#include "wx/intl.h"
#include "wx/log.h"
+#include "wx/app.h"
#include "wx/utils.h"
#include "wx/process.h"
#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 ( err )
+ {
+ 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
// wxStream classes to support IO redirection in wxExecute
// ----------------------------------------------------------------------------
+#if wxUSE_STREAMS
+
class wxProcessFileInputStream : public wxInputStream
{
public:
return ret;
}
+#endif // wxUSE_STREAMS
+
long wxExecute(wxChar **argv,
bool sync,
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 ((sync) ? -1 : 0)
+
+ wxCHECK_MSG( *argv, ERROR_RETURN_CODE, wxT("can't exec empty command") );
#if wxUSE_UNICODE
int mb_argc = 0;
ARGS_CLEANUP;
- return 0;
+ return ERROR_RETURN_CODE;
}
#endif // wxUSE_GUI
- int pipeIn[2];
- int pipeOut[2];
+ // pipes for inter process communication
+ int pipeIn[2], // stdin
+ pipeOut[2], // stdout
+ pipeErr[2]; // stderr
+
pipeIn[0] = pipeIn[1] =
- pipeOut[0] = pipeOut[1] = -1;
+ pipeOut[0] = pipeOut[1] =
+ pipeErr[0] = pipeErr[1] = -1;
if ( process && process->IsRedirected() )
{
- if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 )
+ if ( pipe(pipeIn) == -1 || pipe(pipeOut) == -1 || pipe(pipeErr) == -1 )
{
#if wxUSE_GUI
// free previously allocated resources
ARGS_CLEANUP;
- return 0;
+ return ERROR_RETURN_CODE;
}
}
close(pipeIn[1]);
close(pipeOut[0]);
close(pipeOut[1]);
+ close(pipeErr[0]);
+ close(pipeErr[1]);
#endif // wxUSE_GUI
wxLogSysError( _("Fork failed") );
ARGS_CLEANUP;
- return 0;
+ return ERROR_RETURN_CODE;
}
else if ( pid == 0 ) // we're in child
{
{
for ( int fd = 0; fd < FD_SETSIZE; fd++ )
{
- if ( fd == pipeIn[0] || fd == pipeOut[1]
+ if ( fd == pipeIn[0] || fd == pipeOut[1] || fd == pipeErr[1]
#if wxUSE_GUI
|| fd == end_proc_detect[1]
#endif // wxUSE_GUI
}
}
- // redirect stdio and stdout
- // (TODO: what about stderr?)
+ // redirect stdio, stdout and stderr
if ( pipeIn[0] != -1 )
{
if ( dup2(pipeIn[0], STDIN_FILENO) == -1 ||
- dup2(pipeOut[1], STDOUT_FILENO) == -1 )
+ dup2(pipeOut[1], STDOUT_FILENO) == -1 ||
+ dup2(pipeErr[1], STDERR_FILENO) == -1 )
{
- wxLogSysError(_("Failed to redirect child process "
- "input/output"));
+ wxLogSysError(_("Failed to redirect child process input/output"));
}
close(pipeIn[0]);
close(pipeOut[1]);
+ close(pipeErr[1]);
}
execvp (*mb_argv, mb_argv);
// pipe initialization: construction of the wxStreams
if ( process && process->IsRedirected() )
{
+#if wxUSE_STREAMS
// These two streams are relative to this process.
wxOutputStream *outStream = new wxProcessFileOutputStream(pipeIn[1]);
wxInputStream *inStream = new wxProcessFileInputStream(pipeOut[0]);
+ wxInputStream *errStream = new wxProcessFileInputStream(pipeErr[0]);
+
+ process->SetPipeStreams(inStream, outStream, errStream);
+#endif // wxUSE_STREAMS
+
close(pipeIn[0]); // close reading side
close(pipeOut[1]); // close writing side
-
- process->SetPipeStreams(inStream, outStream);
+ close(pipeErr[1]); // close writing side
}
-#if wxUSE_GUI
+#if wxUSE_GUI && !defined(__WXMICROWIN__)
wxEndProcessData *data = new wxEndProcessData;
if ( sync )
return exitcode;
#endif // wxUSE_GUI
}
-
- return 0;
-
- #undef ARGS_CLEANUP
+#ifdef __VMS
+ // VMS does not recognise exit as a return and complains about
+ // a missing return
+ // I think VMS is wrong in this
+ // JJ
+ return 0;
+#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 ((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
#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
+
+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;
+}
+
+// ----------------------------------------------------------------------------
+// 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 ? wxString(value).mb_str().data()
+ : 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>
+
+static 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)
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff