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wxProcess fixes (Detach() added), cleared/corrected wxExecute() documentation

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1709 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-02-17 17:56:59 +00:00
parent ca5c8b2df6
commit 7e84f02dfd
6 changed files with 149 additions and 100 deletions
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85
src/gtk/utilsgtk.cpp
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@@ -96,7 +96,7 @@ int wxGetOsVersion(int *majorVsn, int *minorVsn)
{
if (majorVsn) *majorVsn = GTK_MAJOR_VERSION;
if (minorVsn) *minorVsn = GTK_MINOR_VERSION;
return wxGTK;
}
@@ -123,11 +123,11 @@ char *wxGetUserHome( const wxString &user )
{
return ptr;
}
if ((ptr = getenv("USER")) != NULL || (ptr = getenv("LOGNAME")) != NULL)
if ((ptr = getenv("USER")) != NULL || (ptr = getenv("LOGNAME")) != NULL)
{
who = getpwnam(ptr);
}
/* We now make sure the the user exists! */
if (who == NULL)
{
@@ -299,10 +299,10 @@ long wxExecute( char **argv, bool sync, wxProcess *process )
wxCHECK_MSG( *argv, 0, "can't exec empty command" );
/* Create pipes */
if (pipe(end_proc_detect) == -1)
if (pipe(end_proc_detect) == -1)
{
wxLogSysError( "Pipe creation failed" );
return 0;
wxLogSysError( "Pipe creation failed" );
return 0;
}
/* fork the process */
@@ -311,65 +311,68 @@ long wxExecute( char **argv, bool sync, wxProcess *process )
#else
pid_t pid = fork();
#endif
if (pid == -1)
if (pid == -1)
{
wxLogSysError( "Fork failed" );
return 0;
}
else if (pid == 0)
else if (pid == 0)
{
// we're in child
close(end_proc_detect[0]); // close reading side
// These three 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 sub-
// process, the "right thing to do" is to start an xterm executing
// it.
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
// These three 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 sub-
// process, the "right thing to do" is to start an xterm executing
// it.
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
// some programs complain about sterr not being open, so
// redirect them:
open("/dev/null", O_RDONLY); // stdin
open("/dev/null", O_WRONLY); // stdout
open("/dev/null", O_WRONLY); // stderr
open("/dev/null", O_WRONLY); // stdout
open("/dev/null", O_WRONLY); // stderr
#ifdef _AIX
execvp ((const char *)*argv, (const char **)argv);
#else
execvp (*argv, argv);
#endif
// there is no return after successful exec()
wxLogSysError( "Can't execute '%s'", *argv);
_exit(-1);
}
else
else
{
// we're in parent
close(end_proc_detect[1]); // close writing side
data->tag = gdk_input_add(end_proc_detect[0], GDK_INPUT_READ,
GTK_EndProcessDetector, (gpointer)data);
data->pid = pid;
if (!sync)
{
data->process = process;
}
else
{
data->process = (wxProcess *) NULL;
data->pid = -(data->pid);
// we're in parent
close(end_proc_detect[1]); // close writing side
data->tag = gdk_input_add(end_proc_detect[0], GDK_INPUT_READ,
GTK_EndProcessDetector, (gpointer)data);
data->pid = pid;
if (!sync)
{
data->process = process;
}
else
{
data->process = (wxProcess *) NULL;
data->pid = -(data->pid);
while (data->pid != 0)
wxYield();
while (data->pid != 0)
wxYield();
delete data;
}
delete data;
}
// @@@ our return value indicates success even if execvp() in the child
// failed!
return pid;
// @@@ our return value indicates success even if execvp() in the child
// failed!
return pid;
}
}
@@ -389,7 +392,7 @@ long wxExecute( const wxString& command, bool sync, wxProcess *process )
/* loop */ ;
long lRc = wxExecute(argv, sync, process);
delete [] tmp;
return lRc;