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 extern "C" {
  23 #include <mach/mach.h>
  24 }
  25 #include <CoreFoundation/CFMachPort.h>
  26 #endif
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #ifndef __DARWIN__
  33 #define wxEXECUTE_WIN_MESSAGE 10000
  34
  35 long wxExecute(const wxString& command, int flags, wxProcess *handler)
  36 {
  37     // TODO
  38     wxFAIL_MSG( _T("wxExecute() not yet implemented") );
  39     return 0;
  40 }
  41 #endif
  42
  43 #ifdef __DARWIN__
  44 void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data)
  45 {
  46         wxEndProcessData *proc_data = (wxEndProcessData*)data;
  47         wxLogDebug("Wow.. this actually worked!");
  48         int status = 0;
  49         int rc = waitpid(abs(proc_data->pid), &status, WNOHANG);
  50         if(!rc)
  51         {
  52                 wxLogDebug("Mach port was invalidated, but process hasn't terminated!");
  53                 return;
  54         }
  55         if((rc != -1) && WIFEXITED(status))
  56                 proc_data->exitcode = WEXITSTATUS(status);
  57         else
  58                 proc_data->exitcode = -1;
  59         wxHandleProcessTermination(proc_data);
  60 }
  61
  62 int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
  63 {
  64     if(pid < 1)
  65         return -1;
  66     kern_return_t    kernResult;
  67     mach_port_t    taskOfOurProcess;
  68     mach_port_t    machPortForProcess;
  69     taskOfOurProcess = mach_task_self();
  70     if(taskOfOurProcess == MACH_PORT_NULL)
  71     {
  72         wxLogDebug("No mach_task_self()");
  73         return -1;
  74     }
  75     wxLogDebug("pid=%d",pid);
  76     kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess);
  77     if(kernResult != KERN_SUCCESS)
  78     {
  79         wxLogDebug("no task_for_pid()");
  80         // try seeing if it is already dead or something
  81         // FIXME: a better method would be to call the callback function
  82         // from idle time until the process terminates. Of course, how
  83         // likely is it that it will take more than 0.1 seconds for the
  84         // mach terminate event to make its way to the BSD subsystem?
  85         usleep(100); // sleep for 0.1 seconds
  86         wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data);
  87         return -1;
  88     }
  89     CFMachPortContext termcb_contextinfo;
  90     termcb_contextinfo.version = NULL;
  91     termcb_contextinfo.info = (void*)proc_data;
  92     termcb_contextinfo.retain = NULL;
  93     termcb_contextinfo.release = NULL;
  94     termcb_contextinfo.copyDescription = NULL;
  95     CFMachPortRef    CFMachPortForProcess;
  96     Boolean        ShouldFreePort;
  97     CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort);
  98     if(!CFMachPortForProcess)
  99     {
 100         wxLogDebug("No CFMachPortForProcess");
 101         mach_port_deallocate(taskOfOurProcess, machPortForProcess);
 102         return -1;
 103     }
 104     if(ShouldFreePort)
 105     {
 106         kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
 107         if(kernResult!=KERN_SUCCESS)
 108         {
 109             wxLogDebug("Couldn't deallocate mach port");
 110             return -1;
 111         }
 112     }
 113     CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect);
 114     CFRunLoopSourceRef    runloopsource;
 115     runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0);
 116     if(!runloopsource)
 117     {
 118         wxLogDebug("Couldn't create runloopsource");
 119         return -1;
 120     }
 121
 122     CFRelease(CFMachPortForProcess);
 123
 124     CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode);
 125     CFRelease(runloopsource);
 126     wxLogDebug("Successfully added notification to the runloop");
 127     return 0;
 128 }
 129 #endif