[PATCH v2 05/12] vkd3d: Add simple pthread wrapper for MSVC.
Hans-Kristian Arntzen
post at arntzen-software.no
Tue Oct 1 05:33:42 CDT 2019
Signed-off-by: Hans-Kristian Arntzen <post at arntzen-software.no>
---
include/private/vkd3d_threads.h | 165 ++++++++++++++++++++++++++++++++
1 file changed, 165 insertions(+)
create mode 100644 include/private/vkd3d_threads.h
diff --git a/include/private/vkd3d_threads.h b/include/private/vkd3d_threads.h
new file mode 100644
index 0000000..94d4307
--- /dev/null
+++ b/include/private/vkd3d_threads.h
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2019 Hans-Kristian Arntzen for Valve
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __VKD3D_THREADS_H
+#define __VKD3D_THREADS_H
+
+#include "config.h"
+
+#if defined(HAVE_PTHREAD_H)
+#include <pthread.h>
+
+#elif defined(_WIN32) /* HAVE_PTHREAD_H */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/* pthread_t is passed by value in some functions,
+ * which implies we need pthread_t to be a pointer type here. */
+struct pthread
+{
+ HANDLE thread;
+ DWORD id;
+ void * (*routine)(void *);
+ void *arg;
+};
+typedef struct pthread *pthread_t;
+
+/* pthread_mutex_t is not copyable, so embed CS inline. */
+typedef struct pthread_mutex
+{
+ CRITICAL_SECTION lock;
+} pthread_mutex_t;
+
+/* pthread_cond_t is not copyable, so embed CV inline. */
+typedef struct pthread_cond
+{
+ CONDITION_VARIABLE cond;
+} pthread_cond_t;
+
+static DWORD WINAPI win32_thread_wrapper_routine(void *arg)
+{
+ pthread_t thread = arg;
+ thread->routine(thread->arg);
+ return 0;
+}
+
+static inline int pthread_create(pthread_t *out_thread, void *attr, void * (*thread_fun)(void *), void *arg)
+{
+ pthread_t thread = vkd3d_calloc(1, sizeof(*thread));
+ if (!thread)
+ return -1;
+
+ (void)attr;
+ thread->routine = thread_fun;
+ thread->arg = arg;
+ thread->thread = CreateThread(NULL, 0, win32_thread_wrapper_routine, thread, 0, &thread->id);
+ if (!thread->thread)
+ {
+ vkd3d_free(thread);
+ return -1;
+ }
+ *out_thread = thread;
+ return 0;
+}
+
+static inline int pthread_join(pthread_t thread, void **ret)
+{
+ (void)ret;
+ int success = WaitForSingleObject(thread->thread, INFINITE) == WAIT_OBJECT_0;
+ if (success)
+ {
+ CloseHandle(thread->thread);
+ vkd3d_free(thread);
+ }
+ return success ? 0 : -1;
+}
+
+static inline int pthread_mutex_init(pthread_mutex_t *lock, void *attr)
+{
+ (void)attr;
+ InitializeCriticalSection(&lock->lock);
+ return 0;
+}
+
+static inline int pthread_mutex_lock(pthread_mutex_t *lock)
+{
+ EnterCriticalSection(&lock->lock);
+ return 0;
+}
+
+static inline int pthread_mutex_unlock(pthread_mutex_t *lock)
+{
+ LeaveCriticalSection(&lock->lock);
+ return 0;
+}
+
+static inline int pthread_mutex_destroy(pthread_mutex_t *lock)
+{
+ DeleteCriticalSection(&lock->lock);
+ return 0;
+}
+
+static inline int pthread_cond_init(pthread_cond_t *cond, void *attr)
+{
+ (void)attr;
+ InitializeConditionVariable(&cond->cond);
+ return 0;
+}
+
+static inline void pthread_cond_destroy(pthread_cond_t *cond)
+{
+ (void)cond;
+}
+
+static inline int pthread_cond_signal(pthread_cond_t *cond)
+{
+ WakeConditionVariable(&cond->cond);
+ return 0;
+}
+
+static inline int pthread_cond_broadcast(pthread_cond_t *cond)
+{
+ WakeAllConditionVariable(&cond->cond);
+ return 0;
+}
+
+static inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *lock)
+{
+ bool ret = SleepConditionVariableCS(&cond->cond, &lock->lock, INFINITE);
+ return ret ? 0 : -1;
+}
+
+#else /* HAVE_PTHREAD_H */
+#error "Threads are not supported. Cannot build."
+#endif /* HAVE_PTHREAD_H */
+
+static inline void vkd3d_set_thread_name(const char *name)
+{
+#if defined(_MSC_VER)
+ (void)name;
+#elif defined(HAVE_PTHREAD_SETNAME_NP_2)
+ pthread_setname_np(pthread_self(), name);
+#elif defined(HAVE_PTHREAD_SETNAME_NP_1)
+ pthread_setname_np(name);
+#else
+ (void)name;
+#endif
+}
+
+#endif /* __VKD3D_THREADS_H */
--
2.23.0
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