main_dict,
1815                                                     perf_db_export_callchains);
1816         if (db_export_callchains) {
1817                 ret = PyObject_IsTrue(db_export_callchains);
1818                 if (ret == -1)
1819                         handler_call_die(perf_db_export_callchains);
1820                 export_callchains = !!ret;
1821         }
1822
1823         if (export_callchains) {
1824                 /*
1825                  * Attempt to use the call path root from the call return
1826                  * processor, if the call return processor is in use. Otherwise,
1827                  * we allocate a new call path root. This prevents exporting
1828                  * duplicate call path ids when both are in use simultaneously.
1829                  */
1830                 if (tables->dbe.crp)
1831                         tables->dbe.cpr = tables->dbe.crp->cpr;
1832                 else
1833                         tables->dbe.cpr = call_path_root__new();
1834
1835                 if (!tables->dbe.cpr)
1836                         Py_FatalError("failed to create call path root");
1837         }
1838
1839         tables->db_export_mode = true;
1840         /*
1841          * Reserve per symbol space for symbol->db_id via symbol__priv()
1842          */
1843         symbol_conf.priv_size = sizeof(u64);
1844
1845         SET_TABLE_HANDLER(evsel);
1846         SET_TABLE_HANDLER(machine);
1847         SET_TABLE_HANDLER(thread);
1848         SET_TABLE_HANDLER(comm);
1849         SET_TABLE_HANDLER(comm_thread);
1850         SET_TABLE_HANDLER(dso);
1851         SET_TABLE_HANDLER(symbol);
1852         SET_TABLE_HANDLER(branch_type);
1853         SET_TABLE_HANDLER(sample);
1854         SET_TABLE_HANDLER(call_path);
1855         SET_TABLE_HANDLER(call_return);
1856         SET_TABLE_HANDLER(context_switch);
1857
1858         /*
1859          * Synthesized events are samples but with architecture-specific data
1860          * stored in sample->raw_data. They are exported via
1861          * python_export_sample() and consequently do not need a separate export
1862          * callback.
1863          */
1864         tables->synth_handler = get_handler("synth_data");
1865 }
1866
1867 #if PY_MAJOR_VERSION < 3
1868 static void _free_command_line(const char **command_line, int num)
1869 {
1870         free(command_line);
1871 }
1872 #else
1873 static void _free_command_line(wchar_t **command_line, int num)
1874 {
1875         int i;
1876         for (i = 0; i < num; i++)
1877                 PyMem_RawFree(command_line[i]);
1878         free(command_line);
1879 }
1880 #endif
1881
1882
1883 /*
1884  * Start trace script
1885  */
1886 static int python_start_script(const char *script, int argc, const char **argv,
1887                                struct perf_session *session)
1888 {
1889         struct tables *tables = &tables_global;
1890 #if PY_MAJOR_VERSION < 3
1891         const char **command_line;
1892 #else
1893         wchar_t **command_line;
1894 #endif
1895         /*
1896          * Use a non-const name variable to cope with python 2.6's
1897          * PyImport_AppendInittab prototype
1898          */
1899         char buf[PATH_MAX], name[19] = "perf_trace_context";
1900         int i, err = 0;
1901         FILE *fp;
1902
1903         scripting_context->session = session;
1904 #if PY_MAJOR_VERSION < 3
1905         command_line = malloc((argc + 1) * sizeof(const char *));
1906         command_line[0] = script;
1907         for (i = 1; i < argc + 1; i++)
1908                 command_line[i] = argv[i - 1];
1909         PyImport_AppendInittab(name, initperf_trace_context);
1910 #else
1911         command_line = malloc((argc + 1) * sizeof(wchar_t *));
1912         command_line[0] = Py_DecodeLocale(script, NULL);
1913         for (i = 1; i < argc + 1; i++)
1914                 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1915         PyImport_AppendInittab(name, PyInit_perf_trace_context);
1916 #endif
1917         Py_Initialize();
1918
1919 #if PY_MAJOR_VERSION < 3
1920         PySys_SetArgv(argc + 1, (char **)command_line);
1921 #else
1922         PySys_SetArgv(argc + 1, command_line);
1923 #endif
1924
1925         fp = fopen(script, "r");
1926         if (!fp) {
1927                 sprintf(buf, "Can't open python script \"%s\"", script);
1928                 perror(buf);
1929                 err = -1;
1930                 goto error;
1931         }
1932
1933         err = PyRun_SimpleFile(fp, script);
1934         if (err) {
1935                 fprintf(stderr, "Error running python script %s\n", script);
1936                 goto error;
1937         }
1938
1939         err = run_start_sub();
1940         if (err) {
1941                 fprintf(stderr, "Error starting python script %s\n", script);
1942                 goto error;
1943         }
1944
1945         set_table_handlers(tables);
1946
1947         if (tables->db_export_mode) {
1948                 err = db_export__branch_types(&tables->dbe);
1949                 if (err)
1950                         goto error;
1951         }
1952
1953         _free_command_line(command_line, argc + 1);
1954
1955         return err;
1956 error:
1957         Py_Finalize();
