/////////////////////////////////////////////////////////////////////////////
-// Name: utilsunx.cpp
+// Name: unix/utilsunx.cpp
// Purpose: generic Unix implementation of many wx functions
// Author: Vadim Zeitlin
// Id: $Id$
#include "wx/intl.h"
#include "wx/log.h"
+#include "wx/app.h"
#include "wx/utils.h"
#include "wx/process.h"
#include "wx/thread.h"
+#include "wx/wfstream.h"
+
+#ifdef HAVE_STATFS
+# ifdef __BSD__
+# include <sys/param.h>
+# include <sys/mount.h>
+# else
+# include <sys/vfs.h>
+# 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 <sys/statvfs.h>
+
+ #define statfs statvfs
+# ifdef __HPUX__
+ #define wxStatFs struct statvfs
+# else
+ #define wxStatFs statvfs_t
+# endif
+#elif HAVE_STATFS
+ #define wxStatFs struct statfs
+#endif // HAVE_STAT[V]FS
+
#if wxUSE_GUI
#include "wx/unix/execute.h"
#endif
+// SGI signal.h defines signal handler arguments differently depending on
+// whether _LANGUAGE_C_PLUS_PLUS is set or not - do set it
+#if defined(__SGI__) && !defined(_LANGUAGE_C_PLUS_PLUS)
+ #define _LANGUAGE_C_PLUS_PLUS 1
+#endif // SGI hack
+
#include <stdarg.h>
#include <dirent.h>
#include <string.h>
// process management
// ----------------------------------------------------------------------------
-int wxKill(long pid, wxSignal sig)
+int wxKill(long pid, wxSignal sig, wxKillError *rc)
{
- return kill((pid_t)pid, (int)sig);
+ int err = kill((pid_t)pid, (int)sig);
+ if ( rc )
+ {
+ switch ( errno )
+ {
+ case 0:
+ *rc = wxKILL_OK;
+ break;
+
+ case EINVAL:
+ *rc = wxKILL_BAD_SIGNAL;
+ break;
+
+ case EPERM:
+ *rc = wxKILL_ACCESS_DENIED;
+ break;
+
+ case ESRCH:
+ *rc = wxKILL_NO_PROCESS;
+ break;
+
+ default:
+ // this goes against Unix98 docs so log it
+ wxLogDebug(_T("unexpected kill(2) return value %d"), err);
+
+ // something else...
+ *rc = wxKILL_ERROR;
+ }
+ }
+
+ return err;
}
#define WXEXECUTE_NARGS 127
-long wxExecute( const wxString& command, bool sync, wxProcess *process )
+long wxExecute( const wxString& command, int flags, wxProcess *process )
{
wxCHECK_MSG( !command.IsEmpty(), 0, wxT("can't exec empty command") );
argv[argc] = NULL;
// do execute the command
- long lRc = wxExecute(argv, sync, process);
+ long lRc = wxExecute(argv, flags, process);
// clean up
argc = 0;
return lRc;
}
-bool wxShell(const wxString& command)
+// ----------------------------------------------------------------------------
+// wxShell
+// ----------------------------------------------------------------------------
+
+static wxString wxMakeShellCommand(const wxString& command)
{
wxString cmd;
- if ( !!command )
- cmd.Printf(wxT("xterm -e %s"), command.c_str());
+ if ( !command )
+ {
+ // just an interactive shell
+ cmd = _T("xterm");
+ }
else
- cmd = command;
+ {
+ // execute command in a shell
+ cmd << _T("/bin/sh -c '") << command << _T('\'');
+ }
- return wxExecute(cmd) != 0;
+ return cmd;
}
-#if wxUSE_GUI
+bool wxShell(const wxString& command)
+{
+ return wxExecute(wxMakeShellCommand(command), wxEXEC_SYNC) == 0;
+}
-void wxHandleProcessTermination(wxEndProcessData *proc_data)
+bool wxShell(const wxString& command, wxArrayString& output)
{
- int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
+ wxCHECK_MSG( !!command, FALSE, _T("can't exec shell non interactively") );
- // waitpid is POSIX so should be available everywhere, however on older
- // systems wait() might be used instead in a loop (until the right pid
- // terminates)
- int status = 0;
- int rc;
+ return wxExecute(wxMakeShellCommand(command), output);
+}
- // wait for child termination and if waitpid() was interrupted, try again
- do
+// Shutdown or reboot the PC
+bool wxShutdown(wxShutdownFlags wFlags)
+{
+ wxChar level;
+ switch ( wFlags )
{
- rc = waitpid(pid, &status, 0);
+ case wxSHUTDOWN_POWEROFF:
+ level = _T('0');
+ break;
+
+ case wxSHUTDOWN_REBOOT:
+ level = _T('6');
+ break;
+
+ default:
+ wxFAIL_MSG( _T("unknown wxShutdown() flag") );
+ return FALSE;
}
- while ( rc == -1 && errno == EINTR );
+
+ return system(wxString::Format(_T("init %c"), level).mb_str()) == 0;
+}
- if( rc == -1 || ! (WIFEXITED(status) || WIFSIGNALED(status)) )
+#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 )
{
- wxLogSysError(_("Waiting for subprocess termination failed"));
- /* AFAIK, this can only happen if something went wrong within
- wxGTK, i.e. due to a race condition or some serious bug.
- After having fixed the order of statements in
- GTK_EndProcessDetector(). (KB)
- */
+ delete proc_data;
}
else
{
- // notify user about termination if required
- if (proc_data->process)
- {
- proc_data->process->OnTerminate(proc_data->pid,
- WEXITSTATUS(status));
- }
- // clean up
- if ( proc_data->pid > 0 )
+ // 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
+
+// ----------------------------------------------------------------------------
+// wxPipeInputStream: stream for reading from a pipe
+// ----------------------------------------------------------------------------
+
+class wxPipeInputStream : public wxFileInputStream
+{
+public:
+ wxPipeInputStream(int fd) : wxFileInputStream(fd) { }
+
+ // return TRUE if the pipe is still opened
+ bool IsOpened() const { return !Eof(); }
+
+ // return TRUE if we have anything to read, don't block
+ virtual bool CanRead() const;
+};
+
+bool wxPipeInputStream::CanRead() const
+{
+ if ( m_lasterror == wxSTREAM_EOF )
+ return FALSE;
+
+ // check if there is any input available
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+
+ const int fd = m_file->fd();
+
+ fd_set readfds;
+ FD_ZERO(&readfds);
+ FD_SET(fd, &readfds);
+ switch ( select(fd + 1, &readfds, NULL, NULL, &tv) )
+ {
+ case -1:
+ wxLogSysError(_("Impossible to get child process input"));
+ // fall through
+
+ case 0:
+ return FALSE;
+
+ default:
+ wxFAIL_MSG(_T("unexpected select() return value"));
+ // still fall through
+
+ case 1:
+ // 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();
+ }
+}
+
+// define this to let wxexec.cpp know that we know what we're doing
+#define _WX_USED_BY_WXEXECUTE_
+#include "../common/execcmn.cpp"
+
+#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 )
{
- delete proc_data;
+ wxLogSysError(_("Pipe creation failed"));
+
+ return FALSE;
}
- else
- {
- // wxExecute() will know about it
- proc_data->exitcode = status;
- proc_data->pid = 0;
+ 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]);
}
}
-}
-#endif // wxUSE_GUI
+ // dtor closes the pipe descriptors
+ ~wxPipe() { Close(); }
-#if wxUSE_GUI
- #define WXUNUSED_UNLESS_GUI(p) p
-#else
- #define WXUNUSED_UNLESS_GUI(p)
+private:
+ int m_fds[2];
+};
+
+// ----------------------------------------------------------------------------
+// wxExecute: the real worker function
+// ----------------------------------------------------------------------------
+
+#ifdef __VMS
+ #pragma message disable codeunreachable
#endif
long wxExecute(wxChar **argv,
- bool sync,
- wxProcess * WXUNUSED_UNLESS_GUI(process))
+ int flags,
+ wxProcess *process)
{
- wxCHECK_MSG( *argv, 0, wxT("can't exec empty command") );
+ // for the sync execution, we return -1 to indicate failure, but for async
+ // case we return 0 which is never a valid PID
+ //
+ // we define this as a macro, not a variable, to avoid compiler warnings
+ // about "ERROR_RETURN_CODE value may be clobbered by fork()"
+ #define ERROR_RETURN_CODE ((flags & wxEXEC_SYNC) ? -1 : 0)
+
+ wxCHECK_MSG( *argv, ERROR_RETURN_CODE, wxT("can't exec empty command") );
#if wxUSE_UNICODE
int mb_argc = 0;
while (argv[mb_argc])
{
- wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
- mb_argv[mb_argc] = strdup(mb_arg);
- mb_argc++;
+ wxWX2MBbuf mb_arg = wxConvertWX2MB(argv[mb_argc]);
+ mb_argv[mb_argc] = strdup(mb_arg);
+ mb_argc++;
}
mb_argv[mb_argc] = (char *) NULL;
#if wxUSE_GUI
// create pipes
- int end_proc_detect[2];
- if (pipe(end_proc_detect) == -1)
+ wxPipe pipeEndProcDetect;
+ if ( !pipeEndProcDetect.Create() )
{
- wxLogSysError( _("Pipe creation failed") );
+ wxLogError( _("Failed to execute '%s'\n"), *argv );
ARGS_CLEANUP;
- return 0;
+ return ERROR_RETURN_CODE;
}
#endif // wxUSE_GUI
+ // pipes for inter process communication
+ wxPipe pipeIn, // stdin
+ pipeOut, // stdout
+ pipeErr; // stderr
+
+ if ( process && process->IsRedirected() )
+ {
+ if ( !pipeIn.Create() || !pipeOut.Create() || !pipeErr.Create() )
+ {
+ wxLogError( _("Failed to execute '%s'\n"), *argv );
+
+ ARGS_CLEANUP;
+
+ return ERROR_RETURN_CODE;
+ }
+ }
+
// 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)
+ if ( pid == -1 ) // error?
{
wxLogSysError( _("Fork failed") );
ARGS_CLEANUP;
- return 0;
+ return ERROR_RETURN_CODE;
}
- else if (pid == 0)
+ else if ( pid == 0 ) // we're in child
{
-#if wxUSE_GUI
- // we're in child
- close(end_proc_detect[0]); // close reading side
-#endif // wxUSE_GUI
-
- // These three lines close the open file descriptors to to avoid any
+ // These lines close the open file descriptors to to avoid any
// input/output which might block the process or irritate the user. If
- // one wants proper IO for the subprocess, the right thing to do is
- // to start an xterm executing it.
- if (sync == 0)
+ // one wants proper IO for the subprocess, the right thing to do is to
+ // start an xterm executing it.
+ if ( !(flags & wxEXEC_SYNC) )
{
- // leave stderr opened, it won't do any hurm
for ( int fd = 0; fd < FD_SETSIZE; fd++ )
{
+ if ( fd == pipeIn[wxPipe::Read]
+ || fd == pipeOut[wxPipe::Write]
+ || fd == pipeErr[wxPipe::Write]
#if wxUSE_GUI
- if ( fd == end_proc_detect[1] )
- continue;
+ || fd == pipeEndProcDetect[wxPipe::Write]
#endif // wxUSE_GUI
+ )
+ {
+ // don't close this one, we still need it
+ continue;
+ }
+ // leave stderr opened too, it won't do any harm
if ( fd != STDERR_FILENO )
close(fd);
}
}
-#if 0
- close(STDERR_FILENO);
+#if !defined(__VMS) && !defined(__EMX__)
+ if ( flags & wxEXEC_MAKE_GROUP_LEADER )
+ {
+ // Set process group to child process' pid. Then killing -pid
+ // of the parent will kill the process and all of its children.
