| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GPR_POSIX_SYNC |
| |
| #include <errno.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/time.h> |
| #include <time.h> |
| #include "src/core/lib/profiling/timers.h" |
| |
| #ifdef GPR_LOW_LEVEL_COUNTERS |
| gpr_atm gpr_mu_locks = 0; |
| gpr_atm gpr_counter_atm_cas = 0; |
| gpr_atm gpr_counter_atm_add = 0; |
| #endif |
| |
| void gpr_mu_init(gpr_mu* mu) { GPR_ASSERT(pthread_mutex_init(mu, NULL) == 0); } |
| |
| void gpr_mu_destroy(gpr_mu* mu) { GPR_ASSERT(pthread_mutex_destroy(mu) == 0); } |
| |
| void gpr_mu_lock(gpr_mu* mu) { |
| #ifdef GPR_LOW_LEVEL_COUNTERS |
| GPR_ATM_INC_COUNTER(gpr_mu_locks); |
| #endif |
| GPR_TIMER_BEGIN("gpr_mu_lock", 0); |
| GPR_ASSERT(pthread_mutex_lock(mu) == 0); |
| GPR_TIMER_END("gpr_mu_lock", 0); |
| } |
| |
| void gpr_mu_unlock(gpr_mu* mu) { |
| GPR_TIMER_BEGIN("gpr_mu_unlock", 0); |
| GPR_ASSERT(pthread_mutex_unlock(mu) == 0); |
| GPR_TIMER_END("gpr_mu_unlock", 0); |
| } |
| |
| int gpr_mu_trylock(gpr_mu* mu) { |
| int err; |
| GPR_TIMER_BEGIN("gpr_mu_trylock", 0); |
| err = pthread_mutex_trylock(mu); |
| GPR_ASSERT(err == 0 || err == EBUSY); |
| GPR_TIMER_END("gpr_mu_trylock", 0); |
| return err == 0; |
| } |
| |
| /*----------------------------------------*/ |
| |
| void gpr_cv_init(gpr_cv* cv) { GPR_ASSERT(pthread_cond_init(cv, NULL) == 0); } |
| |
| void gpr_cv_destroy(gpr_cv* cv) { GPR_ASSERT(pthread_cond_destroy(cv) == 0); } |
| |
| int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) { |
| int err = 0; |
| if (gpr_time_cmp(abs_deadline, gpr_inf_future(abs_deadline.clock_type)) == |
| 0) { |
| err = pthread_cond_wait(cv, mu); |
| } else { |
| struct timespec abs_deadline_ts; |
| abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME); |
| abs_deadline_ts.tv_sec = (time_t)abs_deadline.tv_sec; |
| abs_deadline_ts.tv_nsec = abs_deadline.tv_nsec; |
| err = pthread_cond_timedwait(cv, mu, &abs_deadline_ts); |
| } |
| GPR_ASSERT(err == 0 || err == ETIMEDOUT || err == EAGAIN); |
| return err == ETIMEDOUT; |
| } |
| |
| void gpr_cv_signal(gpr_cv* cv) { GPR_ASSERT(pthread_cond_signal(cv) == 0); } |
| |
| void gpr_cv_broadcast(gpr_cv* cv) { |
| GPR_ASSERT(pthread_cond_broadcast(cv) == 0); |
| } |
| |
| /*----------------------------------------*/ |
| |
| void gpr_once_init(gpr_once* once, void (*init_function)(void)) { |
| GPR_ASSERT(pthread_once(once, init_function) == 0); |
| } |
| |
| #endif /* GRP_POSIX_SYNC */ |