清华大佬耗费三个月吐血整理的几百G的资源，免费分享！....>>>
@interface ViewController ()
@property (nonatomic, strong) NSMutableArray * array;
@property (nonatomic, strong) NSCondition * condition;
@property (nonatomic, strong) NSTimer * timer;
@end
@implementation ViewController
//初始化
- (NSMutableArray *)array
{
if (!_array) {
_array = [NSMutableArray array];
}
return _array;
}
- (NSCondition *)condition
{
if (!_condition) {
_condition = [[NSCondition alloc] init];
}
return _condition;
}
//加载
- (void)viewDidLoad {
[super viewDidLoad];
//购买
for (int i = 0; i<3; i++)
{
[self performSelectorInBackground:@selector(_consumer) withObject:nil];
}
//生产
self.timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(_productor) userInfo:nil repeats:YES];
}
- (void)_productor
{
[self.condition lock];
if (self.array.count != 0)
{
NSLog(@"结束");
[self.timer invalidate];
self.timer = nil;
}
else
{
[self.array addObject:@"aaa"];
NSLog(@"生产完成！");
[self.condition signal];
}
[self.condition unlock];
}
- (void)_consumer
{
[self.condition lock];
if (self.array.count <= 0)
{
NSLog(@"正在等待！");
[self.condition wait];
}
[self.array removeLastObject];
NSLog(@"购买成功！");
[self.condition unlock];
}
@end