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gecko/js/src/jsdbgapi.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=99:
*
* ***** 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):
*
* 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 ***** */
#ifndef jsdbgapi_h___
#define jsdbgapi_h___
/*
* JS debugger API.
*/
#include "jsapi.h"
#include "jsopcode.h"
#include "jsprvtd.h"
JS_BEGIN_EXTERN_C
extern JS_PUBLIC_API(JSCrossCompartmentCall *)
JS_EnterCrossCompartmentCallScript(JSContext *cx, JSScript *target);
#ifdef __cplusplus
JS_END_EXTERN_C
namespace JS {
class JS_PUBLIC_API(AutoEnterScriptCompartment)
{
JSCrossCompartmentCall *call;
public:
AutoEnterScriptCompartment() : call(NULL) {}
bool enter(JSContext *cx, JSScript *target);
bool entered() const { return call != NULL; }
~AutoEnterScriptCompartment() {
if (call && call != reinterpret_cast<JSCrossCompartmentCall*>(1))
JS_LeaveCrossCompartmentCall(call);
}
};
} /* namespace JS */
JS_BEGIN_EXTERN_C
#endif
extern JS_PUBLIC_API(JSScript *)
JS_GetScriptFromObject(JSObject *scriptObject);
extern JS_PUBLIC_API(JSString *)
JS_DecompileScript(JSContext *cx, JSScript *script, const char *name, uintN indent);
/*
* Currently, we only support runtime-wide debugging. In the future, we should
* be able to support compartment-wide debugging.
*/
extern JS_PUBLIC_API(void)
JS_SetRuntimeDebugMode(JSRuntime *rt, JSBool debug);
/*
* Debug mode is a compartment-wide mode that enables a debugger to attach
* to and interact with running methodjit-ed frames. In particular, it causes
* every function to be compiled as if an eval was present (so eval-in-frame)
* can work, and it ensures that functions can be re-JITed for other debug
* features. In general, it is not safe to interact with frames that were live
* before debug mode was enabled. For this reason, it is also not safe to
* enable debug mode while frames are live.
*/
/* Get current state of debugging mode. */
extern JS_PUBLIC_API(JSBool)
JS_GetDebugMode(JSContext *cx);
/*
* Turn on/off debugging mode for a single compartment. This must be
* called from the main thread and the compartment must be associated
* with the main thread.
*/
JS_FRIEND_API(JSBool)
JS_SetDebugModeForCompartment(JSContext *cx, JSCompartment *comp, JSBool debug);
/*
* Turn on/off debugging mode for a context's compartment.
*/
JS_FRIEND_API(JSBool)
JS_SetDebugMode(JSContext *cx, JSBool debug);
/* Turn on single step mode. Requires debug mode. */
extern JS_FRIEND_API(JSBool)
js_SetSingleStepMode(JSContext *cx, JSScript *script, JSBool singleStep);
/* Turn on single step mode. */
extern JS_PUBLIC_API(JSBool)
JS_SetSingleStepMode(JSContext *cx, JSScript *script, JSBool singleStep);
/*
* Unexported library-private helper used to unpatch all traps in a script.
* Returns script->code if script has no traps, else a JS_malloc'ed copy of
* script->code which the caller must JS_free, or null on JS_malloc OOM.
*/
extern jsbytecode *
js_UntrapScriptCode(JSContext *cx, JSScript *script);
/* The closure argument will be marked. */
extern JS_PUBLIC_API(JSBool)
JS_SetTrap(JSContext *cx, JSScript *script, jsbytecode *pc,
JSTrapHandler handler, jsval closure);
extern JS_PUBLIC_API(JSOp)
JS_GetTrapOpcode(JSContext *cx, JSScript *script, jsbytecode *pc);
extern JS_PUBLIC_API(void)
JS_ClearTrap(JSContext *cx, JSScript *script, jsbytecode *pc,
JSTrapHandler *handlerp, jsval *closurep);
extern JS_PUBLIC_API(void)
JS_ClearScriptTraps(JSContext *cx, JSScript *script);
extern JS_PUBLIC_API(void)
JS_ClearAllTraps(JSContext *cx);
extern JS_PUBLIC_API(JSTrapStatus)
JS_HandleTrap(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval);
extern JS_PUBLIC_API(JSBool)
JS_SetInterrupt(JSRuntime *rt, JSInterruptHook handler, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_ClearInterrupt(JSRuntime *rt, JSInterruptHook *handlerp, void **closurep);
/************************************************************************/
extern JS_PUBLIC_API(JSBool)
JS_SetWatchPoint(JSContext *cx, JSObject *obj, jsid id,
JSWatchPointHandler handler, JSObject *closure);
extern JS_PUBLIC_API(JSBool)
JS_ClearWatchPoint(JSContext *cx, JSObject *obj, jsid id,
JSWatchPointHandler *handlerp, JSObject **closurep);
extern JS_PUBLIC_API(JSBool)
JS_ClearWatchPointsForObject(JSContext *cx, JSObject *obj);
extern JS_PUBLIC_API(JSBool)
JS_ClearAllWatchPoints(JSContext *cx);
#ifdef JS_HAS_OBJ_WATCHPOINT
/*
* Hide these non-API function prototypes by testing whether the internal
* header file "jsversion.h" has been included.
