Commit 4e5a5dbb authored by Jehan's avatar Jehan

app: make the backtrace GUI actually work on Win32.

It was previously untested, hence as expected needed fixes. First I add
our own exception handler using Win32 API SetUnhandledExceptionFilter().
Second, I reorder things so that ExcHndlInit() is run after this setter,
since they will be executed as a FILO and we need backtraces to be
generated before our separate GUI runs. Last I run the backtrace GUI as
async. No need to keep the main GIMP waiting since the traces have
already been generated into a separate file.

Also replace gtk_show_uri() by the implementation taken straight from
our web-browser plug-in, since apparently gtk_show_uri() doesn't work in
Windows (and probably not macOS either since I see we have a separate
implementation for this platform as well). I would like to be able to
use the PDB but can't because this code needs to be usable both within
the main process and into a separate tool process. Ideally, this should
just be a utils function which could be included without a problem.
parent a3a4df95
......@@ -284,14 +284,18 @@ gimp_eek (const gchar *reason,
#ifndef GIMP_CONSOLE_COMPILATION
if (generate_backtrace && ! the_errors_gimp->no_interface)
{
/* If enabled (it is disabled by default), the GUI preference
/* If GUI backtrace enabled (it is disabled by default), it
* takes precedence over the command line argument.
*/
gchar *args[7] = { "gimpdebug-2.0", full_prog_name, NULL,
#ifdef G_OS_WIN32
const gchar *gimpdebug = "gimpdebug-2.0.exe";
#else
const gchar *gimpdebug = "gimpdebug-2.0";
#endif
gchar *args[7] = { (gchar *) gimpdebug, full_prog_name, NULL,
(gchar *) reason, (gchar *) message,
backtrace_file, NULL };
gchar pid[16];
gint exit_status;
g_snprintf (pid, 16, "%u", (guint) getpid ());
args[2] = pid;
......@@ -302,9 +306,24 @@ gimp_eek (const gchar *reason,
* to keep GIMP up long enough for the debugger to get its
* trace.
*/
g_spawn_sync (NULL, args, NULL,
#ifdef HAVE_EXCHNDL
/* On Win32, the trace has already been processed by ExcHnl
* and is waiting for us in a text file.
* We just want to spawn the trace GUI and exit GIMP directly.
*/
if (g_file_test (backtrace_file, G_FILE_TEST_IS_REGULAR) &&
g_spawn_async (NULL, args, NULL,
G_SPAWN_SEARCH_PATH | G_SPAWN_STDERR_TO_DEV_NULL | G_SPAWN_STDOUT_TO_DEV_NULL,
NULL, NULL, NULL, NULL, &exit_status, NULL);
NULL, NULL, NULL, NULL))
#else
/* On Unix machines, the spawned process will attach to the
* main GIMP process and will generate the backtrace. So we
* run it as a synced process.
*/
if (g_spawn_sync (NULL, args, NULL,
G_SPAWN_SEARCH_PATH | G_SPAWN_STDERR_TO_DEV_NULL | G_SPAWN_STDOUT_TO_DEV_NULL,
NULL, NULL, NULL, NULL, NULL, NULL))
#endif
eek_handled = TRUE;
}
#endif /* !GIMP_CONSOLE_COMPILATION */
......
......@@ -36,11 +36,6 @@
#ifdef G_OS_WIN32
#include <io.h> /* get_osfhandle */
#ifdef HAVE_EXCHNDL
#include <time.h>
#include <exchndl.h>
#endif
#endif /* G_OS_WIN32 */
#ifndef GIMP_CONSOLE_COMPILATION
......@@ -318,6 +313,9 @@ main (int argc,
argv = __argv;
#endif
/* Start signal handlers early. */
gimp_init_signal_handlers (&backtrace_file);
#ifdef G_OS_WIN32
/* Reduce risks */
{
......@@ -364,34 +362,6 @@ main (int argc,
g_free (bin_dir);
}
#ifdef HAVE_EXCHNDL
/* Use Dr. Mingw (dumps backtrace on crash) if it is available. */
{
time_t t;
gchar *filename;
gchar *dir;
/* This has to be the non-roaming directory (i.e., the local
directory) as backtraces correspond to the binaries on this
system. */
dir = g_build_filename (g_get_user_data_dir (),
GIMPDIR, GIMP_USER_VERSION, "CrashLog",
NULL);
/* Ensure the path exists. */
g_mkdir_with_parents (dir, 0700);
time (&t);
filename = g_strdup_printf ("%s-crash-%" G_GUINT64_FORMAT ".txt",
g_get_prgname(), t);
backtrace_file = g_build_filename (dir, filename, NULL);
g_free (filename);
g_free (dir);
ExcHndlInit ();
ExcHndlSetLogFileNameA (backtrace_file);
}
#endif
#ifndef _WIN64
{
typedef BOOL (WINAPI *t_SetProcessDEPPolicy) (DWORD dwFlags);
......@@ -538,8 +508,6 @@ main (int argc,
if (abort_message)
app_abort (no_interface, abort_message);
gimp_init_signal_handlers ();
if (system_gimprc)
system_gimprc_file = g_file_new_for_commandline_arg (system_gimprc);
......
