зеркало из https://github.com/mozilla/pjs.git
364 строки
9.6 KiB
C
364 строки
9.6 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* JavaScript Debugging support - Hook support
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*/
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#include "jsd.h"
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JSTrapStatus
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jsd_InterruptHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval,
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void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->interruptHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->interruptHook;
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hookData = jsdc->interruptHookData;
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JSD_UNLOCK();
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if (!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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#ifdef LIVEWIRE
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if( ! jsdlw_UserCodeAtPC(jsdc, jsdscript, (uintptr_t)pc) )
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return JSTRAP_CONTINUE;
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#endif
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_INTERRUPTED,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_DebuggerHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
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jsval *rval, void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->debuggerHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->debuggerHook;
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hookData = jsdc->debuggerHookData;
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JSD_UNLOCK();
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if(!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_DEBUGGER_KEYWORD,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_ThrowHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
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jsval *rval, void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->throwHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->throwHook;
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hookData = jsdc->throwHookData;
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JSD_UNLOCK();
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if (!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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JS_GetPendingException(cx, rval);
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_THROW,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_CallExecutionHook(JSDContext* jsdc,
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JSContext *cx,
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uintN type,
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JSD_ExecutionHookProc hook,
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void* hookData,
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jsval* rval)
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{
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uintN hookanswer = JSD_HOOK_THROW == type ?
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JSD_HOOK_RETURN_CONTINUE_THROW :
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JSD_HOOK_RETURN_CONTINUE;
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JSDThreadState* jsdthreadstate;
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if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc,cx)))
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{
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if ((type != JSD_HOOK_THROW && type != JSD_HOOK_INTERRUPTED) ||
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jsdc->flags & JSD_MASK_TOP_FRAME_ONLY ||
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!(jsdthreadstate->flags & TS_HAS_DISABLED_FRAME))
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{
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/*
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* if it's not a throw and it's not an interrupt,
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* or we're only masking the top frame,
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* or there are no disabled frames in this stack,
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* then call out.
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*/
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hookanswer = hook(jsdc, jsdthreadstate, type, hookData, rval);
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jsd_DestroyThreadState(jsdc, jsdthreadstate);
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}
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}
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switch(hookanswer)
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{
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case JSD_HOOK_RETURN_ABORT:
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case JSD_HOOK_RETURN_HOOK_ERROR:
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return JSTRAP_ERROR;
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case JSD_HOOK_RETURN_RET_WITH_VAL:
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return JSTRAP_RETURN;
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case JSD_HOOK_RETURN_THROW_WITH_VAL:
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return JSTRAP_THROW;
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case JSD_HOOK_RETURN_CONTINUE:
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break;
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case JSD_HOOK_RETURN_CONTINUE_THROW:
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/* only makes sense for jsd_ThrowHandler (which init'd rval) */
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JS_ASSERT(JSD_HOOK_THROW == type);
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return JSTRAP_THROW;
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default:
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JS_ASSERT(0);
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break;
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}
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return JSTRAP_CONTINUE;
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}
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JSBool
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jsd_CallCallHook (JSDContext* jsdc,
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JSContext *cx,
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uintN type,
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JSD_CallHookProc hook,
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void* hookData)
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{
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JSBool hookanswer;
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JSDThreadState* jsdthreadstate;
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hookanswer = JS_FALSE;
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if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc, cx)))
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{
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hookanswer = hook(jsdc, jsdthreadstate, type, hookData);
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jsd_DestroyThreadState(jsdc, jsdthreadstate);
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}
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return hookanswer;
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}
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JSBool
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jsd_SetInterruptHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->interruptHookData = callerdata;
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jsdc->interruptHook = hook;
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JS_SetInterrupt(jsdc->jsrt, jsd_InterruptHandler, (void*) jsdc);
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearInterruptHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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JS_ClearInterrupt(jsdc->jsrt, NULL, NULL );
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jsdc->interruptHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetDebugBreakHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->debugBreakHookData = callerdata;
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jsdc->debugBreakHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearDebugBreakHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->debugBreakHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetDebuggerHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->debuggerHookData = callerdata;
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jsdc->debuggerHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearDebuggerHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->debuggerHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetThrowHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->throwHookData = callerdata;
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jsdc->throwHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearThrowHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->throwHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetFunctionHook(JSDContext* jsdc,
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JSD_CallHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->functionHookData = callerdata;
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jsdc->functionHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearFunctionHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->functionHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetTopLevelHook(JSDContext* jsdc,
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JSD_CallHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->toplevelHookData = callerdata;
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jsdc->toplevelHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearTopLevelHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->toplevelHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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