*/
extern JSBool
js_TraceWatchPoints(JSTracer *trc);
extern void
js_SweepWatchPoints(JSContext *cx);
#ifdef __cplusplus
extern JSBool
js_watch_set(JSContext *cx, JSObject *obj, jsid id, JSBool strict, js::Value *vp);
namespace js {
bool
IsWatchedProperty(JSContext *cx, const Shape *shape);
}
#endif
#endif /* JS_HAS_OBJ_WATCHPOINT */
/************************************************************************/
extern JS_PUBLIC_API(uintN)
JS_PCToLineNumber(JSContext *cx, JSScript *script, jsbytecode *pc);
extern JS_PUBLIC_API(jsbytecode *)
JS_LineNumberToPC(JSContext *cx, JSScript *script, uintN lineno);
extern JS_PUBLIC_API(jsbytecode *)
JS_EndPC(JSContext *cx, JSScript *script);
extern JS_PUBLIC_API(uintN)
JS_GetFunctionArgumentCount(JSContext *cx, JSFunction *fun);
extern JS_PUBLIC_API(JSBool)
JS_FunctionHasLocalNames(JSContext *cx, JSFunction *fun);
/*
* N.B. The mark is in the context temp pool and thus the caller must take care
* to call JS_ReleaseFunctionLocalNameArray in a LIFO manner (wrt to any other
* call that may use the temp pool.
*/
extern JS_PUBLIC_API(jsuword *)
JS_GetFunctionLocalNameArray(JSContext *cx, JSFunction *fun, void **markp);
extern JS_PUBLIC_API(JSAtom *)
JS_LocalNameToAtom(jsuword w);
extern JS_PUBLIC_API(JSString *)
JS_AtomKey(JSAtom *atom);
extern JS_PUBLIC_API(void)
JS_ReleaseFunctionLocalNameArray(JSContext *cx, void *mark);
extern JS_PUBLIC_API(JSScript *)
JS_GetFunctionScript(JSContext *cx, JSFunction *fun);
extern JS_PUBLIC_API(JSNative)
JS_GetFunctionNative(JSContext *cx, JSFunction *fun);
extern JS_PUBLIC_API(JSPrincipals *)
JS_GetScriptPrincipals(JSContext *cx, JSScript *script);
/*
* Stack Frame Iterator
*
* Used to iterate through the JS stack frames to extract
* information from the frames.
*/
extern JS_PUBLIC_API(JSStackFrame *)
JS_FrameIterator(JSContext *cx, JSStackFrame **iteratorp);
extern JS_PUBLIC_API(JSScript *)
JS_GetFrameScript(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(jsbytecode *)
JS_GetFramePC(JSContext *cx, JSStackFrame *fp);
/*
* Get the closest scripted frame below fp. If fp is null, start from cx->fp.
*/
extern JS_PUBLIC_API(JSStackFrame *)
JS_GetScriptedCaller(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(void *)
JS_GetFrameAnnotation(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(void)
JS_SetFrameAnnotation(JSContext *cx, JSStackFrame *fp, void *annotation);
extern JS_PUBLIC_API(void *)
JS_GetFramePrincipalArray(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSBool)
JS_IsScriptFrame(JSContext *cx, JSStackFrame *fp);
/* this is deprecated, use JS_GetFrameScopeChain instead */
extern JS_PUBLIC_API(JSObject *)
JS_GetFrameObject(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSObject *)
JS_GetFrameScopeChain(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSObject *)
JS_GetFrameCallObject(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSBool)
JS_GetFrameThis(JSContext *cx, JSStackFrame *fp, jsval *thisv);
extern JS_PUBLIC_API(JSFunction *)
JS_GetFrameFunction(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSObject *)
JS_GetFrameFunctionObject(JSContext *cx, JSStackFrame *fp);
/* XXXrginda Initially published with typo */
#define JS_IsContructorFrame JS_IsConstructorFrame
extern JS_PUBLIC_API(JSBool)
JS_IsConstructorFrame(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(JSBool)
JS_IsDebuggerFrame(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(jsval)
JS_GetFrameReturnValue(JSContext *cx, JSStackFrame *fp);
extern JS_PUBLIC_API(void)
JS_SetFrameReturnValue(JSContext *cx, JSStackFrame *fp, jsval rval);
/**
* Return fp's callee function object (fp->callee) if it has one. Note that
* this API cannot fail. A null return means "no callee": fp is a global or
* eval-from-global frame, not a call frame.
