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RetroZilla/js/src/xpconnect/src/nsXPConnect.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** 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 Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* John Bandhauer <jband@netscape.com> (original author)
* Pierre Phaneuf <pp@ludusdesign.com>
* Nate Nielsen <nielsen@memberwebs.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/* High level class and public functions implementation. */
#include "xpcprivate.h"
#include "XPCNativeWrapper.h"
NS_IMPL_THREADSAFE_ISUPPORTS5(nsXPConnect,
nsIXPConnect,
nsIXPConnect_MOZILLA_1_8_BRANCH,
nsIXPConnect_MOZILLA_1_8_BRANCH2,
nsISupportsWeakReference,
nsIEventQueueListener)
nsXPConnect* nsXPConnect::gSelf = nsnull;
JSBool nsXPConnect::gOnceAliveNowDead = JS_FALSE;
PRThread* nsXPConnect::gMainThread = nsnull;
const char XPC_CONTEXT_STACK_CONTRACTID[] = "@mozilla.org/js/xpc/ContextStack;1";
const char XPC_RUNTIME_CONTRACTID[] = "@mozilla.org/js/xpc/RuntimeService;1";
const char XPC_EXCEPTION_CONTRACTID[] = "@mozilla.org/js/xpc/Exception;1";
const char XPC_CONSOLE_CONTRACTID[] = "@mozilla.org/consoleservice;1";
const char XPC_SCRIPT_ERROR_CONTRACTID[] = "@mozilla.org/scripterror;1";
const char XPC_ID_CONTRACTID[] = "@mozilla.org/js/xpc/ID;1";
const char XPC_XPCONNECT_CONTRACTID[] = "@mozilla.org/js/xpc/XPConnect;1";
/***************************************************************************/
nsXPConnect::nsXPConnect()
: mRuntime(nsnull),
mInterfaceInfoManager(nsnull),
mContextStack(nsnull),
mDefaultSecurityManager(nsnull),
mDefaultSecurityManagerFlags(0),
mShuttingDown(JS_FALSE)
{
// Ignore the result. If the runtime service is not ready to rumble
// then we'll set this up later as needed.
CreateRuntime();
nsCOMPtr<nsIInterfaceInfoManager> iim =
dont_AddRef(XPTI_GetInterfaceInfoManager());
CallQueryInterface(iim, &mInterfaceInfoManager);
CallGetService(XPC_CONTEXT_STACK_CONTRACTID, &mContextStack);
#ifdef XPC_TOOLS_SUPPORT
{
char* filename = PR_GetEnv("MOZILLA_JS_PROFILER_OUTPUT");
if(filename && *filename)
{
mProfilerOutputFile = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID);
if(mProfilerOutputFile &&
NS_SUCCEEDED(mProfilerOutputFile->InitWithNativePath(nsDependentCString(filename))))
{
mProfiler = do_GetService(XPCTOOLS_PROFILER_CONTRACTID);
if(mProfiler)
{
if(NS_SUCCEEDED(mProfiler->Start()))
{
#ifdef DEBUG
printf("***** profiling JavaScript. Output to: %s\n",
filename);
#endif
}
}
}
}
}
#endif
}
nsXPConnect::~nsXPConnect()
{
// XXX It would be nice if we could get away with doing a GC here and also
// calling Release on the natives no longer reachable via XPConnect. As
// noted all over the place, this makes bad things happen since shutdown is
// an unstable time for so many modules who have not planned well for it.
mShuttingDown = JS_TRUE;
{ // scoped callcontext
XPCCallContext ccx(NATIVE_CALLER);
if(ccx.IsValid())
{
XPCWrappedNativeScope::SystemIsBeingShutDown(ccx);
if(mRuntime)
mRuntime->SystemIsBeingShutDown(&ccx);
}
}
NS_IF_RELEASE(mInterfaceInfoManager);
NS_IF_RELEASE(mContextStack);
NS_IF_RELEASE(mDefaultSecurityManager);
// Unfortunately calling CleanupAllThreads before the stuff above
// (esp. SystemIsBeingShutDown) causes too many bad things to happen
// as the Release calls propagate. See the comment in this function in
// revision 1.35 of this file.
//
// I filed a bug on xpcom regarding the bad things that happen
// if people try to create components during shutdown.
// http://bugzilla.mozilla.org/show_bug.cgi?id=37058
//
// Also, we just plain need the context stack for at least the current
// thread to be in place. Unfortunately, this will leak stuff on the
// stacks' safeJSContexts. But, this is a shutdown leak only.
XPCPerThreadData::CleanupAllThreads();
// shutdown the logging system
XPC_LOG_FINISH();
delete mRuntime;
gSelf = nsnull;
gOnceAliveNowDead = JS_TRUE;
}
// static
nsXPConnect*
nsXPConnect::GetXPConnect()
{
if(!gSelf)
{
if(gOnceAliveNowDead)
return nsnull;
gSelf = new nsXPConnect();
if(!gSelf)
return nsnull;
if(!gSelf->mInterfaceInfoManager ||
!gSelf->mContextStack)
{
// ctor failed to create an acceptable instance
delete gSelf;
gSelf = nsnull;
}
else
{
// Initial extra ref to keep the singleton alive
// balanced by explicit call to ReleaseXPConnectSingleton()
NS_ADDREF(gSelf);
}
}
return gSelf;
}
// In order to enable this jsgc heap dumping you need to compile
// _both_ js/src/jsgc.c and this file with 'GC_MARK_DEBUG' #defined.
// Normally this is done by adding -DGC_MARK_DEBUG to the appropriate
// defines lists in the makefiles.
#ifdef GC_MARK_DEBUG
extern "C" JS_FRIEND_DATA(FILE *) js_DumpGCHeap;
#endif
// static
nsXPConnect*
nsXPConnect::GetSingleton()
{
nsXPConnect* xpc = nsXPConnect::GetXPConnect();
NS_IF_ADDREF(xpc);
return xpc;
}
// static
void
nsXPConnect::ReleaseXPConnectSingleton()
{
nsXPConnect* xpc = gSelf;
if(xpc)
{
#ifdef XPC_TOOLS_SUPPORT
if(xpc->mProfiler)
{
xpc->mProfiler->Stop();
xpc->mProfiler->WriteResults(xpc->mProfilerOutputFile);
}
#endif
#ifdef GC_MARK_DEBUG
// force a dump of the JavaScript gc heap if JS is still alive
XPCCallContext ccx(NATIVE_CALLER);
if(ccx.IsValid())
{
FILE* oldFileHandle = js_DumpGCHeap;
js_DumpGCHeap = stdout;
JS_GC(ccx);
js_DumpGCHeap = oldFileHandle;
}
#endif
#ifdef XPC_DUMP_AT_SHUTDOWN
// NOTE: to see really interesting stuff turn on the prlog stuff.
// See the comment at the top of xpclog.h to see how to do that.
xpc->DebugDump(7);
#endif
nsrefcnt cnt;
NS_RELEASE2(xpc, cnt);
#ifdef XPC_DUMP_AT_SHUTDOWN
if(0 != cnt)
printf("*** dangling reference to nsXPConnect: refcnt=%d\n", cnt);
else
printf("+++ XPConnect had no dangling references.\n");
#endif
}
}
// static
nsresult
nsXPConnect::GetInterfaceInfoManager(nsIInterfaceInfoSuperManager** iim,
nsXPConnect* xpc /*= nsnull*/)
{
if(!xpc && !(xpc = GetXPConnect()))
return NS_ERROR_FAILURE;
*iim = xpc->mInterfaceInfoManager;
NS_IF_ADDREF(*iim);
return NS_OK;
}
// static
nsresult
nsXPConnect::GetContextStack(nsIThreadJSContextStack** stack,
nsXPConnect* xpc /*= nsnull*/)
{
nsIThreadJSContextStack* temp;
if(!xpc && !(xpc = GetXPConnect()))
return NS_ERROR_FAILURE;
*stack = temp = xpc->mContextStack;
NS_IF_ADDREF(temp);
return NS_OK;
}
// static
XPCJSRuntime*
nsXPConnect::GetRuntime(nsXPConnect* xpc /*= nsnull*/)
{
if(!xpc && !(xpc = GetXPConnect()))
return nsnull;
return xpc->EnsureRuntime() ? xpc->mRuntime : nsnull;
}
// static
nsIJSRuntimeService*
nsXPConnect::GetJSRuntimeService(nsXPConnect* xpc /* = nsnull */)
{
XPCJSRuntime* rt = GetRuntime(xpc);
return rt ? rt->GetJSRuntimeService() : nsnull;
}
// static
XPCContext*
nsXPConnect::GetContext(JSContext* cx, nsXPConnect* xpc /*= nsnull*/)
{
NS_PRECONDITION(cx,"bad param");
XPCJSRuntime* rt = GetRuntime(xpc);
if(!rt)
return nsnull;
if(rt->GetJSRuntime() != JS_GetRuntime(cx))
{
NS_WARNING("XPConnect was passed aJSContext from a foreign JSRuntime!");
return nsnull;
}
return rt->GetXPCContext(cx);
}
// static
JSBool
nsXPConnect::IsISupportsDescendant(nsIInterfaceInfo* info)
{
PRBool found = PR_FALSE;
if(info)
info->HasAncestor(&NS_GET_IID(nsISupports), &found);
return found;
}
JSBool
nsXPConnect::CreateRuntime()
{
NS_ASSERTION(!mRuntime,"CreateRuntime called but mRuntime already init'd");
nsresult rv;
nsCOMPtr<nsIJSRuntimeService> rtsvc =
do_GetService(XPC_RUNTIME_CONTRACTID, &rv);
if(NS_SUCCEEDED(rv) && rtsvc)
{
mRuntime = XPCJSRuntime::newXPCJSRuntime(this, rtsvc);
}
return nsnull != mRuntime;
}
// static
PRThread*
nsXPConnect::FindMainThread()
{
nsCOMPtr<nsIThread> t;
nsresult rv;
rv = nsIThread::GetMainThread(getter_AddRefs(t));
NS_ASSERTION(NS_SUCCEEDED(rv) && t, "bad");
rv = t->GetPRThread(&gMainThread);
NS_ASSERTION(NS_SUCCEEDED(rv) && gMainThread, "bad");
return gMainThread;
}
/***************************************************************************/
typedef PRBool (*InfoTester)(nsIInterfaceInfoManager* manager, const void* data,
nsIInterfaceInfo** info);
static PRBool IIDTester(nsIInterfaceInfoManager* manager, const void* data,
nsIInterfaceInfo** info)
{
return NS_SUCCEEDED(manager->GetInfoForIID((const nsIID *) data, info)) &&
*info;
}
static PRBool NameTester(nsIInterfaceInfoManager* manager, const void* data,
nsIInterfaceInfo** info)
{
return NS_SUCCEEDED(manager->GetInfoForName((const char *) data, info)) &&
*info;
}
static nsresult FindInfo(InfoTester tester, const void* data,
nsIInterfaceInfoSuperManager* iism,
nsIInterfaceInfo** info)
{
if(tester(iism, data, info))
return NS_OK;
// If not found, then let's ask additional managers.
PRBool yes;
nsCOMPtr<nsISimpleEnumerator> list;
if(NS_SUCCEEDED(iism->HasAdditionalManagers(&yes)) && yes &&
NS_SUCCEEDED(iism->EnumerateAdditionalManagers(getter_AddRefs(list))) &&
list)
{
PRBool more;
nsCOMPtr<nsIInterfaceInfoManager> current;
while(NS_SUCCEEDED(list->HasMoreElements(&more)) && more &&
NS_SUCCEEDED(list->GetNext(getter_AddRefs(current))) && current)
{
if(tester(current, data, info))
return NS_OK;
}
}
return NS_ERROR_NO_INTERFACE;
}
nsresult
nsXPConnect::GetInfoForIID(const nsIID * aIID, nsIInterfaceInfo** info)
{
return FindInfo(IIDTester, aIID, mInterfaceInfoManager, info);
}
nsresult
nsXPConnect::GetInfoForName(const char * name, nsIInterfaceInfo** info)
{
return FindInfo(NameTester, name, mInterfaceInfoManager, info);
}
/***************************************************************************/
/***************************************************************************/
// nsIXPConnect interface methods...
inline nsresult UnexpectedFailure(nsresult rv)
{
NS_ERROR("This is not supposed to fail!");
return rv;
}
class SaveFrame
{
public:
SaveFrame(JSContext *cx)
: mJSContext(cx) {
mFrame = JS_SaveFrameChain(mJSContext);
}
~SaveFrame() {
JS_RestoreFrameChain(mJSContext, mFrame);
}
private:
JSContext *mJSContext;
JSStackFrame *mFrame;
};
/* void initClasses (in JSContextPtr aJSContext, in JSObjectPtr aGlobalJSObj); */
NS_IMETHODIMP
nsXPConnect::InitClasses(JSContext * aJSContext, JSObject * aGlobalJSObj)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aGlobalJSObj, "bad param");
SaveFrame sf(aJSContext);
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
if(!xpc_InitJSxIDClassObjects())
return UnexpectedFailure(NS_ERROR_FAILURE);
if(!xpc_InitWrappedNativeJSOps())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::GetNewOrUsed(ccx, aGlobalJSObj);
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
scope->RemoveWrappedNativeProtos();
if(!nsXPCComponents::AttachNewComponentsObject(ccx, scope, aGlobalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
#ifdef XPC_IDISPATCH_SUPPORT
// Initialize any properties IDispatch needs on the global object
XPCIDispatchExtension::Initialize(ccx, aGlobalJSObj);
#endif
if (!XPCNativeWrapper::AttachNewConstructorObject(ccx, aGlobalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
return NS_OK;
}
JS_STATIC_DLL_CALLBACK(JSBool)
TempGlobalResolve(JSContext *aJSContext, JSObject *obj, jsval id)
{
JSBool resolved;
return JS_ResolveStandardClass(aJSContext, obj, id, &resolved);
}
static JSClass xpcTempGlobalClass = {
"xpcTempGlobalClass", 0,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
JS_EnumerateStub, TempGlobalResolve, JS_ConvertStub, JS_FinalizeStub,
JSCLASS_NO_OPTIONAL_MEMBERS
};
/* nsIXPConnectJSObjectHolder initClassesWithNewWrappedGlobal (in JSContextPtr aJSContext, in nsISupports aCOMObj, in nsIIDRef aIID, in PRUint32 aFlags); */
NS_IMETHODIMP
nsXPConnect::InitClassesWithNewWrappedGlobal(JSContext * aJSContext,
nsISupports *aCOMObj,
const nsIID & aIID,
PRUint32 aFlags,
nsIXPConnectJSObjectHolder **_retval)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aCOMObj, "bad param");
NS_ASSERTION(_retval, "bad param");
// XXX This is not pretty. We make a temporary global object and
// init it with all the Components object junk just so we have a
// parent with an xpc scope to use when wrapping the object that will
// become the 'real' global.
