#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)NSThread *thread1;
@property(nonatomic,strong)NSThread *thread2;
@property(nonatomic,strong)NSThread *thread3;
//剩余票
@property(nonatomic,assign)NSInteger leftTickets;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.leftTickets=100;//总票数
// 初始化三个卖票窗口
self.thread1 = [[NSThread alloc] initWithTarget:self selector:@selector(saleTickets:) object:@"1号窗口"];
self.thread2 = [[NSThread alloc] initWithTarget:self selector:@selector(saleTickets:) object:@"2号窗口"];
self.thread3 = [[NSThread alloc] initWithTarget:self selector:@selector(saleTickets:) object:@"3号窗口"];
}
-(void)touchesBegan:(NSSet *)touches withEvent:( UIEvent *)event
{
//开始买票
[self.thread1 start];
[self.thread2 start];
[self.thread3 start];
}
-(void)saleTickets:(NSString*)str
{
while (1) {
@synchronized(self) {
[NSThread sleepForTimeInterval:0.5];
if(self.leftTickets>0)
{
self.leftTickets--;
NSLog(@"余票:%ld,买票的进程:%@",self.leftTickets,[NSThread currentThread]);
}
else
{
return;
}
}
}
}