/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* ***** 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.org code. * * 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 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 ***** */ /* * JavaScript Debugging support - Script support */ #include "jsd.h" /* Comment this out to disable (NT specific) dumping as we go */ /* ** #ifdef DEBUG ** #define JSD_DUMP 1 ** #endif */ #define NOT_SET_YET -1 /***************************************************************************/ #ifdef DEBUG void JSD_ASSERT_VALID_SCRIPT(JSDScript* jsdscript) { JS_ASSERT(jsdscript); JS_ASSERT(jsdscript->script); } void JSD_ASSERT_VALID_EXEC_HOOK(JSDExecHook* jsdhook) { JS_ASSERT(jsdhook); JS_ASSERT(jsdhook->hook); } #endif #ifdef LIVEWIRE static JSBool HasFileExtention(const char* name, const char* ext) { int i; int len = strlen(ext); const char* p = strrchr(name,'.'); if( !p ) return JS_FALSE; p++; for(i = 0; i < len; i++ ) { JS_ASSERT(islower(ext[i])); if( 0 == p[i] || tolower(p[i]) != ext[i] ) return JS_FALSE; } if( 0 != p[i] ) return JS_FALSE; return JS_TRUE; } #endif /* LIVEWIRE */ static JSDScript* _newJSDScript(JSDContext* jsdc, JSContext *cx, JSScript *script, JSFunction* function) { JSDScript* jsdscript; uintN lineno; const char* raw_filename; JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc)); /* these are inlined javascript: urls and we can't handle them now */ lineno = (uintN) JS_GetScriptBaseLineNumber(cx, script); if( lineno == 0 ) return NULL; jsdscript = (JSDScript*) calloc(1, sizeof(JSDScript)); if( ! jsdscript ) return NULL; raw_filename = JS_GetScriptFilename(cx,script); JS_HashTableAdd(jsdc->scriptsTable, (void *)script, (void *)jsdscript); JS_APPEND_LINK(&jsdscript->links, &jsdc->scripts); jsdscript->jsdc = jsdc; jsdscript->script = script; jsdscript->function = function; jsdscript->lineBase = lineno; jsdscript->lineExtent = (uintN)NOT_SET_YET; jsdscript->data = NULL; #ifndef LIVEWIRE jsdscript->url = (char*) jsd_BuildNormalizedURL(raw_filename); #else jsdscript->app = LWDBG_GetCurrentApp(); if( jsdscript->app && raw_filename ) { jsdscript->url = jsdlw_BuildAppRelativeFilename(jsdscript->app, raw_filename); if( function ) { jsdscript->lwscript = LWDBG_GetScriptOfFunction(jsdscript->app, JS_GetFunctionName(function)); /* also, make sure this file is added to filelist if is .js file */ if( HasFileExtention(raw_filename,"js") || HasFileExtention(raw_filename,"sjs") ) { jsdlw_PreLoadSource(jsdc, jsdscript->app, raw_filename, JS_FALSE); } } else { jsdscript->lwscript = LWDBG_GetCurrentTopLevelScript(); } } #endif JS_INIT_CLIST(&jsdscript->hooks); return jsdscript; } static void _destroyJSDScript(JSDContext* jsdc, JSDScript* jsdscript) { JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc)); /* destroy all hooks */ jsd_ClearAllExecutionHooksForScript(jsdc, jsdscript); JS_REMOVE_LINK(&jsdscript->links); if(jsdscript->url) free(jsdscript->url); if (jsdscript->profileData) free(jsdscript->profileData); if(jsdscript) free(jsdscript); } /***************************************************************************/ #ifdef JSD_DUMP #ifndef XP_WIN void OutputDebugString (char *buf) { fprintf (stderr, "%s", buf); } #endif static void _dumpJSDScript(JSDContext* jsdc, JSDScript* jsdscript, const char* leadingtext) { const char* name; const char* fun; uintN