+ setsid();
+ }
+#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
- // some programs complain about stderr not being open, so redirect
- // them:
- open("/dev/null", O_RDONLY); // stdin
- open("/dev/null", O_WRONLY); // stdout
- open("/dev/null", O_WRONLY); // stderr
-#endif
+ // redirect stdin, stdout and stderr
+ if ( pipeIn.IsOk() )
+ {
+ if ( dup2(pipeIn[wxPipe::Read], STDIN_FILENO) == -1 ||
+ dup2(pipeOut[wxPipe::Write], STDOUT_FILENO) == -1 ||
+ dup2(pipeErr[wxPipe::Write], STDERR_FILENO) == -1 )
+ {
+ wxLogSysError(_("Failed to redirect child process input/output"));
+ }
+
+ pipeIn.Close();
+ pipeOut.Close();
+ pipeErr.Close();
+ }
execvp (*mb_argv, mb_argv);
// there is no return after successful exec()
- wxFprintf(stderr, _("Can't execute '%s'\n"), *argv);
-
_exit(-1);
+
+ // some compilers complain about missing return - of course, they
+ // should know that exit() doesn't return but what else can we do if
+ // they don't?
+ //
+ // and, sure enough, other compilers complain about unreachable code
+ // after exit() call, so we can just always have return here...
+#if defined(__VMS) || defined(__INTEL_COMPILER)
+ return 0;
+#endif
}
- else
+ else // we're in parent
{
-#if wxUSE_GUI
+ ARGS_CLEANUP;
+
+ // prepare for IO redirection
+
+#if wxUSE_STREAMS
+ // the input buffer bufOut is connected to stdout, this is why it is
+ // called bufOut and not bufIn
+ wxStreamTempInputBuffer bufOut,
+ bufErr;
+#endif // wxUSE_STREAMS
+
+ if ( process && process->IsRedirected() )
+ {
+#if wxUSE_STREAMS
+ wxOutputStream *inStream =
+ new wxFileOutputStream(pipeIn.Detach(wxPipe::Write));
+
+ wxPipeInputStream *outStream =
+ new wxPipeInputStream(pipeOut.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
+ }
+
+ if ( pipeIn.IsOk() )
+ {
+ pipeIn.Close();
+ pipeOut.Close();
+ pipeErr.Close();
+ }
+
+#if wxUSE_GUI && !defined(__WXMICROWIN__)
wxEndProcessData *data = new wxEndProcessData;
- ARGS_CLEANUP;
+ data->tag = wxAddProcessCallback
+ (
+ data,
+ pipeEndProcDetect.Detach(wxPipe::Read)
+ );
+
+ pipeEndProcDetect.Close();
- if ( sync )
+ if ( flags & wxEXEC_SYNC )
{
- wxASSERT_MSG( !process, wxT("wxProcess param ignored for sync exec") );
+ // 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;
- data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
- // we're in parent
- close(end_proc_detect[1]); // close writing side
- // it will be set to 0 from GTK_EndProcessDetector
- while (data->pid != 0)
+ 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;
return exitcode;
}
- else
+ 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;
- data->tag = wxAddProcessCallback(data, end_proc_detect[0]);
- // we're in parent
- close(end_proc_detect[1]); // close writing side
+ data->process = process;
+ data->pid = pid;
return pid;
}
#else // !wxUSE_GUI
- wxASSERT_MSG( sync, wxT("async execution not supported yet") );
+
+ wxASSERT_MSG( flags & wxEXEC_SYNC,
+ wxT("async execution not supported yet") );
int exitcode = 0;
if ( waitpid(pid, &exitcode, 0) == -1 || !WIFEXITED(exitcode) )
return exitcode;
#endif // wxUSE_GUI
}
- return 0;
- #undef ARGS_CLEANUP
+ return ERROR_RETURN_CODE;
}
+#ifdef __VMS