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
JSObject* tempGlobal = JS_NewObject(aJSContext, &xpcTempGlobalClass,
nsnull, nsnull);
if(!tempGlobal ||
!JS_SetParent(aJSContext, tempGlobal, nsnull) ||
!JS_SetPrototype(aJSContext, tempGlobal, nsnull))
return UnexpectedFailure(NS_ERROR_FAILURE);
if(aFlags & nsIXPConnect::FLAG_SYSTEM_GLOBAL_OBJECT)
JS_FlagSystemObject(aJSContext, tempGlobal);
nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
{
// Scope for our auto-marker; it just needs to keep tempGlobal alive
// long enough for InitClasses and WrapNative to do their work
AUTO_MARK_JSVAL(ccx, OBJECT_TO_JSVAL(tempGlobal));
if(NS_FAILED(InitClasses(aJSContext, tempGlobal)))
return UnexpectedFailure(NS_ERROR_FAILURE);
nsresult rv;
if(!XPCConvert::NativeInterface2JSObject(ccx, getter_AddRefs(holder),
aCOMObj, &aIID, tempGlobal,
PR_FALSE, OBJ_IS_GLOBAL, &rv))
return UnexpectedFailure(rv);
NS_ASSERTION(NS_SUCCEEDED(rv) && holder, "Didn't wrap properly");
}
JSObject* globalJSObj;
if(NS_FAILED(holder->GetJSObject(&globalJSObj)) || !globalJSObj)
return UnexpectedFailure(NS_ERROR_FAILURE);
if(aFlags & nsIXPConnect::FLAG_SYSTEM_GLOBAL_OBJECT)
NS_ASSERTION(JS_IsSystemObject(aJSContext, globalJSObj), "huh?!");
// voodoo to fixup scoping and parenting...
JS_SetParent(aJSContext, globalJSObj, nsnull);
JSObject* oldGlobal = JS_GetGlobalObject(aJSContext);
if(!oldGlobal || oldGlobal == tempGlobal)
JS_SetGlobalObject(aJSContext, globalJSObj);
if((aFlags & nsIXPConnect::INIT_JS_STANDARD_CLASSES) &&
!JS_InitStandardClasses(aJSContext, globalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNative* wrapper =
NS_REINTERPRET_CAST(XPCWrappedNative*, holder.get());
XPCWrappedNativeScope* scope = wrapper->GetScope();
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
NS_ASSERTION(scope->GetGlobalJSObject() == tempGlobal, "stealing scope!");
scope->SetGlobal(ccx, globalJSObj);
JSObject* protoJSObject = wrapper->HasProto() ?
wrapper->GetProto()->GetJSProtoObject() :
globalJSObj;
if(protoJSObject)
{
if(protoJSObject != globalJSObj)
JS_SetParent(aJSContext, protoJSObject, globalJSObj);
JS_SetPrototype(aJSContext, protoJSObject, scope->GetPrototypeJSObject());
}
SaveFrame sf(ccx);
if(!nsXPCComponents::AttachNewComponentsObject(ccx, scope, globalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
if (!XPCNativeWrapper::AttachNewConstructorObject(ccx, globalJSObj))
return UnexpectedFailure(NS_ERROR_FAILURE);
NS_ADDREF(*_retval = holder);
return NS_OK;
}
/* nsIXPConnectJSObjectHolder wrapNative (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsISupports aCOMObj, in nsIIDRef aIID); */
NS_IMETHODIMP
nsXPConnect::WrapNative(JSContext * aJSContext,
JSObject * aScope,
nsISupports *aCOMObj,
const nsIID & aIID,
nsIXPConnectJSObjectHolder **_retval)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aScope, "bad param");
NS_ASSERTION(aCOMObj, "bad param");
NS_ASSERTION(_retval, "bad param");
*_retval = nsnull;
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
nsresult rv;
if(!XPCConvert::NativeInterface2JSObject(ccx, _retval, aCOMObj, &aIID,
aScope, PR_FALSE,
OBJ_IS_NOT_GLOBAL, &rv))
return rv;
#ifdef DEBUG
JSObject* returnObj;
(*_retval)->GetJSObject(&returnObj);
NS_ASSERTION(!XPCNativeWrapper::IsNativeWrapper(aJSContext, returnObj),
"Shouldn't be returning a native wrapper here");
#endif
return NS_OK;
}
/* void wrapJS (in JSContextPtr aJSContext, in JSObjectPtr aJSObj, in nsIIDRef aIID, [iid_is (aIID), retval] out nsQIResult result); */
NS_IMETHODIMP
nsXPConnect::WrapJS(JSContext * aJSContext,
JSObject * aJSObj,
const nsIID & aIID,
void * *result)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aJSObj, "bad param");
NS_ASSERTION(result, "bad param");
*result = nsnull;
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
nsresult rv;
if(!XPCConvert::JSObject2NativeInterface(ccx, result, aJSObj,
&aIID, nsnull, &rv))
return rv;
return NS_OK;
}
/* void wrapJSAggregatedToNative (in nsISupports aOuter, in JSContextPtr aJSContext, in JSObjectPtr aJSObj, in nsIIDRef aIID, [iid_is (aIID), retval] out nsQIResult result); */
NS_IMETHODIMP
nsXPConnect::WrapJSAggregatedToNative(nsISupports *aOuter,
JSContext * aJSContext,
JSObject * aJSObj,
const nsIID & aIID,
void * *result)
{
NS_ASSERTION(aOuter, "bad param");
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aJSObj, "bad param");
NS_ASSERTION(result, "bad param");
*result = nsnull;
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
nsresult rv;
if(!XPCConvert::JSObject2NativeInterface(ccx, result, aJSObj,
&aIID, aOuter, &rv))
return rv;
return NS_OK;
}
/* nsIXPConnectWrappedNative getWrappedNativeOfJSObject (in JSContextPtr aJSContext, in JSObjectPtr aJSObj); */
NS_IMETHODIMP
nsXPConnect::GetWrappedNativeOfJSObject(JSContext * aJSContext,
JSObject * aJSObj,
nsIXPConnectWrappedNative **_retval)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aJSObj, "bad param");
NS_ASSERTION(_retval, "bad param");
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
nsIXPConnectWrappedNative* wrapper =
XPCWrappedNative::GetWrappedNativeOfJSObject(aJSContext, aJSObj);
if(wrapper)
{
NS_ADDREF(wrapper);
*_retval = wrapper;
return NS_OK;
}
// else...
