1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/jsd/jsd_xpc.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,392 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef JSDSERVICE_H___
1.11 +#define JSDSERVICE_H___
1.12 +
1.13 +#include "jsdIDebuggerService.h"
1.14 +#include "jsdebug.h"
1.15 +#include "nsString.h"
1.16 +#include "nsCOMPtr.h"
1.17 +#include "nspr.h"
1.18 +#include "nsCycleCollectionParticipant.h"
1.19 +#include "mozilla/Attributes.h"
1.20 +
1.21 +// #if defined(DEBUG_rginda_l)
1.22 +// # define DEBUG_verbose
1.23 +// #endif
1.24 +
1.25 +struct LiveEphemeral {
1.26 + /* link in a chain of live values list */
1.27 + PRCList links;
1.28 + jsdIEphemeral *value;
1.29 + void *key;
1.30 +};
1.31 +
1.32 +struct PCMapEntry {
1.33 + uint32_t pc, line;
1.34 +};
1.35 +
1.36 +/*******************************************************************************
1.37 + * reflected jsd data structures
1.38 + *******************************************************************************/
1.39 +
1.40 +class jsdObject MOZ_FINAL : public jsdIObject
1.41 +{
1.42 + public:
1.43 + NS_DECL_THREADSAFE_ISUPPORTS
1.44 + NS_DECL_JSDIOBJECT
1.45 +
1.46 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.47 + jsdObject (JSDContext *aCx, JSDObject *aObject) :
1.48 + mCx(aCx), mObject(aObject)
1.49 + {
1.50 + }
1.51 +
1.52 + static jsdIObject *FromPtr (JSDContext *aCx,
1.53 + JSDObject *aObject)
1.54 + {
1.55 + if (!aObject)
1.56 + return nullptr;
1.57 +
1.58 + jsdIObject *rv = new jsdObject (aCx, aObject);
1.59 + NS_IF_ADDREF(rv);
1.60 + return rv;
1.61 + }
1.62 +
1.63 + private:
1.64 + jsdObject(); /* no implementation */
1.65 + jsdObject(const jsdObject&); /* no implementation */
1.66 +
1.67 + JSDContext *mCx;
1.68 + JSDObject *mObject;
1.69 +};
1.70 +
1.71 +
1.72 +class jsdProperty : public jsdIProperty
1.73 +{
1.74 + public:
1.75 + NS_DECL_THREADSAFE_ISUPPORTS
1.76 + NS_DECL_JSDIPROPERTY
1.77 + NS_DECL_JSDIEPHEMERAL
1.78 +
1.79 + jsdProperty (JSDContext *aCx, JSDProperty *aProperty);
1.80 + virtual ~jsdProperty ();
1.81 +
1.82 + static jsdIProperty *FromPtr (JSDContext *aCx,
1.83 + JSDProperty *aProperty)
1.84 + {
1.85 + if (!aProperty)
1.86 + return nullptr;
1.87 +
1.88 + jsdIProperty *rv = new jsdProperty (aCx, aProperty);
1.89 + NS_IF_ADDREF(rv);
1.90 + return rv;
1.91 + }
1.92 +
1.93 + static void InvalidateAll();
1.94 +
1.95 + private:
1.96 + jsdProperty(); /* no implementation */
1.97 + jsdProperty(const jsdProperty&); /* no implementation */
1.98 +
1.99 + bool mValid;
1.100 + LiveEphemeral mLiveListEntry;
1.101 + JSDContext *mCx;
1.102 + JSDProperty *mProperty;
1.103 +};
1.104 +
1.105 +class jsdScript : public jsdIScript
1.106 +{
1.107 + public:
1.108 + NS_DECL_THREADSAFE_ISUPPORTS
1.109 + NS_DECL_JSDISCRIPT
