X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ef0ed19e9dbccdd06f3cab3cf3145cb92fb2b6de..c07e1e2c855d4b8b9a138773c7ef7cd5c0b71418:/src/unix/utilsunx.cpp diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp index 97f764b829..7f275de250 100644 --- a/src/unix/utilsunx.cpp +++ b/src/unix/utilsunx.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: utilsunx.cpp +// Name: src/unix/utilsunx.cpp // Purpose: generic Unix implementation of many wx functions // Author: Vadim Zeitlin // Id: $Id$ @@ -15,42 +15,104 @@ // headers // ---------------------------------------------------------------------------- -#include "wx/defs.h" -#include "wx/string.h" - -#include "wx/intl.h" -#include "wx/log.h" -#include "wx/app.h" +// for compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" #include "wx/utils.h" + +#define USE_PUTENV (!defined(HAVE_SETENV) && defined(HAVE_PUTENV)) + +#ifndef WX_PRECOMP + #include "wx/string.h" + #include "wx/intl.h" + #include "wx/log.h" + #include "wx/app.h" + #include "wx/wxcrtvararg.h" + #if USE_PUTENV + #include "wx/module.h" + #include "wx/hashmap.h" + #endif +#endif + +#include "wx/apptrait.h" + #include "wx/process.h" #include "wx/thread.h" #include "wx/wfstream.h" +#include "wx/unix/execute.h" +#include "wx/unix/private.h" + +#include +#include // waitpid() + +#ifdef HAVE_SYS_SELECT_H +# include +#endif + +#define HAS_PIPE_INPUT_STREAM (wxUSE_STREAMS && wxUSE_FILE) + +#if HAS_PIPE_INPUT_STREAM + +// define this to let wxexec.cpp know that we know what we're doing +#define _WX_USED_BY_WXEXECUTE_ +#include "../common/execcmn.cpp" + +#endif // HAS_PIPE_INPUT_STREAM + +#if wxUSE_BASE + +#if defined(__MWERKS__) && defined(__MACH__) + #ifndef WXWIN_OS_DESCRIPTION + #define WXWIN_OS_DESCRIPTION "MacOS X" + #endif + #ifndef HAVE_NANOSLEEP + #define HAVE_NANOSLEEP + #endif + #ifndef HAVE_UNAME + #define HAVE_UNAME + #endif + + // our configure test believes we can use sigaction() if the function is + // available but Metrowekrs with MSL run-time does have the function but + // doesn't have sigaction struct so finally we can't use it... + #ifdef __MSL__ + #undef wxUSE_ON_FATAL_EXCEPTION + #define wxUSE_ON_FATAL_EXCEPTION 0 + #endif +#endif + +// not only the statfs syscall is called differently depending on platform, but +// one of its incarnations, statvfs(), takes different arguments under +// different platforms and even different versions of the same system (Solaris +// 7 and 8): if you want to test for this, don't forget that the problems only +// appear if the large files support is enabled #ifdef HAVE_STATFS -# ifdef __BSD__ -# include -# include -# else -# include -# endif + #ifdef __BSD__ + #include + #include + #else // !__BSD__ + #include + #endif // __BSD__/!__BSD__ + + #define wxStatfs statfs + + #ifndef HAVE_STATFS_DECL + // some systems lack statfs() prototype in the system headers (AIX 4) + extern "C" int statfs(const char *path, struct statfs *buf); + #endif #endif // HAVE_STATFS -// not only the statfs syscall is called differently depending on platform, but -// we also can't use "struct statvfs" under Solaris because it breaks down if -// HAVE_LARGEFILE_SUPPORT == 1 and we must use statvfs_t instead #ifdef HAVE_STATVFS #include - #define statfs statvfs - #define wxStatFs statvfs_t -#elif HAVE_STATFS - #define wxStatFs struct statfs -#endif // HAVE_STAT[V]FS + #define wxStatfs statvfs +#endif // HAVE_STATVFS -#if wxUSE_GUI - #include "wx/unix/execute.h" +#if defined(HAVE_STATFS) || defined(HAVE_STATVFS) + // WX_STATFS_T is detected by configure + #define wxStatfs_t WX_STATFS_T #endif // SGI signal.h defines signal handler arguments differently depending on @@ -64,9 +126,8 @@ #include #include #include -#include #include -#include +#include #include #include #include @@ -79,6 +140,12 @@ #include // for uname() #endif // HAVE_UNAME +// Used by wxGetFreeMemory(). +#ifdef __SGI__ + #include + #include // for SAGET and MINFO structures +#endif + // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- @@ -87,26 +154,22 @@ // headers - please add your system here if it is the case for your OS. // SunOS < 5.6 (i.e. Solaris < 2.6) and DG-UX are like this. #if !defined(HAVE_USLEEP) && \ - (defined(__SUN__) && !defined(__SunOs_5_6) && \ + ((defined(__SUN__) && !defined(__SunOs_5_6) && \ !defined(__SunOs_5_7) && !defined(__SUNPRO_CC)) || \ - defined(__osf__) || defined(__EMX__) + defined(__osf__) || defined(__EMX__)) extern "C" { - #ifdef __SUN__ + #ifdef __EMX__ + /* I copied this from the XFree86 diffs. AV. */ + #define INCL_DOSPROCESS + #include + inline void usleep(unsigned long delay) + { + DosSleep(delay ? (delay/1000l) : 1l); + } + #else // Unix int usleep(unsigned int usec); - #else // !Sun - #ifdef __EMX__ - /* I copied this from the XFree86 diffs. AV. */ - #define INCL_DOSPROCESS - #include - inline void usleep(unsigned long delay) - { - DosSleep(delay ? (delay/1000l) : 1l); - } - #else // !Sun && !EMX - void usleep(unsigned long usec); - #endif - #endif // Sun/EMX/Something else + #endif // __EMX__/Unix }; #define HAVE_USLEEP 1 @@ -125,12 +188,12 @@ void wxSleep(int nSecs) sleep(nSecs); } -void wxUsleep(unsigned long milliseconds) +void wxMicroSleep(unsigned long microseconds) { #if defined(HAVE_NANOSLEEP) timespec tmReq; - tmReq.tv_sec = (time_t)(milliseconds / 1000); - tmReq.tv_nsec = (milliseconds % 1000) * 1000 * 1000; + tmReq.tv_sec = (time_t)(microseconds / 1000000); + tmReq.tv_nsec = (microseconds % 1000000) * 1000; // we're not interested in remaining time nor in return value (void)nanosleep(&tmReq, (timespec *)NULL); @@ -143,25 +206,30 @@ void wxUsleep(unsigned long milliseconds) #error "usleep() cannot be used in MT programs under Solaris." #endif // Sun - usleep(milliseconds * 1000); // usleep(3) wants microseconds + usleep(microseconds); #elif defined(HAVE_SLEEP) // under BeOS sleep() takes seconds (what about other platforms, if any?) - sleep(milliseconds * 1000); + sleep(microseconds * 1000000); #else // !sleep function - #error "usleep() or nanosleep() function required for wxUsleep" + #error "usleep() or nanosleep() function required for wxMicroSleep" #endif // sleep function } +void wxMilliSleep(unsigned long milliseconds) +{ + wxMicroSleep(milliseconds*1000); +} + // ---------------------------------------------------------------------------- // process management // ---------------------------------------------------------------------------- -int wxKill(long pid, wxSignal sig, wxKillError *rc) +int wxKill(long pid, wxSignal sig, wxKillError *rc, int flags) { - int err = kill((pid_t)pid, (int)sig); + int err = kill((pid_t) (flags & wxKILL_CHILDREN) ? -pid : pid, (int)sig); if ( rc ) { - switch ( errno ) + switch ( err ? errno : 0 ) { case 0: *rc = wxKILL_OK; @@ -193,21 +261,39 @@ int wxKill(long pid, wxSignal sig, wxKillError *rc) #define WXEXECUTE_NARGS 127 +#if defined(__DARWIN__) +long wxMacExecute(wxChar **argv, + int flags, + wxProcess *process); +#endif + long wxExecute( const wxString& command, int flags, wxProcess *process ) { - wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") ); + wxCHECK_MSG( !command.empty(), 0, wxT("can't exec empty command") ); + + wxLogTrace(wxT("exec"), wxT("Executing \"%s\""), command.c_str()); + +#if wxUSE_THREADS + // fork() doesn't mix well with POSIX threads: on many systems the program + // deadlocks or crashes for some reason. Probably our code is buggy and + // doesn't do something which must be done to allow this to work, but I + // don't know what yet, so for now just warn the user (this is the least we + // can do) about it + wxASSERT_MSG( wxThread::IsMain(), + _T("wxExecute() can be called only from the main thread") ); +#endif // wxUSE_THREADS int argc = 0; wxChar *argv[WXEXECUTE_NARGS]; wxString argument; const wxChar *cptr = command.c_str(); wxChar quotechar = wxT('\0'); // is arg quoted? - bool escaped = FALSE; + bool escaped = false; // split the command line in arguments do { - argument=wxT(""); + argument = wxEmptyString; quotechar = wxT('\0'); // eat leading whitespace: @@ -221,14 +307,14 @@ long wxExecute( const wxString& command, int flags, wxProcess *process ) { if ( *cptr == wxT('\\') && ! escaped ) { - escaped = TRUE; + escaped = true; cptr++; continue; } // all other characters: argument += *cptr++; - escaped = FALSE; + escaped = false; // have we reached the end of the argument? if ( (*cptr == quotechar && ! escaped) @@ -252,8 +338,18 @@ long wxExecute( const wxString& command, int flags, wxProcess *process ) } while(*cptr); argv[argc] = NULL; + long lRc; +#if defined(__DARWIN__) + // wxMacExecute only executes app bundles. + // It returns an error code if the target is not an app bundle, thus falling + // through to the regular wxExecute for non app bundles. + lRc = wxMacExecute(argv, flags, process); + if( lRc != ((flags & wxEXEC_SYNC) ? -1 : 0)) + return lRc; +#endif + // do execute the command - long lRc = wxExecute(argv, flags, process); + lRc = wxExecute(argv, flags, process); // clean up argc = 0; @@ -291,7 +387,7 @@ bool wxShell(const wxString& command) bool wxShell(const wxString& command, wxArrayString& output) { - wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") ); + wxCHECK_MSG( !command.empty(), false, _T("can't exec shell non interactively") ); return wxExecute(wxMakeShellCommand(command), output); } @@ -312,60 +408,22 @@ bool wxShutdown(wxShutdownFlags wFlags) default: wxFAIL_MSG( _T("unknown wxShutdown() flag") ); - return FALSE; + return false; } return system(wxString::Format(_T("init %c"), level).mb_str()) == 0; } - -#if wxUSE_GUI - -void wxHandleProcessTermination(wxEndProcessData *proc_data) -{ - // notify user about termination if required - if ( proc_data->process ) - { - proc_data->process->OnTerminate(proc_data->pid, proc_data->exitcode); - } - - // clean up - if ( proc_data->pid > 0 ) - { - delete proc_data; - } - else - { - // let wxExecute() know that the process has terminated - proc_data->pid = 0; - } -} - -#endif // wxUSE_GUI - // ---------------------------------------------------------------------------- // wxStream classes to support IO redirection in wxExecute // ---------------------------------------------------------------------------- -#if wxUSE_STREAMS - -// ---------------------------------------------------------------------------- -// wxProcessFileInputStream: stream for reading from a pipe -// ---------------------------------------------------------------------------- +#if HAS_PIPE_INPUT_STREAM -class wxProcessFileInputStream : public wxFileInputStream -{ -public: - wxProcessFileInputStream(int fd) : wxFileInputStream(fd) { } - - // return TRUE if we have anything to read, don't block - bool IsAvailable() const; -}; - -bool wxProcessFileInputStream::IsAvailable() const +bool wxPipeInputStream::CanRead() const { if ( m_lasterror == wxSTREAM_EOF ) - return TRUE; + return false; // check if there is any input available struct timeval tv; @@ -375,8 +433,10 @@ bool wxProcessFileInputStream::IsAvailable() const const int fd = m_file->fd(); fd_set readfds; - FD_ZERO(&readfds); - FD_SET(fd, &readfds); + + wxFD_ZERO(&readfds); + wxFD_SET(fd, &readfds); + switch ( select(fd + 1, &readfds, NULL, NULL, &tv) ) { case -1: @@ -384,211 +444,27 @@ bool wxProcessFileInputStream::IsAvailable() const // fall through case 0: - return TRUE; + return false; default: wxFAIL_MSG(_T("unexpected select() return value")); // still fall through case 1: - // input available - return TRUE; + // input available -- or maybe not, as select() returns 1 when a + // read() will complete without delay, but it could still not read + // anything + return !Eof(); } } -// ---------------------------------------------------------------------------- -// wxStreamTempInputBuffer -// ---------------------------------------------------------------------------- - -/* - Extract of a mail to wx-users to give the context of the problem we are - trying to solve here: - - MC> If I run the command: - MC> find . -name "*.h" -exec grep linux {} \; - MC> in the exec sample synchronously from the 'Capture command output' - MC> menu, wxExecute never returns. I have to xkill it. Has anyone - MC> else encountered this? - - Yes, I can reproduce it too. - - I even think I understand why it happens: before launching the external - command we set up a pipe with a valid file descriptor on the reading side - when the output is redirected. So the subprocess happily writes to it ... - until the pipe buffer (which is usually quite big on Unix, I think the - default is 4Kb) is full. Then the writing process stops and waits until we - read some data from the pipe to be able to continue writing to it but we - never do it because we wait until it terminates to start reading and so we - have a classical deadlock. - - Here is the fix: we now read the output as soon as it appears into a temp - buffer (wxStreamTempInputBuffer object) and later just stuff it back into the - stream when the process terminates. See supporting code in wxExecute() - itself as well. - - Note that this is horribly inefficient for large amounts of output (count - the number of times we copy the data around) and so a better API is badly - needed! -*/ - -class wxStreamTempInputBuffer -{ -public: - wxStreamTempInputBuffer(); - - // call to associate a stream with this buffer, otherwise nothing happens - // at all - void Init(wxProcessFileInputStream *stream); - - // check for input on our stream and cache it in our buffer if any - void Update(); - - ~wxStreamTempInputBuffer(); - -private: - // the stream we're buffering, if NULL we don't do anything at all - wxProcessFileInputStream *m_stream; - - // the buffer of size m_size (NULL if m_size == 0) - void *m_buffer; - - // the size of the buffer - size_t m_size; -}; - -wxStreamTempInputBuffer::wxStreamTempInputBuffer() -{ - m_stream = NULL; - m_buffer = NULL; - m_size = 0; -} - -void wxStreamTempInputBuffer::Init(wxProcessFileInputStream *stream) -{ - m_stream = stream; -} - -void wxStreamTempInputBuffer::Update() -{ - if ( m_stream && m_stream->IsAvailable() ) - { - // realloc in blocks of 4Kb: this is the default (and minimal) buffer - // size of the Unix pipes so it should be the optimal step - static const size_t incSize = 4096; - - void *buf = realloc(m_buffer, m_size + incSize); - if ( !buf ) - { - // don't read any more, we don't have enough memory to do it - m_stream = NULL; - } - else // got memory for the buffer - { - m_buffer = buf; - m_stream->Read((char *)m_buffer + m_size, incSize); - m_size += m_stream->LastRead(); - } - } -} - -wxStreamTempInputBuffer::~wxStreamTempInputBuffer() -{ - if ( m_buffer ) - { - m_stream->Ungetch(m_buffer, m_size); - free(m_buffer); - } -} - -#endif // wxUSE_STREAMS - -// ---------------------------------------------------------------------------- -// wxPipe: this encapsulates pipe() system call -// ---------------------------------------------------------------------------- - -class wxPipe -{ -public: - // the symbolic names for the pipe ends - enum Direction - { - Read, - Write - }; - - enum - { - INVALID_FD = -1 - }; - - // default ctor doesn't do anything - wxPipe() { m_fds[Read] = m_fds[Write] = INVALID_FD; } - - // create the pipe, return TRUE if ok, FALSE on error - bool Create() - { - if ( pipe(m_fds) == -1 ) - { - wxLogSysError(_("Pipe creation failed")); - - return FALSE; - } - - return TRUE; - } - - // return TRUE if we were created successfully - bool IsOk() const { return m_fds[Read] != INVALID_FD; } - - // return the descriptor for one of the pipe ends - int operator[](Direction which) const - { - wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_fds), - _T("invalid pipe index") ); - - return m_fds[which]; - } - - // detach a descriptor, meaning that the pipe dtor won't close it, and - // return it - int Detach(Direction which) - { - wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_fds), - _T("invalid pipe index") ); - - int fd = m_fds[which]; - m_fds[which] = INVALID_FD; - - return fd; - } - - // close the pipe descriptors - void Close() - { - for ( size_t n = 0; n < WXSIZEOF(m_fds); n++ ) - { - if ( m_fds[n] != INVALID_FD ) - close(m_fds[n]); - } - } - - // dtor closes the pipe descriptors - ~wxPipe() { Close(); } - -private: - int