cog/Audio/Utils/CogSemaphore.m

//
//  CogSemaphore.m
//  Cog
//
//  Created by Vincent Spader on 8/2/05.
//  Copyright 2005 Vincent Spader. All rights reserved.
//

#import <CogAudio/CogSemaphore.h>

@implementation Semaphore

- (id)init {
	self = [super init];
	if(self) {
		semaphore_create(mach_task_self(), &semaphore, SYNC_POLICY_FIFO, 0);
	}

	return self;
}

- (void)signal {
	semaphore_signal_all(semaphore);
}

- (void)timedWait:(int)microseconds {
	mach_timespec_t timeout = { 0, microseconds * 1000UL };

	semaphore_timedwait(semaphore, timeout);
}

- (void)wait {
	mach_timespec_t t = { 2.0, 0.0 }; // 2 second timeout
	semaphore_timedwait(semaphore, t);
}

- (void)waitIndefinitely {
	semaphore_wait(semaphore);
}

@end