1958         _free_command_line(command_line, argc + 1);
1959
1960         return err;
1961 }
1962
1963 static int python_flush_script(void)
1964 {
1965         return 0;
1966 }
1967
1968 /*
1969  * Stop trace script
1970  */
1971 static int python_stop_script(void)
1972 {
1973         struct tables *tables = &tables_global;
1974
1975         try_call_object("trace_end", NULL);
1976
1977         db_export__exit(&tables->dbe);
1978
1979         Py_XDECREF(main_dict);
1980         Py_XDECREF(main_module);
1981         Py_Finalize();
1982
1983         return 0;
1984 }
1985
1986 #ifdef HAVE_LIBTRACEEVENT
1987 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1988 {
1989         int i, not_first, count, nr_events;
1990         struct tep_event **all_events;
1991         struct tep_event *event = NULL;
1992         struct tep_format_field *f;
1993         char fname[PATH_MAX];
1994         FILE *ofp;
1995
1996         sprintf(fname, "%s.py", outfile);
1997         ofp = fopen(fname, "w");
1998         if (ofp == NULL) {
1999                 fprintf(stderr, "couldn't open %s\n", fname);
2000                 return -1;
2001         }
2002         fprintf(ofp, "# perf script event handlers, "
2003                 "generated by perf script -g python\n");
2004
2005         fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2006                 " License version 2\n\n");
2007
2008         fprintf(ofp, "# The common_* event handler fields are the most useful "
2009                 "fields common to\n");
2010
2011         fprintf(ofp, "# all events.  They don't necessarily correspond to "
2012                 "the 'common_*' fields\n");
2013
2014         fprintf(ofp, "# in the format files.  Those fields not available as "
2015                 "handler params can\n");
2016
2017         fprintf(ofp, "# be retrieved using Python functions of the form "
2018                 "common_*(context).\n");
2019
2020         fprintf(ofp, "# See the perf-script-python Documentation for the list "
2021                 "of available functions.\n\n");
2022
2023         fprintf(ofp, "from __future__ import print_function\n\n");
2024         fprintf(ofp, "import os\n");
2025         fprintf(ofp, "import sys\n\n");
2026
2027         fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2028         fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2029         fprintf(ofp, "\nfrom perf_trace_context import *\n");
2030         fprintf(ofp, "from Core import *\n\n\n");
2031
2032         fprintf(ofp, "def trace_begin():\n");
2033         fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2034
2035         fprintf(ofp, "def trace_end():\n");
2036         fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2037
2038         nr_events = tep_get_events_count(pevent);
2039         all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2040
2041         for (i = 0; all_events && i < nr_events; i++) {
2042                 event = all_events[i];
2043                 fprintf(ofp, "def %s__%s(", event->system, event->name);
2044                 fprintf(ofp, "event_name, ");
2045                 fprintf(ofp, "context, ");
2046                 fprintf(ofp, "common_cpu,\n");
2047                 fprintf(ofp, "\tcommon_secs, ");
2048                 fprintf(ofp, "common_nsecs, ");
2049                 fprintf(ofp, "common_pid, ");
2050                 fprintf(ofp, "common_comm,\n\t");
2051                 fprintf(ofp, "common_callchain, ");
2052
2053                 not_first = 0;
2054                 count = 0;
2055
2056                 for (f = event->format.fields; f; f = f->next) {
2057                         if (not_first++)
2058                                 fprintf(ofp, ", ");
2059                         if (++count % 5 == 0)
2060                                 fprintf(ofp, "\n\t");
2061
2062                         fprintf(ofp, "%s", f->name);
2063                 }
2064                 if (not_first++)
2065                         fprintf(ofp, ", ");
2066                 if (++count % 5 == 0)
2067                         fprintf(ofp, "\n\t\t");
2068                 fprintf(ofp, "perf_sample_dict");
2069
2070                 fprintf(ofp, "):\n");
2071
2072                 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2073                         "common_secs, common_nsecs,\n\t\t\t"
2074                         "common_pid, common_comm)\n\n");
2075
2076                 fprintf(ofp, "\t\tprint(\"");
2077
2078                 not_first = 0;
2079                 count = 0;
2080
2081                 for (f = event->format.fields; f; f = f->next) {
2082                         if (not_first++)
2083                                 fprintf(ofp, ", ");
2084                         if (count && count % 3 == 0) {
2085                                 fprintf(ofp, "\" \\\n\t\t\"");
2086                         }
2087                         count++;
2088
2089                         fprintf(ofp, "%s=", f->name);
2090                         if (f->flags & TEP_FIELD_IS_STRING ||
2091                             f->flags & TEP_FIELD_IS_FLAG ||
2092                             f->flags & TEP_FIELD_IS_ARRAY ||
2093                             f->flags & TEP_FIELD_IS_SYMBOLIC)
2094                                 fprintf(ofp, "%%s");
2095                         else if (f->flags & TEP_FIELD_IS_SIGNED)
2096                                 fprintf(ofp, "%%d");
2097                         else
2098                                 fprintf(ofp, "%%u");
2099                 }
2100
2101                 fprintf(ofp, "\" %% \\\n\t\t(");
2102
2103                 not_first = 0;
2104                 count = 0;
2105
2106                 for (f = event->format.fields; f; f = f->next) {
2107                         if (not_first++)
2108                                 fprintf(ofp, ", ");
2109
2110                         if (++count % 5 == 0)
2111                                 fprintf(ofp, "\n\t\t");
2112
2113                         if (f->flags & TEP_FIELD_IS_FLAG) {
2114                                 if ((count - 1) % 5 != 0) {
2115                                         fprintf(ofp, "\n\t\t");
2116                                         count = 4;
2117                                 }
2118                                 fprintf(ofp, "flag_str(\"");
2119                                 fprintf(ofp, "%s__%s\", ", event->system,
2120                                         event->name);
2121                                 fprintf(ofp, "\"%s\", %s)", f->name,
2122                                         f->name);
2123                         } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2124                                 if ((count - 1) % 5 != 0) {
2125                                         fprintf(ofp, "\n\t\t");
2126                                         count = 4;
2127                                 }
2128                                 fprintf(ofp, "symbol_str(\"");
2129                                 fprintf(ofp, "%s__%s\", ", event->system,
2130                                         event->name);
2131                                 fprintf(ofp, "\"%s\", %s)", f->name,
2132                                         f->name);
2133                         } else
2134                                 fprintf(ofp, "%s", f->name);
2135                 }
2136
2137                 fprintf(ofp, "))\n\n");
2138
2139                 fprintf(ofp, "\t\tprint('Sample: {'+"
2140                         "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2141
2142                 fprintf(ofp, "\t\tfor node in common_callchain:");
2143                 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2144                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2145                 fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2146                 fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2147                 fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
2148                 fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2149                 fprintf(ofp, "\n\t\t\telse:");
2150                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2151                 fprintf(ofp, "\t\tprint()\n\n");
2152
2153         }
2154
2155         fprintf(ofp, "def trace_unhandled(event_name, context, "
2156                 "event_fields_dict, perf_sample_dict):\n");
2157
2158         fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2159         fprintf(ofp, "\t\tprint('Sample: {'+"
2160                 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2161
2162         fprintf(ofp, "def print_header("
2163                 "event_name, cpu, secs, nsecs, pid, comm):\n"
2164                 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2165                 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2166
2167         fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2168                 "\treturn delimiter.join"
2169                 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2170
2171         fclose(ofp);
2172
2173         fprintf(stderr, "generated Python script: %s\n", fname);
2174
2175         return 0;
2176 }
2177 #else
2178 static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2179                                   const char *outfile __maybe_unused)
2180 {
2181         fprintf(stderr, "Generating Python perf-script is not supported."
2182                 "  Install libtraceevent and rebuild perf to enable it.\n"
2183                 "For example:\n  # apt install libtraceevent-dev (ubuntu)"
2184                 "\n  # yum install libtraceevent-devel (Fedora)"
2185                 "\n  etc.\n");
2186         return -1;
2187 }
2188 #endif
2189
2190 struct scripting_ops python_scripting_ops = {
2191         .name                   = "Python",
2192         .dirname                = "python",
2193         .start_script           = python_start_script,
2194         .flush_script           = python_flush_script,
2195         .stop_script            = python_stop_script,
2196         .process_event          = python_process_event,
2197         .process_switch         = python_process_switch,
2198         .process_auxtrace_error = python_process_auxtrace_error,
2199         .process_stat           = python_process_stat,
2200         .process_stat_interval  = python_process_stat_interval,
2201         .process_throttle       = python_process_throttle,
2202         .generate_script        = python_generate_script,
2203 };