*
* This API began life as an infallible getter, but now it can return either:
*
* 1. An optimized closure that was compiled assuming the function could not
* escape and be called from sites the compiler could not see.
*
* 2. A "joined function object", an optimization whereby SpiderMonkey avoids
* creating fresh function objects for every evaluation of a function
* expression that is used only once by a consumer that either promises to
* clone later when asked for the value or that cannot leak the value.
*
* Because Mozilla's Gecko embedding of SpiderMonkey (and no doubt other
* embeddings) calls this API in potentially performance-sensitive ways (e.g.
* in nsContentUtils::GetDocumentFromCaller), we are leaving this API alone. It
* may now return an unwrapped non-escaping optimized closure, or a joined
* function object. Such optimized objects may work well if called from the
* correct context, never mutated or compared for identity, etc.
*
* However, if you really need to get the same callee object that JS code would
* see, which means undoing the optimizations, where an undo attempt can fail,
* then use JS_GetValidFrameCalleeObject.
*/
extern JS_PUBLIC_API(JSObject *)
JS_GetFrameCalleeObject(JSContext *cx, JSStackFrame *fp);
/**
* Return fp's callee function object after running the deferred closure
* cloning "method read barrier". This API can fail! If the frame has no
* callee, this API returns true with JSVAL_IS_VOID(*vp).
*/
extern JS_PUBLIC_API(JSBool)
JS_GetValidFrameCalleeObject(JSContext *cx, JSStackFrame *fp, jsval *vp);
/************************************************************************/
extern JS_PUBLIC_API(const char *)
JS_GetScriptFilename(JSContext *cx, JSScript *script);
extern JS_PUBLIC_API(uintN)
JS_GetScriptBaseLineNumber(JSContext *cx, JSScript *script);
extern JS_PUBLIC_API(uintN)
JS_GetScriptLineExtent(JSContext *cx, JSScript *script);
extern JS_PUBLIC_API(JSVersion)
JS_GetScriptVersion(JSContext *cx, JSScript *script);
/************************************************************************/
/*
* Hook setters for script creation and destruction, see jsprvtd.h for the
* typedefs. These macros provide binary compatibility and newer, shorter
* synonyms.
*/
#define JS_SetNewScriptHook JS_SetNewScriptHookProc
#define JS_SetDestroyScriptHook JS_SetDestroyScriptHookProc
extern JS_PUBLIC_API(void)
JS_SetNewScriptHook(JSRuntime *rt, JSNewScriptHook hook, void *callerdata);
extern JS_PUBLIC_API(void)
JS_SetDestroyScriptHook(JSRuntime *rt, JSDestroyScriptHook hook,
void *callerdata);
/************************************************************************/
extern JS_PUBLIC_API(JSBool)
JS_EvaluateUCInStackFrame(JSContext *cx, JSStackFrame *fp,
const jschar *chars, uintN length,
const char *filename, uintN lineno,
jsval *rval);
extern JS_PUBLIC_API(JSBool)
JS_EvaluateInStackFrame(JSContext *cx, JSStackFrame *fp,
const char *bytes, uintN length,
const char *filename, uintN lineno,
jsval *rval);
/************************************************************************/
typedef struct JSPropertyDesc {
jsval id; /* primary id, atomized string, or int */
jsval value; /* property value */
uint8 flags; /* flags, see below */
uint8 spare; /* unused */
uint16 slot; /* argument/variable slot */
jsval alias; /* alias id if JSPD_ALIAS flag */
} JSPropertyDesc;
#define JSPD_ENUMERATE 0x01 /* visible to for/in loop */
#define JSPD_READONLY 0x02 /* assignment is error */
#define JSPD_PERMANENT 0x04 /* property cannot be deleted */
#define JSPD_ALIAS 0x08 /* property has an alias id */
#define JSPD_ARGUMENT 0x10 /* argument to function */
#define JSPD_VARIABLE 0x20 /* local variable in function */
#define JSPD_EXCEPTION 0x40 /* exception occurred fetching the property, */
/* value is exception */
#define JSPD_ERROR 0x80 /* native getter returned JS_FALSE without */
/* throwing an exception */
typedef struct JSPropertyDescArray {
uint32 length; /* number of elements in array */
JSPropertyDesc *array; /* alloc'd by Get, freed by Put */
} JSPropertyDescArray;
typedef struct JSScopeProperty JSScopeProperty;
extern JS_PUBLIC_API(JSScopeProperty *)
JS_PropertyIterator(JSObject *obj, JSScopeProperty **iteratorp);
extern JS_PUBLIC_API(JSBool)
JS_GetPropertyDesc(JSContext *cx, JSObject *obj, JSScopeProperty *shape,