......@@ -30,22 +30,68 @@
#include "errors.h"
#include "signals.h"
#ifdef HAVE_EXCHNDL
#include <windows.h>
#include <time.h>
#include <exchndl.h>
static LPTOP_LEVEL_EXCEPTION_FILTER g_prevExceptionFilter = NULL;
static LONG WINAPI gimp_sigfatal_handler (PEXCEPTION_POINTERS pExceptionInfo);
#else
#ifndef G_OS_WIN32
static void gimp_sigfatal_handler (gint sig_num) G_GNUC_NORETURN;
#endif
void
gimp_init_signal_handlers (void)
gimp_init_signal_handlers (gchar **backtrace_file)
{
#ifndef G_OS_WIN32
/* No use catching these on Win32, the user won't get any stack
* trace from glib anyhow. It's better to let Windows inform about
* the program error, and offer debugging (if the user has installed
* MSVC or some other compiler that knows how to install itself as a
#ifdef G_OS_WIN32
/* Use Dr. Mingw (dumps backtrace on crash) if it is available. Do
* nothing otherwise on Win32.
* The user won't get any stack trace from glib anyhow.
* Without Dr. MinGW, It's better to let Windows inform about the
* program error, and offer debugging (if the user has installed MSVC
* or some other compiler that knows how to install itself as a
* handler for program errors).
*/
#ifdef HAVE_EXCHNDL
time_t t;
gchar *filename;
gchar *dir;
/* Order is very important here. We need to add our signal handler
* first, then run ExcHndlInit() which will add its own handler, so
* that ExcHnl's handler runs first since that's in FILO order.
*/
if (! g_prevExceptionFilter)
g_prevExceptionFilter = SetUnhandledExceptionFilter (gimp_sigfatal_handler);
/* This has to be the non-roaming directory (i.e., the local
directory) as backtraces correspond to the binaries on this
system. */
dir = g_build_filename (g_get_user_data_dir (),
GIMPDIR, GIMP_USER_VERSION, "CrashLog",
NULL);
/* Ensure the path exists. */
g_mkdir_with_parents (dir, 0700);
time (&t);
filename = g_strdup_printf ("%s-crash-%" G_GUINT64_FORMAT ".txt",
g_get_prgname(), t);
*backtrace_file = g_build_filename (dir, filename, NULL);
g_free (filename);
g_free (dir);
ExcHndlInit ();
ExcHndlSetLogFileNameA (*backtrace_file);
#endif /* HAVE_EXCHNDL */
#else
/* Handle fatal signals */
......@@ -67,11 +113,32 @@ gimp_init_signal_handlers (void)
/* Restart syscalls on SIGCHLD */
gimp_signal_private (SIGCHLD, SIG_DFL, SA_RESTART);
#endif /* ! G_OS_WIN32 */
#endif /* G_OS_WIN32 */
}
#ifndef G_OS_WIN32
#ifdef G_OS_WIN32
#ifdef HAVE_EXCHNDL
static LONG WINAPI
gimp_sigfatal_handler (PEXCEPTION_POINTERS pExceptionInfo)
{
/* Just in case, so that we don't loop or anything similar, just
* re-establish previous handler.