*_retval = nsnull;
return NS_ERROR_FAILURE;
}
/* nsIXPConnectWrappedNative getWrappedNativeOfNativeObject (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsISupports aCOMObj, in nsIIDRef aIID); */
NS_IMETHODIMP
nsXPConnect::GetWrappedNativeOfNativeObject(JSContext * aJSContext,
JSObject * aScope,
nsISupports *aCOMObj,
const nsIID & aIID,
nsIXPConnectWrappedNative **_retval)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aScope, "bad param");
NS_ASSERTION(aCOMObj, "bad param");
NS_ASSERTION(_retval, "bad param");
*_retval = nsnull;
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aScope);
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
AutoMarkingNativeInterfacePtr iface(ccx);
iface = XPCNativeInterface::GetNewOrUsed(ccx, &aIID);
if(!iface)
return NS_ERROR_FAILURE;
XPCWrappedNative* wrapper;
nsresult rv = XPCWrappedNative::GetUsedOnly(ccx, aCOMObj, scope, iface,
&wrapper);
if(NS_FAILED(rv))
return NS_ERROR_FAILURE;
*_retval = NS_STATIC_CAST(nsIXPConnectWrappedNative*, wrapper);
return NS_OK;
}
/* nsIXPConnectJSObjectHolder reparentWrappedNativeIfFound (in JSContextPtr aJSContext, in JSObjectPtr aScope, in JSObjectPtr aNewParent, in nsISupports aCOMObj); */
NS_IMETHODIMP
nsXPConnect::ReparentWrappedNativeIfFound(JSContext * aJSContext,
JSObject * aScope,
JSObject * aNewParent,
nsISupports *aCOMObj,
nsIXPConnectJSObjectHolder **_retval)
{
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aScope);
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope* scope2 =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aNewParent);
if(!scope2)
return UnexpectedFailure(NS_ERROR_FAILURE);
return XPCWrappedNative::
ReparentWrapperIfFound(ccx, scope, scope2, aNewParent, aCOMObj,
(XPCWrappedNative**) _retval);
}
JS_STATIC_DLL_CALLBACK(JSDHashOperator)
MoveableWrapperFinder(JSDHashTable *table, JSDHashEntryHdr *hdr,
uint32 number, void *arg)
{
// Every element counts.
nsVoidArray *va = NS_STATIC_CAST(nsVoidArray *,arg);
va->AppendElement(((Native2WrappedNativeMap::Entry*)hdr)->value);
return JS_DHASH_NEXT;
}
/* void moveWrappers(in JSContextPtr aJSContext, in JSObjectPtr aOldScope, in JSObjectPtr aNewScope); */
NS_IMETHODIMP
nsXPConnect::MoveWrappers(JSContext *aJSContext,
JSObject *aOldScope,
JSObject *aNewScope)
{
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope *oldScope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aOldScope);
if(!oldScope)
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope *newScope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aNewScope);
if(!newScope)
return UnexpectedFailure(NS_ERROR_FAILURE);
{ // scoped lock
XPCAutoLock lock(oldScope->GetRuntime()->GetMapLock());
// First, look through the old scope and find all of the wrappers that
// we're going to move.
Native2WrappedNativeMap *map = oldScope->GetWrappedNativeMap();
nsVoidArray wrappersToMove(map->Count());
map->Enumerate(MoveableWrapperFinder, &wrappersToMove);
// Now that we have the wrappers, reparent them to the new scope.
for(PRInt32 i = 0, stop = wrappersToMove.Count(); i < stop; ++i)
{
// First, check to see if this wrapper really needs to be
// reparented.
XPCWrappedNative *wrapper =
NS_STATIC_CAST(XPCWrappedNative *, wrappersToMove[i]);
nsISupports *identity = wrapper->GetIdentityObject();
nsCOMPtr<nsIClassInfo> info(do_QueryInterface(identity));
// ClassInfo is implemented as singleton objects. If the identity
// object here is the same object as returned by the QI, then it
// is the singleton classinfo, so we don't need to reparent it.
if(SameCOMIdentity(identity, info))
info = nsnull;
if(!info)
continue;
XPCNativeScriptableCreateInfo sciProto;
XPCNativeScriptableCreateInfo sciWrapper;
nsresult rv =
XPCWrappedNative::GatherScriptableCreateInfo(identity,
info.get(),
&sciProto,
&sciWrapper);
if(NS_FAILED(rv))
return NS_ERROR_FAILURE;
JSObject *newParent = aOldScope;
// If the wrapper doesn't want precreate, then we don't need to
// worry about reparenting it.
if(!sciWrapper.GetFlags().WantPreCreate())
continue;
rv = sciWrapper.GetCallback()->PreCreate(identity, ccx, aOldScope,
&newParent);
if(NS_FAILED(rv))
return rv;
if(newParent == aOldScope)
{
// The old scope still works for this wrapper. We have to assume
// that the wrapper will continue to return the old scope from
// PreCreate, so don't move it.
continue;
}
// The wrapper returned a new parent. If the new parent is in
// a different scope, then we need to reparent it, otherwise,
// the old scope is fine.
XPCWrappedNativeScope *betterScope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, newParent);
if(betterScope == oldScope)
{
// The wrapper asked for a different object, but that object
// was in the same scope. We assume here that the new parent
// simply hasn't been reparented yet.
newParent = nsnull;
}
else
NS_ASSERTION(betterScope == newScope, "Weird scope returned");
// Now, reparent the wrapper, since we know that it wants to be
// reparented.
