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gecko-dev
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gecko-dev/js/jsd/jsd_high.c

355 строки
9.4 KiB
C
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
/*
* JavaScript Debugging support - 'High Level' functions
*/
#include "jsd.h"
/***************************************************************************/
/* XXX not 'static' because of old Mac CodeWarrior bug */
JSCList _jsd_context_list = JS_INIT_STATIC_CLIST(&_jsd_context_list);
/* these are used to connect JSD_SetUserCallbacks() with JSD_DebuggerOn() */
static JSD_UserCallbacks _callbacks;
static void* _user = NULL;
static JSRuntime* _jsrt = NULL;
#ifdef JSD_HAS_DANGEROUS_THREAD
static void* _dangerousThread = NULL;
#endif
#ifdef JSD_THREADSAFE
void* _jsd_global_lock = NULL;
#endif
#ifdef DEBUG
void JSD_ASSERT_VALID_CONTEXT(JSDContext* jsdc)
{
JS_ASSERT(jsdc->inited);
JS_ASSERT(jsdc->jsrt);
JS_ASSERT(jsdc->dumbContext);
JS_ASSERT(jsdc->glob);
}
#endif
static JSClass global_class = {
"JSDGlobal", 0,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub
};
static JSBool
_validateUserCallbacks(JSD_UserCallbacks* callbacks)
{
return !callbacks ||
(callbacks->size && callbacks->size <= sizeof(JSD_UserCallbacks));
}
static JSDContext*
_newJSDContext(JSRuntime* jsrt,
JSD_UserCallbacks* callbacks,
void* user)
{
JSDContext* jsdc = NULL;
if( ! jsrt )
return NULL;
if( ! _validateUserCallbacks(callbacks) )
return NULL;
jsdc = (JSDContext*) calloc(1, sizeof(JSDContext));
if( ! jsdc )
goto label_newJSDContext_failure;
if( ! JSD_INIT_LOCKS(jsdc) )
goto label_newJSDContext_failure;
JS_INIT_CLIST(&jsdc->links);
jsdc->jsrt = jsrt;
if( callbacks )
memcpy(&jsdc->userCallbacks, callbacks, callbacks->size);
jsdc->user = user;
#ifdef JSD_HAS_DANGEROUS_THREAD
jsdc->dangerousThread = _dangerousThread;
#endif
JS_INIT_CLIST(&jsdc->threadsStates);
JS_INIT_CLIST(&jsdc->scripts);
JS_INIT_CLIST(&jsdc->sources);
JS_INIT_CLIST(&jsdc->removedSources);
jsdc->sourceAlterCount = 1;
if( ! jsd_CreateAtomTable(jsdc) )
goto label_newJSDContext_failure;
if( ! jsd_InitObjectManager(jsdc) )
goto label_newJSDContext_failure;
jsdc->dumbContext = JS_NewContext(jsdc->jsrt, 256);
if( ! jsdc->dumbContext )
goto label_newJSDContext_failure;
jsdc->glob = JS_NewObject(jsdc->dumbContext, &global_class, NULL, NULL);
if( ! jsdc->glob )
goto label_newJSDContext_failure;
if( ! JS_InitStandardClasses(jsdc->dumbContext, jsdc->glob) )
goto label_newJSDContext_failure;
jsdc->inited = JS_TRUE;
JSD_LOCK();
JS_INSERT_LINK(&jsdc->links, &_jsd_context_list);
JSD_UNLOCK();
return jsdc;
label_newJSDContext_failure:
jsd_DestroyObjectManager(jsdc);
jsd_DestroyAtomTable(jsdc);
if( jsdc )
free(jsdc);
return NULL;
}
static void
_destroyJSDContext(JSDContext* jsdc)
{
JSD_ASSERT_VALID_CONTEXT(jsdc);
JSD_LOCK();
JS_REMOVE_LINK(&jsdc->links);
JSD_UNLOCK();
jsd_DestroyObjectManager(jsdc);
jsd_DestroyAtomTable(jsdc);
jsdc->inited = JS_FALSE;
/*
* We should free jsdc here, but we let it leak in case there are any
* asynchronous hooks calling into the system using it as a handle
*
* XXX we also leak the locks
*/
}
/***************************************************************************/
JSDContext*
jsd_DebuggerOnForUser(JSRuntime* jsrt,
JSD_UserCallbacks* callbacks,
void* user)
{
JSDContext* jsdc;
JSContext* iter = NULL;
jsdc = _newJSDContext(jsrt, callbacks, user);
if( ! jsdc )
return NULL;
/* set hooks here */
JS_SetNewScriptHookProc(jsdc->jsrt, jsd_NewScriptHookProc, jsdc);
JS_SetDestroyScriptHookProc(jsdc->jsrt, jsd_DestroyScriptHookProc, jsdc);
JS_SetDebuggerHandler(jsdc->jsrt, jsd_DebuggerHandler, jsdc);
JS_SetExecuteHook(jsdc->jsrt, jsd_InterpreterHook, jsdc);
JS_SetCallHook(jsdc->jsrt, jsd_InterpreterHook, jsdc);
