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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /ipc/glue/BackgroundParent.h
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ipc/glue/BackgroundParent.h')
-rw-r--r--ipc/glue/BackgroundParent.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/ipc/glue/BackgroundParent.h b/ipc/glue/BackgroundParent.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_ipc_backgroundparent_h__
+#define mozilla_ipc_backgroundparent_h__
+
+#include "base/process.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/ContentParent.h"
+#include "nsStringFwd.h"
+#include "nsTArrayForwardDeclare.h"
+
+#ifdef DEBUG
+# include "nsXULAppAPI.h"
+#endif
+
+template <class>
+struct already_AddRefed;
+
+namespace mozilla {
+
+namespace net {
+
+class SocketProcessBridgeParent;
+class SocketProcessParent;
+
+} // namespace net
+
+namespace dom {
+
+class BlobImpl;
+class ContentParent;
+
+} // namespace dom
+
+namespace ipc {
+
+class BackgroundStarterParent;
+class PBackgroundParent;
+class PBackgroundStarterParent;
+
+template <class PFooSide>
+class Endpoint;
+
+// This class is not designed for public consumption beyond the few static
+// member functions.
+class BackgroundParent final {
+ friend class mozilla::ipc::BackgroundStarterParent;
+ friend class mozilla::dom::ContentParent;
+ friend class mozilla::net::SocketProcessBridgeParent;
+ friend class mozilla::net::SocketProcessParent;
+
+ using ProcessId = base::ProcessId;
+ using BlobImpl = mozilla::dom::BlobImpl;
+ using ContentParent = mozilla::dom::ContentParent;
+ using ThreadsafeContentParentHandle =
+ mozilla::dom::ThreadsafeContentParentHandle;
+
+ public:
+ // This function allows the caller to determine if the given parent actor
+ // corresponds to a child actor from another process or a child actor from a
+ // different thread in the same process.
+ // This function may only be called on the background thread.
+ static bool IsOtherProcessActor(PBackgroundParent* aBackgroundActor);
+
+ // This function returns a handle to the ContentParent associated with the
+ // parent actor if the parent actor corresponds to a child actor from another
+ // content process. If the parent actor corresponds to a child actor from a
+ // different thread in the same process then this function returns null.
+ //
+ // This function may only be called on the background thread.
+ static ThreadsafeContentParentHandle* GetContentParentHandle(
+ PBackgroundParent* aBackgroundActor);
+
+ static uint64_t GetChildID(PBackgroundParent* aBackgroundActor);
+
+ private:
+ // Only called by ContentParent for cross-process actors.
+ static bool AllocStarter(ContentParent* aContent,
+ Endpoint<PBackgroundStarterParent>&& aEndpoint);
+
+ // Called by SocketProcessBridgeParent and SocketProcessParent for
+ // cross-process actors.
+ static bool AllocStarter(Endpoint<PBackgroundStarterParent>&& aEndpoint);
+};
+
+// Implemented in BackgroundImpl.cpp.
+bool IsOnBackgroundThread();
+
+#ifdef DEBUG
+
+// Implemented in BackgroundImpl.cpp.
+void AssertIsOnBackgroundThread();
+
+#else
+
+inline void AssertIsOnBackgroundThread() {}
+
+#endif // DEBUG
+
+inline void AssertIsInMainProcess() { MOZ_ASSERT(XRE_IsParentProcess()); }
+
+inline void AssertIsInMainOrSocketProcess() {
+ MOZ_ASSERT(XRE_IsParentProcess() || XRE_IsSocketProcess());
+}
+
+} // namespace ipc
+} // namespace mozilla
+
+#endif // mozilla_ipc_backgroundparent_h__