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gecko/toolkit/xre/nsEmbedFunctions.cpp
Benjamin Smedberg c4141662bb Bug 516515 - Don't initialize XPCOM in plugin processes, r=cjones 
--HG--
rename : ipc/glue/GeckoThread.cpp => ipc/glue/MozillaChildThread.cpp
rename : ipc/glue/GeckoThread.h => ipc/glue/MozillaChildThread.h
2010-01-31 22:19:21 -05:00

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/* ***** 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 libXUL embedding.
*
* The Initial Developer of the Original Code is
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* Portions created by the Initial Developer are Copyright (C) 2005
* the Mozilla Foundation. 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 ***** */
#ifdef MOZ_IPC
#include "base/basictypes.h"
#endif
#include "nsXULAppAPI.h"
#include <stdlib.h>
#if defined(MOZ_WIDGET_GTK2)
#include <glib.h>
#endif
#include "prenv.h"
#include "nsIAppShell.h"
#include "nsIAppStartupNotifier.h"
#include "nsIDirectoryService.h"
#include "nsILocalFile.h"
#include "nsIToolkitChromeRegistry.h"
#include "nsIToolkitProfile.h"
#if defined(OS_LINUX)
# define XP_LINUX
#endif
#ifdef XP_WIN
#include <process.h>
#endif
#include "nsAppDirectoryServiceDefs.h"
#include "nsAppRunner.h"
#include "nsAutoRef.h"
#include "nsDirectoryServiceDefs.h"
#include "nsExceptionHandler.h"
#include "nsStaticComponents.h"
#include "nsString.h"
#include "nsThreadUtils.h"
#include "nsWidgetsCID.h"
#include "nsXPFEComponentsCID.h"
#include "nsXREDirProvider.h"
#ifdef MOZ_IPC
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/message_loop.h"
#include "base/process_util.h"
#include "chrome/common/child_process.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
#include "mozilla/ipc/BrowserProcessSubThread.h"
#include "ScopedXREEmbed.h"
#include "mozilla/plugins/PluginThreadChild.h"
#include "mozilla/dom/ContentProcessThread.h"
#include "mozilla/dom/ContentProcessParent.h"
#include "mozilla/dom/ContentProcessChild.h"
#include "mozilla/ipc/TestShellParent.h"
#include "mozilla/ipc/XPCShellEnvironment.h"
#include "mozilla/Monitor.h"
#ifdef MOZ_IPDL_TESTS
#include "mozilla/_ipdltest/IPDLUnitTests.h"
#include "mozilla/_ipdltest/IPDLUnitTestThreadChild.h"
using mozilla::_ipdltest::IPDLUnitTestThreadChild;
#endif // ifdef MOZ_IPDL_TESTS
using mozilla::ipc::GeckoChildProcessHost;
using mozilla::ipc::BrowserProcessSubThread;
using mozilla::ipc::ScopedXREEmbed;
using mozilla::plugins::PluginThreadChild;
using mozilla::dom::ContentProcessThread;
using mozilla::dom::ContentProcessParent;
using mozilla::dom::ContentProcessChild;
using mozilla::ipc::TestShellParent;
using mozilla::ipc::TestShellCommandParent;
using mozilla::ipc::XPCShellEnvironment;
using mozilla::Monitor;
using mozilla::MonitorAutoEnter;
using mozilla::startup::sChildProcessType;
#endif
static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
void
XRE_GetStaticComponents(nsStaticModuleInfo const **aStaticComponents,
PRUint32 *aComponentCount)
{
*aStaticComponents = kPStaticModules;
*aComponentCount = kStaticModuleCount;
}
nsresult
XRE_LockProfileDirectory(nsILocalFile* aDirectory,
nsISupports* *aLockObject)
{
nsCOMPtr<nsIProfileLock> lock;
nsresult rv = NS_LockProfilePath(aDirectory, nsnull, nsnull,
getter_AddRefs(lock));
if (NS_SUCCEEDED(rv))
NS_ADDREF(*aLockObject = lock);
return rv;
}
static nsStaticModuleInfo *sCombined;
static PRInt32 sInitCounter;
nsresult
XRE_InitEmbedding(nsILocalFile *aLibXULDirectory,
nsILocalFile *aAppDirectory,
nsIDirectoryServiceProvider *aAppDirProvider,
nsStaticModuleInfo const *aStaticComponents,
PRUint32 aStaticComponentCount)
{
// Initialize some globals to make nsXREDirProvider happy
static char* kNullCommandLine[] = { nsnull };
gArgv = kNullCommandLine;
gArgc = 0;
NS_ENSURE_ARG(aLibXULDirectory);
if (++sInitCounter > 1) // XXXbsmedberg is this really the right solution?