1.110 + NS_DECL_JSDIEPHEMERAL
1.111 +
1.112 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.113 + jsdScript (JSDContext *aCx, JSDScript *aScript);
1.114 + virtual ~jsdScript();
1.115 +
1.116 + static jsdIScript *FromPtr (JSDContext *aCx, JSDScript *aScript)
1.117 + {
1.118 + if (!aScript)
1.119 + return nullptr;
1.120 +
1.121 + void *data = JSD_GetScriptPrivate (aScript);
1.122 + jsdIScript *rv;
1.123 +
1.124 + if (data) {
1.125 + rv = static_cast<jsdIScript *>(data);
1.126 + } else {
1.127 + rv = new jsdScript (aCx, aScript);
1.128 + NS_IF_ADDREF(rv); /* addref for the SetScriptPrivate, released in
1.129 + * Invalidate() */
1.130 + JSD_SetScriptPrivate (aScript, static_cast<void *>(rv));
1.131 + }
1.132 +
1.133 + NS_IF_ADDREF(rv); /* addref for return value */
1.134 + return rv;
1.135 + }
1.136 +
1.137 + static void InvalidateAll();
1.138 +
1.139 + private:
1.140 + static uint32_t LastTag;
1.141 +
1.142 + jsdScript(); /* no implementation */
1.143 + jsdScript (const jsdScript&); /* no implementation */
1.144 + PCMapEntry* CreatePPLineMap();
1.145 + uint32_t PPPcToLine(uint32_t aPC);
1.146 + uint32_t PPLineToPc(uint32_t aLine);
1.147 +
1.148 + bool mValid;
1.149 + uint32_t mTag;
1.150 + JSDContext *mCx;
1.151 + JSDScript *mScript;
1.152 + nsCString *mFileName;
1.153 + nsCString *mFunctionName;
1.154 + uint32_t mBaseLineNumber, mLineExtent;
1.155 + PCMapEntry *mPPLineMap;
1.156 + uint32_t mPCMapSize;
1.157 + uintptr_t mFirstPC;
1.158 +};
1.159 +
1.160 +uint32_t jsdScript::LastTag = 0;
1.161 +
1.162 +class jsdContext : public jsdIContext
1.163 +{
1.164 + public:
1.165 + NS_DECL_THREADSAFE_ISUPPORTS
1.166 + NS_DECL_JSDICONTEXT
1.167 + NS_DECL_JSDIEPHEMERAL
1.168 +
1.169 + jsdContext (JSDContext *aJSDCx, JSContext *aJSCx, nsISupports *aISCx);
1.170 + virtual ~jsdContext();
1.171 +
1.172 + static void InvalidateAll();
1.173 + static jsdIContext *FromPtr (JSDContext *aJSDCx, JSContext *aJSCx);
1.174 + private:
1.175 + static uint32_t LastTag;
1.176 +
1.177 + jsdContext (); /* no implementation */
1.178 + jsdContext (const jsdContext&); /* no implementation */
1.179 +
1.180 + bool mValid;
1.181 + // The API exposed by JSD here is problematic, because it allows for per-
1.182 + // JSContext script disabling, which no longer exists in the platform.
1.183 + // The only consumer here in practice is Firebug, which makes sure to re-
1.184 + // enable any disabled script before navigation. But if some other consumer
1.185 + // were to disable script, navigate, and try to re-enable it, we'd end up
1.186 + // with an unmatched UnblockScript call, which violates platform invariants.
1.187 + // So we make a half-hearted attempt to detect this by storing the Window ID
1.188 + // of the scope for which we disabled script.