*/
SetUnhandledExceptionFilter (g_prevExceptionFilter);
/* Now process the exception. */
gimp_fatal_error ("unhandled exception");
if (g_prevExceptionFilter && g_prevExceptionFilter != gimp_sigfatal_handler)
return g_prevExceptionFilter (pExceptionInfo);
else
return EXCEPTION_CONTINUE_SEARCH;
}
#endif
#else
/* gimp core signal handler for fatal signals */
......@@ -97,4 +164,4 @@ gimp_sigfatal_handler (gint sig_num)
}
}
#endif /* ! G_OS_WIN32 */
#endif /* G_OS_WIN32 */
......@@ -23,7 +23,7 @@
#endif
void gimp_init_signal_handlers (void);
void gimp_init_signal_handlers (gchar **backtrace_file);
#endif /* __SIGNALS_H__ */
......@@ -31,6 +31,15 @@
#include <glib.h>
#include <gtk/gtk.h>
#ifdef PLATFORM_OSX
#import <Cocoa/Cocoa.h>
#endif
#ifdef G_OS_WIN32
#undef DATADIR
#include <windows.h>
#endif
#include "gimpcriticaldialog.h"
#include "version.h"
......@@ -48,6 +57,9 @@ static void gimp_critical_dialog_finalize (GObject *object);
static void gimp_critical_dialog_response (GtkDialog *dialog,
gint response_id);
static gboolean browser_open_url (const gchar *url,
GError **error);
G_DEFINE_TYPE (GimpCriticalDialog, gimp_critical_dialog, GTK_TYPE_DIALOG)
#define parent_class gimp_critical_dialog_parent_class
......@@ -166,6 +178,102 @@ gimp_critical_dialog_finalize (GObject *object)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/* XXX This is taken straight from plug-ins/common/web-browser.c
* This really sucks but this class also needs to be called by
* tools/gimpdebug.c as a separate process and therefore cannot make use
* of the PDB. Anyway shouldn't we just move this as a utils function?
* Why does such basic feature as opening a URL in a cross-platform way
* need to be a plug-in?
*/
static gboolean
browser_open_url (const gchar *url,
GError **error)
{
#ifdef G_OS_WIN32
HINSTANCE hinst = ShellExecute (GetDesktopWindow(),
"open", url, NULL, NULL, SW_SHOW);
if ((gint) hinst <= 32)
{
const gchar *err;
switch ((gint) hinst)
{
case 0 :
err = _("The operating system is out of memory or resources.");
break;
case ERROR_FILE_NOT_FOUND :
err = _("The specified file was not found.");
break;
case ERROR_PATH_NOT_FOUND :
err = _("The specified path was not found.");
break;
case ERROR_BAD_FORMAT :
err = _("The .exe file is invalid (non-Microsoft Win32 .exe or error in .exe image).");
break;
case SE_ERR_ACCESSDENIED :
err = _("The operating system denied access to the specified file.");
break;
case SE_ERR_ASSOCINCOMPLETE :
err = _("The file name association is incomplete or invalid.");
break;
case SE_ERR_DDEBUSY :
err = _("DDE transaction busy");
break;
case SE_ERR_DDEFAIL :
err = _("The DDE transaction failed.");
break;
case SE_ERR_DDETIMEOUT :
err = _("The DDE transaction timed out.");
break;
case SE_ERR_DLLNOTFOUND :
err = _("The specified DLL was not found.");
break;
case SE_ERR_NOASSOC :
err = _("There is no application associated with the given file name extension.");
break;
case SE_ERR_OOM :
err = _("There was not enough memory to complete the operation.");
break;
case SE_ERR_SHARE:
err = _("A sharing violation occurred.");
break;
default :
err = _("Unknown Microsoft Windows error.");
}
g_set_error (error, 0, 0, _("Failed to open '%s': %s"), url, err);
return FALSE;
}
return TRUE;
#elif defined(PLATFORM_OSX)
NSURL *ns_url;
gboolean retval;
@autoreleasepool
{
ns_url = [NSURL URLWithString: [NSString stringWithUTF8String: url]];
retval = [[NSWorkspace sharedWorkspace] openURL: ns_url];
}
return retval;
#else
return gtk_show_uri (gdk_screen_get_default (),
url,
gtk_get_current_event_time(),
error);
#endif
}
static void
gimp_critical_dialog_response (GtkDialog *dialog,
gint response_id)
......@@ -207,10 +315,7 @@ gimp_critical_dialog_response (GtkDialog *dialog,
* much time digging into it.
*/
url = "https://bugzilla.gnome.org/enter_bug.cgi?product=GIMP";
gtk_show_uri (gdk_screen_get_default (),
url,
gtk_get_current_event_time(),
NULL);
browser_open_url (url, NULL);
}
break;
case GIMP_CRITICAL_RESPONSE_RESTART:
......@@ -218,6 +323,10 @@ gimp_critical_dialog_response (GtkDialog *dialog,
gchar *args[2] = { critical->program , NULL };
#ifndef G_OS_WIN32
/* It is unneeded to kill the process on Win32. This was run
* as an async call and the main process should already be
* dead by now.
*/
if (critical->pid > 0)
kill ((pid_t ) critical->pid, SIGINT);
#endif
......
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