m_fds[2]; -}; +#endif // HAS_PIPE_INPUT_STREAM // ---------------------------------------------------------------------------- // wxExecute: the real worker function // ---------------------------------------------------------------------------- -#ifdef __VMS -#pragma message disable codeunreachable -#endif -long wxExecute(wxChar **argv, - int flags, - wxProcess *process) +long wxExecute(wxChar **argv, int flags, wxProcess *process) { // for the sync execution, we return -1 to indicate failure, but for async // case we return 0 which is never a valid PID @@ -605,7 +481,7 @@ long wxExecute(wxChar **argv, while (argv[mb_argc]) { - wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]); + wxWX2MBbuf mb_arg = wxSafeConvertWX2MB(argv[mb_argc]); mb_argv[mb_argc] = strdup(mb_arg); mb_argc++; } @@ -622,10 +498,21 @@ long wxExecute(wxChar **argv, wxChar **mb_argv = argv; #endif // Unicode/ANSI -#if wxUSE_GUI + // we want this function to work even if there is no wxApp so ensure that + // we have a valid traits pointer + wxConsoleAppTraits traitsConsole; + wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; + if ( !traits ) + traits = &traitsConsole; + + // this struct contains all information which we pass to and from + // wxAppTraits methods + wxExecuteData execData; + execData.flags = flags; + execData.process = process; + // create pipes - wxPipe pipeEndProcDetect; - if ( !pipeEndProcDetect.Create() ) + if ( !traits->CreateEndProcessPipe(execData) ) { wxLogError( _("Failed to execute '%s'\n"), *argv ); @@ -633,7 +520,6 @@ long wxExecute(wxChar **argv, return ERROR_RETURN_CODE; } -#endif // wxUSE_GUI // pipes for inter process communication wxPipe pipeIn, // stdin @@ -653,13 +539,17 @@ long wxExecute(wxChar **argv, } // fork the process -#ifdef HAVE_VFORK - pid_t pid = vfork(); + // + // NB: do *not* use vfork() here, it completely breaks this code for some + // reason under Solaris (and maybe others, although not under Linux) + // But on OpenVMS we do not have fork so we have to use vfork and + // cross our fingers that it works. +#ifdef __VMS + pid_t pid = vfork(); #else - pid_t pid = fork(); + pid_t pid = fork(); #endif - - if ( pid == -1 ) // error? + if ( pid == -1 ) // error? { wxLogSysError( _("Fork failed") ); @@ -675,15 +565,14 @@ long wxExecute(wxChar **argv, // start an xterm executing it. if ( !(flags & wxEXEC_SYNC) ) { - for ( int fd = 0; fd < FD_SETSIZE; fd++ ) + // FD_SETSIZE is unsigned under BSD, signed under other platforms + // so we need a cast to avoid warnings on all platforms + for ( int fd = 0; fd < (int)FD_SETSIZE; fd++ ) { if ( fd == pipeIn[wxPipe::Read] || fd == pipeOut[wxPipe::Write] || fd == pipeErr[wxPipe::Write] -#if wxUSE_GUI - || fd == pipeEndProcDetect[wxPipe::Write] -#endif // wxUSE_GUI - ) + || traits->IsWriteFDOfEndProcessPipe(execData, fd) ) { // don't close this one, we still need it continue; @@ -695,7 +584,7 @@ long wxExecute(wxChar **argv, } } -#ifndef __VMS +#if !defined(__VMS) && !defined(__EMX__) if ( flags & wxEXEC_MAKE_GROUP_LEADER ) { // Set process group to child process' pid. Then killing -pid @@ -704,12 +593,9 @@ long wxExecute(wxChar **argv, } #endif // !__VMS -#if wxUSE_GUI // reading side can be safely closed but we should keep the write one // opened - pipeEndProcDetect.Detach(wxPipe::Write); - pipeEndProcDetect.Close(); -#endif // wxUSE_GUI + traits->DetachWriteFDOfEndProcessPipe(execData); // redirect stdin, stdout and stderr if ( pipeIn.IsOk() ) @@ -728,6 +614,12 @@ long wxExecute(wxChar **argv, execvp (*mb_argv, mb_argv); + fprintf(stderr, "execvp("); + // CS changed ppc to ppc_ as ppc is not available under mac os CW Mach-O + for ( char **ppc_ = mb_argv; *ppc_; ppc_++ ) + fprintf(stderr, "%s%s", ppc_ == mb_argv ? "" : ", ", *ppc_); + fprintf(stderr, ") failed with error %d!\n", errno); + // there is no return after successful exec() _exit(-1); @@ -745,32 +637,38 @@ long wxExecute(wxChar **argv, { ARGS_CLEANUP; + // save it for WaitForChild() use + execData.pid = pid; + // prepare for IO redirection -#if wxUSE_STREAMS +#if HAS_PIPE_INPUT_STREAM // the input buffer bufOut is connected to stdout, this is why it is // called bufOut and not bufIn wxStreamTempInputBuffer bufOut, bufErr; -#endif // wxUSE_STREAMS +#endif // HAS_PIPE_INPUT_STREAM if ( process && process->IsRedirected() ) { -#if wxUSE_STREAMS +#if HAS_PIPE_INPUT_STREAM wxOutputStream *inStream = new wxFileOutputStream(pipeIn.Detach(wxPipe::Write)); - wxProcessFileInputStream *outStream = - new wxProcessFileInputStream(pipeOut.Detach(wxPipe::Read)); + wxPipeInputStream *outStream = + new wxPipeInputStream(pipeOut.Detach(wxPipe::Read)); - wxProcessFileInputStream *errStream = - new wxProcessFileInputStream(pipeErr.Detach(wxPipe::Read)); + wxPipeInputStream *errStream = + new wxPipeInputStream(pipeErr.Detach(wxPipe::Read)); process->SetPipeStreams(outStream, inStream, errStream); bufOut.Init(outStream); bufErr.Init(errStream); -#endif // wxUSE_STREAMS + + execData.bufOut = &bufOut; + execData.bufErr = &bufErr; +#endif // HAS_PIPE_INPUT_STREAM } if ( pipeIn.IsOk() ) @@ -780,79 +678,13 @@ long wxExecute(wxChar **argv, pipeErr.Close(); } -#if wxUSE_GUI && !defined(__WXMICROWIN__) - wxEndProcessData *data = new wxEndProcessData; - - data->tag = wxAddProcessCallback - ( - data, - pipeEndProcDetect.Detach(wxPipe::Read) - ); - - pipeEndProcDetect.Close(); - - if ( flags & wxEXEC_SYNC ) - { - // we may have process for capturing the program output, but it's - // not used in wxEndProcessData in the case of sync execution - data->process = NULL; - - // sync execution: indicate it by negating the pid - data->pid = -pid; - - wxBusyCursor bc; - wxWindowDisabler wd; - - // data->pid will be set to 0 from GTK_EndProcessDetector when the - // process terminates - while ( data->pid != 0 ) - { -#if wxUSE_STREAMS - bufOut.Update(); - bufErr.Update(); -#endif // wxUSE_STREAMS - - // give GTK+ a chance to call GTK_EndProcessDetector here and - // also repaint the GUI - wxYield(); - } - - int exitcode = data->exitcode; - - delete data; - - return exitcode; - } - else // async execution - { - // async execution, nothing special to do - caller will be - // notified about the process termination if process != NULL, data - // will be deleted in GTK_EndProcessDetector - data->process = process; - data->pid = pid; - - return pid; - } -#else // !wxUSE_GUI - - wxASSERT_MSG( flags & wxEXEC_SYNC, - wxT("async execution not supported yet") ); - - int exitcode = 0; - if ( waitpid(pid, &exitcode, 0) == -1 || !WIFEXITED(exitcode) ) - { - wxLogSysError(_("Waiting for subprocess termination failed")); - } - - return exitcode; -#endif // wxUSE_GUI + return traits->WaitForChild(execData); } +#if !defined(__VMS) && !defined(__INTEL_COMPILER) return ERROR_RETURN_CODE; -} -#ifdef __VMS -#pragma message enable codeunreachable #endif +} #undef ERROR_RETURN_CODE #undef ARGS_CLEANUP @@ -863,23 +695,19 @@ long wxExecute(wxChar **argv, const wxChar* wxGetHomeDir( wxString *home ) { - *home = wxGetUserHome( wxString() ); - wxString tmp; - if ( home->IsEmpty() ) + *home = wxGetUserHome(); + wxString tmp; + if ( home->empty() ) *home = wxT("/"); #ifdef __VMS - tmp = *home; - if ( tmp.Last() != wxT(']')) - if ( tmp.Last() != wxT('/')) *home << wxT('/'); + tmp = *home; + if ( tmp.Last() != wxT(']')) + if ( tmp.Last() != wxT('/')) *home << wxT('/'); #endif return home->c_str(); } -#if wxUSE_UNICODE -const wxMB2WXbuf wxGetUserHome( const wxString &user ) -#else // just for binary compatibility -- there is no 'const' here -char *wxGetUserHome( const wxString &user ) -#endif +wxString wxGetUserHome( const wxString &user ) { struct passwd *who = (struct passwd *) NULL; @@ -891,13 +719,15 @@ char *wxGetUserHome( const wxString &user ) { return ptr; } - if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL) + + if ((ptr = wxGetenv(wxT("USER"))) != NULL || + (ptr = wxGetenv(wxT("LOGNAME"))) != NULL) { - who = getpwnam(wxConvertWX2MB(ptr)); + who = getpwnam(wxSafeConvertWX2MB(ptr)); } - // We now make sure the the user exists! - if (who == NULL) + // make sure the user exists! + if ( !who ) { who = getpwuid(getuid()); } @@ -907,19 +737,48 @@ char *wxGetUserHome( const wxString &user ) who = getpwnam (user.mb_str()); } - return wxConvertMB2WX(who ? who->pw_dir : 0); + return wxSafeConvertMB2WX(who ? who->pw_dir : 0); } // ---------------------------------------------------------------------------- // network and user id routines // ---------------------------------------------------------------------------- +// private utility function which returns output of the given command, removing +// the trailing newline +static wxString wxGetCommandOutput(const wxString &cmd) +{ + FILE *f = popen(cmd.ToAscii(), "r"); + if ( !f ) + { + wxLogSysError(_T("Executing \"%s\" failed"), cmd.c_str()); + return wxEmptyString; + } + + wxString s; + char buf[256]; + while ( !feof(f) ) + { + if ( !fgets(buf, sizeof(buf), f) ) + break; + + s += wxString::FromAscii(buf); + } + + pclose(f); + + if ( !s.empty() && s.Last() == _T('\n') ) + s.RemoveLast(); + + return s; +} + // retrieve either the hostname or FQDN depending on platform (caller must // check whether it's one or the other, this is why this function is for // private use only) static bool wxGetHostNameInternal(wxChar *buf, int sz) { - wxCHECK_MSG( buf, FALSE, wxT("NULL pointer in wxGetHostNameInternal") ); + wxCHECK_MSG( buf, false, wxT("NULL pointer in wxGetHostNameInternal") ); *buf = wxT('\0'); @@ -929,15 +788,21 @@ static bool wxGetHostNameInternal(wxChar *buf, int sz) bool ok = uname(&uts) != -1; if ( ok ) { - wxStrncpy(buf, wxConvertMB2WX(uts.nodename), sz - 1); + wxStrncpy(buf, wxSafeConvertMB2WX(uts.nodename), sz - 1); buf[sz] = wxT('\0'); } #elif defined(HAVE_GETHOSTNAME) - bool ok = gethostname(buf, sz) != -1; + char cbuf[sz]; + bool ok = gethostname(cbuf, sz) != -1; + if ( ok ) + { + wxStrncpy(buf, wxSafeConvertMB2WX(cbuf), sz - 1); + buf[sz] = wxT('\0'); + } #else // no uname, no gethostname wxFAIL_MSG(wxT("don't know host name for this machine")); - bool ok = FALSE; + bool ok = false; #endif // uname/gethostname if ( !ok ) @@ -975,17 +840,17 @@ bool wxGetFullHostName(wxChar *buf, int sz) { if ( !wxStrchr(buf, wxT('.')) ) { - struct hostent *host = gethostbyname(wxConvertWX2MB(buf)); + struct hostent *host = gethostbyname(wxSafeConvertWX2MB(buf)); if ( !host ) { wxLogSysError(_("Cannot get the official hostname")); - ok = FALSE; + ok = false; } else { // the canonical name - wxStrncpy(buf, wxConvertMB2WX(host->h_name), sz); + wxStrncpy(buf, wxSafeConvertMB2WX(host->h_name), sz); } } //else: it's already a FQDN (BSD behaves this way) @@ -1001,77 +866,89 @@ bool wxGetUserId(wxChar *buf, int sz) *buf = wxT('\0'); if ((who = getpwuid(getuid ())) != NULL) { - wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1); - return TRUE; + wxStrncpy (buf, wxSafeConvertMB2WX(who->pw_name), sz - 1); + return true; } - return FALSE; + return false; } bool wxGetUserName(wxChar *buf, int sz) { +#ifdef HAVE_PW_GECOS struct passwd *who; *buf = wxT('\0'); if ((who = getpwuid (getuid ())) != NULL) { - // pw_gecos field in struct passwd is not standard -#ifdef HAVE_PW_GECOS char *comma = strchr(who->pw_gecos, ','); if (comma) *comma = '\0'; // cut off non-name comment fields - wxStrncpy (buf, wxConvertMB2WX(who->pw_gecos), sz - 1); -#else // !HAVE_PW_GECOS - wxStrncpy (buf, wxConvertMB2WX(who->pw_name), sz - 1); -#endif // HAVE_PW_GECOS/!HAVE_PW_GECOS - return TRUE; + wxStrncpy (buf, wxSafeConvertMB2WX(who->pw_gecos), sz - 1); + return true; } - return FALSE; + return false; +#else // !HAVE_PW_GECOS + return wxGetUserId(buf, sz); +#endif // HAVE_PW_GECOS/!HAVE_PW_GECOS } -#ifndef __WXMAC__ -wxString wxGetOsDescription() +bool wxIsPlatform64Bit() { -#ifndef WXWIN_OS_DESCRIPTION - #error WXWIN_OS_DESCRIPTION should be defined in config.h by configure -#else - return WXWIN_OS_DESCRIPTION; -#endif + const wxString machine = wxGetCommandOutput(wxT("uname -m")); + + // the test for "64" is obviously not 100% reliable but seems to work fine + // in practice + return machine.Contains(wxT("64")) || + machine.Contains(wxT("alpha")); } -#endif -// this function returns the GUI toolkit version in GUI programs, but OS -// version in non-GUI ones -#if !wxUSE_GUI +// these functions are in mac/utils.cpp for wxMac +#ifndef __WXMAC__ -int wxGetOsVersion(int *majorVsn, int *minorVsn) +wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin) { + // get OS version int major, minor; - char name[256]; - - if ( sscanf(WXWIN_OS_DESCRIPTION, "%s %d.%d", name, &major, &minor) != 3 ) + wxString release = wxGetCommandOutput(wxT("uname -r")); + if ( release.empty() || + wxSscanf(release.c_str(), wxT("%d.%d"), &major, &minor) != 2 ) { - // unreckognized uname string format - major = minor = -1; + // failed to get version string or unrecognized format + major = + minor = -1; } - if ( majorVsn ) - *majorVsn = major; - if ( minorVsn ) - *minorVsn = minor; + if ( verMaj ) + *verMaj = major; + if ( verMin ) + *verMin = minor; + + // try to understand which OS are we running + wxString kernel = wxGetCommandOutput(wxT("uname -s")); + if ( kernel.empty() ) + kernel = wxGetCommandOutput(wxT("uname -o")); - return wxUNIX; + if ( kernel.empty() ) + return wxOS_UNKNOWN; + + return wxPlatformInfo::GetOperatingSystemId(kernel); } -#endif // !wxUSE_GUI +wxString wxGetOsDescription() +{ + return wxGetCommandOutput(wxT("uname -s -r -m")); +} + +#endif // !__WXMAC__ unsigned long wxGetProcessId() { return (unsigned long)getpid(); } -long wxGetFreeMemory() +wxMemorySize wxGetFreeMemory() { #if defined(__LINUX__) // get it from /proc/meminfo @@ -1083,16 +960,43 @@ long wxGetFreeMemory() char buf[1024]; if ( fgets(buf, WXSIZEOF(buf), fp) && fgets(buf, WXSIZEOF(buf), fp) ) { - long memTotal, memUsed; - sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree); + // /proc/meminfo changed its format in kernel 2.6 + if ( wxPlatformInfo().CheckOSVersion(2, 6) ) + { + unsigned long cached, buffers; + sscanf(buf, "MemFree: %ld", &memFree); + + fgets(buf, WXSIZEOF(buf), fp); + sscanf(buf, "Buffers: %lu", &buffers); + + fgets(buf, WXSIZEOF(buf), fp); + sscanf(buf, "Cached: %lu", &cached); + + // add to "MemFree" also the "Buffers" and "Cached" values as + // free(1) does as otherwise the value never makes sense: for + // kernel 2.6 it's always almost 0 + memFree += buffers + cached; + + // values here are always expressed in kB and we want bytes + memFree *= 1024; + } + else // Linux 2.4 (or < 2.6, anyhow) + { + long memTotal, memUsed; + sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree); + } } fclose(fp); - return memFree; + return (wxMemorySize)memFree; } -#elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES) - return sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE); +#elif defined(__SGI__) + struct rminfo realmem; + if ( sysmp(MP_SAGET, MPSA_RMINFO, &realmem, sizeof realmem) == 0 ) + return ((wxMemorySize)realmem.physmem * sysconf(_SC_PAGESIZE)); +#elif defined(_SC_AVPHYS_PAGES) + return ((wxMemorySize)sysconf(_SC_AVPHYS_PAGES))*sysconf(_SC_PAGESIZE); //#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably #endif @@ -1100,39 +1004,39 @@ long wxGetFreeMemory() return -1; } -bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree) +bool wxGetDiskSpace(const wxString& path, wxDiskspaceSize_t *pTotal, wxDiskspaceSize_t *pFree) { #if defined(HAVE_STATFS) || defined(HAVE_STATVFS) // the case to "char *" is needed for AIX 4.3 - wxStatFs fs; - if ( statfs((char *)path.fn_str(), &fs) != 0 ) + wxStatfs_t fs; + if ( wxStatfs((char *)(const char*)path.fn_str(), &fs) != 0 ) { - wxLogSysError("Failed to get file system statistics"); + wxLogSysError( wxT("Failed to get file system statistics") ); - return FALSE; + return false; } // under Solaris we also have to use f_frsize field instead of f_bsize // which is in general a multiple of f_frsize #ifdef HAVE_STATVFS - wxLongLong blockSize = fs.f_frsize; + wxDiskspaceSize_t blockSize = fs.f_frsize; #else // HAVE_STATFS - wxLongLong blockSize = fs.f_bsize; + wxDiskspaceSize_t blockSize = fs.f_bsize; #endif // HAVE_STATVFS/HAVE_STATFS if ( pTotal ) { - *pTotal = wxLongLong(fs.f_blocks) * blockSize; + *pTotal = wxDiskspaceSize_t(fs.f_blocks) * blockSize; } if ( pFree ) { - *pFree = wxLongLong(fs.f_bavail) * blockSize; + *pFree = wxDiskspaceSize_t(fs.f_bavail) * blockSize; } - return TRUE; + return true; #else // !HAVE_STATFS && !HAVE_STATVFS - return FALSE; + return false; #endif // HAVE_STATFS } @@ -1140,46 +1044,105 @@ bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree) // env vars // ---------------------------------------------------------------------------- +#if USE_PUTENV + +WX_DECLARE_STRING_HASH_MAP(char *, wxEnvVars); + +static wxEnvVars gs_envVars; + +class wxSetEnvModule : public wxModule +{ +public: + virtual bool OnInit() { return true; } + virtual void OnExit() + { + for ( wxEnvVars::const_iterator i = gs_envVars.begin(); + i != gs_envVars.end(); + ++i ) + { + free(i->second); + } + + gs_envVars.clear(); + } + + DECLARE_DYNAMIC_CLASS(wxSetEnvModule) +}; + +IMPLEMENT_DYNAMIC_CLASS(wxSetEnvModule, wxModule) + +#endif // USE_PUTENV + bool wxGetEnv(const wxString& var, wxString *value) { // wxGetenv is defined as getenv() - wxChar *p = wxGetenv(var); + char *p = wxGetenv(var); if ( !p ) - return FALSE; + return false; if ( value ) { *value = p; } - return TRUE; + return true; } -bool wxSetEnv(const wxString& variable, const wxChar *value) +static bool wxDoSetEnv(const wxString& variable, const char *value) { #if defined(HAVE_SETENV) - return setenv(variable.mb_str(), - value ? (const char *)wxString(value).mb_str() - : NULL, - 1 /* overwrite */) == 0; + if ( !value ) + { +#ifdef HAVE_UNSETENV + // don't test unsetenv() return value: it's void on some systems (at + // least Darwin) + unsetenv(variable.mb_str()); + return true; +#else + value = ""; // we can't pass NULL to setenv() +#endif + } + + return setenv(variable.mb_str(), value, 1 /* overwrite */) == 0; #elif defined(HAVE_PUTENV) wxString s = variable; if ( value ) s << _T('=') << value; // transform to ANSI - const char *p = s.mb_str(); + const wxWX2MBbuf p = s.mb_str(); - // the string will be free()d by libc char *buf = (char *)malloc(strlen(p) + 1); strcpy(buf, p); + // store the string to free() it later + wxEnvVars::iterator i = gs_envVars.find(variable); + if ( i != gs_envVars.end() ) + { + free(i->second); + i->second = buf; + } + else // this variable hadn't been set before + { + gs_envVars[variable] = buf; + } + return putenv(buf) == 0; #else // no way to set an env var - return FALSE; + return false; #endif } +bool wxSetEnv(const wxString& variable, const wxString& value) +{ + return wxDoSetEnv(variable, value.mb_str()); +} + +bool wxUnsetEnv(const wxString& variable) +{ + return wxDoSetEnv(variable, NULL); +} + // ---------------------------------------------------------------------------- // signal handling // ---------------------------------------------------------------------------- @@ -1202,13 +1165,13 @@ extern "C" void wxFatalSignalHandler(wxTYPE_SA_HANDLER) bool wxHandleFatalExceptions(bool doit) { // old sig handlers - static bool s_savedHandlers = FALSE; + static bool s_savedHandlers = false; static struct sigaction s_handlerFPE, s_handlerILL, s_handlerBUS, s_handlerSEGV; - bool ok = TRUE; + bool ok = true; if ( doit && !s_savedHandlers ) { // install the signal handler @@ -1230,7 +1193,7 @@ bool wxHandleFatalExceptions(bool doit) wxLogDebug(_T("Failed to install our signal handler.")); } - s_savedHandlers = TRUE; + s_savedHandlers = true; } else if ( s_savedHandlers ) { @@ -1244,7 +1207,7 @@ bool wxHandleFatalExceptions(bool doit) wxLogDebug(_T("Failed to uninstall our signal handler.")); } - s_savedHandlers = FALSE; + s_savedHandlers = false; } //else: nothing to do @@ -1253,37 +1216,247 @@ bool wxHandleFatalExceptions(bool doit) #endif // wxUSE_ON_FATAL_EXCEPTION +#endif // wxUSE_BASE + +#if wxUSE_GUI + +#ifdef __DARWIN__ + #include +#endif // ---------------------------------------------------------------------------- -// error and debug output routines (deprecated, use wxLog) +// wxExecute support // ---------------------------------------------------------------------------- -#if WXWIN_COMPATIBILITY_2_2 +/* + NOTE: If this proves not to work well for wxMac then move back to the old + behavior. If, however, it proves to work just fine, nuke all of the code + for the old behavior. I strongly suggest backporting this to 2.8 as well. + However, beware that while you can nuke the old code here, you cannot + nuke the wxAddProcessCallbackForPid from the 2.8 branch (found in + utilsexc_cf since it's an exported symbol). + */ +// #define USE_OLD_DARWIN_END_PROCESS_DETECT (defined(__DARWIN__) && defined(__WXMAC__)) +#define USE_OLD_DARWIN_END_PROCESS_DETECT 0 + +// wxMac/wxCocoa don't use the same process end detection mechanisms so we don't +// need wxExecute-related helpers for them +#if !USE_OLD_DARWIN_END_PROCESS_DETECT + +bool wxGUIAppTraits::CreateEndProcessPipe(wxExecuteData& execData) +{ + return execData.pipeEndProcDetect.Create(); +} + +bool wxGUIAppTraits::IsWriteFDOfEndProcessPipe(wxExecuteData& execData, int fd) +{ + return fd == (execData.pipeEndProcDetect)[wxPipe::Write]; +} -void wxDebugMsg( const char *format, ... ) +void wxGUIAppTraits::DetachWriteFDOfEndProcessPipe(wxExecuteData& execData) { - va_list ap; - va_start( ap, format ); - vfprintf( stderr, format, ap ); - fflush( stderr ); - va_end(ap); + execData.pipeEndProcDetect.Detach(wxPipe::Write); + execData.pipeEndProcDetect.Close(); } -void wxError( const wxString &msg, const wxString &title ) +#else // !Darwin + +bool wxGUIAppTraits::CreateEndProcessPipe(wxExecuteData& WXUNUSED(execData)) +{ + return true; +} + +bool +wxGUIAppTraits::IsWriteFDOfEndProcessPipe(wxExecuteData& WXUNUSED(execData), + int WXUNUSED(fd)) { - wxFprintf( stderr, _("Error ") ); - if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) ); - if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) ); - wxFprintf( stderr, wxT(".