mirror of
https://github.com/mozilla/gecko-dev.git
synced 2025-01-05 15:59:45 +00:00
db0019c058
IPCBlobInputStream is a new type of nsIInputStream that is used only in content process when a Blob is sent from parent to child. This inputStream is for now, just cloneable. When the parent process sends a Blob to a content process, it has the Blob and its inputStream. With its inputStream it creates a IPCBlobInputStreamParent actor. This actor keeps the inputStream alive for following uses (not part of this patch). On the child side we will have, of course, a IPCBlobInputStreamChild actor. This actor is able to create a IPCBlobInputStream when CreateStream() is called. This means that 1 IPCBlobInputStreamChild can manage multiple IPCBlobInputStreams each time one of them is cloned. When the last one of this stream is released, the child actor sends a __delete__ request to the parent side; the parent will be deleted, and the original inputStream, on the parent side, will be released as well. IPCBlobInputStream is a special inputStream because each method, except for Available() fails. Basically, this inputStream cannot be used on the content process for nothing else than knowing the size of the original stream. In the following patches, I'll introduce an async way to use it.
93 lines
2.9 KiB
Plaintext
93 lines
2.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=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/. */
|
|
|
|
include protocol PBlob;
|
|
include protocol PBrowser;
|
|
include protocol PContent;
|
|
include protocol PJavaScript;
|
|
include protocol PFileDescriptorSet;
|
|
include protocol PChildToParentStream;
|
|
include protocol PMemoryStream;
|
|
include protocol PParentToChildStream;
|
|
include protocol PIPCBlobInputStream;
|
|
|
|
include DOMTypes;
|
|
include JavaScriptTypes;
|
|
include ProtocolTypes;
|
|
include PTabContext;
|
|
|
|
using class IPC::Principal from "mozilla/dom/PermissionMessageUtils.h";
|
|
using mozilla::dom::TabId from "mozilla/dom/ipc/IdType.h";
|
|
using mozilla::dom::ContentParentId from "mozilla/dom/ipc/IdType.h";
|
|
using class mozilla::dom::MessagePort from "mozilla/dom/MessagePort.h";
|
|
using class mozilla::dom::ipc::StructuredCloneData from "mozilla/dom/ipc/StructuredCloneData.h";
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
/*
|
|
* PContentBridge allows us to represent a parent/child relationship between two
|
|
* child processes. When a child process wants to open its own child, it asks
|
|
* the root process to create a new process and then bridge them. The first
|
|
* child will allocate the PContentBridgeParent, and the newly opened child will
|
|
* allocate the PContentBridgeChild. This protocol allows these processes to
|
|
* share PBrowsers and send messages to each other.
|
|
*/
|
|
nested(upto inside_cpow) sync protocol PContentBridge
|
|
{
|
|
manages PBlob;
|
|
manages PBrowser;
|
|
manages PFileDescriptorSet;
|
|
manages PJavaScript;
|
|
manages PChildToParentStream;
|
|
manages PMemoryStream;
|
|
manages PParentToChildStream;
|
|
manages PIPCBlobInputStream;
|
|
|
|
child:
|
|
async PParentToChildStream();
|
|
|
|
child:
|
|
/**
|
|
* Sending an activate message moves focus to the child.
|
|
*/
|
|
async Activate(PBrowser aTab);
|
|
|
|
async Deactivate(PBrowser aTab);
|
|
|
|
async ParentActivated(PBrowser aTab, bool aActivated);
|
|
|
|
async PIPCBlobInputStream(nsID aID, uint64_t aSize);
|
|
|
|
parent:
|
|
sync SyncMessage(nsString aMessage, ClonedMessageData aData,
|
|
CpowEntry[] aCpows, Principal aPrincipal)
|
|
returns (StructuredCloneData[] retval);
|
|
|
|
async PJavaScript();
|
|
|
|
async PChildToParentStream();
|
|
|
|
async PMemoryStream(uint64_t aSize);
|
|
|
|
both:
|
|
// Both the parent and the child can construct the PBrowser.
|
|
// See the comment in PContent::PBrowser().
|
|
async PBrowser(TabId tabId, TabId sameTabGroupAs,
|
|
IPCTabContext context, uint32_t chromeFlags,
|
|
ContentParentId cpId, bool isForBrowser);
|
|
|
|
async PBlob(BlobConstructorParams params);
|
|
|
|
async PFileDescriptorSet(FileDescriptor fd);
|
|
|
|
async AsyncMessage(nsString aMessage, CpowEntry[] aCpows,
|
|
Principal aPrincipal, ClonedMessageData aData);
|
|
};
|
|
|
|
}
|
|
}
|