cog/Utils/Semaphore.m

44 lines
606 B
Objective-C

//
// Semaphore.m
// Cog
//
// Created by Vincent Spader on 8/2/05.
// Copyright 2005 Vincent Spader. All rights reserved.
//
#import "Semaphore.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)seconds
{
mach_timespec_t timeout = {seconds, 0};
semaphore_timedwait(semaphore, timeout);
}
-(void)wait
{
mach_timespec_t t = {2.0, 0.0}; //2 second timeout
semaphore_timedwait(semaphore, t);
}
@end