nsRefPtr<XPCWrappedNative> junk;
rv = XPCWrappedNative::ReparentWrapperIfFound(ccx, oldScope,
newScope, newParent,
wrapper->GetIdentityObject(),
getter_AddRefs(junk));
NS_ENSURE_SUCCESS(rv, rv);
}
}
return NS_OK;
}
/* void setSecurityManagerForJSContext (in JSContextPtr aJSContext, in nsIXPCSecurityManager aManager, in PRUint16 flags); */
NS_IMETHODIMP
nsXPConnect::SetSecurityManagerForJSContext(JSContext * aJSContext,
nsIXPCSecurityManager *aManager,
PRUint16 flags)
{
NS_ASSERTION(aJSContext, "bad param");
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCContext* xpcc = ccx.GetXPCContext();
NS_IF_ADDREF(aManager);
nsIXPCSecurityManager* oldManager = xpcc->GetSecurityManager();
NS_IF_RELEASE(oldManager);
xpcc->SetSecurityManager(aManager);
xpcc->SetSecurityManagerFlags(flags);
return NS_OK;
}
/* void getSecurityManagerForJSContext (in JSContextPtr aJSContext, out nsIXPCSecurityManager aManager, out PRUint16 flags); */
NS_IMETHODIMP
nsXPConnect::GetSecurityManagerForJSContext(JSContext * aJSContext,
nsIXPCSecurityManager **aManager,
PRUint16 *flags)
{
NS_ASSERTION(aJSContext, "bad param");
NS_ASSERTION(aManager, "bad param");
NS_ASSERTION(flags, "bad param");
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCContext* xpcc = ccx.GetXPCContext();
nsIXPCSecurityManager* manager = xpcc->GetSecurityManager();
NS_IF_ADDREF(manager);
*aManager = manager;
*flags = xpcc->GetSecurityManagerFlags();
return NS_OK;
}
/* void setDefaultSecurityManager (in nsIXPCSecurityManager aManager, in PRUint16 flags); */
NS_IMETHODIMP
nsXPConnect::SetDefaultSecurityManager(nsIXPCSecurityManager *aManager,
PRUint16 flags)
{
NS_IF_ADDREF(aManager);
NS_IF_RELEASE(mDefaultSecurityManager);
mDefaultSecurityManager = aManager;
mDefaultSecurityManagerFlags = flags;
return NS_OK;
}
/* void getDefaultSecurityManager (out nsIXPCSecurityManager aManager, out PRUint16 flags); */
NS_IMETHODIMP
nsXPConnect::GetDefaultSecurityManager(nsIXPCSecurityManager **aManager,
PRUint16 *flags)
{
NS_ASSERTION(aManager, "bad param");
NS_ASSERTION(flags, "bad param");
NS_IF_ADDREF(mDefaultSecurityManager);
*aManager = mDefaultSecurityManager;
*flags = mDefaultSecurityManagerFlags;
return NS_OK;
}
/* nsIStackFrame createStackFrameLocation (in PRUint32 aLanguage, in string aFilename, in string aFunctionName, in PRInt32 aLineNumber, in nsIStackFrame aCaller); */
NS_IMETHODIMP
nsXPConnect::CreateStackFrameLocation(PRUint32 aLanguage,
const char *aFilename,
const char *aFunctionName,
PRInt32 aLineNumber,
nsIStackFrame *aCaller,
nsIStackFrame **_retval)
{
NS_ASSERTION(_retval, "bad param");
return XPCJSStack::CreateStackFrameLocation(aLanguage,
aFilename,
aFunctionName,
aLineNumber,
aCaller,
_retval);
}
/* readonly attribute nsIStackFrame CurrentJSStack; */
NS_IMETHODIMP
nsXPConnect::GetCurrentJSStack(nsIStackFrame * *aCurrentJSStack)
{
NS_ASSERTION(aCurrentJSStack, "bad param");
*aCurrentJSStack = nsnull;
JSContext* cx;
// is there a current context available?
if(mContextStack && NS_SUCCEEDED(mContextStack->Peek(&cx)) && cx)
{
nsCOMPtr<nsIStackFrame> stack;
XPCJSStack::CreateStack(cx, getter_AddRefs(stack));
if(stack)
{
// peel off native frames...
PRUint32 language;
nsCOMPtr<nsIStackFrame> caller;
while(stack &&
NS_SUCCEEDED(stack->GetLanguage(&language)) &&
language != nsIProgrammingLanguage::JAVASCRIPT &&
NS_SUCCEEDED(stack->GetCaller(getter_AddRefs(caller))) &&
caller)
{
stack = caller;
}
NS_IF_ADDREF(*aCurrentJSStack = stack);
}
}
return NS_OK;
}
/* readonly attribute nsIXPCNativeCallContext CurrentNativeCallContext; */
NS_IMETHODIMP
nsXPConnect::GetCurrentNativeCallContext(nsIXPCNativeCallContext * *aCurrentNativeCallContext)
{
NS_ASSERTION(aCurrentNativeCallContext, "bad param");
XPCPerThreadData* data = XPCPerThreadData::GetData();
if(data)
{
nsIXPCNativeCallContext* temp = data->GetCallContext();
NS_IF_ADDREF(temp);
*aCurrentNativeCallContext = temp;
return NS_OK;
}
//else...
*aCurrentNativeCallContext = nsnull;
return UnexpectedFailure(NS_ERROR_FAILURE);
}
/* attribute nsIException PendingException; */
NS_IMETHODIMP
nsXPConnect::GetPendingException(nsIException * *aPendingException)
{
NS_ASSERTION(aPendingException, "bad param");
XPCPerThreadData* data = XPCPerThreadData::GetData();
if(!data)
{
*aPendingException = nsnull;
return UnexpectedFailure(NS_ERROR_FAILURE);
}
return data->GetException(aPendingException);
}
NS_IMETHODIMP
nsXPConnect::SetPendingException(nsIException * aPendingException)
{
XPCPerThreadData* data = XPCPerThreadData::GetData();
if(!data)
return UnexpectedFailure(NS_ERROR_FAILURE);
data->SetException(aPendingException);
return NS_OK;
}
/* void syncJSContexts (); */
NS_IMETHODIMP
nsXPConnect::SyncJSContexts(void)
{
XPCJSRuntime* rt = GetRuntime(this);
if(rt)
rt->SyncXPCContextList();
return NS_OK;
}
/* nsIXPCFunctionThisTranslator setFunctionThisTranslator (in nsIIDRef aIID, in nsIXPCFunctionThisTranslator aTranslator); */
NS_IMETHODIMP
nsXPConnect::SetFunctionThisTranslator(const nsIID & aIID,
nsIXPCFunctionThisTranslator *aTranslator,
nsIXPCFunctionThisTranslator **_retval)
{
XPCJSRuntime* rt = GetRuntime(this);
if(!rt)
return NS_ERROR_UNEXPECTED;
