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js/xpconnect/loader/mozJSComponentLoader.h@6474c204b198 (annotated)

js/xpconnect/loader/mozJSComponentLoader.h

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0	2	/* vim: set ts=8 sts=4 et sw=4 tw=99: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#ifndef mozJSComponentLoader_h
michael@0	8	#define mozJSComponentLoader_h
michael@0	9
michael@0	10	#include "mozilla/MemoryReporting.h"
michael@0	11	#include "mozilla/ModuleLoader.h"
michael@0	12	#include "nsISupports.h"
michael@0	13	#include "nsIObserver.h"
michael@0	14	#include "nsIURI.h"
michael@0	15	#include "xpcIJSModuleLoader.h"
michael@0	16	#include "nsClassHashtable.h"
michael@0	17	#include "nsCxPusher.h"
michael@0	18	#include "nsDataHashtable.h"
michael@0	19	#include "jsapi.h"
michael@0	20
michael@0	21	#include "xpcIJSGetFactory.h"
michael@0	22
michael@0	23	class nsIFile;
michael@0	24	class nsIJSRuntimeService;
michael@0	25	class nsIPrincipal;
michael@0	26	class nsIXPConnectJSObjectHolder;
michael@0	27
michael@0	28	/* 6bd13476-1dd2-11b2-bbef-f0ccb5fa64b6 (thanks, mozbot) */
michael@0	29
michael@0	30	#define MOZJSCOMPONENTLOADER_CID \
michael@0	31	{0x6bd13476, 0x1dd2, 0x11b2, \
michael@0	32	{ 0xbb, 0xef, 0xf0, 0xcc, 0xb5, 0xfa, 0x64, 0xb6 }}
michael@0	33	#define MOZJSCOMPONENTLOADER_CONTRACTID "@mozilla.org/moz/jsloader;1"
michael@0	34
michael@0	35	class JSCLContextHelper;
michael@0	36
michael@0	37	class mozJSComponentLoader : public mozilla::ModuleLoader,
michael@0	38	public xpcIJSModuleLoader,
michael@0	39	public nsIObserver
michael@0	40	{
michael@0	41	friend class JSCLContextHelper;
michael@0	42	public:
michael@0	43	NS_DECL_ISUPPORTS
michael@0	44	NS_DECL_XPCIJSMODULELOADER
michael@0	45	NS_DECL_NSIOBSERVER
michael@0	46
michael@0	47	mozJSComponentLoader();
michael@0	48	virtual ~mozJSComponentLoader();
michael@0	49
michael@0	50	// ModuleLoader
michael@0	51	const mozilla::Module* LoadModule(mozilla::FileLocation &aFile);
michael@0	52
michael@0	53	nsresult FindTargetObject(JSContext* aCx,
michael@0	54	JS::MutableHandleObject aTargetObject);
michael@0	55
michael@0	56	static mozJSComponentLoader* Get() { return sSelf; }
michael@0	57
michael@0	58	void NoteSubScript(JS::HandleScript aScript, JS::HandleObject aThisObject);
michael@0	59
michael@0	60	size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf);
michael@0	61
michael@0	62	protected:
michael@0	63	static mozJSComponentLoader* sSelf;
michael@0	64
michael@0	65	nsresult ReallyInit();
michael@0	66	void UnloadModules();
michael@0	67
michael@0	68	JSObject* PrepareObjectForLocation(JSCLContextHelper& aCx,
michael@0	69	nsIFile* aComponentFile,
michael@0	70	nsIURI *aComponent,
michael@0	71	bool aReuseLoaderGlobal,
michael@0	72	bool *aRealFile);
michael@0	73
michael@0	74	nsresult ObjectForLocation(nsIFile* aComponentFile,
michael@0	75	nsIURI *aComponent,
michael@0	76	JS::MutableHandleObject aObject,
michael@0	77	JS::MutableHandleScript aTableScript,
michael@0	78	char **location,
michael@0	79	bool aCatchException,
michael@0	80	JS::MutableHandleValue aException);
michael@0	81
michael@0	82	nsresult ImportInto(const nsACString &aLocation,
michael@0	83	JS::HandleObject targetObj,
