diff options
Diffstat (limited to 'src/core/support/sync_posix.c')
-rw-r--r-- | src/core/support/sync_posix.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/core/support/sync_posix.c b/src/core/support/sync_posix.c new file mode 100644 index 0000000000..257a7fbf4e --- /dev/null +++ b/src/core/support/sync_posix.c @@ -0,0 +1,82 @@ +/* + * + * Copyright 2014, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* Posix gpr synchroization support code. */ + +#include <errno.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.h> +#include <grpc/support/time.h> + +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) { GPR_ASSERT(pthread_mutex_lock(mu) == 0); } + +void gpr_mu_unlock(gpr_mu *mu) { GPR_ASSERT(pthread_mutex_unlock(mu) == 0); } + +int gpr_mu_trylock(gpr_mu *mu) { + int err = pthread_mutex_trylock(mu); + GPR_ASSERT(err == 0 || err == EBUSY); + 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) == 0) { + err = pthread_cond_wait(cv, mu); + } else { + err = pthread_cond_timedwait(cv, mu, &abs_deadline); + } + 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); +} |