+ #pragma message enable codeunreachable
+#endif
+
+#undef ERROR_RETURN_CODE
+#undef ARGS_CLEANUP
+
// ----------------------------------------------------------------------------
// file and directory functions
// ----------------------------------------------------------------------------
const wxChar* wxGetHomeDir( wxString *home )
{
*home = wxGetUserHome( wxString() );
+ wxString tmp;
if ( home->IsEmpty() )
*home = wxT("/");
-
+#ifdef __VMS
+ tmp = *home;
+ if ( tmp.Last() != wxT(']'))
+ if ( tmp.Last() != wxT('/')) *home << wxT('/');
+#endif
return home->c_str();
}
if ((ptr = wxGetenv(wxT("HOME"))) != NULL)
{
+#if wxUSE_UNICODE
+ wxWCharBuffer buffer( ptr );
+ return buffer;
+#else
return ptr;
+#endif
}
if ((ptr = wxGetenv(wxT("USER"))) != NULL || (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)
{
if ((who = getpwuid (getuid ())) != NULL)
{
// pw_gecos field in struct passwd is not standard
-#if HAVE_PW_GECOS
+#ifdef HAVE_PW_GECOS
char *comma = strchr(who->pw_gecos, ',');
if (comma)
*comma = '\0'; // cut off non-name comment fields
return FALSE;
}
+#ifndef __WXMAC__
wxString wxGetOsDescription()
{
#ifndef WXWIN_OS_DESCRIPTION
#error WXWIN_OS_DESCRIPTION should be defined in config.h by configure
#else
- return WXWIN_OS_DESCRIPTION;
+ return wxString::FromAscii( WXWIN_OS_DESCRIPTION );
+#endif
+}
#endif
+
+// this function returns the GUI toolkit version in GUI programs, but OS
+// version in non-GUI ones
+#if !wxUSE_GUI
+
+int wxGetOsVersion(int *majorVsn, int *minorVsn)
+{
+ int major, minor;
+ char name[256];
+
+ if ( sscanf(WXWIN_OS_DESCRIPTION, "%s %d.%d", name, &major, &minor) != 3 )
+ {
+ // unreckognized uname string format
+ major = minor = -1;
+ }
+
+ if ( majorVsn )
+ *majorVsn = major;
+ if ( minorVsn )
+ *minorVsn = minor;
+
+ return wxUNIX;
+}
+
+#endif // !wxUSE_GUI
+
+unsigned long wxGetProcessId()
+{
+ return (unsigned long)getpid();
}
+long wxGetFreeMemory()
+{
+#if defined(__LINUX__)
+ // get it from /proc/meminfo
+ FILE *fp = fopen("/proc/meminfo", "r");
+ if ( fp )
+ {
+ long memFree = -1;
+
+ 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);
+ }
+
+ fclose(fp);
+
+ return memFree;
+ }
+#elif defined(__SUN__) && defined(_SC_AVPHYS_PAGES)
+ return sysconf(_SC_AVPHYS_PAGES)*sysconf(_SC_PAGESIZE);
+//#elif defined(__FREEBSD__) -- might use sysctl() to find it out, probably
+#endif
+
+ // can't find it out
+ return -1;
+}
+
+bool wxGetDiskSpace(const wxString& path, wxLongLong *pTotal, wxLongLong *pFree)
+{
+#if defined(HAVE_STATFS) || defined(HAVE_STATVFS)
+ // the case to "char *" is needed for AIX 4.3
+ wxStatFs fs;
+ if ( statfs((char *)(const char*)path.fn_str(), &fs) != 0 )
+ {
+ wxLogSysError( wxT("Failed to get file system statistics") );
+
+ 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;
+#else // HAVE_STATFS
+ wxLongLong blockSize = fs.f_bsize;
+#endif // HAVE_STATVFS/HAVE_STATFS
+
+ if ( pTotal )
+ {
+ *pTotal = wxLongLong(fs.f_blocks) * blockSize;
+ }
+
+ if ( pFree )
+ {
+ *pFree = wxLongLong(fs.f_bavail) * blockSize;
+ }
+
+ return TRUE;
+#else // !HAVE_STATFS && !HAVE_STATVFS
+ return FALSE;
+#endif // HAVE_STATFS
+}
+
