iOS – 检测应用程序是否从Xcode运行

#include <Foundation/Foundation.h>
#include <sys/sysctl.h>

/**
 * check if the debugger is attached
 *
 * Taken from https://github.com/plausiblelabs/plcrashreporter/blob/2dd862ce049e6f43feb355308dfc710f3af54c4d/source/Crash%20Demo/main.m#L96
 *
 * @return `YES` if the debugger is attached to the current process,`NO` otherwise
 */
- (BOOL)isDebuggerAttached {
  static BOOL debuggerIsAttached = NO;

  static dispatch_once_t debuggerPreDicate;
  dispatch_once(&debuggerPreDicate,^{
    struct kinfo_proc info;
    size_t info_size = sizeof(info);
    int name[4];

    name[0] = CTL_KERN;
    name[1] = KERN_PROc;
    name[2] = KERN_PROC_PID;
    name[3] = getpid(); // from unistd.h,included by Foundation

    if (sysctl(name,4,&info,&info_size,NULL,0) == -1) {
      NSLog(@"[HockeySDK] ERROR: checking for a running debugger via sysctl() Failed: %s",strerror(errno));
      debuggerIsAttached = false;
    }

    if (!debuggerIsAttached && (info.kp_proc.p_flag & P_TRACED) != 0)
      debuggerIsAttached = true;
  });

  return debuggerIsAttached;
}