base; uintN extent; char Buf[256]; name = jsd_GetScriptFilename(jsdc, jsdscript); fun = jsd_GetScriptFunctionName(jsdc, jsdscript); base = jsd_GetScriptBaseLineNumber(jsdc, jsdscript); extent = jsd_GetScriptLineExtent(jsdc, jsdscript); sprintf( Buf, "%sscript=%08X, %s, %s, %d-%d\n", leadingtext, (unsigned) jsdscript->script, name ? name : "no URL", fun ? fun : "no fun", base, base + extent - 1 ); OutputDebugString( Buf ); } static void _dumpJSDScriptList( JSDContext* jsdc ) { JSDScript* iterp = NULL; JSDScript* jsdscript = NULL; OutputDebugString( "*** JSDScriptDump\n" ); while( NULL != (jsdscript = jsd_IterateScripts(jsdc, &iterp)) ) _dumpJSDScript( jsdc, jsdscript, " script: " ); } #endif /* JSD_DUMP */ /***************************************************************************/ JS_STATIC_DLL_CALLBACK(JSHashNumber) jsd_hash_script(const void *key) { return ((JSHashNumber) key) >> 2; /* help lame MSVC1.5 on Win16 */ } JS_STATIC_DLL_CALLBACK(void *) jsd_alloc_script_table(void *priv, size_t size) { return malloc(size); } JS_STATIC_DLL_CALLBACK(void) jsd_free_script_table(void *priv, void *item) { free(item); } JS_STATIC_DLL_CALLBACK(JSHashEntry *) jsd_alloc_script_entry(void *priv, const void *item) { return (JSHashEntry*) malloc(sizeof(JSHashEntry)); } JS_STATIC_DLL_CALLBACK(void) jsd_free_script_entry(void *priv, JSHashEntry *he, uintN flag) { if (flag == HT_FREE_ENTRY) { _destroyJSDScript((JSDContext*) priv, (JSDScript*) he->value); free(he); } } static JSHashAllocOps script_alloc_ops = { jsd_alloc_script_table, jsd_free_script_table, jsd_alloc_script_entry, jsd_free_script_entry }; #ifndef JSD_SCRIPT_HASH_SIZE #define JSD_SCRIPT_HASH_SIZE 1024 #endif JSBool jsd_InitScriptManager(JSDContext* jsdc) { JS_INIT_CLIST(&jsdc->scripts); jsdc->scriptsTable = JS_NewHashTable(JSD_SCRIPT_HASH_SIZE, jsd_hash_script, JS_CompareValues, JS_CompareValues, &script_alloc_ops, (void*) jsdc); return (JSBool) jsdc->scriptsTable; } void jsd_DestroyScriptManager(JSDContext* jsdc) { JSD_LOCK_SCRIPTS(jsdc); if (jsdc->scriptsTable) JS_HashTableDestroy(jsdc->scriptsTable); JSD_UNLOCK_SCRIPTS(jsdc); } JSDScript* jsd_FindJSDScript( JSDContext* jsdc, JSScript *script ) { JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc)); return (JSDScript*) JS_HashTableLookup(jsdc->scriptsTable, (void *)script); } JSDProfileData* jsd_GetScriptProfileData(JSDContext* jsdc, JSDScript *script) { if (!script->profileData) script->profileData = (JSDProfileData*)calloc(1, sizeof(JSDProfileData)); return script->profileData; } uint32 jsd_GetScriptFlags(JSDContext *jsdc, JSDScript *script) { return script->flags; } void jsd_SetScriptFlags(JSDContext *jsdc, JSDScript *script, uint32 flags) { script->flags = flags; } uintN jsd_GetScriptCallCount(JSDContext* jsdc, JSDScript *script) { if (script->profileData) return script->profileData->callCount; return 0; } uintN jsd_GetScriptMaxRecurseDepth(JSDContext* jsdc, JSDScript *script) { if (script->profileData) return script->profileData->maxRecurseDepth; return 0; } jsdouble jsd_GetScriptMinExecutionTime(JSDContext* jsdc, JSDScript *script) { if (script->profileData) return script->profileData->minExecutionTime; return 0.0; } jsdouble jsd_GetScriptMaxExecutionTime(JSDContext* jsdc, JSDScript *script) { if (script->profileData) return script->profileData->maxExecutionTime; return 0.0; } jsdouble