+// ----------------------------------------------------------------------------
+// env vars
+// ----------------------------------------------------------------------------
+
+bool wxGetEnv(const wxString& var, wxString *value)
+{
+ // wxGetenv is defined as getenv()
+ wxChar *p = wxGetenv(var);
+ if ( !p )
+ return FALSE;
+
+ if ( value )
+ {
+ *value = p;
+ }
+
+ return TRUE;
+}
+
+bool wxSetEnv(const wxString& variable, const wxChar *value)
+{
+#if defined(HAVE_SETENV)
+ return setenv(variable.mb_str(),
+ value ? (const char *)wxString(value).mb_str()
+ : NULL,
+ 1 /* overwrite */) == 0;
+#elif defined(HAVE_PUTENV)
+ wxString s = variable;
+ if ( value )
+ s << _T('=') << value;
+
+ // transform to ANSI
+ const char *p = s.mb_str();
+
+ // the string will be free()d by libc
+ char *buf = (char *)malloc(strlen(p) + 1);
+ strcpy(buf, p);
+
+ return putenv(buf) == 0;
+#else // no way to set an env var
+ return FALSE;
+#endif
+}
+
+// ----------------------------------------------------------------------------
+// signal handling
+// ----------------------------------------------------------------------------
+
+#if wxUSE_ON_FATAL_EXCEPTION
+
+#include <signal.h>
+
+extern "C" void wxFatalSignalHandler(wxTYPE_SA_HANDLER)
+{
+ if ( wxTheApp )
+ {
+ // give the user a chance to do something special about this
+ wxTheApp->OnFatalException();
+ }
+
+ abort();
+}
+
+bool wxHandleFatalExceptions(bool doit)
+{
+ // old sig handlers
+ static bool s_savedHandlers = FALSE;
+ static struct sigaction s_handlerFPE,
+ s_handlerILL,
+ s_handlerBUS,
+ s_handlerSEGV;
+
+ bool ok = TRUE;
+ if ( doit && !s_savedHandlers )
+ {
+ // install the signal handler
+ struct sigaction act;
+
+ // some systems extend it with non std fields, so zero everything
+ memset(&act, 0, sizeof(act));
+
+ act.sa_handler = wxFatalSignalHandler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+
+ ok &= sigaction(SIGFPE, &act, &s_handlerFPE) == 0;
+ ok &= sigaction(SIGILL, &act, &s_handlerILL) == 0;
+ ok &= sigaction(SIGBUS, &act, &s_handlerBUS) == 0;
+ ok &= sigaction(SIGSEGV, &act, &s_handlerSEGV) == 0;
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to install our signal handler."));
+ }
+
+ s_savedHandlers = TRUE;
+ }
+ else if ( s_savedHandlers )
+ {
+ // uninstall the signal handler
+ ok &= sigaction(SIGFPE, &s_handlerFPE, NULL) == 0;
+ ok &= sigaction(SIGILL, &s_handlerILL, NULL) == 0;
+ ok &= sigaction(SIGBUS, &s_handlerBUS, NULL) == 0;
+ ok &= sigaction(SIGSEGV, &s_handlerSEGV, NULL) == 0;
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to uninstall our signal handler."));
+ }
+
+ s_savedHandlers = FALSE;
+ }
+ //else: nothing to do
+
+ return ok;
+}
+
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
// ----------------------------------------------------------------------------
// error and debug output routines (deprecated, use wxLog)
// ----------------------------------------------------------------------------
+#if WXWIN_COMPATIBILITY_2_2
+
void wxDebugMsg( const char *format, ... )
{
va_list ap;
exit(3); // the same exit code as for abort()
}
+#endif // WXWIN_COMPATIBILITY_2_2
+
projects / wxWidgets.git / blobdiff