nsIXPCFunctionThisTranslator* old;
IID2ThisTranslatorMap* map = rt->GetThisTranslatorMap();
{
XPCAutoLock lock(rt->GetMapLock()); // scoped lock
if(_retval)
{
old = map->Find(aIID);
NS_IF_ADDREF(old);
*_retval = old;
}
map->Add(aIID, aTranslator);
}
return NS_OK;
}
/* nsIXPCFunctionThisTranslator getFunctionThisTranslator (in nsIIDRef aIID); */
NS_IMETHODIMP
nsXPConnect::GetFunctionThisTranslator(const nsIID & aIID,
nsIXPCFunctionThisTranslator **_retval)
{
XPCJSRuntime* rt = GetRuntime(this);
if(!rt)
return NS_ERROR_UNEXPECTED;
nsIXPCFunctionThisTranslator* old;
IID2ThisTranslatorMap* map = rt->GetThisTranslatorMap();
{
XPCAutoLock lock(rt->GetMapLock()); // scoped lock
old = map->Find(aIID);
NS_IF_ADDREF(old);
*_retval = old;
}
return NS_OK;
}
/* void setSafeJSContextForCurrentThread (in JSContextPtr cx); */
NS_IMETHODIMP
nsXPConnect::SetSafeJSContextForCurrentThread(JSContext * cx)
{
XPCCallContext ccx(NATIVE_CALLER);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
return ccx.GetThreadData()->GetJSContextStack()->SetSafeJSContext(cx);
}
/* void clearAllWrappedNativeSecurityPolicies (); */
NS_IMETHODIMP
nsXPConnect::ClearAllWrappedNativeSecurityPolicies()
{
XPCCallContext ccx(NATIVE_CALLER);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
return XPCWrappedNativeScope::ClearAllWrappedNativeSecurityPolicies(ccx);
}
/* void restoreWrappedNativePrototype (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsIClassInfo aClassInfo, in nsIXPConnectJSObjectHolder aPrototype); */
NS_IMETHODIMP
nsXPConnect::RestoreWrappedNativePrototype(JSContext * aJSContext,
JSObject * aScope,
nsIClassInfo * aClassInfo,
nsIXPConnectJSObjectHolder * aPrototype)
{
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
if(!aClassInfo || !aPrototype)
return UnexpectedFailure(NS_ERROR_INVALID_ARG);
JSObject *protoJSObject;
nsresult rv = aPrototype->GetJSObject(&protoJSObject);
if(NS_FAILED(rv))
return UnexpectedFailure(rv);
if(!IS_PROTO_CLASS(JS_GET_CLASS(ccx, protoJSObject)))
return UnexpectedFailure(NS_ERROR_INVALID_ARG);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aScope);
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeProto *proto =
(XPCWrappedNativeProto*)JS_GetPrivate(ccx, protoJSObject);
if(!proto)
return UnexpectedFailure(NS_ERROR_FAILURE);
if(scope != proto->GetScope())
{
NS_ERROR("Attempt to reset prototype to a prototype from a"
"different scope!");
return UnexpectedFailure(NS_ERROR_INVALID_ARG);
}
XPCNativeScriptableInfo *si = proto->GetScriptableInfo();
if(si && si->GetFlags().DontSharePrototype())
return UnexpectedFailure(NS_ERROR_INVALID_ARG);
ClassInfo2WrappedNativeProtoMap* map = scope->GetWrappedNativeProtoMap();
XPCLock* lock = scope->GetRuntime()->GetMapLock();
{ // scoped lock
XPCAutoLock al(lock);
XPCWrappedNativeProtoMap* detachedMap =
GetRuntime()->GetDetachedWrappedNativeProtoMap();
// If we're replacing an old proto, make sure to put it on the
// map of detached wrapped native protos so that the old proto
// gets properly cleaned up, especially during shutdown.
XPCWrappedNativeProto *oldProto = map->Find(aClassInfo);
if (oldProto) {
detachedMap->Add(oldProto);
// ClassInfo2WrappedNativeProtoMap doesn't ever replace
// entries in the map, so now since we know there's an
// entry for aClassInfo in the map we haveto remove it to
// be able to add the new one.
map->Remove(aClassInfo);
// This code should do the right thing even if we're
// restoring the current proto, but warn in that case
// since doing that is pointless.
NS_WARN_IF_FALSE(proto != oldProto,
"Restoring current prototype, fix caller!");
}
map->Add(aClassInfo, proto);
// Remove the prototype from the map of detached wrapped
// native prototypes now that the prototype is part of a scope
// again.
detachedMap->Remove(proto);
}
// The global in this scope didn't change, but a prototype did
// (most likely the global object's prototype), which means the
// scope needs to get a chance to update its cached
// Object.prototype pointers etc.
scope->SetGlobal(ccx, aScope);
return NS_OK;
}
NS_IMETHODIMP
nsXPConnect::CreateSandbox(JSContext *cx, nsIPrincipal *principal,
nsIXPConnectJSObjectHolder **_retval)
{
#ifdef XPCONNECT_STANDALONE
return NS_ERROR_NOT_AVAILABLE;
#else /* XPCONNECT_STANDALONE */
XPCCallContext ccx(NATIVE_CALLER, cx);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
*_retval = nsnull;
jsval rval = JSVAL_VOID;
AUTO_MARK_JSVAL(ccx, &rval);
nsresult rv = xpc_CreateSandboxObject(cx, &rval, principal);
NS_ASSERTION(NS_FAILED(rv) || !JSVAL_IS_PRIMITIVE(rval),
"Bad return value from xpc_CreateSandboxObject()!");
if (NS_SUCCEEDED(rv) && !JSVAL_IS_PRIMITIVE(rval)) {
*_retval = XPCJSObjectHolder::newHolder(cx, JSVAL_TO_OBJECT(rval));
NS_ENSURE_TRUE(*_retval, NS_ERROR_OUT_OF_MEMORY);
NS_ADDREF(*_retval);
}
return rv;
#endif /* XPCONNECT_STANDALONE */
}
// nsIXPConnect_MOZILLA_1_8_BRANCH version.
NS_IMETHODIMP
nsXPConnect::EvalInSandboxObject(const nsAString& source, JSContext *cx,
nsIXPConnectJSObjectHolder *sandbox,
jsval *rval)
{
return EvalInSandboxObject2(source, cx, sandbox, PR_FALSE, rval);
}
// nsIXPConnect_MOZILLA_1_8_BRANCH2 version.
