src/mac/utilsexc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utilsexec.cpp
   3 // Purpose:     Execution-related utilities
   4 // Author:      Stefan Csomor
   5 // Modified by: David Elliott
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "wx/log.h"
  17 #include "wx/utils.h"
  18 #ifdef __DARWIN__
  19 #include "wx/unix/execute.h"
  20 #include <unistd.h>
  21 #include <sys/wait.h>
  22 #include <mach/mach.h>
  23 #include <CoreFoundation/CFMachPort.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #ifndef __DARWIN__
  31 #define wxEXECUTE_WIN_MESSAGE 10000
  32
  33 long wxExecute(const wxString& command, int flags, wxProcess *handler)
  34 {
  35     // TODO
  36     wxFAIL_MSG( _T("wxExecute() not yet implemented") );
  37     return 0;
  38 }
  39 #endif
  40
  41 #ifdef __DARWIN__
  42 void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data)
  43 {
  44         wxEndProcessData *proc_data = (wxEndProcessData*)data;
  45         wxLogDebug("Wow.. this actually worked!");
  46         int status = 0;
  47         int rc = waitpid(abs(proc_data->pid), &status, WNOHANG);
  48         if(!rc)
  49         {
  50                 wxLogDebug("Mach port was invalidated, but process hasn't terminated!");
  51                 return;
  52         }
  53         if((rc != -1) && WIFEXITED(status))
  54                 proc_data->exitcode = WEXITSTATUS(status);
  55         else
  56                 proc_data->exitcode = -1;
  57         wxHandleProcessTermination(proc_data);
  58 }
  59
  60 int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
  61 {
  62     if(pid < 1)
  63         return -1;
  64     kern_return_t    kernResult;
  65     mach_port_t    taskOfOurProcess;
  66     mach_port_t    machPortForProcess;
  67     taskOfOurProcess = mach_task_self();
  68     if(taskOfOurProcess == MACH_PORT_NULL)
  69     {
  70         wxLogDebug("No mach_task_self()");
  71         return -1;
  72     }
  73     wxLogDebug("pid=%d",pid);
  74     kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess);
  75     if(kernResult != KERN_SUCCESS)
  76     {
  77         wxLogDebug("no task_for_pid()");
  78         // try seeing if it is already dead or something
  79         // FIXME: a better method would be to call the callback function
  80         // from idle time until the process terminates. Of course, how
  81         // likely is it that it will take more than 0.1 seconds for the
  82         // mach terminate event to make its way to the BSD subsystem?
  83         usleep(100); // sleep for 0.1 seconds
  84         wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data);
  85         return -1;
  86     }
  87     CFMachPortContext termcb_contextinfo;
  88     termcb_contextinfo.version = NULL;
  89     termcb_contextinfo.info = (void*)proc_data;
  90     termcb_contextinfo.retain = NULL;
  91     termcb_contextinfo.release = NULL;
  92     termcb_contextinfo.copyDescription = NULL;
  93     CFMachPortRef    CFMachPortForProcess;
  94     Boolean        ShouldFreePort;
  95     CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort);
  96     if(!CFMachPortForProcess)
  97     {
  98         wxLogDebug("No CFMachPortForProcess");
  99         mach_port_deallocate(taskOfOurProcess, machPortForProcess);
 100         return -1;
 101     }
 102     if(ShouldFreePort)
 103     {
 104         kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
 105         if(kernResult!=KERN_SUCCESS)
 106         {
 107             wxLogDebug("Couldn't deallocate mach port");
 108             return -1;
 109         }
 110     }
 111     CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect);
 112     CFRunLoopSourceRef    runloopsource;
 113     runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0);
 114     if(!runloopsource)
 115     {
 116         wxLogDebug("Couldn't create runloopsource");
 117         return -1;
 118     }
 119
 120     CFRelease(CFMachPortForProcess);
 121
 122     CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode);
 123     CFRelease(runloopsource);
 124     wxLogDebug("Successfully added notification to the runloop");
 125     return 0;
 126 }
 127 #endif