| /* |
| * |
| * 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" |
| |
| // For debug of the timer manager crash only. |
| // TODO (mxyan): remove after bug is fixed. |
| #ifdef GRPC_DEBUG_TIMER_MANAGER |
| #include <string.h> |
| void (*g_grpc_debug_timer_manager_stats)( |
| int64_t timer_manager_init_count, int64_t timer_manager_shutdown_count, |
| int64_t fork_count, int64_t timer_wait_err, int64_t timer_cv_value, |
| int64_t timer_mu_value, int64_t abstime_sec_value, |
| int64_t abstime_nsec_value, int64_t abs_deadline_sec_value, |
| int64_t abs_deadline_nsec_value, int64_t now1_sec_value, |
| int64_t now1_nsec_value, int64_t now2_sec_value, int64_t now2_nsec_value, |
| int64_t add_result_sec_value, int64_t add_result_nsec_value, |
| int64_t sub_result_sec_value, int64_t sub_result_nsec_value, |
| int64_t next_value, int64_t start_time_sec, |
| int64_t start_time_nsec) = nullptr; |
| int64_t g_timer_manager_init_count = 0; |
| int64_t g_timer_manager_shutdown_count = 0; |
| int64_t g_fork_count = 0; |
| int64_t g_timer_wait_err = 0; |
| int64_t g_timer_cv_value = 0; |
| int64_t g_timer_mu_value = 0; |
| int64_t g_abstime_sec_value = -1; |
| int64_t g_abstime_nsec_value = -1; |
| int64_t g_abs_deadline_sec_value = -1; |
| int64_t g_abs_deadline_nsec_value = -1; |
| int64_t g_now1_sec_value = -1; |
| int64_t g_now1_nsec_value = -1; |
| int64_t g_now2_sec_value = -1; |
| int64_t g_now2_nsec_value = -1; |
| int64_t g_add_result_sec_value = -1; |
| int64_t g_add_result_nsec_value = -1; |
| int64_t g_sub_result_sec_value = -1; |
| int64_t g_sub_result_nsec_value = -1; |
| int64_t g_next_value = -1; |
| int64_t g_start_time_sec = -1; |
| int64_t g_start_time_nsec = -1; |
| #endif // GRPC_DEBUG_TIMER_MANAGER |
| |
| #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, nullptr) == 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_SCOPE("gpr_mu_lock", 0); |
| GPR_ASSERT(pthread_mutex_lock(mu) == 0); |
| } |
| |
| void gpr_mu_unlock(gpr_mu* mu) { |
| GPR_TIMER_SCOPE("gpr_mu_unlock", 0); |
| GPR_ASSERT(pthread_mutex_unlock(mu) == 0); |
| } |
| |
| int gpr_mu_trylock(gpr_mu* mu) { |
| GPR_TIMER_SCOPE("gpr_mu_trylock", 0); |
| int err = pthread_mutex_trylock(mu); |
| GPR_ASSERT(err == 0 || err == EBUSY); |
| return err == 0; |
| } |
| |
| /*----------------------------------------*/ |
| |
| void gpr_cv_init(gpr_cv* cv) { |
| pthread_condattr_t attr; |
| GPR_ASSERT(pthread_condattr_init(&attr) == 0); |
| #if GPR_LINUX |
| GPR_ASSERT(pthread_condattr_setclock(&attr, CLOCK_MONOTONIC) == 0); |
| #endif // GPR_LINUX |
| GPR_ASSERT(pthread_cond_init(cv, &attr) == 0); |
| } |
| |
| void gpr_cv_destroy(gpr_cv* cv) { GPR_ASSERT(pthread_cond_destroy(cv) == 0); } |
| |
| // For debug of the timer manager crash only. |
| // TODO (mxyan): remove after bug is fixed. |
| #ifdef GRPC_DEBUG_TIMER_MANAGER |
| static gpr_timespec gpr_convert_clock_type_debug_timespec( |
| gpr_timespec t, gpr_clock_type clock_type, gpr_timespec& now1, |
| gpr_timespec& now2, gpr_timespec& add_result, gpr_timespec& sub_result) { |
| if (t.clock_type == clock_type) { |
| return t; |
| } |
| |
| if (t.tv_sec == INT64_MAX || t.tv_sec == INT64_MIN) { |
| t.clock_type = clock_type; |
| return t; |
| } |
| |
| if (clock_type == GPR_TIMESPAN) { |
| return gpr_time_sub(t, gpr_now(t.clock_type)); |
| } |
| |
| if (t.clock_type == GPR_TIMESPAN) { |
| return gpr_time_add(gpr_now(clock_type), t); |
| } |
| |
| now1 = gpr_now(t.clock_type); |