return NS_OK;
if (!aAppDirectory)
aAppDirectory = aLibXULDirectory;
nsresult rv;
new nsXREDirProvider; // This sets gDirServiceProvider
if (!gDirServiceProvider)
return NS_ERROR_OUT_OF_MEMORY;
rv = gDirServiceProvider->Initialize(aAppDirectory, aLibXULDirectory,
aAppDirProvider);
if (NS_FAILED(rv))
return rv;
// Combine the toolkit static components and the app components.
PRUint32 combinedCount = kStaticModuleCount + aStaticComponentCount;
sCombined = new nsStaticModuleInfo[combinedCount];
if (!sCombined)
return NS_ERROR_OUT_OF_MEMORY;
memcpy(sCombined, kPStaticModules,
sizeof(nsStaticModuleInfo) * kStaticModuleCount);
memcpy(sCombined + kStaticModuleCount, aStaticComponents,
sizeof(nsStaticModuleInfo) * aStaticComponentCount);
rv = NS_InitXPCOM3(nsnull, aAppDirectory, gDirServiceProvider,
sCombined, combinedCount);
if (NS_FAILED(rv))
return rv;
// We do not need to autoregister components here. The CheckUpdateFile()
// bits in NS_InitXPCOM3 check for an .autoreg file. If the app wants
// to autoregister every time (for instance, if it's debug), it can do
// so after we return from this function.
nsCOMPtr<nsIObserver> startupNotifier
(do_CreateInstance(NS_APPSTARTUPNOTIFIER_CONTRACTID));
if (!startupNotifier)
return NS_ERROR_FAILURE;
startupNotifier->Observe(nsnull, APPSTARTUP_TOPIC, nsnull);
return NS_OK;
}
void
XRE_NotifyProfile()
{
NS_ASSERTION(gDirServiceProvider, "XRE_InitEmbedding was not called!");
gDirServiceProvider->DoStartup();
}
void
XRE_TermEmbedding()
{
if (--sInitCounter != 0)
return;
NS_ASSERTION(gDirServiceProvider,
"XRE_TermEmbedding without XRE_InitEmbedding");
gDirServiceProvider->DoShutdown();
NS_ShutdownXPCOM(nsnull);
delete [] sCombined;
delete gDirServiceProvider;
}
const char*
XRE_ChildProcessTypeToString(GeckoProcessType aProcessType)
{
return (aProcessType < GeckoProcessType_End) ?
