mozilla
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gecko-dev
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gecko-dev/js/jsd/jsd_hook.c

332 строки
8.2 KiB
C
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
/*
* JavaScript Debugging support - Hook support
*/
#include "jsd.h"
JSTrapStatus
jsd_InterruptHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval,
void *closure)
{
JSDScript* jsdscript;
JSDContext* jsdc = (JSDContext*) closure;
JSD_ExecutionHookProc hook;
void* hookData;
if( ! jsdc || ! jsdc->inited )
return JSTRAP_CONTINUE;
if( JSD_IS_DANGEROUS_THREAD(jsdc) )
return JSTRAP_CONTINUE;
/* local in case jsdc->interruptHook gets cleared on another thread */
JSD_LOCK();
hook = jsdc->interruptHook;
hookData = jsdc->interruptHookData;
JSD_UNLOCK();
if (!hook)
return JSTRAP_CONTINUE;
JSD_LOCK_SCRIPTS(jsdc);
jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
JSD_UNLOCK_SCRIPTS(jsdc);
if( ! jsdscript )
return JSTRAP_CONTINUE;
#ifdef LIVEWIRE
if( ! jsdlw_UserCodeAtPC(jsdc, jsdscript, (uintptr_t)pc) )
return JSTRAP_CONTINUE;
#endif
return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_INTERRUPTED,
hook, hookData, rval);
}
JSTrapStatus
jsd_DebuggerHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
jsval *rval, void *closure)
{
JSDScript* jsdscript;
JSDContext* jsdc = (JSDContext*) closure;
JSD_ExecutionHookProc hook;
void* hookData;
if( ! jsdc || ! jsdc->inited )
return JSTRAP_CONTINUE;
if( JSD_IS_DANGEROUS_THREAD(jsdc) )
return JSTRAP_CONTINUE;
/* local in case jsdc->debuggerHook gets cleared on another thread */
JSD_LOCK();
hook = jsdc->debuggerHook;
hookData = jsdc->debuggerHookData;
JSD_UNLOCK();
if(!hook)
return JSTRAP_CONTINUE;
JSD_LOCK_SCRIPTS(jsdc);
jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
JSD_UNLOCK_SCRIPTS(jsdc);
if( ! jsdscript )
return JSTRAP_CONTINUE;
return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_DEBUGGER_KEYWORD,
hook, hookData, rval);
}
JSTrapStatus
jsd_ThrowHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
jsval *rval, void *closure)
{
JSDScript* jsdscript;
JSDContext* jsdc = (JSDContext*) closure;
JSD_ExecutionHookProc hook;
void* hookData;
if( ! jsdc || ! jsdc->inited )
return JSTRAP_CONTINUE;
if( JSD_IS_DANGEROUS_THREAD(jsdc) )
return JSTRAP_CONTINUE;
/* local in case jsdc->throwHook gets cleared on another thread */
JSD_LOCK();
hook = jsdc->throwHook;
hookData = jsdc->throwHookData;
JSD_UNLOCK();
if (!hook)
return JSTRAP_CONTINUE;
JSD_LOCK_SCRIPTS(jsdc);
jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
JSD_UNLOCK_SCRIPTS(jsdc);
if( ! jsdscript )
return JSTRAP_CONTINUE;
JS_GetPendingException(cx, rval);
return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_THROW,
hook, hookData, rval);
}
JSTrapStatus
jsd_CallExecutionHook(JSDContext* jsdc,
JSContext *cx,
unsigned type,
JSD_ExecutionHookProc hook,
void* hookData,
jsval* rval)
{
unsigned hookanswer = JSD_HOOK_THROW == type ?
JSD_HOOK_RETURN_CONTINUE_THROW :
JSD_HOOK_RETURN_CONTINUE;
JSDThreadState* jsdthreadstate;
if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc,cx)))
{
if ((type != JSD_HOOK_THROW && type != JSD_HOOK_INTERRUPTED) ||
jsdc->flags & JSD_MASK_TOP_FRAME_ONLY ||
!(jsdthreadstate->flags & TS_HAS_DISABLED_FRAME))
{
/*
* if it's not a throw and it's not an interrupt,
* or we're only masking the top frame,
* or there are no disabled frames in this stack,
* then call out.
*/
hookanswer = hook(jsdc, jsdthreadstate, type, hookData, rval);
jsd_DestroyThreadState(jsdc, jsdthreadstate);
}
}
switch(hookanswer)
{
case JSD_HOOK_RETURN_ABORT:
case JSD_HOOK_RETURN_HOOK_ERROR:
return JSTRAP_ERROR;
case JSD_HOOK_RETURN_RET_WITH_VAL:
return JSTRAP_RETURN;
case JSD_HOOK_RETURN_THROW_WITH_VAL:
return JSTRAP_THROW;
case JSD_HOOK_RETURN_CONTINUE:
break;
case JSD_HOOK_RETURN_CONTINUE_THROW:
/* only makes sense for jsd_ThrowHandler (which init'd rval) */
JS_ASSERT(JSD_HOOK_THROW == type);
return JSTRAP_THROW;
default:
JS_ASSERT(0);
break;
}
return JSTRAP_CONTINUE;
}
JSBool
jsd_CallCallHook (JSDContext* jsdc,
JSContext *cx,
unsigned type,
JSD_CallHookProc hook,
void* hookData)
{
JSBool hookanswer;
JSDThreadState* jsdthreadstate;
hookanswer = JS_FALSE;
if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc, cx)))
{
hookanswer = hook(jsdc, jsdthreadstate, type, hookData);
jsd_DestroyThreadState(jsdc, jsdthreadstate);
}
return hookanswer;
}
JSBool
jsd_SetInterruptHook(JSDContext* jsdc,
JSD_ExecutionHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->interruptHookData = callerdata;
jsdc->interruptHook = hook;
JS_SetInterrupt(jsdc->jsrt, jsd_InterruptHandler, (void*) jsdc);
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearInterruptHook(JSDContext* jsdc)
{
JSD_LOCK();
JS_ClearInterrupt(jsdc->jsrt, NULL, NULL );
jsdc->interruptHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_SetDebugBreakHook(JSDContext* jsdc,
JSD_ExecutionHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->debugBreakHookData = callerdata;
jsdc->debugBreakHook = hook;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearDebugBreakHook(JSDContext* jsdc)
{
JSD_LOCK();
jsdc->debugBreakHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_SetDebuggerHook(JSDContext* jsdc,
JSD_ExecutionHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->debuggerHookData = callerdata;
jsdc->debuggerHook = hook;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearDebuggerHook(JSDContext* jsdc)
{
JSD_LOCK();
jsdc->debuggerHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_SetThrowHook(JSDContext* jsdc,
JSD_ExecutionHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->throwHookData = callerdata;
jsdc->throwHook = hook;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearThrowHook(JSDContext* jsdc)
{
JSD_LOCK();
jsdc->throwHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_SetFunctionHook(JSDContext* jsdc,
JSD_CallHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->functionHookData = callerdata;
jsdc->functionHook = hook;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearFunctionHook(JSDContext* jsdc)
{
JSD_LOCK();
jsdc->functionHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_SetTopLevelHook(JSDContext* jsdc,
JSD_CallHookProc hook,
void* callerdata)
{
JSD_LOCK();
jsdc->toplevelHookData = callerdata;
jsdc->toplevelHook = hook;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_ClearTopLevelHook(JSDContext* jsdc)
{
JSD_LOCK();
jsdc->toplevelHook = NULL;
JSD_UNLOCK();
return JS_TRUE;
}
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