获取ios系统的进程列表(pid, names, paid, status)

// Get the list of processes and all information about them
@try {
// Make a new integer array holding all the kernel processes
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0};

// Make a new size of 4
size_t miblen = 4;

size_t size = 0;
int st = sysctl(mib, (int)miblen, NULL, &size, NULL, 0);

// Set up the processes and new process struct
struct kinfo_proc *process = NULL;
struct kinfo_proc *newprocess = NULL;

// do, while loop rnning through all the processes
do {
size += size / 10;
newprocess = realloc(process, size);

if (!newprocess) {
if (process) free(process);
// Error
return nil;
}

process = newprocess;
st = sysctl(mib, (int)miblen, process, &size, NULL, 0);

} while (st == -1 && errno == ENOMEM);

if (st == 0) {
if (size % sizeof(struct kinfo_proc) == 0) {
int nprocess = (int)(size / sizeof(struct kinfo_proc));

if (nprocess) {
NSMutableArray *array = [[NSMutableArray alloc] init];

for (int i = nprocess - 1; i >= 0; i--) {

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 *processPriority = [[NSString alloc] initWithFormat:@"%d", process[i].kp_proc.p_priority];
NSDate   *processStartDate = [NSDate dateWithTimeIntervalSince1970:process[i].kp_proc.p_un.__p_starttime.tv_sec];
NSString       *processParentID = [[NSString alloc] initWithFormat:@"%d", [self parentPIDForProcess:(int)process[i].kp_proc.p_pid]];
NSString       *processStatus = [[NSString alloc] initWithFormat:@"%d", (int)process[i].kp_proc.p_stat];
NSString       *processFlags = [[NSString alloc] initWithFormat:@"%d", (int)process[i].kp_proc.p_flag];

// Check to make sure all values are valid (if not, make them)
if (processID == nil || processID.length <= 0) {
// Invalid value
processID = @"Unkown";
}
if (processName == nil || processName.length <= 0) {
// Invalid value
processName = @"Unkown";
}
if (processPriority == nil || processPriority.length <= 0) {
// Invalid value
processPriority = @"Unkown";
}
if (processStartDate == nil) {
// Invalid value
processStartDate = [NSDate date];
}
if (processParentID == nil || processParentID.length <= 0) {
// Invalid value
processParentID = @"Unkown";
}
if (processStatus == nil || processStatus.length <= 0) {
// Invalid value
processStatus = @"Unkown";
}
if (processFlags == nil || processFlags.length <= 0) {
// Invalid value
processFlags = @"Unkown";
}

// Create an array of the objects
NSArray *ItemArray = [NSArray arrayWithObjects:processID, processName, processPriority, processStartDate, processParentID, processStatus, processFlags, nil];

// Create an array of keys
NSArray *KeyArray = [NSArray arrayWithObjects:@"PID", @"Name", @"Priority", @"StartDate", @"ParentID", @"Status", @"Flags", nil];

// Create the dictionary
NSDictionary *dict = [[NSDictionary alloc] initWithObjects:ItemArray forKeys:KeyArray];

// Add the objects to the array
[array addObject:dict];
}

// Make sure the array is usable
if (array.count <= 0) {
// Error, nothing in array
return nil;
}

// Free the process
free(process);

// Successful
return array;
}
}
}

// Something failed
return nil;
}
@catch (NSException * ex) {
// Error
return nil;
}