使用NSWorkspace获取所有正在运行的进程

Question

我想获取MacOs中所有正在运行的进程的列表。

当我使用

[myWorkspace runningApplications]; 

我只得到当前用户的应用程序列表。

如何查找所有进程的列表，使用root或mysql所有者。

Answer 1

看一看Technical Q&A QA1123

#include <sys/sysctl.h> 
#include <pwd.h> 
typedef struct kinfo_proc kinfo_proc; 

static int GetBSDProcessList(kinfo_proc **procList, size_t *procCount) 
// Returns a list of all BSD processes on the system. This routine 
// allocates the list and puts it in *procList and a count of the 
// number of entries in *procCount. You are responsible for freeing 
// this list (use "free" from System framework). 
// On success, the function returns 0. 
// On error, the function returns a BSD errno value. 
{ 
    int     err; 
    kinfo_proc *  result; 
    bool    done; 
    static const int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0 }; 
    // Declaring name as const requires us to cast it when passing it to 
    // sysctl because the prototype doesn't include the const modifier. 
    size_t    length; 

    // assert(procList != NULL); 
    // assert(*procList == NULL); 
    // assert(procCount != NULL); 

    *procCount = 0; 

    // We start by calling sysctl with result == NULL and length == 0. 
    // That will succeed, and set length to the appropriate length. 
    // We then allocate a buffer of that size and call sysctl again 
    // with that buffer. If that succeeds, we're done. If that fails 
    // with ENOMEM, we have to throw away our buffer and loop. Note 
    // that the loop causes use to call sysctl with NULL again; this 
    // is necessary because the ENOMEM failure case sets length to 
    // the amount of data returned, not the amount of data that 
    // could have been returned. 

    result = NULL; 
    done = false; 
    do { 
     assert(result == NULL); 

     // Call sysctl with a NULL buffer. 

     length = 0; 
     err = sysctl((int *) name, (sizeof(name)/sizeof(*name)) - 1, 
        NULL, &length, 
        NULL, 0); 
     if (err == -1) { 
      err = errno; 
     } 

     // Allocate an appropriately sized buffer based on the results 
     // from the previous call. 

     if (err == 0) { 
      result = malloc(length); 
      if (result == NULL) { 
       err = ENOMEM; 
      } 
     } 

     // Call sysctl again with the new buffer. If we get an ENOMEM 
     // error, toss away our buffer and start again. 

     if (err == 0) { 
      err = sysctl((int *) name, (sizeof(name)/sizeof(*name)) - 1, 
         result, &length, 
         NULL, 0); 
      if (err == -1) { 
       err = errno; 
      } 
      if (err == 0) { 
       done = true; 
      } else if (err == ENOMEM) { 
       assert(result != NULL); 
       free(result); 
       result = NULL; 
       err = 0; 
      } 
     } 
    } while (err == 0 && ! done); 

    // Clean up and establish post conditions. 

    if (err != 0 && result != NULL) { 
     free(result); 
     result = NULL; 
    } 
    *procList = result; 
    if (err == 0) { 
     *procCount = length/sizeof(kinfo_proc); 
    } 

    assert((err == 0) == (*procList != NULL)); 

    return err; 
} 

+ (NSArray*)getBSDProcessList 
{ 
    kinfo_proc *mylist =NULL; 
    size_t mycount = 0; 
    GetBSDProcessList(&mylist, &mycount); 

    NSMutableArray *processes = [NSMutableArray arrayWithCapacity:(int)mycount]; 

    for (int i = 0; i < mycount; i++) { 
     struct kinfo_proc *currentProcess = &mylist[i]; 
     struct passwd *user = getpwuid(currentProcess->kp_eproc.e_ucred.cr_uid); 
     NSMutableDictionary *entry = [NSMutableDictionary dictionaryWithCapacity:4]; 

     NSNumber *processID = [NSNumber numberWithInt:currentProcess->kp_proc.p_pid]; 
     NSString *processName = [NSString stringWithFormat: @"%s",currentProcess->kp_proc.p_comm]; 
     if (processID)[entry setObject:processID forKey:@"processID"]; 
     if (processName)[entry setObject:processName forKey:@"processName"]; 

     if (user){ 
      NSNumber *userID = [NSNumber numberWithUnsignedInt:currentProcess->kp_eproc.e_ucred.cr_uid]; 
      NSString *userName = [NSString stringWithFormat: @"%s",user->pw_name]; 

      if (userID)[entry setObject:userID forKey:@"userID"]; 
      if (userName)[entry setObject:userName forKey:@"userName"]; 
     } 

     [processes addObject:[NSDictionary dictionaryWithDictionary:entry]]; 
    } 
    free(mylist); 

    return [NSArray arrayWithArray:processes]; 
}