src/mac/corefoundation/utilsexc_cf.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/corefoundation/utilsexec_cf.cpp
   3 // Purpose:     Execution-related utilities for Darwin
   4 // Author:      David Elliott
   5 // Modified by: Stefan Csomor (added necessary wxT for unicode builds)
   6 // Created:     2004-11-04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Elliott
   9 // Licence:     wxWindows licence
  10 // Notes:       This code comes from src/mac/carbon/utilsexc.cpp,1.11
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include "wx/wxprec.h"
  14 #ifndef WX_PRECOMP
  15     #include "wx/log.h"
  16     #include "wx/utils.h"
  17 #endif //ndef WX_PRECOMP
  18 #include "wx/unix/execute.h"
  19 #include "wx/stdpaths.h"
  20 #include "wx/apptrait.h"
  21
  22 #include <CoreFoundation/CFMachPort.h>
  23 #include <sys/wait.h>
  24 extern "C" {
  25 #include <mach/mach.h>
  26 }
  27
  28 void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data)
  29 {
  30     wxEndProcessData *proc_data = (wxEndProcessData*)data;
  31     wxLogDebug(wxT("Wow.. this actually worked!"));
  32     int status = 0;
  33     int rc = waitpid(abs(proc_data->pid), &status, WNOHANG);
  34     if(!rc)
  35     {
  36         wxLogDebug(wxT("Mach port was invalidated, but process hasn't terminated!"));
  37         return;
  38     }
  39     if((rc != -1) && WIFEXITED(status))
  40         proc_data->exitcode = WEXITSTATUS(status);
  41     else
  42         proc_data->exitcode = -1;
  43     wxHandleProcessTermination(proc_data);
  44 }
  45
  46 int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
  47 {
  48     if(pid < 1)
  49         return -1;
  50     kern_return_t    kernResult;
  51     mach_port_t    taskOfOurProcess;
  52     mach_port_t    machPortForProcess;
  53     taskOfOurProcess = mach_task_self();
  54     if(taskOfOurProcess == MACH_PORT_NULL)
  55     {
  56         wxLogDebug(wxT("No mach_task_self()"));
  57         return -1;
  58     }
  59     wxLogDebug(wxT("pid=%d"),pid);
  60     kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess);
  61     if(kernResult != KERN_SUCCESS)
  62     {
  63         wxLogDebug(wxT("no task_for_pid()"));
  64         // try seeing if it is already dead or something
  65         // FIXME: a better method would be to call the callback function
  66         // from idle time until the process terminates. Of course, how
  67         // likely is it that it will take more than 0.1 seconds for the
  68         // mach terminate event to make its way to the BSD subsystem?
  69         usleep(100); // sleep for 0.1 seconds
  70         wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data);
  71         return -1;
  72     }
  73     CFMachPortContext termcb_contextinfo;
  74     termcb_contextinfo.version = NULL;
  75     termcb_contextinfo.info = (void*)proc_data;
  76     termcb_contextinfo.retain = NULL;
  77     termcb_contextinfo.release = NULL;
  78     termcb_contextinfo.copyDescription = NULL;
  79     CFMachPortRef    CFMachPortForProcess;
  80     Boolean        ShouldFreePort;
  81     CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort);
  82     if(!CFMachPortForProcess)
  83     {
  84         wxLogDebug(wxT("No CFMachPortForProcess"));
  85         mach_port_deallocate(taskOfOurProcess, machPortForProcess);
  86         return -1;
  87     }
  88     if(ShouldFreePort)
  89     {
  90         kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
  91         if(kernResult!=KERN_SUCCESS)
  92         {
  93             wxLogDebug(wxT("Couldn't deallocate mach port"));
  94             return -1;
  95         }
  96     }
  97     CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect);
  98     CFRunLoopSourceRef    runloopsource;
  99     runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0);
 100     if(!runloopsource)
 101     {
 102         wxLogDebug(wxT("Couldn't create runloopsource"));
 103         return -1;
 104     }
 105
 106     CFRelease(CFMachPortForProcess);
 107
 108     CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode);
 109     CFRelease(runloopsource);
 110     wxLogDebug(wxT("Successfully added notification to the runloop"));
 111     return 0;
 112 }
 113
 114 // NOTE: This doens't really belong here but this was a handy file to
 115 // put it in because it's already compiled for wxCocoa and wxMac GUI lib.
 116 static wxStandardPathsCF gs_stdPaths;
 117 wxStandardPathsBase& wxGUIAppTraits::GetStandardPaths()
 118 {
 119     return gs_stdPaths;
 120 }
 121