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//
// BaseDemo2.m
// Synchronization
//
// Created by pro648 on 2020/5/8.
// Copyright © 2020 pro648. All rights reserved.
//
#import "BaseDemo2.h"
@interface BaseDemo2 ()
@property (nonatomic, assign) int ticketsCount;
@property (nonatomic, assign) int money;
@end
@implementation BaseDemo2
// MARK: - Money
- (void)moneyTest {
self.money = 100;
dispatch_queue_t queue = dispatch_get_global_queue(QOS_CLASS_UTILITY, 0);
dispatch_async(queue, ^{
for (int i = 0; i < 10; ++i) {
[self __saveMoney];
}
});
dispatch_async(queue, ^{
for (int i = 0; i < 10; ++i) {
[self __drawMoney];
}
});
}
- (void)__drawMoney {
int oldMoney = self.money;
sleep(1);
oldMoney -= 20;
self.money = oldMoney;
NSLog(@"取20元，还剩%d元 -- %@", oldMoney, [NSThread currentThread]);
}
- (void)__saveMoney {
int oldMoney = self.money;
sleep(1);
oldMoney += 50;
self.money = oldMoney;
NSLog(@"存50元，还剩%d元 -- %@", oldMoney, [NSThread currentThread]);
}
// MARK: - Sale Ticket
- (void)ticketTest {
self.ticketsCount = 15;
dispatch_queue_t queue = dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0);
dispatch_async(queue, ^{
for (int i = 0; i < 5; ++i) {
[self __saleTicket];
}
});
dispatch_async(queue, ^{
for (int i = 0; i < 5; ++i) {
[self __saleTicket];
}
});
dispatch_async(queue, ^{
for (int i = 0; i < 5; ++i) {
[self __saleTicket];
}
});
}
- (void)__saleTicket {
int oldTicketsCount = self.ticketsCount;
sleep(1);
oldTicketsCount--;
self.ticketsCount = oldTicketsCount;
NSLog(@"还剩%d张票 -- %@", oldTicketsCount, [NSThread currentThread]);
}
- (void)otherTest {
}
@end