3 * Copyright 2015 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include <ruby/ruby.h>
27 #include <sys/types.h>
31 #include "rb_call_credentials.h"
32 #include "rb_channel.h"
33 #include "rb_channel_credentials.h"
34 #include "rb_compression_options.h"
35 #include "rb_event_thread.h"
36 #include "rb_grpc_imports.generated.h"
37 #include "rb_loader.h"
38 #include "rb_server.h"
39 #include "rb_server_credentials.h"
40 #include "rb_xds_channel_credentials.h"
41 #include "rb_xds_server_credentials.h"
43 #include <grpc/grpc.h>
44 #include <grpc/support/log.h>
45 #include <grpc/support/time.h>
47 static VALUE grpc_rb_cTimeVal = Qnil;
49 static rb_data_type_t grpc_rb_timespec_data_type = {
51 {GRPC_RB_GC_NOT_MARKED,
53 GRPC_RB_MEMSIZE_UNAVAILABLE,
57 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
58 RUBY_TYPED_FREE_IMMEDIATELY
62 /* Alloc func that blocks allocation of a given object by raising an
64 VALUE grpc_rb_cannot_alloc(VALUE cls) {
65 rb_raise(rb_eTypeError,
66 "allocation of %s only allowed from the gRPC native layer",
71 /* Init func that fails by raising an exception. */
72 VALUE grpc_rb_cannot_init(VALUE self) {
73 rb_raise(rb_eTypeError,
74 "initialization of %s only allowed from the gRPC native layer",
75 rb_obj_classname(self));
79 /* Init/Clone func that fails by raising an exception. */
80 VALUE grpc_rb_cannot_init_copy(VALUE copy, VALUE self) {
82 rb_raise(rb_eTypeError, "Copy initialization of %s is not supported",
83 rb_obj_classname(copy));
87 /* id_tv_{,u}sec are accessor methods on Ruby Time instances. */
92 * grpc_rb_time_timeval creates a timeval from a ruby time object.
94 * This func is copied from ruby source, MRI/source/time.c, which is published
95 * under the same license as the ruby.h, on which the entire extensions is
98 gpr_timespec grpc_rb_time_timeval(VALUE time, int interval) {
100 gpr_timespec* time_const;
101 const char* tstr = interval ? "time interval" : "time";
102 const char* want = " want <secs from epoch>|<Time>|<GRPC::TimeConst.*>";
104 t.clock_type = GPR_CLOCK_REALTIME;
105 switch (TYPE(time)) {
107 if (CLASS_OF(time) == grpc_rb_cTimeVal) {
108 TypedData_Get_Struct(time, gpr_timespec, &grpc_rb_timespec_data_type,
111 } else if (CLASS_OF(time) == rb_cTime) {
112 t.tv_sec = NUM2INT(rb_funcall(time, id_tv_sec, 0));
113 t.tv_nsec = NUM2INT(rb_funcall(time, id_tv_nsec, 0));
115 rb_raise(rb_eTypeError, "bad input: (%s)->c_timeval, got <%s>,%s", tstr,
116 rb_obj_classname(time), want);
121 t.tv_sec = FIX2LONG(time);
122 if (interval && t.tv_sec < 0)
123 rb_raise(rb_eArgError, "%s must be positive", tstr);
128 if (interval && RFLOAT_VALUE(time) < 0.0)
129 rb_raise(rb_eArgError, "%s must be positive", tstr);
133 d = modf(RFLOAT_VALUE(time), &f);
138 t.tv_sec = (int64_t)f;
140 rb_raise(rb_eRangeError, "%f out of Time range", RFLOAT_VALUE(time));
142 t.tv_nsec = (int)(d * 1e9 + 0.5);
147 t.tv_sec = NUM2LONG(time);
148 if (interval && t.tv_sec < 0)
149 rb_raise(rb_eArgError, "%s must be positive", tstr);
154 rb_raise(rb_eTypeError, "bad input: (%s)->c_timeval, got <%s>,%s", tstr,
155 rb_obj_classname(time), want);
161 /* id_at is the constructor method of the ruby standard Time class. */
164 /* id_inspect is the inspect method found on various ruby objects. */
165 static ID id_inspect;
167 /* id_to_s is the to_s method found on various ruby objects. */
170 /* Converts a wrapped time constant to a standard time. */
171 static VALUE grpc_rb_time_val_to_time(VALUE self) {
172 gpr_timespec* time_const = NULL;
173 gpr_timespec real_time;
174 TypedData_Get_Struct(self, gpr_timespec, &grpc_rb_timespec_data_type,
176 real_time = gpr_convert_clock_type(*time_const, GPR_CLOCK_REALTIME);
177 return rb_funcall(rb_cTime, id_at, 2, INT2NUM(real_time.tv_sec),
178 INT2NUM(real_time.tv_nsec / 1000));
181 /* Invokes inspect on the ctime version of the time val. */
182 static VALUE grpc_rb_time_val_inspect(VALUE self) {
183 return rb_funcall(grpc_rb_time_val_to_time(self), id_inspect, 0);
186 /* Invokes to_s on the ctime version of the time val. */
187 static VALUE grpc_rb_time_val_to_s(VALUE self) {
188 return rb_funcall(grpc_rb_time_val_to_time(self), id_to_s, 0);
191 static gpr_timespec zero_realtime;
192 static gpr_timespec inf_future_realtime;
193 static gpr_timespec inf_past_realtime;
195 /* Adds a module with constants that map to gpr's static timeval structs. */
