#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/unix/execute.h"
#include "wx/unix/private.h"
+#ifdef wxHAS_GENERIC_PROCESS_CALLBACK
+#include "wx/private/fdiodispatcher.h"
+#endif
+
#include <pwd.h>
+#include <sys/wait.h> // waitpid()
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
const wxChar* wxGetHomeDir( wxString *home )
{
- *home = wxGetUserHome( wxEmptyString );
+ *home = wxGetUserHome();
wxString tmp;
if ( home->empty() )
*home = wxT("/");
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;
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 ((ptr = wxGetenv(wxT("USER"))) != NULL ||
+ (ptr = wxGetenv(wxT("LOGNAME"))) != NULL)
{
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());
}
bool wxIsPlatform64Bit()
{
- wxString machine = wxGetCommandOutput(wxT("uname -m"));
-
- // NOTE: these tests are not 100% reliable!
- return machine.Contains(wxT("AMD64")) ||
- machine.Contains(wxT("IA64")) ||
- machine.Contains(wxT("x64")) ||
- machine.Contains(wxT("X64")) ||
- machine.Contains(wxT("alpha")) ||
- machine.Contains(wxT("hppa64")) ||
- machine.Contains(wxT("ppc64"));
+ 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"));
}
// these functions are in mac/utils.cpp for wxMac
// get OS version
int major, minor;
wxString release = wxGetCommandOutput(wxT("uname -r"));
- if ( !release.empty() && wxSscanf(release, wxT("%d.%d"), &major, &minor) != 2 )
+ if ( release.empty() ||
+ wxSscanf(release.c_str(), wxT("%d.%d"), &major, &minor) != 2 )
{
- // unrecognized uname string format
+ // failed to get version string or unrecognized format
major =
minor = -1;
}
// 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 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 )
// transform to ANSI
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;
#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
// ----------------------------------------------------------------------------
#if wxUSE_GUI
+#ifdef __DARWIN__
+ #include <sys/errno.h>
+#endif
// ----------------------------------------------------------------------------
// wxExecute support
// ----------------------------------------------------------------------------
-// Darwin doesn't use the same process end detection mechanisms so we don't
-// need wxExecute-related helpers for it
-#if !(defined(__DARWIN__) && defined(__WXMAC__))
+/*
+ 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)
{
}
-#if defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
- endProcData->tag = wxAddProcessCallbackForPid(endProcData, 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 // defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
+ 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;
- wxWindowDisabler *wd = flags & wxEXEC_NODISABLE ? NULL
- : new wxWindowDisabler;
+ int exitcode = 0;
- // endProcData->pid will be set to 0 from GTK_EndProcessDetector when the
- // process terminates
- while ( endProcData->pid != 0 )
- {
- bool idle = true;
+ wxWindowDisabler *wd = flags & (wxEXEC_NODISABLE | wxEXEC_NOEVENTS)
+ ? NULL
+ : new wxWindowDisabler;
-#if HAS_PIPE_INPUT_STREAM
- if ( execData.bufOut )
+ 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)
{
- execData.bufOut->Update();
- idle = false;
+ result = waitpid(execData.pid, &status, 0);
}
- if ( execData.bufErr )
+#endif
+
+ if ( result == -1 )
{
- execData.bufErr->Update();
- idle = false;
+ 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
+ // wxHandleProcessTermination 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);
+ // 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();
- }
+ // give GTK+ a chance to call GTK_EndProcessDetector here and
+ // also repaint the GUI
+ wxYield();
+ }
- int exitcode = endProcData->exitcode;
+ exitcode = endProcData->exitcode;
+ }
delete wd;
delete endProcData;
}
}
+#ifdef wxHAS_GENERIC_PROCESS_CALLBACK
+struct wxEndProcessFDIOHandler : public wxFDIOHandler
+{
+ wxEndProcessFDIOHandler(wxEndProcessData *data, int fd)
+ : m_data(data), m_fd(fd)
+ {}
+
+ virtual void OnReadWaiting()
+ { wxFAIL_MSG("this isn't supposed to happen"); }
+ virtual void OnWriteWaiting()
+ { wxFAIL_MSG("this isn't supposed to happen"); }
+
+ virtual void OnExceptionWaiting()
+ {
+ int pid = (m_data->pid > 0) ? m_data->pid : -(m_data->pid);
+ int status = 0;
+
+ // has the process really terminated?
+ int rc = waitpid(pid, &status, WNOHANG);
+ if ( rc == 0 )
+ {
+ // This can only happen if the child application closes our dummy
+ // pipe that is used to monitor its lifetime; in that case, our
+ // best bet is to pretend the process did terminate, because
+ // otherwise wxExecute() would hang indefinitely
+ // (OnExceptionWaiting() won't be called again, the descriptor
+ // is closed now).
+ wxLogDebug("Child process (PID %i) still alive, even though notification was received that it terminated.", pid);
+ }
+ else if ( rc == -1 )
+ {
+ // As above, if waitpid() fails, the best we can do is to log the
+ // error and pretend the child terminated:
+ wxLogSysError(_("Failed to check child process' status"));
+ }
+
+ // set exit code to -1 if something bad happened
+ m_data->exitcode = (rc > 0 && WIFEXITED(status))
+ ? WEXITSTATUS(status)
+ : -1;
+
+ wxLogTrace("exec",
+ "Child process (PID %i) terminated with exit code %i",
+ pid, m_data->exitcode);
+
+ // child exited, end waiting
+ wxFDIODispatcher::Get()->UnregisterFD(m_fd);
+ close(m_fd);
+
+ m_data->fdioHandler = NULL;
+ wxHandleProcessTermination(m_data);
+
+ delete this;
+ }
+
+ wxEndProcessData *m_data;
+ int m_fd;
+};
+
+int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
+{
+ proc_data->fdioHandler = new wxEndProcessFDIOHandler(proc_data, fd);
+ wxFDIODispatcher::Get()->RegisterFD
+ (
+ fd,
+ proc_data->fdioHandler,
+ wxFDIO_EXCEPTION
+ );
+ return fd; // unused, but return something unique for the tag
+}
+#endif // wxHAS_GENERIC_PROCESS_CALLBACK
+
#endif // wxUSE_GUI
#if wxUSE_BASE
projects / wxWidgets.git / blobdiff