2 * Copyright (C) 2018 Stefan Schake <stschake@gmail.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include <backtrace/Backtrace.h>
26 #include "util/simple_mtx.h"
27 #include "util/u_debug.h"
28 #include "u_debug_stack.h"
29 #include "util/hash_table.h"
30 #include "util/u_thread.h"
32 static hash_table *symbol_table;
33 static simple_mtx_t table_mutex = SIMPLE_MTX_INITIALIZER;
36 intern_symbol(const char *symbol)
39 symbol_table = _mesa_hash_table_create(NULL, NULL, _mesa_key_string_equal);
41 uint32_t hash = _mesa_hash_string(symbol);
43 _mesa_hash_table_search_pre_hashed(symbol_table, hash, symbol);
45 entry = _mesa_hash_table_insert_pre_hashed(symbol_table, hash, symbol, strdup(symbol));
47 return (const char *) entry->data;
51 debug_backtrace_capture(debug_stack_frame *backtrace,
60 bt = Backtrace::Create(BACKTRACE_CURRENT_PROCESS,
61 BACKTRACE_CURRENT_THREAD);
63 for (unsigned i = 0; i < nr_frames; i++)
64 backtrace[i].procname = NULL;
68 /* Add one to exclude this call. Unwind already ignores itself. */
69 bt->Unwind(start_frame + 1);
71 simple_mtx_lock(&table_mutex);
73 for (unsigned i = 0; i < nr_frames; i++) {
74 const backtrace_frame_data_t* frame = bt->GetFrame(i);
76 backtrace[i].procname = intern_symbol(frame->func_name.c_str());
77 backtrace[i].start_ip = frame->pc;
78 backtrace[i].off = frame->func_offset;
79 backtrace[i].map = intern_symbol(frame->map.Name().c_str());
80 backtrace[i].map_off = frame->rel_pc;
82 backtrace[i].procname = NULL;
86 simple_mtx_unlock(&table_mutex);
92 debug_backtrace_dump(const debug_stack_frame *backtrace,
95 for (unsigned i = 0; i < nr_frames; i++) {
96 if (backtrace[i].procname)
98 "%s(+0x%x)\t%012" PRIx64 ": %s+0x%x\n",
100 backtrace[i].map_off,
101 backtrace[i].start_ip,
102 backtrace[i].procname,
108 debug_backtrace_print(FILE *f,
109 const debug_stack_frame *backtrace,
112 for (unsigned i = 0; i < nr_frames; i++) {
113 if (backtrace[i].procname)
115 "%s(+0x%x)\t%012" PRIx64 ": %s+0x%x\n",
117 backtrace[i].map_off,
118 backtrace[i].start_ip,
119 backtrace[i].procname,