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[wxWidgets.git] / src / mac / corefoundation / utilsexc_cf.cpp

diff --git a/src/mac/corefoundation/utilsexc_cf.cpp b/src/mac/corefoundation/utilsexc_cf.cpp
index 8ab34dd12bc4e99f6ca7dc80beb459ac15a68c4f..2d95454fe9e8e0c3b9cb8fd44a53c9e0902629e3 100644 (file)
--- a/src/mac/corefoundation/utilsexc_cf.cpp
+++ b/src/mac/corefoundation/utilsexc_cf.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        src/mac/corefoundation/utilsexec_cf.cpp
 // Purpose:     Execution-related utilities for Darwin
 /////////////////////////////////////////////////////////////////////////////
 // Name:        src/mac/corefoundation/utilsexec_cf.cpp
 // Purpose:     Execution-related utilities for Darwin

-// Author:      David Elliott
+// Author:      David Elliott, Ryan Norton (wxMacExecute)

 // Modified by: Stefan Csomor (added necessary wxT for unicode builds)
 // Created:     2004-11-04
 // RCS-ID:      $Id$
 // Modified by: Stefan Csomor (added necessary wxT for unicode builds)
 // Created:     2004-11-04
 // RCS-ID:      $Id$

-// Copyright:   (c) David Elliott
-// Licence:    wxWindows licence
+// Copyright:   (c) David Elliott, Ryan Norton
+// Licence:     wxWindows licence

 // Notes:       This code comes from src/mac/carbon/utilsexc.cpp,1.11
 /////////////////////////////////////////////////////////////////////////////
 
 // Notes:       This code comes from src/mac/carbon/utilsexc.cpp,1.11
 /////////////////////////////////////////////////////////////////////////////
 


@@ -16,96 +16,103 @@
     #include "wx/utils.h"
 #endif //ndef WX_PRECOMP
 #include "wx/unix/execute.h"
     #include "wx/utils.h"
 #endif //ndef WX_PRECOMP
 #include "wx/unix/execute.h"

+#include "wx/stdpaths.h"
+#include "wx/app.h"
+#include "wx/apptrait.h"
+#include "wx/thread.h"
+#include "wx/process.h"

 
 

-#include <CoreFoundation/CFMachPort.h>

 #include <sys/wait.h>
 #include <sys/wait.h>

-extern "C" {
-#include <mach/mach.h>
-}

 
 

-void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data)
+#include <CoreFoundation/CFSocket.h>
+
+/*!
+    Called due to source signal detected by the CFRunLoop.
+    This is nearly identical to the wxGTK equivalent.
+ */
+extern "C" void WXCF_EndProcessDetector(CFSocketRef s,
+                                        CFSocketCallBackType WXUNUSED(callbackType),
+                                        CFDataRef WXUNUSED(address),
+                                        void const *WXUNUSED(data),
+                                        void *info)

 {
 {

-       wxEndProcessData *proc_data = (wxEndProcessData*)data;
-       wxLogDebug(wxT("Wow.. this actually worked!"));
-       int status = 0;
-       int rc = waitpid(abs(proc_data->pid), &status, WNOHANG);
-       if(!rc)
-       {
-               wxLogDebug(wxT("Mach port was invalidated, but process hasn't terminated!"));
-               return;
-       }
-       if((rc != -1) && WIFEXITED(status))
-               proc_data->exitcode = WEXITSTATUS(status);
-       else
-               proc_data->exitcode = -1;
-       wxHandleProcessTermination(proc_data);
+    /*
+        Either our pipe was closed or the process ended successfully.  Either way,
+        we're done.  It's not if waitpid is going to magically succeed when
+        we get fired again.  CFSocketInvalidate closes the fd for us and also
+        invalidates the run loop source for us which should cause it to
+        release the CFSocket (thus causing it to be deallocated) and remove
+        itself from the runloop which should release it and cause it to also
+        be deallocated.  Of course, it's possible the RunLoop hangs onto
+        one or both of them by retaining/releasing them within its stack
+        frame.  However, that shouldn't be depended on.  Assume that s is
+        deallocated due to the following call.
+     */
+    CFSocketInvalidate(s);
+
+    // Now tell wx that the process has ended.
+    wxHandleProcessTermination(static_cast<wxEndProcessData *>(info));

 }
 
 }
 

-int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
+/*!
+    Implements the GUI-specific AddProcessCallback() for both wxMac and
+    wxCocoa using the CFSocket/CFRunLoop API which is available to both.
+    Takes advantage of the fact that sockets on UNIX are just regular
+    file descriptors and thus even a non-socket file descriptor can
+    apparently be used with CFSocket so long as you only tell CFSocket
+    to do things with it that would be valid for a non-socket fd.
+ */
+int wxGUIAppTraits::AddProcessCallback(wxEndProcessData *proc_data, int fd)

