gecko-dev/dom/locks/LockManagerParent.h
Nika Layzell 9919099425 Bug 1738734 - Directly pass around handles rather than using TransportDescriptor, r=jld,media-playback-reviewers,alwu
This simplifies the logic around descriptors significantly, which is
especially useful considering how few places use the type. There is a
small change required on Windows to create the NamedPipe directly and
transfer around each end's handle, rather than connecting between
processes after the fact.

A named pipe has to be used, rather than an anonymous pipe, as
bidirectional communication is required.

Differential Revision: https://phabricator.services.mozilla.com/D130381
2022-02-08 23:53:45 +00:00

63 lines
1.9 KiB
C++

/* -*- 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 DOM_LOCKS_LOCKMANAGERPARENT_H_
#define DOM_LOCKS_LOCKMANAGERPARENT_H_
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/dom/locks/PLockManagerParent.h"
#include "mozilla/dom/locks/LockRequestParent.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "mozilla/WeakPtr.h"
namespace mozilla::dom::locks {
class ManagedLocks : public SupportsWeakPtr {
public:
NS_INLINE_DECL_REFCOUNTING(ManagedLocks)
nsTArray<RefPtr<LockRequestParent>> mHeldLocks;
nsTHashMap<nsStringHashKey, nsTArray<RefPtr<LockRequestParent>>> mQueueMap;
private:
~ManagedLocks() = default;
};
class LockManagerParent final : public PLockManagerParent {
using IPCResult = mozilla::ipc::IPCResult;
public:
NS_INLINE_DECL_REFCOUNTING(LockManagerParent)
LockManagerParent(const mozilla::ipc::ContentPrincipalInfo& aPrincipalInfo,
const nsID& aClientId);
void ProcessRequestQueue(nsTArray<RefPtr<LockRequestParent>>& aQueue);
bool IsGrantableRequest(const IPCLockRequest& aRequest);
IPCResult RecvQuery(QueryResolver&& aResolver);
already_AddRefed<PLockRequestParent> AllocPLockRequestParent(
const IPCLockRequest& aRequest);
IPCResult RecvPLockRequestConstructor(PLockRequestParent* aActor,
const IPCLockRequest& aRequest) final;
ManagedLocks& Locks() { return *mManagedLocks; }
private:
~LockManagerParent() = default;
void ActorDestroy(ActorDestroyReason aWhy) final;
RefPtr<ManagedLocks> mManagedLocks;
nsString mClientId;
mozilla::ipc::ContentPrincipalInfo mPrincipalInfo;
};
} // namespace mozilla::dom::locks
#endif // DOM_LOCKS_LOCKMANAGERPARENT_H_