NS_IMETHODIMP
nsXPConnect::EvalInSandboxObject2(const nsAString& source, JSContext *cx,
nsIXPConnectJSObjectHolder *sandbox,
PRBool returnStringOnly, jsval *rval)
{
#ifdef XPCONNECT_STANDALONE
return NS_ERROR_NOT_AVAILABLE;
#else /* XPCONNECT_STANDALONE */
if (!sandbox)
return NS_ERROR_INVALID_ARG;
JSObject *obj;
nsresult rv = sandbox->GetJSObject(&obj);
NS_ENSURE_SUCCESS(rv, rv);
return xpc_EvalInSandbox(cx, obj, source,
NS_ConvertUTF16toUTF8(source).get(), 1,
returnStringOnly, rval);
#endif /* XPCONNECT_STANDALONE */
}
/* nsIXPConnectJSObjectHolder getWrappedNativePrototype (in JSContextPtr aJSContext, in JSObjectPtr aScope, in nsIClassInfo aClassInfo); */
NS_IMETHODIMP
nsXPConnect::GetWrappedNativePrototype(JSContext * aJSContext,
JSObject * aScope,
nsIClassInfo *aClassInfo,
nsIXPConnectJSObjectHolder **_retval)
{
XPCCallContext ccx(NATIVE_CALLER, aJSContext);
if(!ccx.IsValid())
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCWrappedNativeScope* scope =
XPCWrappedNativeScope::FindInJSObjectScope(ccx, aScope);
if(!scope)
return UnexpectedFailure(NS_ERROR_FAILURE);
XPCNativeScriptableCreateInfo sciProto;
XPCWrappedNative::GatherProtoScriptableCreateInfo(aClassInfo, &sciProto);
AutoMarkingWrappedNativeProtoPtr proto(ccx);
proto = XPCWrappedNativeProto::GetNewOrUsed(ccx, scope, aClassInfo,
&sciProto, JS_FALSE,
OBJ_IS_NOT_GLOBAL);
if(!proto)
return UnexpectedFailure(NS_ERROR_FAILURE);
nsIXPConnectJSObjectHolder* holder;
*_retval = holder = XPCJSObjectHolder::newHolder(ccx,
proto->GetJSProtoObject());
if(!holder)
return UnexpectedFailure(NS_ERROR_FAILURE);
NS_ADDREF(holder);
return NS_OK;
}
/* attribute PRBool collectGarbageOnMainThreadOnly; */
NS_IMETHODIMP
nsXPConnect::GetCollectGarbageOnMainThreadOnly(PRBool *aCollectGarbageOnMainThreadOnly)
{
XPCJSRuntime* rt = GetRuntime();
if(!rt)
return UnexpectedFailure(NS_ERROR_FAILURE);
*aCollectGarbageOnMainThreadOnly = rt->GetMainThreadOnlyGC();
return NS_OK;
}
NS_IMETHODIMP
nsXPConnect::SetCollectGarbageOnMainThreadOnly(PRBool aCollectGarbageOnMainThreadOnly)
{
XPCJSRuntime* rt = GetRuntime();
if(!rt)
return UnexpectedFailure(NS_ERROR_FAILURE);
rt->SetMainThreadOnlyGC(aCollectGarbageOnMainThreadOnly);
return NS_OK;
}
/* attribute PRBool deferReleasesUntilAfterGarbageCollection; */
NS_IMETHODIMP
nsXPConnect::GetDeferReleasesUntilAfterGarbageCollection(PRBool *aDeferReleasesUntilAfterGarbageCollection)
{
XPCJSRuntime* rt = GetRuntime();
if(!rt)
return UnexpectedFailure(NS_ERROR_FAILURE);
*aDeferReleasesUntilAfterGarbageCollection = rt->GetDeferReleases();
return NS_OK;
}
NS_IMETHODIMP
nsXPConnect::SetDeferReleasesUntilAfterGarbageCollection(PRBool aDeferReleasesUntilAfterGarbageCollection)
{
XPCJSRuntime* rt = GetRuntime();
if(!rt)
return UnexpectedFailure(NS_ERROR_FAILURE);
rt->SetDeferReleases(aDeferReleasesUntilAfterGarbageCollection);
return NS_OK;
}
/* void releaseJSContext (in JSContextPtr aJSContext, in PRBool noGC); */
NS_IMETHODIMP
nsXPConnect::ReleaseJSContext(JSContext * aJSContext, PRBool noGC)
{
NS_ASSERTION(aJSContext, "bad param");
XPCPerThreadData* tls = XPCPerThreadData::GetData();
if(tls)
{
XPCCallContext* ccx = nsnull;
for(XPCCallContext* cur = tls->GetCallContext();
cur;
cur = cur->GetPrevCallContext())
{
if(cur->GetJSContext() == aJSContext)
{
ccx = cur;
// Keep looping to find the deepest matching call context.
}
}
if(ccx)
{
#ifdef DEBUG_xpc_hacker
printf("!xpc - deferring destruction of JSContext @ %0x\n",
aJSContext);
#endif
ccx->SetDestroyJSContextInDestructor(JS_TRUE);
JS_ClearNewbornRoots(aJSContext);
return NS_OK;
}
// else continue on and synchronously destroy the JSContext ...
NS_ASSERTION(!tls->GetJSContextStack() ||
!tls->GetJSContextStack()->
DEBUG_StackHasJSContext(aJSContext),
"JSContext still in threadjscontextstack!");
}
if(noGC)
JS_DestroyContextNoGC(aJSContext);
else
JS_DestroyContext(aJSContext);
SyncJSContexts();
return NS_OK;
}
/* void debugDump (in short depth); */
NS_IMETHODIMP
nsXPConnect::DebugDump(PRInt16 depth)
{
#ifdef DEBUG
depth-- ;
XPC_LOG_ALWAYS(("nsXPConnect @ %x with mRefCnt = %d", this, mRefCnt.get()));
XPC_LOG_INDENT();
XPC_LOG_ALWAYS(("gSelf @ %x", gSelf));
XPC_LOG_ALWAYS(("gOnceAliveNowDead is %d", (int)gOnceAliveNowDead));
XPC_LOG_ALWAYS(("mDefaultSecurityManager @ %x", mDefaultSecurityManager));
XPC_LOG_ALWAYS(("mDefaultSecurityManagerFlags of %x", mDefaultSecurityManagerFlags));
XPC_LOG_ALWAYS(("mInterfaceInfoManager @ %x", mInterfaceInfoManager));
XPC_LOG_ALWAYS(("mContextStack @ %x", mContextStack));
if(mRuntime)
{
if(depth)
mRuntime->DebugDump(depth);
else
XPC_LOG_ALWAYS(("XPCJSRuntime @ %x", mRuntime));
}
else
XPC_LOG_ALWAYS(("mRuntime is null"));
XPCWrappedNativeScope::DebugDumpAllScopes(depth);
XPC_LOG_OUTDENT();
#endif
return NS_OK;
}
/* void debugDumpObject (in nsISupports aCOMObj, in short depth); */
NS_IMETHODIMP
nsXPConnect::DebugDumpObject(nsISupports *p, PRInt16 depth)
{
#ifdef DEBUG
if(!depth)
return NS_OK;
if(!p)
{
XPC_LOG_ALWAYS(("*** Cound not dump object with NULL address"));
return NS_OK;
}
nsIXPConnect* xpc;
nsIXPCWrappedJSClass* wjsc;
nsIXPConnectWrappedNative* wn;
nsIXPConnectWrappedJS* wjs;
if(NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnect),
(void**)&xpc)))
{
XPC_LOG_ALWAYS(("Dumping a nsIXPConnect..."));
xpc->DebugDump(depth);
NS_RELEASE(xpc);
}
else if(NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPCWrappedJSClass),
(void**)&wjsc)))
{
XPC_LOG_ALWAYS(("Dumping a nsIXPCWrappedJSClass..."));
