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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/2d/CriticalSection.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/2d/CriticalSection.h')
-rw-r--r--gfx/2d/CriticalSection.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/gfx/2d/CriticalSection.h b/gfx/2d/CriticalSection.h
new file mode 100644
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+++ b/gfx/2d/CriticalSection.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_CRITICALSECTION_H_
+#define MOZILLA_GFX_CRITICALSECTION_H_
+
+#ifdef WIN32
+# include <windows.h>
+#else
+# include <pthread.h>
+# include "mozilla/DebugOnly.h"
+#endif
+
+namespace mozilla {
+namespace gfx {
+
+#ifdef WIN32
+
+class CriticalSection {
+ public:
+ CriticalSection() { ::InitializeCriticalSection(&mCriticalSection); }
+
+ ~CriticalSection() { ::DeleteCriticalSection(&mCriticalSection); }
+
+ void Enter() { ::EnterCriticalSection(&mCriticalSection); }
+
+ void Leave() { ::LeaveCriticalSection(&mCriticalSection); }
+
+ protected:
+ CRITICAL_SECTION mCriticalSection;
+};
+
+#else
+// posix
+
+class PosixCondvar;
+class CriticalSection {
+ public:
+ CriticalSection() {
+ DebugOnly<int> err = pthread_mutex_init(&mMutex, nullptr);
+ MOZ_ASSERT(!err);
+ }
+
+ ~CriticalSection() {
+ DebugOnly<int> err = pthread_mutex_destroy(&mMutex);
+ MOZ_ASSERT(!err);
+ }
+
+ void Enter() {
+ DebugOnly<int> err = pthread_mutex_lock(&mMutex);
+ MOZ_ASSERT(!err);
+ }
+
+ void Leave() {
+ DebugOnly<int> err = pthread_mutex_unlock(&mMutex);
+ MOZ_ASSERT(!err);
+ }
+
+ protected:
+ pthread_mutex_t mMutex;
+ friend class PosixCondVar;
+};
+
+#endif
+
+/// RAII helper.
+struct CriticalSectionAutoEnter final {
+ explicit CriticalSectionAutoEnter(CriticalSection* aSection)
+ : mSection(aSection) {
+ mSection->Enter();
+ }
+ ~CriticalSectionAutoEnter() { mSection->Leave(); }
+
+ protected:
+ CriticalSection* mSection;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif