summaryrefslogtreecommitdiffstats
path: root/dom/media/ipc/ShmemRecycleAllocator.h
diff options
context:
space:
mode:
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 /dom/media/ipc/ShmemRecycleAllocator.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 'dom/media/ipc/ShmemRecycleAllocator.h')
-rw-r--r--dom/media/ipc/ShmemRecycleAllocator.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/dom/media/ipc/ShmemRecycleAllocator.h b/dom/media/ipc/ShmemRecycleAllocator.h
new file mode 100644
index 0000000000..7207e27014
--- /dev/null
+++ b/dom/media/ipc/ShmemRecycleAllocator.h
@@ -0,0 +1,60 @@
+/* -*- 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 include_dom_media_ipc_ShmemRecycleAllocator_h
+#define include_dom_media_ipc_ShmemRecycleAllocator_h
+
+#include "mozilla/ShmemPool.h"
+
+namespace mozilla {
+
+template <class T>
+class ShmemRecycleAllocator {
+ public:
+ explicit ShmemRecycleAllocator(T* aActor)
+ : mActor(aActor), mPool(1, ShmemPool::PoolType::DynamicPool) {}
+ ShmemBuffer AllocateBuffer(size_t aSize,
+ ShmemPool::AllocationPolicy aPolicy =
+ ShmemPool::AllocationPolicy::Unsafe) {
+ ShmemBuffer buffer = mPool.Get(mActor, aSize, aPolicy);
+ if (!buffer.Valid()) {
+ return buffer;
+ }
+ MOZ_DIAGNOSTIC_ASSERT(aSize <= buffer.Get().Size<uint8_t>());
+ mUsedShmems.AppendElement(buffer.Get());
+ mNeedCleanup = true;
+ return buffer;
+ }
+
+ void ReleaseBuffer(ShmemBuffer&& aBuffer) { mPool.Put(std::move(aBuffer)); }
+
+ void ReleaseAllBuffers() {
+ for (auto&& mem : mUsedShmems) {
+ ReleaseBuffer(ShmemBuffer(mem.Get()));
+ }
+ mUsedShmems.Clear();
+ }
+
+ void CleanupShmemRecycleAllocator() {
+ ReleaseAllBuffers();
+ mPool.Cleanup(mActor);
+ mNeedCleanup = false;
+ }
+
+ ~ShmemRecycleAllocator() {
+ MOZ_DIAGNOSTIC_ASSERT(mUsedShmems.IsEmpty() && !mNeedCleanup,
+ "Shmems not all deallocated");
+ }
+
+ private:
+ T* const mActor;
+ ShmemPool mPool;
+ AutoTArray<ShmemBuffer, 4> mUsedShmems;
+ bool mNeedCleanup = false;
+};
+
+} // namespace mozilla
+
+#endif // include_dom_media_ipc_ShmemRecycleAllocator_h