michael@0	84	JSContext *callercx,
michael@0	85	JS::MutableHandleObject vp);
michael@0	86
michael@0	87	nsCOMPtr<nsIComponentManager> mCompMgr;
michael@0	88	nsCOMPtr<nsIJSRuntimeService> mRuntimeService;
michael@0	89	nsCOMPtr<nsIPrincipal> mSystemPrincipal;
michael@0	90	nsCOMPtr<nsIXPConnectJSObjectHolder> mLoaderGlobal;
michael@0	91	JSRuntime *mRuntime;
michael@0	92	JSContext *mContext;
michael@0	93
michael@0	94	class ModuleEntry : public mozilla::Module
michael@0	95	{
michael@0	96	public:
michael@0	97	ModuleEntry(JSContext* aCx)
michael@0	98	: mozilla::Module(), obj(aCx, nullptr), thisObjectKey(aCx, nullptr)
michael@0	99	{
michael@0	100	mVersion = mozilla::Module::kVersion;
michael@0	101	mCIDs = nullptr;
michael@0	102	mContractIDs = nullptr;
michael@0	103	mCategoryEntries = nullptr;
michael@0	104	getFactoryProc = GetFactory;
michael@0	105	loadProc = nullptr;
michael@0	106	unloadProc = nullptr;
michael@0	107
michael@0	108	location = nullptr;
michael@0	109	}
michael@0	110
michael@0	111	~ModuleEntry() {
michael@0	112	Clear();
michael@0	113	}
michael@0	114
michael@0	115	void Clear() {
michael@0	116	getfactoryobj = nullptr;
michael@0	117
michael@0	118	if (obj) {
michael@0	119	mozilla::AutoJSContext cx;
michael@0	120	JSAutoCompartment ac(cx, obj);
michael@0	121
michael@0	122	JS_SetAllNonReservedSlotsToUndefined(cx, obj);
michael@0	123	obj = nullptr;
michael@0	124	thisObjectKey = nullptr;
michael@0	125	}
michael@0	126
michael@0	127	if (location)
michael@0	128	NS_Free(location);
michael@0	129
michael@0	130	obj = nullptr;
michael@0	131	thisObjectKey = nullptr;
michael@0	132	location = nullptr;
michael@0	133	}
michael@0	134
michael@0	135	size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
michael@0	136
michael@0	137	static already_AddRefed<nsIFactory> GetFactory(const mozilla::Module& module,
michael@0	138	const mozilla::Module::CIDEntry& entry);
michael@0	139
michael@0	140	nsCOMPtr<xpcIJSGetFactory> getfactoryobj;
michael@0	141	JS::PersistentRootedObject obj;
michael@0	142	JS::PersistentRootedScript thisObjectKey;
michael@0	143	char *location;
michael@0	144	};
michael@0	145
michael@0	146	friend class ModuleEntry;
michael@0	147
michael@0	148	static size_t DataEntrySizeOfExcludingThis(const nsACString& aKey, ModuleEntry* const& aData,
michael@0	149	mozilla::MallocSizeOf aMallocSizeOf, void* arg);
michael@0	150	static size_t ClassEntrySizeOfExcludingThis(const nsACString& aKey,
michael@0	151	const nsAutoPtr<ModuleEntry>& aData,
michael@0	152	mozilla::MallocSizeOf aMallocSizeOf, void* arg);
michael@0	153
michael@0	154	// Modules are intentionally leaked, but still cleared.
michael@0	155	static PLDHashOperator ClearModules(const nsACString& key, ModuleEntry*& entry, void* cx);
michael@0	156	nsDataHashtable<nsCStringHashKey, ModuleEntry*> mModules;
michael@0	157
michael@0	158	nsClassHashtable<nsCStringHashKey, ModuleEntry> mImports;
michael@0	159	nsDataHashtable<nsCStringHashKey, ModuleEntry*> mInProgressImports;
michael@0	160	nsDataHashtable<nsPtrHashKey<JSScript>, JSObject*> mThisObjects;
michael@0	161
michael@0	162	bool mInitialized;
michael@0	163	bool mReuseLoaderGlobal;
michael@0	164	};
michael@0	165
michael@0	166	#endif