diff src/thread/win32/SDL_syssem.c @ 1895:c121d94672cb

SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 10 Jul 2006 21:04:37 +0000
parents bb6839704ed6
children 99210400e8b9
line wrap: on
line diff
--- a/src/thread/win32/SDL_syssem.c	Thu Jul 06 18:01:37 2006 +0000
+++ b/src/thread/win32/SDL_syssem.c	Mon Jul 10 21:04:37 2006 +0000
@@ -32,133 +32,143 @@
 #endif
 
 
-struct SDL_semaphore {
+struct SDL_semaphore
+{
 #if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-	SYNCHHANDLE id;
+    SYNCHHANDLE id;
 #else
-	HANDLE id;
+    HANDLE id;
 #endif
-	Uint32 volatile count;
+    Uint32 volatile count;
 };
 
 
 /* Create a semaphore */
-SDL_sem *SDL_CreateSemaphore(Uint32 initial_value)
+SDL_sem *
+SDL_CreateSemaphore(Uint32 initial_value)
 {
-	SDL_sem *sem;
+    SDL_sem *sem;
 
-	/* Allocate sem memory */
-	sem = (SDL_sem *)SDL_malloc(sizeof(*sem));
-	if ( sem ) {
-		/* Create the semaphore, with max value 32K */
+    /* Allocate sem memory */
+    sem = (SDL_sem *) SDL_malloc(sizeof(*sem));
+    if (sem) {
+        /* Create the semaphore, with max value 32K */
 #if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-		sem->id = CreateSemaphoreCE(NULL, initial_value, 32*1024, NULL);
+        sem->id = CreateSemaphoreCE(NULL, initial_value, 32 * 1024, NULL);
 #else
-		sem->id = CreateSemaphore(NULL, initial_value, 32*1024, NULL);
+        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);
+        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)
+void
+SDL_DestroySemaphore(SDL_sem * sem)
 {
-	if ( sem ) {
-		if ( sem->id ) {
+    if (sem) {
+        if (sem->id) {
 #if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-			CloseSynchHandle(sem->id);
+            CloseSynchHandle(sem->id);
 #else
-			CloseHandle(sem->id);
+            CloseHandle(sem->id);
 #endif
-			sem->id = 0;
-		}
-		SDL_free(sem);
-	}
+            sem->id = 0;
+        }
+        SDL_free(sem);
+    }
 }
 
-int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout)
+int
+SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)
 {
-	int retval;
-	DWORD dwMilliseconds;
+    int retval;
+    DWORD dwMilliseconds;
 
-	if ( ! sem ) {
-		SDL_SetError("Passed a NULL sem");
-		return -1;
-	}
+    if (!sem) {
+        SDL_SetError("Passed a NULL sem");
+        return -1;
+    }
 
-	if ( timeout == SDL_MUTEX_MAXWAIT ) {
-		dwMilliseconds = INFINITE;
-	} else {
-		dwMilliseconds = (DWORD)timeout;
-	}
+    if (timeout == SDL_MUTEX_MAXWAIT) {
+        dwMilliseconds = INFINITE;
+    } else {
+        dwMilliseconds = (DWORD) timeout;
+    }
 #if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-	switch (WaitForSemaphoreCE(sem->id, dwMilliseconds)) {
+    switch (WaitForSemaphoreCE(sem->id, dwMilliseconds)) {
 #else
-	switch (WaitForSingleObject(sem->id, dwMilliseconds)) {
+    switch (WaitForSingleObject(sem->id, dwMilliseconds)) {
 #endif
-	    case WAIT_OBJECT_0:
-		--sem->count;
-		retval = 0;
-		break;
-	    case WAIT_TIMEOUT:
-		retval = SDL_MUTEX_TIMEDOUT;
-		break;
-	    default:
-		SDL_SetError("WaitForSingleObject() failed");
-		retval = -1;
-		break;
-	}
-	return retval;
+    case WAIT_OBJECT_0:
+        --sem->count;
+        retval = 0;
+        break;
+    case WAIT_TIMEOUT:
+        retval = SDL_MUTEX_TIMEDOUT;
+        break;
+    default:
+        SDL_SetError("WaitForSingleObject() failed");
+        retval = -1;
+        break;
+    }
+    return retval;
 }
 
-int SDL_SemTryWait(SDL_sem *sem)
+int
+SDL_SemTryWait(SDL_sem * sem)
 {
-	return SDL_SemWaitTimeout(sem, 0);
+    return SDL_SemWaitTimeout(sem, 0);
 }
 
-int SDL_SemWait(SDL_sem *sem)
+int
+SDL_SemWait(SDL_sem * sem)
 {
-	return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT);
+    return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT);
 }
 
 /* Returns the current count of the semaphore */
-Uint32 SDL_SemValue(SDL_sem *sem)
+Uint32
+SDL_SemValue(SDL_sem * sem)
 {
-	if ( ! sem ) {
-		SDL_SetError("Passed a NULL sem");
-		return 0;
-	}
-	return sem->count;
+    if (!sem) {
+        SDL_SetError("Passed a NULL sem");
+        return 0;
+    }
+    return sem->count;
 }
 
-int SDL_SemPost(SDL_sem *sem)
+int
+SDL_SemPost(SDL_sem * sem)
 {
-	if ( ! sem ) {
-		SDL_SetError("Passed a NULL sem");
-		return -1;
-	}
-	/* 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.
-	 */
-	++sem->count;
+    if (!sem) {
+        SDL_SetError("Passed a NULL sem");
+        return -1;
+    }
+    /* 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.
+     */
+    ++sem->count;
 #if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-	if ( ReleaseSemaphoreCE(sem->id, 1, NULL) == FALSE ) {
+    if (ReleaseSemaphoreCE(sem->id, 1, NULL) == FALSE) {
 #else
-	if ( ReleaseSemaphore(sem->id, 1, NULL) == FALSE ) {
+    if (ReleaseSemaphore(sem->id, 1, NULL) == FALSE) {
 #endif
-		--sem->count;	/* restore */
-		SDL_SetError("ReleaseSemaphore() failed");
-		return -1;
-	}
-	return 0;
+        --sem->count;           /* restore */
+        SDL_SetError("ReleaseSemaphore() failed");
+        return -1;
+    }
+    return 0;
 }
+
+/* vi: set ts=4 sw=4 expandtab: */