| sub_result = gpr_time_sub(t, now1); |
| now2 = gpr_now(clock_type); |
| add_result = gpr_time_add(now2, sub_result); |
| return add_result; |
| } |
| |
| #define gpr_convert_clock_type_debug(t, clock_type, now1, now2, add_result, \ |
| sub_result) \ |
| gpr_convert_clock_type_debug_timespec((t), (clock_type), (now1), (now2), \ |
| (add_result), (sub_result)) |
| #else |
| #define gpr_convert_clock_type_debug(t, clock_type, now1, now2, add_result, \ |
| sub_result) \ |
| gpr_convert_clock_type((t), (clock_type)) |
| #endif |
| |
| int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu, gpr_timespec abs_deadline) { |
| int err = 0; |
| #ifdef GRPC_DEBUG_TIMER_MANAGER |
| // For debug of the timer manager crash only. |
| // TODO (mxyan): remove after bug is fixed. |
| gpr_timespec abs_deadline_copy; |
| abs_deadline_copy.tv_sec = abs_deadline.tv_sec; |
| abs_deadline_copy.tv_nsec = abs_deadline.tv_nsec; |
| gpr_timespec now1; |
| gpr_timespec now2; |
| gpr_timespec add_result; |
| gpr_timespec sub_result; |
| memset(&now1, 0, sizeof(now1)); |
| memset(&now2, 0, sizeof(now2)); |
| memset(&add_result, 0, sizeof(add_result)); |
| memset(&sub_result, 0, sizeof(sub_result)); |
| #endif |
| 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; |
| #if GPR_LINUX |
| abs_deadline = gpr_convert_clock_type_debug( |
| abs_deadline, GPR_CLOCK_MONOTONIC, now1, now2, add_result, sub_result); |
| #else |
| abs_deadline = gpr_convert_clock_type_debug( |
| abs_deadline, GPR_CLOCK_REALTIME, now1, now2, add_result, sub_result); |
| #endif // GPR_LINUX |
| abs_deadline_ts.tv_sec = static_cast<time_t>(abs_deadline.tv_sec); |
| abs_deadline_ts.tv_nsec = abs_deadline.tv_nsec; |
| err = pthread_cond_timedwait(cv, mu, &abs_deadline_ts); |
| #ifdef GRPC_DEBUG_TIMER_MANAGER |
| // For debug of the timer manager crash only. |
| // TODO (mxyan): remove after bug is fixed. |
| if (GPR_UNLIKELY(!(err == 0 || err == ETIMEDOUT || err == EAGAIN))) { |
| g_abstime_sec_value = abs_deadline_ts.tv_sec; |
| g_abstime_nsec_value = abs_deadline_ts.tv_nsec; |
| } |
| #endif |
| } |
| |
| #ifdef GRPC_DEBUG_TIMER_MANAGER |
| // For debug of the timer manager crash only. |
| // TODO (mxyan): remove after bug is fixed. |
| if (GPR_UNLIKELY(!(err == 0 || err == ETIMEDOUT || err == EAGAIN))) { |
| if (g_grpc_debug_timer_manager_stats) { |
| g_timer_wait_err = err; |
| g_timer_cv_value = (int64_t)cv; |
| g_timer_mu_value = (int64_t)mu; |
| g_abs_deadline_sec_value = abs_deadline_copy.tv_sec; |
| g_abs_deadline_nsec_value = abs_deadline_copy.tv_nsec; |
| g_now1_sec_value = now1.tv_sec; |
| g_now1_nsec_value = now1.tv_nsec; |
| g_now2_sec_value = now2.tv_sec; |
| g_now2_nsec_value = now2.tv_nsec; |
| g_add_result_sec_value = add_result.tv_sec; |
| g_add_result_nsec_value = add_result.tv_nsec; |
| g_sub_result_sec_value = sub_result.tv_sec; |
| g_sub_result_nsec_value = sub_result.tv_nsec; |
| g_grpc_debug_timer_manager_stats( |
| g_timer_manager_init_count, g_timer_manager_shutdown_count, |
| g_fork_count, g_timer_wait_err, g_timer_cv_value, g_timer_mu_value, |
| g_abstime_sec_value, g_abstime_nsec_value, g_abs_deadline_sec_value, |
| g_abs_deadline_nsec_value, g_now1_sec_value, g_now1_nsec_value, |
| g_now2_sec_value, g_now2_nsec_value, g_add_result_sec_value, |
| g_add_result_nsec_value, g_sub_result_sec_value, |
| g_sub_result_nsec_value, g_next_value, g_start_time_sec, |
| g_start_time_nsec); |
| } |
| } |
| #endif |
| 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 */ |