1 files changed, 146 insertions, 138 deletions

diff --git a/src/thread/os2/SDL_syscond.c b/src/thread/os2/SDL_syscond.c
index 25577e40..48a0540f 100644
--- a/src/thread/os2/SDL_syscond.c
+++ b/src/thread/os2/SDL_syscond.c
@@ -31,107 +31,111 @@
 
 struct SDL_cond
 {
-	SDL_mutex *lock;
-	int waiting;
-	int signals;
-	SDL_sem *wait_sem;
-	SDL_sem *wait_done;
+    SDL_mutex *lock;
+    int waiting;
+    int signals;
+    SDL_sem *wait_sem;
+    SDL_sem *wait_done;
 };
 
 /* Create a condition variable */
-DECLSPEC SDL_cond * SDLCALL SDL_CreateCond(void)
+DECLSPEC SDL_cond *SDLCALL
+SDL_CreateCond(void)
 {
-	SDL_cond *cond;
-
-	cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
-	if ( cond ) {
-		cond->lock = SDL_CreateMutex();
-		cond->wait_sem = SDL_CreateSemaphore(0);
-		cond->wait_done = SDL_CreateSemaphore(0);
-		cond->waiting = cond->signals = 0;
-		if ( ! cond->lock || ! cond->wait_sem || ! cond->wait_done ) {
-			SDL_DestroyCond(cond);
-			cond = NULL;
-		}
-	} else {
-		SDL_OutOfMemory();
-	}
-	return(cond);
+    SDL_cond *cond;
+
+    cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
+    if (cond) {
+        cond->lock = SDL_CreateMutex();
+        cond->wait_sem = SDL_CreateSemaphore(0);
+        cond->wait_done = SDL_CreateSemaphore(0);
+        cond->waiting = cond->signals = 0;
+        if (!cond->lock || !cond->wait_sem || !cond->wait_done) {
+            SDL_DestroyCond(cond);
+            cond = NULL;
+        }
+    } else {
+        SDL_OutOfMemory();
+    }
+    return (cond);
 }
 
 /* Destroy a condition variable */
-DECLSPEC void SDLCALL SDL_DestroyCond(SDL_cond *cond)
+DECLSPEC void SDLCALL
+SDL_DestroyCond(SDL_cond * cond)
 {
-	if ( cond ) {
-		if ( cond->wait_sem ) {
-			SDL_DestroySemaphore(cond->wait_sem);
-		}
-		if ( cond->wait_done ) {
-			SDL_DestroySemaphore(cond->wait_done);
-		}
-		if ( cond->lock ) {
-			SDL_DestroyMutex(cond->lock);
-		}
-		SDL_free(cond);
-	}
+    if (cond) {
+        if (cond->wait_sem) {
+            SDL_DestroySemaphore(cond->wait_sem);
+        }
+        if (cond->wait_done) {
+            SDL_DestroySemaphore(cond->wait_done);
+        }
+        if (cond->lock) {
+            SDL_DestroyMutex(cond->lock);
+        }
+        SDL_free(cond);
+    }
 }
 
 /* Restart one of the threads that are waiting on the condition variable */
-DECLSPEC int SDLCALL SDL_CondSignal(SDL_cond *cond)
+DECLSPEC int SDLCALL
+SDL_CondSignal(SDL_cond * cond)
 {
-	if ( ! cond ) {
-		SDL_SetError("Passed a NULL condition variable");
-		return -1;
-	}
-
-	/* If there are waiting threads not already signalled, then
-	   signal the condition and wait for the thread to respond.
-	*/
-	SDL_LockMutex(cond->lock);
-	if ( cond->waiting > cond->signals ) {
-		++cond->signals;
-		SDL_SemPost(cond->wait_sem);
-		SDL_UnlockMutex(cond->lock);
-		SDL_SemWait(cond->wait_done);
-	} else {
-		SDL_UnlockMutex(cond->lock);
-	}
-
-	return 0;
+    if (!cond) {
+        SDL_SetError("Passed a NULL condition variable");
+        return -1;
+    }
+
+    /* If there are waiting threads not already signalled, then
+       signal the condition and wait for the thread to respond.
+     */
+    SDL_LockMutex(cond->lock);
+    if (cond->waiting > cond->signals) {
+        ++cond->signals;
+        SDL_SemPost(cond->wait_sem);
+        SDL_UnlockMutex(cond->lock);
+        SDL_SemWait(cond->wait_done);
+    } else {
+        SDL_UnlockMutex(cond->lock);
+    }
+
+    return 0;
 }
 