1.189 + uint64_t mScriptDisabledForWindowWithID;
1.190 + bool IsScriptEnabled() { return !mScriptDisabledForWindowWithID; }
1.191 + LiveEphemeral mLiveListEntry;
1.192 + uint32_t mTag;
1.193 + JSDContext *mJSDCx;
1.194 + JSContext *mJSCx;
1.195 + nsCOMPtr<nsISupports> mISCx;
1.196 +};
1.197 +
1.198 +uint32_t jsdContext::LastTag = 0;
1.199 +
1.200 +class jsdStackFrame : public jsdIStackFrame
1.201 +{
1.202 + public:
1.203 + NS_DECL_THREADSAFE_ISUPPORTS
1.204 + NS_DECL_JSDISTACKFRAME
1.205 + NS_DECL_JSDIEPHEMERAL
1.206 +
1.207 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.208 + jsdStackFrame (JSDContext *aCx, JSDThreadState *aThreadState,
1.209 + JSDStackFrameInfo *aStackFrameInfo);
1.210 + virtual ~jsdStackFrame();
1.211 +
1.212 + static void InvalidateAll();
1.213 + static jsdIStackFrame* FromPtr (JSDContext *aCx,
1.214 + JSDThreadState *aThreadState,
1.215 + JSDStackFrameInfo *aStackFrameInfo);
1.216 +
1.217 + private:
1.218 + jsdStackFrame(); /* no implementation */
1.219 + jsdStackFrame(const jsdStackFrame&); /* no implementation */
1.220 +
1.221 + bool mValid;
1.222 + LiveEphemeral mLiveListEntry;
1.223 + JSDContext *mCx;
1.224 + JSDThreadState *mThreadState;
1.225 + JSDStackFrameInfo *mStackFrameInfo;
1.226 +};
1.227 +
1.228 +class jsdValue : public jsdIValue
1.229 +{
1.230 + public:
1.231 + NS_DECL_THREADSAFE_ISUPPORTS
1.232 + NS_DECL_JSDIVALUE
1.233 + NS_DECL_JSDIEPHEMERAL
1.234 +
1.235 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.236 + jsdValue (JSDContext *aCx, JSDValue *aValue);
1.237 + virtual ~jsdValue();
1.238 +
1.239 + static jsdIValue *FromPtr (JSDContext *aCx, JSDValue *aValue);
1.240 + static void InvalidateAll();
1.241 +
1.242 + private:
1.243 + jsdValue(); /* no implementation */
1.244 + jsdValue (const jsdScript&); /* no implementation */
1.245 +
1.246 + bool mValid;
1.247 + LiveEphemeral mLiveListEntry;
1.248 + JSDContext *mCx;
1.249 + JSDValue *mValue;
1.250 +};
1.251 +
1.252 +/******************************************************************************
1.253 + * debugger service
1.254 + ******************************************************************************/
1.255 +
1.256 +class jsdService : public jsdIDebuggerService
1.257 +{
1.258 + public:
1.259 + NS_DECL_CYCLE_COLLECTING_ISUPPORTS
1.260 + NS_DECL_JSDIDEBUGGERSERVICE
1.261 +
1.262 + NS_DECL_CYCLE_COLLECTION_CLASS(jsdService)
1.263 +
1.264 + jsdService() : mOn(false), mPauseLevel(0),
1.265 + mNestedLoopLevel(0), mCx(0), mRuntime(0), mErrorHook(0),
1.266 + mBreakpointHook(0), mDebugHook(0), mDebuggerHook(0),
1.267 + mInterruptHook(0), mScriptHook(0), mThrowHook(0),
1.268 + mTopLevelHook(0), mFunctionHook(0),
1.269 + mWarnedAboutDeprecation(false),
1.270 + mDeprecationAcknowledged(false)
1.271 + {
1.272 + }
1.273 +
1.274 + virtual ~jsdService();
1.275 +
1.276 + static jsdService *GetService ();
1.277 +
1.278 + bool CheckInterruptHook() { return !!mInterruptHook; }
1.279 +
1.280 + nsresult DoPause(uint32_t *_rval, bool internalCall);
1.281 + nsresult DoUnPause(uint32_t *_rval, bool internalCall);
1.282 +
1.283 + private:
1.284 + bool mOn;
1.285 + uint32_t mPauseLevel;
1.286 + uint32_t mNestedLoopLevel;
1.287 + JSDContext *mCx;
1.288 + JSRuntime *mRuntime;
1.289 +
1.290 + nsCOMPtr<jsdIErrorHook> mErrorHook;
1.291 + nsCOMPtr<jsdIExecutionHook> mBreakpointHook;
1.292 + nsCOMPtr<jsdIExecutionHook> mDebugHook;
1.293 + nsCOMPtr<jsdIExecutionHook> mDebuggerHook;
1.294 + nsCOMPtr<jsdIExecutionHook> mInterruptHook;
1.295 + nsCOMPtr<jsdIScriptHook> mScriptHook;
1.296 + nsCOMPtr<jsdIExecutionHook> mThrowHook;
1.297 + nsCOMPtr<jsdICallHook> mTopLevelHook;
1.298 + nsCOMPtr<jsdICallHook> mFunctionHook;
1.299 + nsCOMPtr<jsdIActivationCallback> mActivationCallback;
1.300 +
1.301 + // True if we have ever printed a warning about JSD being deprecated.
