我已经成功地实现了这个清单上的代码，获取了运行中所有进程及其ID的列表。现在我需要提取每个进程使用CPU的时间。
我尝试参考代码中的键，但是当我尝试打印“CPU时间刻度”时，我得到所有进程的零值。而且，即使我得到了一个值，我也不确定“CPU时间刻度”是否正是我要查找的内容。
我尝试参考代码中的键，但是当我尝试打印“CPU时间刻度”时，我得到所有进程的零值。而且，即使我得到了一个值，我也不确定“CPU时间刻度”是否正是我要查找的内容。
struct vmspace *p_vmspace; /* Address space. */
struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */
int p_flag; /* P_* flags. */
char p_stat; /* S* process status. */
pid_t p_pid; /* Process identifier. */
pid_t p_oppid; /* Save parent pid during ptrace. XXX */
int p_dupfd; /* Sideways return value from fdopen. XXX */
/* Mach related */
caddr_t user_stack; /* where user stack was allocated */
void *exit_thread; /* XXX Which thread is exiting? */
int p_debugger; /* allow to debug */
boolean_t sigwait; /* indication to suspend */
/* scheduling */
u_int p_estcpu; /* Time averaged value of p_cpticks. */
int p_cpticks; /* Ticks of cpu time. */
fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
void *p_wchan; /* Sleep address. */
char *p_wmesg; /* Reason for sleep. */
u_int p_swtime; /* Time swapped in or out. */
u_int p_slptime; /* Time since last blocked. */
struct itimerval p_realtimer; /* Alarm timer. */
struct timeval p_rtime; /* Real time. */
u_quad_t p_uticks; /* Statclock hits in user mode. */
u_quad_t p_sticks; /* Statclock hits in system mode. */
u_quad_t p_iticks; /* Statclock hits processing intr. */
int p_traceflag; /* Kernel trace points. */
struct vnode *p_tracep; /* Trace to vnode. */
int p_siglist; /* DEPRECATED */
struct vnode *p_textvp; /* Vnode of executable. */
int p_holdcnt; /* If non-zero, don't swap. */
sigset_t p_sigmask; /* DEPRECATED. */
sigset_t p_sigignore; /* Signals being ignored. */
sigset_t p_sigcatch; /* Signals being caught by user. */
u_char p_priority; /* Process priority. */
u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
char p_nice; /* Process "nice" value. */
char p_comm[MAXCOMLEN+1];
struct pgrp *p_pgrp; /* Pointer to process group. */
struct user *p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
u_short p_xstat; /* Exit status for wait; also stop signal. */
u_short p_acflag; /* Accounting flags. */
struct rusage *p_ru; /* Exit information. XXX */
事实上，我也尝试过打印p_cpticks的时间平均值以及其他一些值，但从未得到有趣的结果。以下是我的代码，它打印了检索到的信息（我从cocoabuilder.com获取）：
- (NSDictionary *) getProcessList {
NSMutableDictionary *ProcList = [[NSMutableDictionary alloc] init];
kinfo_proc *mylist;
size_t mycount = 0;
mylist = (kinfo_proc *)malloc(sizeof(kinfo_proc));
GetBSDProcessList(&mylist, &mycount);
printf("There are %d processes.\n", (int)mycount);
NSLog(@" = = = = = = = = = = = = = = =");
int k;
for(k = 0; k < mycount; k++) {
kinfo_proc *proc = NULL;
proc = &mylist[k];
// NSString *processName = [NSString stringWithFormat: @"%s",proc->kp_proc.p_comm];
//[ ProcList setObject: processName forKey: processName ];
// [ ProcList setObject: proc->kp_proc.p_pid forKey: processName];
// printf("ID: %d - NAME: %s\n", proc->kp_proc.p_pid, proc->kp_proc.p_comm);
printf("ID: %d - NAME: %s CPU TIME: %d \n", proc->kp_proc.p_pid, proc->kp_proc.p_comm, proc->kp_proc.p_pid );
// Right click on p_comm and select 'jump to definition' to find other values.
}
free(mylist);
return [ProcList autorelease];
}
谢谢！
编辑：我刚刚为这个问题提供了赏金。我特别想知道每个进程在 CPU 上花费的时间。
如果您能够给出进程正在使用的 %CPU，那就太好了。
代码应该是最优的，因为它将每秒被调用，并且该方法将在所有正在运行的进程上被调用。最好使用 Objective-C。
再次感谢！
编辑2
另外，为什么人们忽略这个问题的任何评论也会很有帮助 :)