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/*
* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/desktop_capture/linux/x_error_trap.h"
#include <assert.h>
#include <stddef.h>
#if defined(TOOLKIT_GTK)
#include <gdk/gdk.h>
#endif // !defined(TOOLKIT_GTK)
namespace webrtc {
namespace {
#if !defined(TOOLKIT_GTK)
// TODO(sergeyu): This code is not thread safe. Fix it. Bug 2202.
static bool g_xserver_error_trap_enabled = false;
static int g_last_xserver_error_code = 0;
int XServerErrorHandler(Display* display, XErrorEvent* error_event) {
assert(g_xserver_error_trap_enabled);
g_last_xserver_error_code = error_event->error_code;
return 0;
}
#endif // !defined(TOOLKIT_GTK)
} // namespace
XErrorTrap::XErrorTrap(Display* display)
: original_error_handler_(NULL), enabled_(true) {
#if defined(TOOLKIT_GTK)
gdk_error_trap_push();
#else // !defined(TOOLKIT_GTK)
assert(!g_xserver_error_trap_enabled);
original_error_handler_ = XSetErrorHandler(&XServerErrorHandler);
g_xserver_error_trap_enabled = true;
g_last_xserver_error_code = 0;
#endif // !defined(TOOLKIT_GTK)
}
int XErrorTrap::GetLastErrorAndDisable() {
enabled_ = false;
#if defined(TOOLKIT_GTK)
return gdk_error_trap_push();
#else // !defined(TOOLKIT_GTK)
assert(g_xserver_error_trap_enabled);
XSetErrorHandler(original_error_handler_);
g_xserver_error_trap_enabled = false;
return g_last_xserver_error_code;
#endif // !defined(TOOLKIT_GTK)
}
XErrorTrap::~XErrorTrap() {
if (enabled_)
GetLastErrorAndDisable();
}
} // namespace webrtc
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