 /* Restart all threads that are waiting on the condition variable */
-DECLSPEC int SDLCALL SDL_CondBroadcast(SDL_cond *cond)
+DECLSPEC int SDLCALL
+SDL_CondBroadcast(SDL_cond * cond)
 {
-	if ( ! cond ) {
-		SDL_SetError("Passed a NULL condition variable");
-		return -1;
-	}
-
-	/* If there are waiting threads not already signalled, then
-	   signal the condition and wait for the thread to respond.
-	*/
-	SDL_LockMutex(cond->lock);
-	if ( cond->waiting > cond->signals ) {
-		int i, num_waiting;
-
-		num_waiting = (cond->waiting - cond->signals);
-		cond->signals = cond->waiting;
-		for ( i=0; i<num_waiting; ++i ) {
-			SDL_SemPost(cond->wait_sem);
-		}
-		/* Now all released threads are blocked here, waiting for us.
-		   Collect them all (and win fabulous prizes!) :-)
-		 */
-		SDL_UnlockMutex(cond->lock);
-		for ( i=0; i<num_waiting; ++i ) {
-			SDL_SemWait(cond->wait_done);
-		}
-	} else {
-		SDL_UnlockMutex(cond->lock);
-	}
-
-	return 0;
+    if (!cond) {
+        SDL_SetError("Passed a NULL condition variable");
+        return -1;
+    }
+
+    /* If there are waiting threads not already signalled, then
+       signal the condition and wait for the thread to respond.
+     */
+    SDL_LockMutex(cond->lock);
+    if (cond->waiting > cond->signals) {
+        int i, num_waiting;
+
+        num_waiting = (cond->waiting - cond->signals);
+        cond->signals = cond->waiting;
+        for (i = 0; i < num_waiting; ++i) {
+            SDL_SemPost(cond->wait_sem);
+        }
+        /* Now all released threads are blocked here, waiting for us.
+           Collect them all (and win fabulous prizes!) :-)
+         */
+        SDL_UnlockMutex(cond->lock);
+        for (i = 0; i < num_waiting; ++i) {
+            SDL_SemWait(cond->wait_done);
+        }
+    } else {
+        SDL_UnlockMutex(cond->lock);
+    }
+
+    return 0;
 }
 
 /* Wait on the condition variable for at most 'ms' milliseconds.
@@ -154,62 +158,66 @@ Thread B:
 	...
 	SDL_UnlockMutex(lock);
  */
-DECLSPEC int SDLCALL SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms)
+DECLSPEC int SDLCALL
+SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)
 {
-	int retval;
-
-	if ( ! cond ) {
-		SDL_SetError("Passed a NULL condition variable");
-		return -1;
-	}
-
-	/* Obtain the protection mutex, and increment the number of waiters.
-	   This allows the signal mechanism to only perform a signal if there
-	   are waiting threads.
-	 */
-	SDL_LockMutex(cond->lock);
-	++cond->waiting;
-	SDL_UnlockMutex(cond->lock);
-
-	/* Unlock the mutex, as is required by condition variable semantics */
-	SDL_UnlockMutex(mutex);
-
-	/* Wait for a signal */
-	if ( ms == SDL_MUTEX_MAXWAIT ) {
-		retval = SDL_SemWait(cond->wait_sem);
-	} else {
-		retval = SDL_SemWaitTimeout(cond->wait_sem, ms);
-	}
-
-	/* Let the signaler know we have completed the wait, otherwise
-           the signaler can race ahead and get the condition semaphore
-           if we are stopped between the mutex unlock and semaphore wait,
-           giving a deadlock.  See the following URL for details:
-        http://www-classic.be.com/aboutbe/benewsletter/volume_III/Issue40.html
-	*/
-	SDL_LockMutex(cond->lock);
-	if ( cond->signals > 0 ) {
-		/* If we timed out, we need to eat a condition signal */
-		if ( retval > 0 ) {
-			SDL_SemWait(cond->wait_sem);
-		}
-		/* We always notify the signal thread that we are done */
-		SDL_SemPost(cond->wait_done);
-
-		/* Signal handshake complete */
-		--cond->signals;
-	}
-	--cond->waiting;
-	SDL_UnlockMutex(cond->lock);
-
-	/* Lock the mutex, as is required by condition variable semantics */
-	SDL_LockMutex(mutex);
-
-	return retval;
+    int retval;
+
+    if (!cond) {
+        SDL_SetError("Passed a NULL condition variable");
+        return -1;
+    }
+
+    /* Obtain the protection mutex, and increment the number of waiters.
+       This allows the signal mechanism to only perform a signal if there
+       are waiting threads.
+     */
+    SDL_LockMutex(cond->lock);
+    ++cond->waiting;
+    SDL_UnlockMutex(cond->lock);
+
+    /* Unlock the mutex, as is required by condition variable semantics */
+    SDL_UnlockMutex(mutex);
+
+    /* Wait for a signal */
+    if (ms == SDL_MUTEX_MAXWAIT) {
+        retval = SDL_SemWait(cond->wait_sem);
+    } else {
+        retval = SDL_SemWaitTimeout(cond->wait_sem, ms);
+    }
+
+    /* Let the signaler know we have completed the wait, otherwise
+       the signaler can race ahead and get the condition semaphore
+       if we are stopped between the mutex unlock and semaphore wait,
+       giving a deadlock.  See the following URL for details:
+       http://www-classic.be.com/aboutbe/benewsletter/volume_III/Issue40.html
+     */
+    SDL_LockMutex(cond->lock);
+    if (cond->signals > 0) {
+        /* If we timed out, we need to eat a condition signal */
+        if (retval > 0) {
+            SDL_SemWait(cond->wait_sem);
+        }
+        /* We always notify the signal thread that we are done */
+        SDL_SemPost(cond->wait_done);
+
+        /* Signal handshake complete */
+        --cond->signals;
+    }
+    --cond->waiting;
+    SDL_UnlockMutex(cond->lock);
+
+    /* Lock the mutex, as is required by condition variable semantics */
+    SDL_LockMutex(mutex);
+
+    return retval;
 }
 
 /* Wait on the condition variable forever */
-DECLSPEC int SDLCALL SDL_CondWait(SDL_cond *cond, SDL_mutex *mutex)
+DECLSPEC int SDLCALL
+SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex)
 {
-	return SDL_CondWaitTimeout(cond, mutex, SDL_MUTEX_MAXWAIT);
+    return SDL_CondWaitTimeout(cond, mutex, SDL_MUTEX_MAXWAIT);
 }
+
+/* vi: set ts=4 sw=4 expandtab: */