gecko-dev/js/jsd/jsd_xpc.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef JSDSERVICE_H___
#define JSDSERVICE_H___
#include "jsdIDebuggerService.h"
#include "jsdebug.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nspr.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
// #if defined(DEBUG_rginda_l)
// # define DEBUG_verbose
// #endif
struct LiveEphemeral {
/* link in a chain of live values list */
PRCList links;
jsdIEphemeral *value;
void *key;
};
struct PCMapEntry {
uint32_t pc, line;
};
/*******************************************************************************
* reflected jsd data structures
*******************************************************************************/
class jsdObject MOZ_FINAL : public jsdIObject
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDIOBJECT
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdObject (JSDContext *aCx, JSDObject *aObject) :
mCx(aCx), mObject(aObject)
{
}
static jsdIObject *FromPtr (JSDContext *aCx,
JSDObject *aObject)
{
if (!aObject)
return nullptr;
jsdIObject *rv = new jsdObject (aCx, aObject);
NS_IF_ADDREF(rv);
return rv;
}
private:
jsdObject(); /* no implementation */
jsdObject(const jsdObject&); /* no implementation */
JSDContext *mCx;
JSDObject *mObject;
};
class jsdProperty : public jsdIProperty
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDIPROPERTY
NS_DECL_JSDIEPHEMERAL
jsdProperty (JSDContext *aCx, JSDProperty *aProperty);
virtual ~jsdProperty ();
static jsdIProperty *FromPtr (JSDContext *aCx,
JSDProperty *aProperty)
{
if (!aProperty)
return nullptr;
jsdIProperty *rv = new jsdProperty (aCx, aProperty);
NS_IF_ADDREF(rv);
return rv;
}
static void InvalidateAll();
private:
jsdProperty(); /* no implementation */
jsdProperty(const jsdProperty&); /* no implementation */
bool mValid;
LiveEphemeral mLiveListEntry;
JSDContext *mCx;
JSDProperty *mProperty;
};
class jsdScript : public jsdIScript
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDISCRIPT
NS_DECL_JSDIEPHEMERAL
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdScript (JSDContext *aCx, JSDScript *aScript);
virtual ~jsdScript();
static jsdIScript *FromPtr (JSDContext *aCx, JSDScript *aScript)
{
if (!aScript)
return nullptr;
void *data = JSD_GetScriptPrivate (aScript);
jsdIScript *rv;
if (data) {
rv = static_cast<jsdIScript *>(data);
} else {
rv = new jsdScript (aCx, aScript);
NS_IF_ADDREF(rv); /* addref for the SetScriptPrivate, released in
* Invalidate() */
JSD_SetScriptPrivate (aScript, static_cast<void *>(rv));
}
NS_IF_ADDREF(rv); /* addref for return value */
return rv;
}
static void InvalidateAll();
private:
static uint32_t LastTag;
jsdScript(); /* no implementation */
jsdScript (const jsdScript&); /* no implementation */
PCMapEntry* CreatePPLineMap();
uint32_t PPPcToLine(uint32_t aPC);
uint32_t PPLineToPc(uint32_t aLine);
bool mValid;
uint32_t mTag;
JSDContext *mCx;
JSDScript *mScript;
nsCString *mFileName;
nsCString *mFunctionName;
uint32_t mBaseLineNumber, mLineExtent;
PCMapEntry *mPPLineMap;
uint32_t mPCMapSize;
uintptr_t mFirstPC;
};
uint32_t jsdScript::LastTag = 0;
class jsdContext : public jsdIContext
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDICONTEXT
NS_DECL_JSDIEPHEMERAL
jsdContext (JSDContext *aJSDCx, JSContext *aJSCx, nsISupports *aISCx);
virtual ~jsdContext();
static void InvalidateAll();
static jsdIContext *FromPtr (JSDContext *aJSDCx, JSContext *aJSCx);
private:
static uint32_t LastTag;
jsdContext (); /* no implementation */
jsdContext (const jsdContext&); /* no implementation */
bool mValid;
// The API exposed by JSD here is problematic, because it allows for per-
// JSContext script disabling, which no longer exists in the platform.
// The only consumer here in practice is Firebug, which makes sure to re-
// enable any disabled script before navigation. But if some other consumer
// were to disable script, navigate, and try to re-enable it, we'd end up
// with an unmatched UnblockScript call, which violates platform invariants.
// So we make a half-hearted attempt to detect this by storing the Window ID
// of the scope for which we disabled script.
