iphone获取当前运行进程列表
通过调用 sys/sysctl.h 读取系统内核获取进程列表 。
代码悦德财富：https://yuedecaifu.com
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+(NSMutableArray *)runningProcesses { //指定名字参数，按照顺序第一个元素指定本请求定向到内核的哪个子系统，第二个及其后元素依次细化指定该系统的某个部分。 //CTL_KERN，KERN_PROC,KERN_PROC_ALL 正在运行的所有进程 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL ,0}; size_t miblen = 4; //值-结果参数：函数被调用时，size指向的值指定该缓冲区的大小；函数返回时，该值给出内核存放在该缓冲区中的数据量 //如果这个缓冲不够大，函数就返回ENOMEM错误 size_t size; //返回0，成功；返回-1，失败 int st = sysctl(mib, miblen, NULL, &size, NULL, 0); struct kinfo_proc * process = NULL; struct kinfo_proc * newprocess = NULL; do { size += size / 10; newprocess = realloc(process, size); if (!newprocess) { if (process) { free(process); process = NULL; } return nil; } process = newprocess; st = sysctl(mib, miblen, process, &size, NULL, 0); } while (st == -1 && errno == ENOMEM); if (st == 0) { if (size % sizeof(struct kinfo_proc) == 0) { int nprocess = size / sizeof(struct kinfo_proc); if (nprocess) { NSMutableArray * array = [[NSMutableArray alloc] init]; for (int i = nprocess - 1; i >= 0; i--) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSString * processID = [[NSString alloc] initWithFormat:@"%d", process[i].kp_proc.p_pid]; NSString * processName = [[NSString alloc] initWithFormat:@"%s", process[i].kp_proc.p_comm]; NSString * proc_CPU = [[NSString alloc] initWithFormat:@"%d", process[i].kp_proc.p_pctcpu]; //the process duration //double t = [[NSDate date] timeIntervalSince1970] - process[i].kp_proc.p_un.__p_starttime.tv_sec; NSString * proc_useTiem = [[NSString alloc] initWithFormat:@"%s",asctime(localtime(&(process[i].kp_proc.p_un.__p_starttime.tv_sec)))]; NSMutableDictionary *dic = [[NSMutableDictionary alloc] init]; [dic setValue:processID forKey:@"ProcessID"]; [dic setValue:processName forKey:@"ProcessName"]; [dic setValue:proc_CPU forKey:@"ProcessCPU"]; [dic setValue:proc_useTiem forKey:@"ProcessUseTime"]; [processID release]; [processName release]; [proc_CPU release]; [proc_useTiem release]; [array addObject:dic]; [dic release]; [pool release]; } free(process); process = NULL; return array; } } } return nil;} |