kGeckoProcessTypeString[aProcessType] : nsnull;
}
GeckoProcessType
XRE_StringToChildProcessType(const char* aProcessTypeString)
{
for (int i = 0;
i < (int) NS_ARRAY_LENGTH(kGeckoProcessTypeString);
++i) {
if (!strcmp(kGeckoProcessTypeString[i], aProcessTypeString)) {
return static_cast<GeckoProcessType>(i);
}
}
return GeckoProcessType_Invalid;
}
#ifdef MOZ_IPC
namespace mozilla {
namespace startup {
GeckoProcessType sChildProcessType = GeckoProcessType_Default;
}
}
static MessageLoop* sIOMessageLoop;
#if defined(MOZ_CRASHREPORTER)
// FIXME/bug 539522: this out-of-place function is stuck here because
// IPDL wants access to this crashreporter interface, and
// crashreporter is built in such a way to make that awkward
PRBool
XRE_GetMinidumpForChild(PRUint32 aChildPid, nsIFile** aDump)
{
return CrashReporter::GetMinidumpForChild(aChildPid, aDump);
}
PRBool
XRE_SetRemoteExceptionHandler(const char* aPipe/*= 0*/)
{
#if defined(XP_WIN)
return CrashReporter::SetRemoteExceptionHandler(nsDependentCString(aPipe));
#elif defined(OS_LINUX)
return CrashReporter::SetRemoteExceptionHandler();
#else
# error "OOP crash reporter unsupported on this platform"
#endif
}
#endif // if defined(MOZ_CRASHREPORTER)
nsresult
XRE_InitChildProcess(int aArgc,
char* aArgv[],
GeckoProcessType aProcess)
{
NS_ENSURE_ARG_MIN(aArgc, 2);
NS_ENSURE_ARG_POINTER(aArgv);
NS_ENSURE_ARG_POINTER(aArgv[0]);
sChildProcessType = aProcess;
gArgv = aArgv;
gArgc = aArgc;
SetupErrorHandling(aArgv[0]);
#if defined(MOZ_WIDGET_GTK2)
g_thread_init(NULL);
#endif
if (PR_GetEnv("MOZ_DEBUG_CHILD_PROCESS")) {
#ifdef OS_POSIX
printf("\n\nCHILDCHILDCHILDCHILD\n debug me @%d\n\n", getpid());
sleep(30);
#elif defined(OS_WIN)
printf("\n\nCHILDCHILDCHILDCHILD\n debug me @%d\n\n", _getpid());
Sleep(30000);
#endif
}
// child processes launched by GeckoChildProcessHost get this magic
// argument appended to their command lines
const char* const parentPIDString = aArgv[aArgc-1];
NS_ABORT_IF_FALSE(parentPIDString, "NULL parent PID");
--aArgc;
char* end = 0;
base::ProcessId parentPID = strtol(parentPIDString, &end, 10);
NS_ABORT_IF_FALSE(!*end, "invalid parent PID");
base::ProcessHandle parentHandle;
bool ok = base::OpenProcessHandle(parentPID, &parentHandle);
NS_ABORT_IF_FALSE(ok, "can't open handle to parent");
base::AtExitManager exitManager;
NS_LogInit();
int rv = XRE_InitCommandLine(aArgc, aArgv);
if (NS_FAILED(rv)) {
NS_LogTerm();
return NS_ERROR_FAILURE;
}
MessageLoopForIO mainMessageLoop;
{
ChildThread* mainThread;
switch (aProcess) {
case GeckoProcessType_Default:
NS_RUNTIMEABORT("This makes no sense");
break;
case GeckoProcessType_Plugin:
mainThread = new PluginThreadChild(parentHandle);
break;
case GeckoProcessType_Content:
mainThread = new ContentProcessThread(parentHandle);
break;
case GeckoProcessType_IPDLUnitTest:
#ifdef MOZ_IPDL_TESTS
mainThread = new IPDLUnitTestThreadChild(parentHandle);
#else
NS_RUNTIMEABORT("rebuild with --enable-ipdl-tests");
#endif
break;
default:
NS_RUNTIMEABORT("Unknown main thread class");
}
ChildProcess process(mainThread);
// Do IPC event loop
sIOMessageLoop = MessageLoop::current();
sIOMessageLoop->Run();
sIOMessageLoop = nsnull;
}
NS_LogTerm();
return XRE_DeinitCommandLine();
}
MessageLoop*
XRE_GetIOMessageLoop()
{
if (sChildProcessType == GeckoProcessType_Default) {
NS_ASSERTION(!sIOMessageLoop, "Shouldn't be set on parent process!");
return BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO);
