/////////////////////////////////////////////////////////////////////////////
// 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: $Id$
-// Copyright: (c) David Elliott
+// Copyright: (c) David Elliott, Ryan Norton
// Licence: wxWindows licence
// Notes: This code comes from src/mac/carbon/utilsexc.cpp,1.11
/////////////////////////////////////////////////////////////////////////////
#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>
-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)
+ 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 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;
+ wxLogError(wxT("Failed to create socket for end process detection"));
+ return 0;
}
- CFMachPortContext termcb_contextinfo;
- termcb_contextinfo.version = 0;
- 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)
+ CFRunLoopSourceRef runLoopSource = CFSocketCreateRunLoopSource(kCFAllocatorDefault, cfSocket, /*highest priority:*/0);
+ if(runLoopSource == NULL)
{
- wxLogDebug(wxT("No CFMachPortForProcess"));
- mach_port_deallocate(taskOfOurProcess, machPortForProcess);
- 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;
}
- if(ShouldFreePort)
- {
- kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess);
- if(kernResult!=KERN_SUCCESS)
- {
- wxLogDebug(wxT("Couldn't deallocate mach port"));
- return -1;
- }
- }
- 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,kCFRunLoopDefaultMode);
- CFRelease(runloopsource);
- wxLogDebug(wxT("Successfully added notification to the runloop"));
- return 0;
+ 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;
}
-// NOTE: This doens't really belong here but this was a handy file to
+/////////////////////////////////////////////////////////////////////////////
+
+// 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
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