1 files changed, 111 insertions, 0 deletions
diff --git a/src/core/lib/gpr/sync_posix.cc b/src/core/lib/gpr/sync_posix.cc
new file mode 100644
index 0000000000..c3f6b10463
--- /dev/null
+++ b/src/core/lib/gpr/sync_posix.cc
@@ -0,0 +1,111 @@
+/*
+ *
+ * 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, 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_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) {
+  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); }
+
+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;
+#if GPR_LINUX
+    abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_MONOTONIC);
+#else
+    abs_deadline = gpr_convert_clock_type(abs_deadline, GPR_CLOCK_REALTIME);
+#endif  // GPR_LINUX
+    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 */