\n") ); + return false; } -void wxFatalError( const wxString &msg, const wxString &title ) +void +wxGUIAppTraits::DetachWriteFDOfEndProcessPipe(wxExecuteData& WXUNUSED(execData)) { - wxFprintf( stderr, _("Error ") ); - if (!title.IsNull()) wxFprintf( stderr, wxT("%s "), WXSTRINGCAST(title) ); - if (!msg.IsNull()) wxFprintf( stderr, wxT(": %s"), WXSTRINGCAST(msg) ); - wxFprintf( stderr, wxT(".\n") ); - exit(3); // the same exit code as for abort() + // nothing to do here, we don't use the pipe } -#endif // WXWIN_COMPATIBILITY_2_2 +#endif // !Darwin/Darwin + +int wxGUIAppTraits::WaitForChild(wxExecuteData& execData) +{ + wxEndProcessData *endProcData = new wxEndProcessData; + + const int flags = execData.flags; + + // wxAddProcessCallback is now (with DARWIN) allowed to call the + // callback function directly if the process terminates before + // the callback can be added to the run loop. Set up the endProcData. + if ( flags & wxEXEC_SYNC ) + { + // we may have process for capturing the program output, but it's + // not used in wxEndProcessData in the case of sync execution + endProcData->process = NULL; + + // sync execution: indicate it by negating the pid + endProcData->pid = -execData.pid; + } + else + { + // async execution, nothing special to do -- caller will be + // notified about the process termination if process != NULL, endProcData + // will be deleted in GTK_EndProcessDetector + endProcData->process = execData.process; + endProcData->pid = execData.pid; + } + + + if ( !(flags & wxEXEC_NOEVENTS) ) + { +#if USE_OLD_DARWIN_END_PROCESS_DETECT + endProcData->tag = wxAddProcessCallbackForPid(endProcData, execData.pid); +#else + endProcData->tag = wxAddProcessCallback + ( + endProcData, + execData.pipeEndProcDetect.Detach(wxPipe::Read) + ); + + execData.pipeEndProcDetect.Close(); +#endif // USE_OLD_DARWIN_END_PROCESS_DETECT + } + + if ( flags & wxEXEC_SYNC ) + { + wxBusyCursor bc; + int exitcode = 0; + + wxWindowDisabler *wd = flags & (wxEXEC_NODISABLE | wxEXEC_NOEVENTS) + ? NULL + : new wxWindowDisabler; + + if ( flags & wxEXEC_NOEVENTS ) + { + // just block waiting for the child to exit + int status = 0; + + int result = waitpid(execData.pid, &status, 0); +#ifdef __DARWIN__ + /* DE: waitpid manpage states that waitpid can fail with EINTR + if the call is interrupted by a caught signal. I suppose + that means that this ought to be a while loop. + + The odd thing is that it seems to fail EVERY time. It fails + with a quickly exiting process (e.g. echo), and fails with a + slowly exiting process (e.g. sleep 2) but clearly after + having waited for the child to exit. Maybe it's a bug in + my particular version. + + It works, however, from the CFSocket callback without this + trick but in that case it's used only after CFSocket calls + the callback and with the WNOHANG flag which would seem to + preclude it from being interrupted or at least make it much + less likely since it would not then be waiting. + + If Darwin's man page is to be believed then this is definitely + necessary. It's just weird that I've never seen it before + and apparently no one else has either or you'd think they'd + have reported it by now. Perhaps blocking the GUI while + waiting for a child process to exit is simply not that common. + */ + if(result == -1 && errno == EINTR) + { + result = waitpid(execData.pid, &status, 0); + } + +#endif + + if ( result == -1 ) + { + wxLogLastError(_T("waitpid")); + exitcode = -1; + } + else + { + wxASSERT_MSG( result == execData.pid, + _T("unexpected waitpid() return value") ); + + if ( WIFEXITED(status) ) + { + exitcode = WEXITSTATUS(status); + } + else // abnormal termination? + { + wxASSERT_MSG( WIFSIGNALED(status), + _T("unexpected child wait status") ); + exitcode = -1; + } + } + } + else // !wxEXEC_NOEVENTS + { + // endProcData->pid will be set to 0 from GTK_EndProcessDetector when the + // process terminates + while ( endProcData->pid != 0 ) + { + bool idle = true; + +#if HAS_PIPE_INPUT_STREAM + if ( execData.bufOut ) + { + execData.bufOut->Update(); + idle = false; + } + + if ( execData.bufErr ) + { + execData.bufErr->Update(); + idle = false; + } +#endif // HAS_PIPE_INPUT_STREAM + + // don't consume 100% of the CPU while we're sitting in this + // loop + if ( idle ) + wxMilliSleep(1); + + // give GTK+ a chance to call GTK_EndProcessDetector here and + // also repaint the GUI + wxYield(); + } + + exitcode = endProcData->exitcode; + } + + delete wd; + delete endProcData; + + return exitcode; + } + else // async execution + { + return execData.pid; + } +} + +#endif // wxUSE_GUI +#if wxUSE_BASE + +void wxHandleProcessTermination(wxEndProcessData *proc_data) +{ + // notify user about termination if required + if ( proc_data->process ) + { + proc_data->process->OnTerminate(proc_data->pid, proc_data->exitcode); + } + + // clean up + if ( proc_data->pid > 0 ) + { + delete proc_data; + } + else + { + // let wxExecute() know that the process has terminated + proc_data->pid = 0; + } +} +#endif // wxUSE_BASE