JS_SetObjectHook(jsdc->jsrt, jsd_ObjectHook, jsdc);
JS_SetThrowHook(jsdc->jsrt, jsd_ThrowHandler, jsdc);
JS_SetDebugErrorHook(jsdc->jsrt, jsd_DebugErrorHook, jsdc);
#ifdef LIVEWIRE
LWDBG_SetNewScriptHookProc(jsd_NewScriptHookProc, jsdc);
#endif
if( jsdc->userCallbacks.setContext )
jsdc->userCallbacks.setContext(jsdc, jsdc->user);
return jsdc;
}
JSDContext*
jsd_DebuggerOn(void)
{
JS_ASSERT(_jsrt);
JS_ASSERT(_validateUserCallbacks(&_callbacks));
return jsd_DebuggerOnForUser(_jsrt, &_callbacks, _user);
}
void
jsd_DebuggerOff(JSDContext* jsdc)
{
/* clear hooks here */
JS_SetNewScriptHookProc(jsdc->jsrt, NULL, NULL);
JS_SetDestroyScriptHookProc(jsdc->jsrt, NULL, NULL);
JS_SetDebuggerHandler(jsdc->jsrt, NULL, NULL);
JS_SetExecuteHook(jsdc->jsrt, NULL, NULL);
JS_SetCallHook(jsdc->jsrt, NULL, NULL);
JS_SetObjectHook(jsdc->jsrt, NULL, NULL);
JS_SetThrowHook(jsdc->jsrt, NULL, NULL);
JS_SetDebugErrorHook(jsdc->jsrt, NULL, NULL);
#ifdef LIVEWIRE
LWDBG_SetNewScriptHookProc(NULL,NULL);
#endif
/* clean up */
JSD_LockScriptSubsystem(jsdc);
jsd_DestroyAllJSDScripts(jsdc);
JSD_UnlockScriptSubsystem(jsdc);
jsd_DestroyAllSources(jsdc);
_destroyJSDContext(jsdc);
if( jsdc->userCallbacks.setContext )
jsdc->userCallbacks.setContext(NULL, jsdc->user);
}
void
jsd_SetUserCallbacks(JSRuntime* jsrt, JSD_UserCallbacks* callbacks, void* user)
{
_jsrt = jsrt;
_user = user;
#ifdef JSD_HAS_DANGEROUS_THREAD
_dangerousThread = JSD_CURRENT_THREAD();
#endif
if( callbacks )
memcpy(&_callbacks, callbacks, sizeof(JSD_UserCallbacks));
else
memset(&_callbacks, 0 , sizeof(JSD_UserCallbacks));
}
JSDContext*
jsd_JSDContextForJSContext(JSContext* context)
{
JSDContext* iter;
JSDContext* jsdc = NULL;
JSRuntime* runtime = JS_GetRuntime(context);
JSD_LOCK();
for( iter = (JSDContext*)_jsd_context_list.next;
iter != (JSDContext*)&_jsd_context_list;
iter = (JSDContext*)iter->links.next )
{
if( runtime == iter->jsrt )
{
jsdc = iter;
break;
}
}
JSD_UNLOCK();
return jsdc;
}
JS_STATIC_DLL_CALLBACK(JSBool)
jsd_DebugErrorHook(JSContext *cx, const char *message,
JSErrorReport *report, void *closure)
{
JSDContext* jsdc = (JSDContext*) closure;
JSD_ErrorReporter errorReporter;
void* errorReporterData;
if( ! jsdc )
{
JS_ASSERT(0);
return JS_TRUE;
}
if( JSD_IS_DANGEROUS_THREAD(jsdc) )
return JS_TRUE;
/* local in case hook gets cleared on another thread */
JSD_LOCK();
errorReporter = jsdc->errorReporter;
errorReporterData = jsdc->errorReporterData;
JSD_UNLOCK();
if(!errorReporter)
return JS_TRUE;
switch(errorReporter(jsdc, cx, message, report, errorReporterData))
{
case JSD_ERROR_REPORTER_PASS_ALONG:
return JS_TRUE;
case JSD_ERROR_REPORTER_RETURN:
return JS_FALSE;
case JSD_ERROR_REPORTER_DEBUG:
{
jsval rval;
JSD_ExecutionHookProc hook;
void* hookData;
/* local in case hook gets cleared on another thread */
JSD_LOCK();
hook = jsdc->debugBreakHook;
hookData = jsdc->debugBreakHookData;
JSD_UNLOCK();
jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_DEBUG_REQUESTED,
hook, hookData, &rval);
/* XXX Should make this dependent on ExecutionHook retval */
return JS_TRUE;
}
case JSD_ERROR_REPORTER_CLEAR_RETURN:
if(report && JSREPORT_IS_EXCEPTION(report->flags))
JS_ClearPendingException(cx);
return JS_FALSE;
default:
JS_ASSERT(0);
break;
}
return JS_TRUE;
}
JSBool
jsd_SetErrorReporter(JSDContext* jsdc,
JSD_ErrorReporter reporter,
void* callerdata)
{
JSD_LOCK();
jsdc->errorReporter = reporter;
jsdc->errorReporterData = callerdata;
JSD_UNLOCK();
return JS_TRUE;
}
JSBool
jsd_GetErrorReporter(JSDContext* jsdc,
JSD_ErrorReporter* reporter,
void** callerdata)
{
JSD_LOCK();
if( reporter )
*reporter = jsdc->errorReporter;
if( callerdata )
*callerdata = jsdc->errorReporterData;
JSD_UNLOCK();
return JS_TRUE;
}
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