Artifact 619bce178bec3fa99ad8366ba7fe94164c162342788f61ec80caeebe122340ae:
- File
src/mutex.m
— part of check-in
[5358e9ea6a]
at
2019-08-01 20:14:35
on branch trunk
— Split threading.[hm] into multiple files
This allows the runtime to only link against the parts it needs, without
pulling in unnecessary parts like thread spawning, TLS and conditions. (user: js, size: 2327) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019 * Jonathan Schleifer <js@heap.zone> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #import "mutex.h" #if defined(OF_HAVE_PTHREADS) # include "mutex_pthread.m" #elif defined(OF_WINDOWS) # include "mutex_winapi.m" #endif #if !defined(OF_HAVE_RECURSIVE_PTHREAD_MUTEXES) && !defined(OF_WINDOWS) bool of_rmutex_new(of_rmutex_t *rmutex) { if (!of_mutex_new(&rmutex->mutex)) return false; if (!of_tlskey_new(&rmutex->count)) return false; return true; } bool of_rmutex_lock(of_rmutex_t *rmutex) { uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count); if (count > 0) { if (!of_tlskey_set(rmutex->count, (void *)(count + 1))) return false; return true; } if (!of_mutex_lock(&rmutex->mutex)) return false; if (!of_tlskey_set(rmutex->count, (void *)1)) { of_mutex_unlock(&rmutex->mutex); return false; } return true; } bool of_rmutex_trylock(of_rmutex_t *rmutex) { uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count); if (count > 0) { if (!of_tlskey_set(rmutex->count, (void *)(count + 1))) return false; return true; } if (!of_mutex_trylock(&rmutex->mutex)) return false; if (!of_tlskey_set(rmutex->count, (void *)1)) { of_mutex_unlock(&rmutex->mutex); return false; } return true; } bool of_rmutex_unlock(of_rmutex_t *rmutex) { uintptr_t count = (uintptr_t)of_tlskey_get(rmutex->count); if (count > 1) { if (!of_tlskey_set(rmutex->count, (void *)(count - 1))) return false; return true; } if (!of_tlskey_set(rmutex->count, (void *)0)) return false; if (!of_mutex_unlock(&rmutex->mutex)) return false; return true; } bool of_rmutex_free(of_rmutex_t *rmutex) { if (!of_mutex_free(&rmutex->mutex)) return false; if (!of_tlskey_free(rmutex->count)) return false; return true; } #endif