vkd3d: Add simple pthread wrapper for MSVC.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
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/*
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* Copyright 2019 Hans-Kristian Arntzen for Valve
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __VKD3D_THREADS_H
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#define __VKD3D_THREADS_H
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#include "config.h"
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#if defined(HAVE_PTHREAD_H)
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#include <pthread.h>
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#elif defined(_WIN32) /* HAVE_PTHREAD_H */
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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/* pthread_t is passed by value in some functions,
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* which implies we need pthread_t to be a pointer type here. */
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struct pthread
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{
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HANDLE thread;
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DWORD id;
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void * (*routine)(void *);
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void *arg;
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};
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typedef struct pthread *pthread_t;
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/* pthread_mutex_t is not copyable, so embed CS inline. */
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typedef struct pthread_mutex
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{
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CRITICAL_SECTION lock;
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} pthread_mutex_t;
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/* pthread_cond_t is not copyable, so embed CV inline. */
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typedef struct pthread_cond
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{
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CONDITION_VARIABLE cond;
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} pthread_cond_t;
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static DWORD WINAPI win32_thread_wrapper_routine(void *arg)
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{
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pthread_t thread = arg;
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thread->routine(thread->arg);
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return 0;
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}
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static inline int pthread_create(pthread_t *out_thread, void *attr, void * (*thread_fun)(void *), void *arg)
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{
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pthread_t thread = vkd3d_calloc(1, sizeof(*thread));
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if (!thread)
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return -1;
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(void)attr;
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thread->routine = thread_fun;
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thread->arg = arg;
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thread->thread = CreateThread(NULL, 0, win32_thread_wrapper_routine, thread, 0, &thread->id);
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if (!thread->thread)
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{
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vkd3d_free(thread);
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return -1;
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}
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*out_thread = thread;
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return 0;
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}
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static inline int pthread_join(pthread_t thread, void **ret)
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{
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(void)ret;
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int success = WaitForSingleObject(thread->thread, INFINITE) == WAIT_OBJECT_0;
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if (success)
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{
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CloseHandle(thread->thread);
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vkd3d_free(thread);
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}
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return success ? 0 : -1;
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}
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static inline int pthread_mutex_init(pthread_mutex_t *lock, void *attr)
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{
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(void)attr;
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InitializeCriticalSection(&lock->lock);
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return 0;
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}
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static inline int pthread_mutex_lock(pthread_mutex_t *lock)
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{
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EnterCriticalSection(&lock->lock);
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return 0;
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}
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static inline int pthread_mutex_unlock(pthread_mutex_t *lock)
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{
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LeaveCriticalSection(&lock->lock);
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return 0;
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}
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static inline int pthread_mutex_destroy(pthread_mutex_t *lock)
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{
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DeleteCriticalSection(&lock->lock);
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return 0;
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}
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static inline int pthread_cond_init(pthread_cond_t *cond, void *attr)
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{
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(void)attr;
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InitializeConditionVariable(&cond->cond);
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return 0;
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}
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static inline void pthread_cond_destroy(pthread_cond_t *cond)
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{
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(void)cond;
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}
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static inline int pthread_cond_signal(pthread_cond_t *cond)
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{
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WakeConditionVariable(&cond->cond);
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return 0;
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}
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static inline int pthread_cond_broadcast(pthread_cond_t *cond)
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{
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WakeAllConditionVariable(&cond->cond);
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return 0;
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}
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static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *lock)
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{
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bool ret = SleepConditionVariableCS(&cond->cond, &lock->lock, INFINITE);
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return ret ? 0 : -1;
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}
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#else /* HAVE_PTHREAD_H */
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#error "Threads are not supported. Cannot build."
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#endif /* HAVE_PTHREAD_H */
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static inline void vkd3d_set_thread_name(const char *name)
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{
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#if defined(_MSC_VER)
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(void)name;
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#elif defined(HAVE_PTHREAD_SETNAME_NP_2)
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pthread_setname_np(pthread_self(), name);
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#elif defined(HAVE_PTHREAD_SETNAME_NP_1)
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pthread_setname_np(name);
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#else
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(void)name;
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#endif
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}
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#endif /* __VKD3D_THREADS_H */
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