1.302 + // We only ever print the warning once.
1.303 + bool mWarnedAboutDeprecation;
1.304 +
1.305 + // True if the next call to asyncOn should not produce a warning,
1.306 + // because the consumer called jsdIDebuggerService::acknowledgeDeprecation.
1.307 + bool mDeprecationAcknowledged;
1.308 +};
1.309 +
1.310 +#endif /* JSDSERVICE_H___ */
1.311 +
1.312 +
1.313 +/* graveyard */
1.314 +
1.315 +#if 0
1.316 +
1.317 +class jsdContext : public jsdIContext
1.318 +{
1.319 + public:
1.320 + NS_DECL_THREADSAFE_ISUPPORTS
1.321 + NS_DECL_JSDICONTEXT
1.322 +
1.323 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.324 + jsdContext (JSDContext *aCx) : mCx(aCx)
1.325 + {
1.326 + printf ("++++++ jsdContext\n");
1.327 + }
1.328 +
1.329 + static jsdIContext *FromPtr (JSDContext *aCx)
1.330 + {
1.331 + if (!aCx)
1.332 + return nullptr;
1.333 +
1.334 + void *data = JSD_GetContextPrivate (aCx);
1.335 + jsdIContext *rv;
1.336 +
1.337 + if (data) {
1.338 + rv = static_cast<jsdIContext *>(data);
1.339 + } else {
1.340 + rv = new jsdContext (aCx);
1.341 + NS_IF_ADDREF(rv); // addref for the SetContextPrivate
1.342 + JSD_SetContextPrivate (aCx, static_cast<void *>(rv));
1.343 + }
1.344 +
1.345 + NS_IF_ADDREF(rv); // addref for the return value
1.346 + return rv;
1.347 + }
1.348 +
1.349 + virtual ~jsdContext() { printf ("------ ~jsdContext\n"); }
1.350 + private:
1.351 + jsdContext(); /* no implementation */
1.352 + jsdContext(const jsdContext&); /* no implementation */
1.353 +
1.354 + JSDContext *mCx;
1.355 +};
1.356 +
1.357 +class jsdThreadState : public jsdIThreadState
1.358 +{
1.359 + public:
1.360 + NS_DECL_THREADSAFE_ISUPPORTS
1.361 + NS_DECL_JSDITHREADSTATE
1.362 +
1.363 + /* you'll normally use use FromPtr() instead of directly constructing one */
1.364 + jsdThreadState (JSDContext *aCx, JSDThreadState *aThreadState) :
1.365 + mCx(aCx), mThreadState(aThreadState)
1.366 + {
1.367 + }
1.368 +
1.369 + /* XXX These things are only valid for a short period of time, they reflect
1.370 + * state in the js engine that will go away after stepping past wherever
1.371 + * we were stopped at when this was created. We could keep a list of every
1.372 + * instance of this we've created, and "invalidate" them before we let the
1.373 + * engine continue. The next time we need a threadstate, we can search the
1.374 + * list to find an invalidated one, and just reuse it.
1.375 + */
1.376 + static jsdIThreadState *FromPtr (JSDContext *aCx,
1.377 + JSDThreadState *aThreadState)
1.378 + {
1.379 + if (!aThreadState)
1.380 + return nullptr;
1.381 +
1.382 + jsdIThreadState *rv = new jsdThreadState (aCx, aThreadState);
1.383 + NS_IF_ADDREF(rv);
1.384 + return rv;
1.385 + }
1.386 +
1.387 + private:
1.388 + jsdThreadState(); /* no implementation */
1.389 + jsdThreadState(const jsdThreadState&); /* no implementation */
1.390 +
1.391 + JSDContext *mCx;
1.392 + JSDThreadState *mThreadState;
1.393 +};
1.394 +
1.395 +#endif
