(`Manage Your Applications - View Details - Crash Reports`)获取用户的`crash`日志。不过这并不是100%有效的,而且大多数开发者并不依赖于此,因为这需要用户设备同意上传相关信息。**产生崩溃日志的原因**> ... Exception Type: EXC_CRASH (SIGABRT) //异常类型Exception Codes: 0x0000000000000000, 0x0000000000000000Exception Note: EXC_CORPSE_NOTIFYTriggered by Thread: 21Application Specific Information:...
(exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value;}// Adding a lock prefix to an instruction on MP machine#define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: "```可以看到,CAS 同样是使用 lock 指令前缀来实现的,那么 lock 指令前缀具体是怎么实现的呢?#### 1.2.4 LOCK#信号具体来说,代码中的指令前面声明了 LOCK 前缀...