 {
 {

-    if(pid < 1)
-        return -1;
-    kern_return_t    kernResult;
-    mach_port_t    taskOfOurProcess;
-    mach_port_t    machPortForProcess;
-    taskOfOurProcess = mach_task_self();
-    if(taskOfOurProcess == MACH_PORT_NULL)
-    {
-        wxLogDebug(wxT("No mach_task_self()"));
-        return -1;
-    }
-    wxLogDebug(wxT("pid=%d"),pid);
-    kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess);
-    if(kernResult != KERN_SUCCESS)
-    {
-        wxLogDebug(wxT("no task_for_pid()"));
-        // try seeing if it is already dead or something
-        // FIXME: a better method would be to call the callback function
-        // from idle time until the process terminates. Of course, how
-        // likely is it that it will take more than 0.1 seconds for the
-        // mach terminate event to make its way to the BSD subsystem?
-        usleep(100); // sleep for 0.1 seconds
-        wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data);
-        return -1;
-    }
-    CFMachPortContext termcb_contextinfo;
-    termcb_contextinfo.version = NULL;
-    termcb_contextinfo.info = (void*)proc_data;
-    termcb_contextinfo.retain = NULL;
-    termcb_contextinfo.release = NULL;
-    termcb_contextinfo.copyDescription = NULL;
-    CFMachPortRef    CFMachPortForProcess;
-    Boolean        ShouldFreePort;
-    CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort);
-    if(!CFMachPortForProcess)
+    static int s_last_tag = 0;
+    CFSocketContext context =
+    {   0
+    ,   static_cast<void*>(proc_data)
+    ,   NULL
+    ,   NULL
+    ,   NULL
+    };
+    CFSocketRef cfSocket = CFSocketCreateWithNative(kCFAllocatorDefault,fd,kCFSocketReadCallBack,&WXCF_EndProcessDetector,&context);
+    if(cfSocket == NULL)

     {
     {

-        wxLogDebug(wxT("No CFMachPortForProcess"));
-        mach_port_deallocate(taskOfOurProcess, machPortForProcess);
-        return -1;
+        wxLogError(wxT("Failed to create socket for end process detection"));
+        return 0;

     }
     }

-    if(ShouldFreePort)
+    CFRunLoopSourceRef runLoopSource = CFSocketCreateRunLoopSource(kCFAllocatorDefault, cfSocket, /*highest priority:*/0);
+    if(runLoopSource == NULL)

     {
     {

-        kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
-        if(kernResult!=KERN_SUCCESS)
-        {
-            wxLogDebug(wxT("Couldn't deallocate mach port"));
-            return -1;
-        }
+        wxLogError(wxT("Failed to create CFRunLoopSource from CFSocket for end process detection"));
+        // closes the fd.. we can't really stop it, nor do we necessarily want to.
+        CFSocketInvalidate(cfSocket);
+        CFRelease(cfSocket);
+        return 0;

     }
     }

-    CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect);
-    CFRunLoopSourceRef    runloopsource;
-    runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0);
-    if(!runloopsource)
-    {
-        wxLogDebug(wxT("Couldn't create runloopsource"));
-        return -1;
-    }
-    
-    CFRelease(CFMachPortForProcess);
+    // Now that the run loop source has the socket retained and we no longer
+    // need to refer to it within this method, we can release it.
+    CFRelease(cfSocket);
+
+    CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopCommonModes);
+    // Now that the run loop has the source retained we can release it.
+    CFRelease(runLoopSource);
+
+    /*
+        Feed wx some bullshit.. we don't use it since CFSocket helpfully passes
+        itself into our callback and that's enough to be able to
+        CFSocketInvalidate it which is all we need to do to get everything we
+        just created to be deallocated.
+     */
+    return ++s_last_tag;
+}

 
 

-    CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode);
-    CFRelease(runloopsource);
-    wxLogDebug(wxT("Successfully added notification to the runloop"));
-    return 0;
+/////////////////////////////////////////////////////////////////////////////
+
+// NOTE: This doesn't really belong here but this was a handy file to
+// put it in because it's already compiled for wxCocoa and wxMac GUI lib.
+#if wxUSE_STDPATHS
+static wxStandardPathsCF gs_stdPaths;
+wxStandardPathsBase& wxGUIAppTraits::GetStandardPaths()
+{
+    return gs_stdPaths;

 }
 }

+#endif