wjsc->DebugDump(depth);
NS_RELEASE(wjsc);
}
else if(NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnectWrappedNative),
(void**)&wn)))
{
XPC_LOG_ALWAYS(("Dumping a nsIXPConnectWrappedNative..."));
wn->DebugDump(depth);
NS_RELEASE(wn);
}
else if(NS_SUCCEEDED(p->QueryInterface(NS_GET_IID(nsIXPConnectWrappedJS),
(void**)&wjs)))
{
XPC_LOG_ALWAYS(("Dumping a nsIXPConnectWrappedJS..."));
wjs->DebugDump(depth);
NS_RELEASE(wjs);
}
else
XPC_LOG_ALWAYS(("*** Could not dump the nsISupports @ %x", p));
#endif
return NS_OK;
}
/* void debugDumpJSStack (in PRBool showArgs, in PRBool showLocals, in PRBool showThisProps); */
NS_IMETHODIMP
nsXPConnect::DebugDumpJSStack(PRBool showArgs,
PRBool showLocals,
PRBool showThisProps)
{
#ifdef DEBUG
JSContext* cx;
nsresult rv;
nsCOMPtr<nsIThreadJSContextStack> stack =
do_GetService(XPC_CONTEXT_STACK_CONTRACTID, &rv);
if(NS_FAILED(rv) || !stack)
printf("failed to get nsIThreadJSContextStack service!\n");
else if(NS_FAILED(stack->Peek(&cx)))
printf("failed to peek into nsIThreadJSContextStack service!\n");
else if(!cx)
printf("there is no JSContext on the nsIThreadJSContextStack!\n");
else
xpc_DumpJSStack(cx, showArgs, showLocals, showThisProps);
#endif
return NS_OK;
}
/* void debugDumpEvalInJSStackFrame (in PRUint32 aFrameNumber, in string aSourceText); */
NS_IMETHODIMP
nsXPConnect::DebugDumpEvalInJSStackFrame(PRUint32 aFrameNumber, const char *aSourceText)
{
#ifdef DEBUG
JSContext* cx;
nsresult rv;
nsCOMPtr<nsIThreadJSContextStack> stack =
do_GetService(XPC_CONTEXT_STACK_CONTRACTID, &rv);
if(NS_FAILED(rv) || !stack)
printf("failed to get nsIThreadJSContextStack service!\n");
else if(NS_FAILED(stack->Peek(&cx)))
printf("failed to peek into nsIThreadJSContextStack service!\n");
else if(!cx)
printf("there is no JSContext on the nsIThreadJSContextStack!\n");
else
xpc_DumpEvalInJSStackFrame(cx, aFrameNumber, aSourceText);
#endif
return NS_OK;
}
/* JSVal variantToJS (in JSContextPtr ctx, in JSObjectPtr scope, in nsIVariant value); */
NS_IMETHODIMP
nsXPConnect::VariantToJS(JSContext* ctx, JSObject* scope, nsIVariant* value, jsval* _retval)
{
NS_PRECONDITION(ctx, "bad param");
NS_PRECONDITION(scope, "bad param");
NS_PRECONDITION(value, "bad param");
NS_PRECONDITION(_retval, "bad param");
XPCCallContext ccx(NATIVE_CALLER, ctx);
if(!ccx.IsValid())
return NS_ERROR_FAILURE;
nsresult rv = NS_OK;
if(!XPCVariant::VariantDataToJS(ccx, value, scope, &rv, _retval))
{
if(NS_FAILED(rv))
return rv;
return NS_ERROR_FAILURE;
}
return NS_OK;
}
/* nsIVariant JSToVariant (in JSContextPtr ctx, in JSVal value); */
NS_IMETHODIMP
nsXPConnect::JSToVariant(JSContext* ctx, jsval value, nsIVariant** _retval)
{
NS_PRECONDITION(ctx, "bad param");
NS_PRECONDITION(value, "bad param");
NS_PRECONDITION(_retval, "bad param");
XPCCallContext ccx(NATIVE_CALLER, ctx);
if(!ccx.IsValid())
return NS_ERROR_FAILURE;
*_retval = XPCVariant::newVariant(ccx, value);
if(!(*_retval))
return NS_ERROR_FAILURE;
return NS_OK;
}
/* void flagSystemFilenamePrefix (in string filenamePrefix); */
NS_IMETHODIMP
nsXPConnect::FlagSystemFilenamePrefix(const char *aFilenamePrefix)
{
NS_PRECONDITION(aFilenamePrefix, "bad param");
nsIJSRuntimeService* rtsvc = nsXPConnect::GetJSRuntimeService();
if(!rtsvc)
return NS_ERROR_NOT_INITIALIZED;
JSRuntime* rt;
nsresult rv = rtsvc->GetRuntime(&rt);
if(NS_FAILED(rv))
return rv;
if(!JS_FlagScriptFilenamePrefix(rt, aFilenamePrefix, JSFILENAME_SYSTEM))
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsXPConnect::WillProcessEvents(nsIEventQueue *aQueue)
{
// Push a null JSContext so that we don't see any script during
// event processing.
NS_ENSURE_STATE(mContextStack);
return mContextStack->Push(nsnull);
}
NS_IMETHODIMP
nsXPConnect::DidProcessEvents(nsIEventQueue *aQueue)
{
NS_ENSURE_STATE(mContextStack);
return mContextStack->Pop(nsnull);
}
#ifdef DEBUG
/* These are here to be callable from a debugger */
JS_BEGIN_EXTERN_C
void DumpJSStack()
{
nsresult rv;
nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID(), &rv));
if(NS_SUCCEEDED(rv) && xpc)
xpc->DebugDumpJSStack(PR_TRUE, PR_TRUE, PR_FALSE);
else
printf("failed to get XPConnect service!\n");
}
void DumpJSEval(PRUint32 frameno, const char* text)
{
nsresult rv;
nsCOMPtr<nsIXPConnect> xpc(do_GetService(nsIXPConnect::GetCID(), &rv));
if(NS_SUCCEEDED(rv) && xpc)
xpc->DebugDumpEvalInJSStackFrame(frameno, text);
else
printf("failed to get XPConnect service!\n");
}
void DumpJSObject(JSObject* obj)
{
xpc_DumpJSObject(obj);
}
void DumpJSValue(jsval val)
{
printf("Dumping 0x%lx. Value tag is %lu.\n", val, JSVAL_TAG(val));
if(JSVAL_IS_NULL(val)) {
printf("Value is null\n");
}
else if(JSVAL_IS_OBJECT(val)) {
printf("Value is an object\n");
JSObject* obj = JSVAL_TO_OBJECT(val);
DumpJSObject(obj);
}
else if(JSVAL_IS_NUMBER(val)) {
printf("Value is a number: ");
if(JSVAL_IS_INT(val))
printf("Integer %i\n", JSVAL_TO_INT(val));
else if(JSVAL_IS_DOUBLE(val))
printf("Floating-point value %f\n", *JSVAL_TO_DOUBLE(val));
}
else if(JSVAL_IS_STRING(val)) {
printf("Value is a string: ");
JSString* string = JSVAL_TO_STRING(val);
char* bytes = JS_GetStringBytes(string);
printf("<%s>\n", bytes);
}
else if(JSVAL_IS_BOOLEAN(val)) {
printf("Value is boolean: ");
printf(JSVAL_TO_BOOLEAN(val) ? "true" : "false");
}
else if(JSVAL_IS_VOID(val)) {
printf("Value is undefined\n");
}
else {
printf("No idea what this value is.\n");
}
}
JS_END_EXTERN_C
#endif
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