JSPropertyDesc *pd);
extern JS_PUBLIC_API(JSBool)
JS_GetPropertyDescArray(JSContext *cx, JSObject *obj, JSPropertyDescArray *pda);
extern JS_PUBLIC_API(void)
JS_PutPropertyDescArray(JSContext *cx, JSPropertyDescArray *pda);
/************************************************************************/
extern JS_PUBLIC_API(JSBool)
JS_SetDebuggerHandler(JSRuntime *rt, JSDebuggerHandler hook, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_SetSourceHandler(JSRuntime *rt, JSSourceHandler handler, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_SetExecuteHook(JSRuntime *rt, JSInterpreterHook hook, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_SetCallHook(JSRuntime *rt, JSInterpreterHook hook, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_SetThrowHook(JSRuntime *rt, JSThrowHook hook, void *closure);
extern JS_PUBLIC_API(JSBool)
JS_SetDebugErrorHook(JSRuntime *rt, JSDebugErrorHook hook, void *closure);
/************************************************************************/
extern JS_PUBLIC_API(size_t)
JS_GetObjectTotalSize(JSContext *cx, JSObject *obj);
extern JS_PUBLIC_API(size_t)
JS_GetFunctionTotalSize(JSContext *cx, JSFunction *fun);
extern JS_PUBLIC_API(size_t)
JS_GetScriptTotalSize(JSContext *cx, JSScript *script);
/*
* Return true if obj is a "system" object, that is, one created by
* JS_NewSystemObject with the system flag set and not JS_NewObject.
*
* What "system" means is up to the API client, but it can be used to implement
* access control policies based on script filenames and their prefixes, using
* JS_FlagScriptFilenamePrefix and JS_GetTopScriptFilenameFlags.
*/
extern JS_PUBLIC_API(JSBool)
JS_IsSystemObject(JSContext *cx, JSObject *obj);
/*
* Mark an object as being a system object. This should be called immediately
* after allocating the object. A system object is an object for which
* JS_IsSystemObject returns true.
*/
extern JS_PUBLIC_API(JSBool)
JS_MakeSystemObject(JSContext *cx, JSObject *obj);
/************************************************************************/
extern JS_FRIEND_API(void)
js_RevertVersion(JSContext *cx);
extern JS_PUBLIC_API(const JSDebugHooks *)
JS_GetGlobalDebugHooks(JSRuntime *rt);
extern JS_PUBLIC_API(JSDebugHooks *)
JS_SetContextDebugHooks(JSContext *cx, const JSDebugHooks *hooks);
/* Disable debug hooks for this context. */
extern JS_PUBLIC_API(JSDebugHooks *)
JS_ClearContextDebugHooks(JSContext *cx);
extern JS_PUBLIC_API(JSBool)
JS_StartProfiling();
extern JS_PUBLIC_API(void)
JS_StopProfiling();
extern JS_PUBLIC_API(JSBool)
JS_DefineProfilingFunctions(JSContext *cx, JSObject *obj);
#ifdef MOZ_CALLGRIND
extern JS_FRIEND_API(JSBool)
js_StopCallgrind(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_StartCallgrind(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_DumpCallgrind(JSContext *cx, uintN argc, jsval *vp);
#endif /* MOZ_CALLGRIND */
#ifdef MOZ_VTUNE
extern JS_FRIEND_API(JSBool)
js_StartVtune(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_StopVtune(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_PauseVtune(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_ResumeVtune(JSContext *cx, uintN argc, jsval *vp);
#endif /* MOZ_VTUNE */
#ifdef MOZ_TRACEVIS
extern JS_FRIEND_API(JSBool)
js_InitEthogram(JSContext *cx, uintN argc, jsval *vp);
extern JS_FRIEND_API(JSBool)
js_ShutdownEthogram(JSContext *cx, uintN argc, jsval *vp);
#endif /* MOZ_TRACEVIS */
#ifdef MOZ_TRACE_JSCALLS
typedef void (*JSFunctionCallback)(const JSFunction *fun,
const JSScript *scr,
const JSContext *cx,
int entering);
/*
* The callback is expected to be quick and noninvasive. It should not
* trigger interrupts, turn on debugging, or produce uncaught JS
* exceptions. The state of the stack and registers in the context
* cannot be relied upon, since this callback may be invoked directly
* from either JIT. The 'entering' field means we are entering a
* function if it is positive, leaving a function if it is zero or
* negative.
*/
extern JS_PUBLIC_API(void)
JS_SetFunctionCallback(JSContext *cx, JSFunctionCallback fcb);
extern JS_PUBLIC_API(JSFunctionCallback)
JS_GetFunctionCallback(JSContext *cx);
#endif /* MOZ_TRACE_JSCALLS */
JS_END_EXTERN_C
#endif /* jsdbgapi_h___ */
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