}
return sIOMessageLoop;
}
namespace {
class MainFunctionRunnable : public nsRunnable
{
public:
NS_DECL_NSIRUNNABLE
MainFunctionRunnable(MainFunction aFunction,
void* aData)
: mFunction(aFunction),
mData(aData)
{
NS_ASSERTION(aFunction, "Don't give me a null pointer!");
}
private:
MainFunction mFunction;
void* mData;
};
} /* anonymous namespace */
NS_IMETHODIMP
MainFunctionRunnable::Run()
{
mFunction(mData);
return NS_OK;
}
nsresult
XRE_InitParentProcess(int aArgc,
char* aArgv[],
MainFunction aMainFunction,
void* aMainFunctionData)
{
NS_ENSURE_ARG_MIN(aArgc, 1);
NS_ENSURE_ARG_POINTER(aArgv);
NS_ENSURE_ARG_POINTER(aArgv[0]);
int rv = XRE_InitCommandLine(aArgc, aArgv);
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
ScopedXREEmbed embed;
{
embed.Start();
nsCOMPtr<nsIAppShell> appShell(do_GetService(kAppShellCID));
NS_ENSURE_TRUE(appShell, NS_ERROR_FAILURE);
if (aMainFunction) {
nsCOMPtr<nsIRunnable> runnable =
new MainFunctionRunnable(aMainFunction, aMainFunctionData);
NS_ENSURE_TRUE(runnable, NS_ERROR_OUT_OF_MEMORY);
nsresult rv = NS_DispatchToCurrentThread(runnable);
NS_ENSURE_SUCCESS(rv, rv);
}
// Do event loop
if (NS_FAILED(appShell->Run())) {
NS_WARNING("Failed to run appshell");
return NS_ERROR_FAILURE;
}
}
return XRE_DeinitCommandLine();
}
#ifdef MOZ_IPDL_TESTS
//-----------------------------------------------------------------------------
// IPDL unit test
int
XRE_RunIPDLTest(int aArgc, char** aArgv)
{
if (aArgc < 2) {
fprintf(stderr, "TEST-UNEXPECTED-FAIL | <---> | insufficient #args, need at least 2\n");
return 1;
}
void* data = reinterpret_cast<void*>(aArgv[aArgc-1]);
nsresult rv =
XRE_InitParentProcess(
--aArgc, aArgv, mozilla::_ipdltest::IPDLUnitTestMain, data);
NS_ENSURE_SUCCESS(rv, 1);
return 0;
}
#endif // ifdef MOZ_IPDL_TESTS
nsresult
XRE_RunAppShell()
{
nsCOMPtr<nsIAppShell> appShell(do_GetService(kAppShellCID));
NS_ENSURE_TRUE(appShell, NS_ERROR_FAILURE);
return appShell->Run();
}
template<>
struct RunnableMethodTraits<ContentProcessChild>
{
static void RetainCallee(ContentProcessChild* obj) { }
static void ReleaseCallee(ContentProcessChild* obj) { }
};
void
XRE_ShutdownChildProcess()
{
NS_ABORT_IF_FALSE(MessageLoopForUI::current(), "Wrong thread!");
MessageLoop* ioLoop = XRE_GetIOMessageLoop();
NS_ABORT_IF_FALSE(!!ioLoop, "Bad shutdown order");
ioLoop->PostTask(FROM_HERE, new MessageLoop::QuitTask());
}
namespace {
TestShellParent* gTestShellParent = nsnull;
}
bool
XRE_SendTestShellCommand(JSContext* aCx,
JSString* aCommand,
void* aCallback)
{
if (!gTestShellParent) {
ContentProcessParent* parent = ContentProcessParent::GetSingleton();
NS_ENSURE_TRUE(parent, false);
gTestShellParent = parent->CreateTestShell();
NS_ENSURE_TRUE(gTestShellParent, false);
}
nsDependentString command((PRUnichar*)JS_GetStringChars(aCommand),
JS_GetStringLength(aCommand));
if (!aCallback) {
return gTestShellParent->SendExecuteCommand(command);
}
TestShellCommandParent* callback = static_cast<TestShellCommandParent*>(
gTestShellParent->SendPTestShellCommandConstructor(command));
NS_ENSURE_TRUE(callback, false);
jsval callbackVal = *reinterpret_cast<jsval*>(aCallback);
NS_ENSURE_TRUE(callback->SetCallback(aCx, callbackVal), false);
return true;
}
bool
XRE_ShutdownTestShell()
{
if (!gTestShellParent)
return true;
return ContentProcessParent::GetSingleton()->DestroyTestShell(gTestShellParent);
}
#endif // MOZ_IPC
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