| /* |
| Copyright (c) 2012 Martin Sustrik All rights reserved. |
| Copyright 2016 Garrett D'Amore <garrett@damore.org> |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| and/or sell copies of the Software, and to permit persons to whom |
| the Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| IN THE SOFTWARE. |
| */ |
| |
| #include "mutex.h" |
| #include "err.h" |
| |
| #include <stdlib.h> |
| |
| #ifdef NN_HAVE_WINDOWS |
| |
| void nn_mutex_init (nn_mutex_t *self) |
| { |
| InitializeCriticalSection (&self->cs); |
| self->owner = 0; |
| } |
| |
| void nn_mutex_term (nn_mutex_t *self) |
| { |
| /* Make sure we don't free a locked mutex. */ |
| nn_assert(self->owner == 0); |
| DeleteCriticalSection (&self->cs); |
| } |
| |
| void nn_mutex_lock (nn_mutex_t *self) |
| { |
| EnterCriticalSection (&self->cs); |
| |
| /* Make sure we don't recursively enter mutexes. */ |
| nn_assert(self->owner == 0); |
| self->owner = GetCurrentThreadId(); |
| } |
| |
| void nn_mutex_unlock (nn_mutex_t *self) |
| { |
| /* Make sure that we own the mutex we are releasing. */ |
| nn_assert(self->owner == GetCurrentThreadId()); |
| self->owner = 0; |
| LeaveCriticalSection (&self->cs); |
| } |
| |
| #else |
| |
| void nn_mutex_init (nn_mutex_t *self) |
| { |
| int rc; |
| pthread_mutexattr_t attr; |
| |
| pthread_mutexattr_init(&attr); |
| rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK); |
| errnum_assert (rc == 0, rc); |
| rc = pthread_mutex_init (&self->mutex, NULL); |
| errnum_assert (rc == 0, rc); |
| pthread_mutexattr_destroy(&attr); |
| } |
| |
| void nn_mutex_term (nn_mutex_t *self) |
| { |
| int rc; |
| |
| rc = pthread_mutex_destroy (&self->mutex); |
| errnum_assert (rc == 0, rc); |
| } |
| |
| void nn_mutex_lock (nn_mutex_t *self) |
| { |
| int rc; |
| |
| rc = pthread_mutex_lock (&self->mutex); |
| errnum_assert (rc == 0, rc); |
| } |
| |
| void nn_mutex_unlock (nn_mutex_t *self) |
| { |
| int rc; |
| |
| rc = pthread_mutex_unlock (&self->mutex); |
| errnum_assert (rc == 0, rc); |
| } |
| |
| #endif |