196 static void Init_grpc_time_consts() {
197 VALUE grpc_rb_mTimeConsts =
198 rb_define_module_under(grpc_rb_mGrpcCore, "TimeConsts");
200 rb_define_class_under(grpc_rb_mGrpcCore, "TimeSpec", rb_cObject);
201 zero_realtime = gpr_time_0(GPR_CLOCK_REALTIME);
202 inf_future_realtime = gpr_inf_future(GPR_CLOCK_REALTIME);
203 inf_past_realtime = gpr_inf_past(GPR_CLOCK_REALTIME);
205 grpc_rb_mTimeConsts, "ZERO",
206 TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
207 (void*)&zero_realtime));
209 grpc_rb_mTimeConsts, "INFINITE_FUTURE",
210 TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
211 (void*)&inf_future_realtime));
213 grpc_rb_mTimeConsts, "INFINITE_PAST",
214 TypedData_Wrap_Struct(grpc_rb_cTimeVal, &grpc_rb_timespec_data_type,
215 (void*)&inf_past_realtime));
216 rb_define_method(grpc_rb_cTimeVal, "to_time", grpc_rb_time_val_to_time, 0);
217 rb_define_method(grpc_rb_cTimeVal, "inspect", grpc_rb_time_val_inspect, 0);
218 rb_define_method(grpc_rb_cTimeVal, "to_s", grpc_rb_time_val_to_s, 0);
219 id_at = rb_intern("at");
220 id_inspect = rb_intern("inspect");
221 id_to_s = rb_intern("to_s");
222 id_tv_sec = rb_intern("tv_sec");
223 id_tv_nsec = rb_intern("tv_nsec");
227 static void grpc_ruby_set_init_pid(void) {}
228 static bool grpc_ruby_forked_after_init(void) { return false; }
230 static pid_t grpc_init_pid;
232 static void grpc_ruby_set_init_pid(void) {
233 GPR_ASSERT(grpc_init_pid == 0);
234 grpc_init_pid = getpid();
237 static bool grpc_ruby_forked_after_init(void) {
238 GPR_ASSERT(grpc_init_pid != 0);
239 return grpc_init_pid != getpid();
243 /* Initialize the GRPC module structs */
245 /* grpc_rb_sNewServerRpc is the struct that holds new server rpc details. */
246 VALUE grpc_rb_sNewServerRpc = Qnil;
247 /* grpc_rb_sStatus is the struct that holds status details. */
248 VALUE grpc_rb_sStatus = Qnil;
250 /* Initialize the GRPC module. */
251 VALUE grpc_rb_mGRPC = Qnil;
252 VALUE grpc_rb_mGrpcCore = Qnil;
254 /* cached Symbols for members in Status struct */
255 VALUE sym_code = Qundef;
256 VALUE sym_details = Qundef;
257 VALUE sym_metadata = Qundef;
259 static gpr_once g_once_init = GPR_ONCE_INIT;
261 void grpc_ruby_fork_guard() {
262 if (grpc_ruby_forked_after_init()) {
263 rb_raise(rb_eRuntimeError, "grpc cannot be used before and after forking");
267 static VALUE bg_thread_init_rb_mu = Qundef;
268 static int bg_thread_init_done = 0;
270 static void grpc_ruby_init_threads() {
271 // Avoid calling into ruby library (when creating threads here)
272 // in gpr_once_init. In general, it appears to be unsafe to call
273 // into the ruby library while holding a non-ruby mutex, because a gil yield
274 // could end up trying to lock onto that same mutex and deadlocking.
275 rb_mutex_lock(bg_thread_init_rb_mu);
276 if (!bg_thread_init_done) {
277 grpc_rb_event_queue_thread_start();
278 grpc_rb_channel_polling_thread_start();
279 bg_thread_init_done = 1;
281 rb_mutex_unlock(bg_thread_init_rb_mu);
284 static int64_t g_grpc_ruby_init_count;
286 void grpc_ruby_init() {
287 gpr_once_init(&g_once_init, grpc_ruby_set_init_pid);
289 grpc_ruby_init_threads();
290 // (only gpr_log after logging has been initialized)
292 "GRPC_RUBY: grpc_ruby_init - prev g_grpc_ruby_init_count:%" PRId64,
293 g_grpc_ruby_init_count++);
296 void grpc_ruby_shutdown() {
297 GPR_ASSERT(g_grpc_ruby_init_count > 0);
298 if (!grpc_ruby_forked_after_init()) grpc_shutdown();
301 "GRPC_RUBY: grpc_ruby_shutdown - prev g_grpc_ruby_init_count:%" PRId64,
302 g_grpc_ruby_init_count--);
306 if (!grpc_rb_load_core()) {
307 rb_raise(rb_eLoadError, "Couldn't find or load gRPC's dynamic C core");
311 rb_global_variable(&bg_thread_init_rb_mu);
312 bg_thread_init_rb_mu = rb_mutex_new();
314 grpc_rb_mGRPC = rb_define_module("GRPC");
315 grpc_rb_mGrpcCore = rb_define_module_under(grpc_rb_mGRPC, "Core");
316 grpc_rb_sNewServerRpc = rb_struct_define(
317 "NewServerRpc", "method", "host", "deadline", "metadata", "call", NULL);
318 grpc_rb_sStatus = rb_const_get(rb_cStruct, rb_intern("Status"));
319 sym_code = ID2SYM(rb_intern("code"));
320 sym_details = ID2SYM(rb_intern("details"));
321 sym_metadata = ID2SYM(rb_intern("metadata"));
325 Init_grpc_call_credentials();
326 Init_grpc_channel_credentials();
327 Init_grpc_xds_channel_credentials();
329 Init_grpc_server_credentials();
330 Init_grpc_xds_server_credentials();
331 Init_grpc_time_consts();
332 Init_grpc_compression_options();