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Diffstat (limited to '3rdparty/SDL2/src/thread/windows/SDL_syssem.c')
-rw-r--r--3rdparty/SDL2/src/thread/windows/SDL_syssem.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/3rdparty/SDL2/src/thread/windows/SDL_syssem.c b/3rdparty/SDL2/src/thread/windows/SDL_syssem.c
deleted file mode 100644
index 86b58882de3..00000000000
--- a/3rdparty/SDL2/src/thread/windows/SDL_syssem.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../../SDL_internal.h"
-
-#if SDL_THREAD_WINDOWS
-
-/* Semaphore functions using the Win32 API */
-
-#include "../../core/windows/SDL_windows.h"
-
-#include "SDL_thread.h"
-
-struct SDL_semaphore
-{
- HANDLE id;
- LONG count;
-};
-
-
-/* Create a semaphore */
-SDL_sem *
-SDL_CreateSemaphore(Uint32 initial_value)
-{
- SDL_sem *sem;
-
- /* Allocate sem memory */
- sem = (SDL_sem *) SDL_malloc(sizeof(*sem));
- if (sem) {
- /* Create the semaphore, with max value 32K */
-#if __WINRT__
- sem->id = CreateSemaphoreEx(NULL, initial_value, 32 * 1024, NULL, 0, SEMAPHORE_ALL_ACCESS);
-#else
- sem->id = CreateSemaphore(NULL, initial_value, 32 * 1024, NULL);
-#endif
- sem->count = initial_value;
- if (!sem->id) {
- SDL_SetError("Couldn't create semaphore");
- SDL_free(sem);
- sem = NULL;
- }
- } else {
- SDL_OutOfMemory();
- }
- return (sem);
-}
-
-/* Free the semaphore */
-void
-SDL_DestroySemaphore(SDL_sem * sem)
-{
- if (sem) {
- if (sem->id) {
- CloseHandle(sem->id);
- sem->id = 0;
- }
- SDL_free(sem);
- }
-}
-
-int
-SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)
-{
- int retval;
- DWORD dwMilliseconds;
-
- if (!sem) {
- return SDL_SetError("Passed a NULL sem");
- }
-
- if (timeout == SDL_MUTEX_MAXWAIT) {
- dwMilliseconds = INFINITE;
- } else {
- dwMilliseconds = (DWORD) timeout;
- }
-#if __WINRT__
- switch (WaitForSingleObjectEx(sem->id, dwMilliseconds, FALSE)) {
-#else
- switch (WaitForSingleObject(sem->id, dwMilliseconds)) {
-#endif
- case WAIT_OBJECT_0:
- InterlockedDecrement(&sem->count);
- retval = 0;
- break;
- case WAIT_TIMEOUT:
- retval = SDL_MUTEX_TIMEDOUT;
- break;
- default:
- retval = SDL_SetError("WaitForSingleObject() failed");
- break;
- }
- return retval;
-}
-
-int
-SDL_SemTryWait(SDL_sem * sem)
-{
- return SDL_SemWaitTimeout(sem, 0);
-}
-
-int
-SDL_SemWait(SDL_sem * sem)
-{
- return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT);
-}
-
-/* Returns the current count of the semaphore */
-Uint32
-SDL_SemValue(SDL_sem * sem)
-{
- if (!sem) {
- SDL_SetError("Passed a NULL sem");
- return 0;
- }
- return (Uint32)sem->count;
-}
-
-int
-SDL_SemPost(SDL_sem * sem)
-{
- if (!sem) {
- return SDL_SetError("Passed a NULL sem");
- }
- /* Increase the counter in the first place, because
- * after a successful release the semaphore may
- * immediately get destroyed by another thread which
- * is waiting for this semaphore.
- */
- InterlockedIncrement(&sem->count);
- if (ReleaseSemaphore(sem->id, 1, NULL) == FALSE) {
- InterlockedDecrement(&sem->count); /* restore */
- return SDL_SetError("ReleaseSemaphore() failed");
- }
- return 0;
-}
-
-#endif /* SDL_THREAD_WINDOWS */
-
-/* vi: set ts=4 sw=4 expandtab: */