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-rw-r--r--src/menu/gl_delayed_allocation.cpp94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/menu/gl_delayed_allocation.cpp b/src/menu/gl_delayed_allocation.cpp
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+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "gl_delayed_allocation.hpp"
+#include "application.hpp"
+
+namespace usdx
+{
+ log4cpp::Category& GlDelayedAllocation::log =
+ log4cpp::Category::getInstance("usdx.menu.gl_delayed_allocation");
+
+ GlDelayedAllocation::GlDelayedAllocation()
+ : initialized(false), end_of_life(false)
+ {
+ }
+
+ GlDelayedAllocation::~GlDelayedAllocation()
+ {
+ boost::shared_lock<boost::shared_mutex> lock(initialized_mutex);
+ if (initialized) {
+ log << log4cpp::Priority::ERROR << "You forgot to call dispose, "
+ << "before destroying an object with GlDelayedAllocation";
+ }
+ }
+
+ void GlDelayedAllocation::do_dispose(void)
+ {
+ boost::upgrade_lock<boost::shared_mutex> initialized_lock(initialized_mutex);
+ if (initialized) {
+ {
+ boost::unique_lock<boost::shared_mutex> end_of_life_lock(end_of_life_mutex);
+ end_of_life = true;
+ }
+
+ if (Application::is_gl_thread()) {
+ this->gl_cleanup();
+
+ boost::upgrade_to_unique_lock<boost::shared_mutex> unique_lock(initialized_lock);
+ initialized = false;
+ }
+ else {
+ dispose_done.wait(initialized_lock);
+ }
+ }
+ }
+
+ void GlDelayedAllocation::enable(void)
+ {
+ boost::upgrade_lock<boost::shared_mutex> initialized_lock(initialized_mutex);
+ if (!initialized) {
+ this->gl_initialize();
+
+ boost::upgrade_to_unique_lock<boost::shared_mutex> unique_lock(initialized_lock);
+ initialized = true;
+ }
+ }
+
+ void GlDelayedAllocation::disable(void)
+ {
+ boost::upgrade_lock<boost::shared_mutex> initialized_lock(initialized_mutex);
+ boost::upgrade_lock<boost::shared_mutex> end_of_life_lock(end_of_life_mutex);
+ if (initialized && end_of_life) {
+ this->gl_cleanup();
+
+ {
+ boost::upgrade_to_unique_lock<boost::shared_mutex> unique_lock(initialized_lock);
+ initialized = false;
+ }
+
+ dispose_done.notify_all();
+ }
+ }
+};