41 lines
687 B
Objective-C
41 lines
687 B
Objective-C
//
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// Semaphore.m
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// Cog
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//
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// Created by Vincent Spader on 8/2/05.
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// Copyright 2005 Vincent Spader. All rights reserved.
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//
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#import "Semaphore.h"
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@implementation Semaphore
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- (id)init {
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self = [super init];
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if(self) {
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semaphore_create(mach_task_self(), &semaphore, SYNC_POLICY_FIFO, 0);
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}
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return self;
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}
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- (void)signal {
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semaphore_signal_all(semaphore);
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}
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- (void)timedWait:(int)microseconds {
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mach_timespec_t timeout = { 0, microseconds * 1000UL };
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semaphore_timedwait(semaphore, timeout);
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}
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- (void)wait {
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mach_timespec_t t = { 2.0, 0.0 }; // 2 second timeout
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semaphore_timedwait(semaphore, t);
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}
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- (void)waitIndefinitely {
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semaphore_wait(semaphore);
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}
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@end
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