gecko/dom/plugins/ipc/PluginMessageUtils.cpp

178 lines
4.5 KiB
C++

/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8; -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Content App.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "PluginMessageUtils.h"
#include "nsIRunnable.h"
#include "nsThreadUtils.h"
#include "PluginInstanceParent.h"
#include "PluginInstanceChild.h"
#include "PluginScriptableObjectParent.h"
#include "PluginScriptableObjectChild.h"
using std::string;
using mozilla::ipc::RPCChannel;
namespace {
class DeferNPObjectReleaseRunnable : public nsRunnable
{
public:
DeferNPObjectReleaseRunnable(const NPNetscapeFuncs* f, NPObject* o)
: mFuncs(f)
, mObject(o)
{
NS_ASSERTION(o, "no release null objects");
}
NS_IMETHOD Run();
private:
const NPNetscapeFuncs* mFuncs;
NPObject* mObject;
};
NS_IMETHODIMP
DeferNPObjectReleaseRunnable::Run()
{
mFuncs->releaseobject(mObject);
return NS_OK;
}
} // anonymous namespace
namespace mozilla {
namespace plugins {
RPCChannel::RacyRPCPolicy
MediateRace(const RPCChannel::Message& parent,
const RPCChannel::Message& child)
{
switch (parent.type()) {
case PPluginInstance::Msg_Paint__ID:
case PPluginInstance::Msg_NPP_SetWindow__ID:
case PPluginInstance::Msg_NPP_HandleEvent_Shmem__ID:
case PPluginInstance::Msg_NPP_HandleEvent_IOSurface__ID:
// our code relies on the frame list not changing during paints and
// reflows
return RPCChannel::RRPParentWins;
default:
return RPCChannel::RRPChildWins;
}
}
static string
ReplaceAll(const string& haystack, const string& needle, const string& with)
{
string munged = haystack;
string::size_type i = 0;
while (string::npos != (i = munged.find(needle, i))) {
munged.replace(i, needle.length(), with);
i += with.length();
}
return munged;
}
string
MungePluginDsoPath(const string& path)
{
#if defined(OS_LINUX)
// https://bugzilla.mozilla.org/show_bug.cgi?id=519601
return ReplaceAll(path, "netscape", "netsc@pe");
#else
return path;
#endif
}
string
UnmungePluginDsoPath(const string& munged)
{
#if defined(OS_LINUX)
return ReplaceAll(munged, "netsc@pe", "netscape");
#else
return munged;
#endif
}
PRLogModuleInfo* gPluginLog = PR_NewLogModule("IPCPlugins");
void
DeferNPObjectLastRelease(const NPNetscapeFuncs* f, NPObject* o)
{
if (!o)
return;
if (o->referenceCount > 1) {
f->releaseobject(o);
return;
}
NS_DispatchToCurrentThread(new DeferNPObjectReleaseRunnable(f, o));
}
void DeferNPVariantLastRelease(const NPNetscapeFuncs* f, NPVariant* v)
{
if (!NPVARIANT_IS_OBJECT(*v)) {
f->releasevariantvalue(v);
return;
}
DeferNPObjectLastRelease(f, v->value.objectValue);
VOID_TO_NPVARIANT(*v);
}
#ifdef XP_WIN
// The private event used for double-pass widgetless plugin rendering.
UINT DoublePassRenderingEvent()
{
static UINT gEventID = 0;
if (!gEventID)
gEventID = ::RegisterWindowMessage(L"MozDoublePassMsg");
return gEventID;
}
#endif
} // namespace plugins
} // namespace mozilla