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, Ryan Norton (wxMacExecute)
   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, Ryan Norton
   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
  23
  24 #include <CoreFoundation/CFMachPort.h>
  25 #include <sys/wait.h>
  26 extern "C" {
  27 #include <mach/mach.h>
  28 }
  29
  30 void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data)
  31 {
  32     wxEndProcessData *proc_data = (wxEndProcessData*)data;
  33     wxLogDebug(wxT("Process ended"));
  34     int status = 0;
  35     int rc = waitpid(abs(proc_data->pid), &status, WNOHANG);
  36     if(!rc)
  37     {
  38         wxLogDebug(wxT("Mach port was invalidated, but process hasn't terminated!"));
  39         return;
  40     }
  41     if((rc != -1) && WIFEXITED(status))
  42         proc_data->exitcode = WEXITSTATUS(status);
  43     else
  44         proc_data->exitcode = -1;
  45     wxHandleProcessTermination(proc_data);
  46 }
  47
  48 int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
  49 {
  50     if(pid < 1)
  51         return -1;
  52     kern_return_t    kernResult;
  53     mach_port_t    taskOfOurProcess;
  54     mach_port_t    machPortForProcess;
  55     taskOfOurProcess = mach_task_self();
  56     if(taskOfOurProcess == MACH_PORT_NULL)
  57     {
  58         wxLogDebug(wxT("No mach_task_self()"));
  59         return -1;
  60     }
  61     wxLogDebug(wxT("pid=%d"),pid);
  62     kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess);
  63     if(kernResult != KERN_SUCCESS)
  64     {
  65         wxLogDebug(wxT("no task_for_pid()"));
  66         // try seeing if it is already dead or something
  67         // FIXME: a better method would be to call the callback function
  68         // from idle time until the process terminates. Of course, how
  69         // likely is it that it will take more than 0.1 seconds for the
  70         // mach terminate event to make its way to the BSD subsystem?
  71         usleep(100); // sleep for 0.1 seconds
  72         wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data);
  73         return -1;
  74     }
  75     CFMachPortContext termcb_contextinfo;
  76     termcb_contextinfo.version = 0;
  77     termcb_contextinfo.info = (void*)proc_data;
  78     termcb_contextinfo.retain = NULL;
  79     termcb_contextinfo.release = NULL;
  80     termcb_contextinfo.copyDescription = NULL;
  81     CFMachPortRef    CFMachPortForProcess;
  82     Boolean        ShouldFreePort;
  83     CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort);
  84     if(!CFMachPortForProcess)
  85     {
  86         wxLogDebug(wxT("No CFMachPortForProcess"));
  87         mach_port_deallocate(taskOfOurProcess, machPortForProcess);
  88         return -1;
  89     }
  90     if(ShouldFreePort)
  91     {
  92         kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
  93         if(kernResult!=KERN_SUCCESS)
  94         {
  95             wxLogDebug(wxT("Couldn't deallocate mach port"));
  96             return -1;
  97         }
  98     }
  99     CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect);
 100     CFRunLoopSourceRef    runloopsource;
 101     runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0);
 102     if(!runloopsource)
 103     {
 104         wxLogDebug(wxT("Couldn't create runloopsource"));
 105         return -1;
 106     }
 107
 108     CFRelease(CFMachPortForProcess);
 109
 110     CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode);
 111     CFRelease(runloopsource);
 112     wxLogDebug(wxT("Successfully added notification to the runloop"));
 113     return 0;
 114 }
 115
 116 // NOTE: This doens't really belong here but this was a handy file to
 117 // put it in because it's already compiled for wxCocoa and wxMac GUI lib.
 118 static wxStandardPathsCF gs_stdPaths;
 119 wxStandardPathsBase& wxGUIAppTraits::GetStandardPaths()
 120 {
 121     return gs_stdPaths;
 122 }
 123