101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsGDKErrorHandler.h"
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#include <gtk/gtk.h>
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#include <gdk/gdkx.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "nsDebug.h"
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#include "nsString.h"
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#include "nsX11ErrorHandler.h"
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#include "prenv.h"
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/* See https://bugzilla.gnome.org/show_bug.cgi?id=629608#c8
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*
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* GDK implements X11 error traps to ignore X11 errors.
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* Unfortunatelly We don't know which X11 events can be ignored
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* so we have to utilize the Gdk error handler to avoid
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* false alarms in Gtk3.
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*/
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static void
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GdkErrorHandler(const gchar *log_domain, GLogLevelFlags log_level,
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const gchar *message, gpointer user_data)
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{
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if (strstr(message, "X Window System error")) {
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XErrorEvent event;
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nsDependentCString buffer(message);
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char *endptr;
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/* Parse Gdk X Window error message which has this format:
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* (Details: serial XXXX error_code XXXX request_code XXXX (XXXX) minor_code XXXX)
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*/
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NS_NAMED_LITERAL_CSTRING(serialString, "(Details: serial ");
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int32_t start = buffer.Find(serialString);
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if (start == kNotFound)
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NS_RUNTIMEABORT(message);
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start += serialString.Length();
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errno = 0;
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event.serial = strtol(buffer.BeginReading() + start, &endptr, 10);
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if (errno)
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NS_RUNTIMEABORT(message);
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NS_NAMED_LITERAL_CSTRING(errorCodeString, " error_code ");
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if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), errorCodeString))
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NS_RUNTIMEABORT(message);
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errno = 0;
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event.error_code = strtol(endptr + errorCodeString.Length(), &endptr, 10);
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if (errno)
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NS_RUNTIMEABORT(message);
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NS_NAMED_LITERAL_CSTRING(requestCodeString, " request_code ");
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if (!StringBeginsWith(Substring(endptr, buffer.EndReading()), requestCodeString))
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NS_RUNTIMEABORT(message);
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errno = 0;
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event.request_code = strtol(endptr + requestCodeString.Length(), &endptr, 10);
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if (errno)
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NS_RUNTIMEABORT(message);
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NS_NAMED_LITERAL_CSTRING(minorCodeString, " minor_code ");
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start = buffer.Find(minorCodeString, endptr - buffer.BeginReading());
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if (!start)
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NS_RUNTIMEABORT(message);
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errno = 0;
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event.minor_code = strtol(buffer.BeginReading() + start + minorCodeString.Length(), nullptr, 10);
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if (errno)
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NS_RUNTIMEABORT(message);
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event.display = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
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// Gdk does not provide resource ID
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event.resourceid = 0;
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X11Error(event.display, &event);
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} else {
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g_log_default_handler(log_domain, log_level, message, user_data);
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NS_RUNTIMEABORT(message);
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}
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}
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void
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InstallGdkErrorHandler()
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{
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g_log_set_handler("Gdk",
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(GLogLevelFlags)(G_LOG_LEVEL_ERROR | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION),
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GdkErrorHandler,
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nullptr);
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if (PR_GetEnv("MOZ_X_SYNC")) {
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XSynchronize(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), True);
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}
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}
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