uint64_t mScriptDisabledForWindowWithID;
bool IsScriptEnabled() { return !mScriptDisabledForWindowWithID; }
LiveEphemeral mLiveListEntry;
uint32_t mTag;
JSDContext *mJSDCx;
JSContext *mJSCx;
nsCOMPtr<nsISupports> mISCx;
};
uint32_t jsdContext::LastTag = 0;
class jsdStackFrame : public jsdIStackFrame
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDISTACKFRAME
NS_DECL_JSDIEPHEMERAL
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdStackFrame (JSDContext *aCx, JSDThreadState *aThreadState,
JSDStackFrameInfo *aStackFrameInfo);
virtual ~jsdStackFrame();
static void InvalidateAll();
static jsdIStackFrame* FromPtr (JSDContext *aCx,
JSDThreadState *aThreadState,
JSDStackFrameInfo *aStackFrameInfo);
private:
jsdStackFrame(); /* no implementation */
jsdStackFrame(const jsdStackFrame&); /* no implementation */
bool mValid;
LiveEphemeral mLiveListEntry;
JSDContext *mCx;
JSDThreadState *mThreadState;
JSDStackFrameInfo *mStackFrameInfo;
};
class jsdValue : public jsdIValue
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDIVALUE
NS_DECL_JSDIEPHEMERAL
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdValue (JSDContext *aCx, JSDValue *aValue);
virtual ~jsdValue();
static jsdIValue *FromPtr (JSDContext *aCx, JSDValue *aValue);
static void InvalidateAll();
private:
jsdValue(); /* no implementation */
jsdValue (const jsdScript&); /* no implementation */
bool mValid;
LiveEphemeral mLiveListEntry;
JSDContext *mCx;
JSDValue *mValue;
};
/******************************************************************************
* debugger service
******************************************************************************/
class jsdService : public jsdIDebuggerService
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_JSDIDEBUGGERSERVICE
NS_DECL_CYCLE_COLLECTION_CLASS(jsdService)
jsdService() : mOn(false), mPauseLevel(0),
mNestedLoopLevel(0), mCx(0), mRuntime(0), mErrorHook(0),
mBreakpointHook(0), mDebugHook(0), mDebuggerHook(0),
mInterruptHook(0), mScriptHook(0), mThrowHook(0),
mTopLevelHook(0), mFunctionHook(0),
mWarnedAboutDeprecation(false),
mDeprecationAcknowledged(false)
{
}
virtual ~jsdService();
static jsdService *GetService ();
bool CheckInterruptHook() { return !!mInterruptHook; }
nsresult DoPause(uint32_t *_rval, bool internalCall);
nsresult DoUnPause(uint32_t *_rval, bool internalCall);
private:
bool mOn;
uint32_t mPauseLevel;
uint32_t mNestedLoopLevel;
JSDContext *mCx;
JSRuntime *mRuntime;
nsCOMPtr<jsdIErrorHook> mErrorHook;
nsCOMPtr<jsdIExecutionHook> mBreakpointHook;
nsCOMPtr<jsdIExecutionHook> mDebugHook;
nsCOMPtr<jsdIExecutionHook> mDebuggerHook;
nsCOMPtr<jsdIExecutionHook> mInterruptHook;
nsCOMPtr<jsdIScriptHook> mScriptHook;
nsCOMPtr<jsdIExecutionHook> mThrowHook;
nsCOMPtr<jsdICallHook> mTopLevelHook;
nsCOMPtr<jsdICallHook> mFunctionHook;
nsCOMPtr<jsdIActivationCallback> mActivationCallback;
// True if we have ever printed a warning about JSD being deprecated.
// We only ever print the warning once.
bool mWarnedAboutDeprecation;
// True if the next call to asyncOn should not produce a warning,
// because the consumer called jsdIDebuggerService::acknowledgeDeprecation.
bool mDeprecationAcknowledged;
};
#endif /* JSDSERVICE_H___ */
/* graveyard */
#if 0
class jsdContext : public jsdIContext
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDICONTEXT
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdContext (JSDContext *aCx) : mCx(aCx)
{
printf ("++++++ jsdContext\n");
}
static jsdIContext *FromPtr (JSDContext *aCx)
{
if (!aCx)
return nullptr;
void *data = JSD_GetContextPrivate (aCx);
jsdIContext *rv;
if (data) {
rv = static_cast<jsdIContext *>(data);
} else {
rv = new jsdContext (aCx);
NS_IF_ADDREF(rv); // addref for the SetContextPrivate
JSD_SetContextPrivate (aCx, static_cast<void *>(rv));
}
NS_IF_ADDREF(rv); // addref for the return value
return rv;
}
virtual ~jsdContext() { printf ("------ ~jsdContext\n"); }
private:
jsdContext(); /* no implementation */
jsdContext(const jsdContext&); /* no implementation */
JSDContext *mCx;
};
class jsdThreadState : public jsdIThreadState
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_JSDITHREADSTATE
/* you'll normally use use FromPtr() instead of directly constructing one */
jsdThreadState (JSDContext *aCx, JSDThreadState *aThreadState) :
mCx(aCx), mThreadState(aThreadState)
{
}
/* XXX These things are only valid for a short period of time, they reflect
* state in the js engine that will go away after stepping past wherever
* we were stopped at when this was created. We could keep a list of every
* instance of this we've created, and "invalidate" them before we let the
* engine continue. The next time we need a threadstate, we can search the
* list to find an invalidated one, and just reuse it.
*/
static jsdIThreadState *FromPtr (JSDContext *aCx,
JSDThreadState *aThreadState)
{
if (!aThreadState)
return nullptr;
jsdIThreadState *rv = new jsdThreadState (aCx, aThreadState);
NS_IF_ADDREF(rv);
return rv;
}
private:
jsdThreadState(); /* no implementation */
jsdThreadState(const jsdThreadState&); /* no implementation */
JSDContext *mCx;
JSDThreadState *mThreadState;
};
#endif