jsd_GetScriptTotalExecutionTime(JSDContext* jsdc, JSDScript *script) { if (script->profileData) return script->profileData->totalExecutionTime; return 0.0; } void jsd_ClearScriptProfileData(JSDContext* jsdc, JSDScript *script) { if (script->profileData) { free(script->profileData); script->profileData = NULL; } } JSScript * jsd_GetJSScript (JSDContext *jsdc, JSDScript *script) { return script->script; } JSFunction * jsd_GetJSFunction (JSDContext *jsdc, JSDScript *script) { return script->function; } JSDScript* jsd_IterateScripts(JSDContext* jsdc, JSDScript **iterp) { JSDScript *jsdscript = *iterp; JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc)); if( !jsdscript ) jsdscript = (JSDScript *)jsdc->scripts.next; if( jsdscript == (JSDScript *)&jsdc->scripts ) return NULL; *iterp = (JSDScript*) jsdscript->links.next; return jsdscript; } void * jsd_SetScriptPrivate(JSDScript *jsdscript, void *data) { void *rval = jsdscript->data; jsdscript->data = data; return rval; } void * jsd_GetScriptPrivate(JSDScript *jsdscript) { return jsdscript->data; } JSBool jsd_IsActiveScript(JSDContext* jsdc, JSDScript *jsdscript) { JSDScript *current; JS_ASSERT(JSD_SCRIPTS_LOCKED(jsdc)); for( current = (JSDScript *)jsdc->scripts.next; current != (JSDScript *)&jsdc->scripts; current = (JSDScript *)current->links.next ) { if(jsdscript == current) return JS_TRUE; } return JS_FALSE; } const char* jsd_GetScriptFilename(JSDContext* jsdc, JSDScript *jsdscript) { return jsdscript->url; } const char* jsd_GetScriptFunctionName(JSDContext* jsdc, JSDScript *jsdscript) { if( ! jsdscript->function ) return NULL; return JS_GetFunctionName(jsdscript->function); } uintN jsd_GetScriptBaseLineNumber(JSDContext* jsdc, JSDScript *jsdscript) { return jsdscript->lineBase; } uintN jsd_GetScriptLineExtent(JSDContext* jsdc, JSDScript *jsdscript) { if( NOT_SET_YET == (int)jsdscript->lineExtent ) jsdscript->lineExtent = JS_GetScriptLineExtent(jsdc->dumbContext, jsdscript->script); return jsdscript->lineExtent; } jsuword jsd_GetClosestPC(JSDContext* jsdc, JSDScript* jsdscript, uintN line) { #ifdef LIVEWIRE if( jsdscript && jsdscript->lwscript ) { uintN newline; jsdlw_RawToProcessedLineNumber(jsdc, jsdscript, line, &newline); if( line != newline ) line = newline; } #endif return (jsuword) JS_LineNumberToPC(jsdc->dumbContext, jsdscript->script, line ); } uintN jsd_GetClosestLine(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc) { uintN first = jsdscript->lineBase; uintN last = first + jsd_GetScriptLineExtent(jsdc, jsdscript) - 1; uintN line = JS_PCToLineNumber(jsdc->dumbContext, jsdscript->script, (jsbytecode*)pc); if( line < first ) return first; if( line > last ) return last; #ifdef LIVEWIRE if( jsdscript && jsdscript->lwscript ) { uintN newline; jsdlw_ProcessedToRawLineNumber(jsdc, jsdscript, line, &newline); line = newline; } #endif return line; } JSBool jsd_SetScriptHook(JSDContext* jsdc, JSD_ScriptHookProc hook, void* callerdata) { JSD_LOCK(); jsdc->scriptHook = hook; jsdc->scriptHookData = callerdata; JSD_UNLOCK(); return JS_TRUE; } JSBool jsd_GetScriptHook(JSDContext* jsdc, JSD_ScriptHookProc* hook, void** callerdata) { JSD_LOCK(); if( hook ) *hook = jsdc->scriptHook; if( callerdata ) *callerdata = jsdc->scriptHookData; JSD_UNLOCK(); return JS_TRUE; } /***************************************************************************/ void JS_DLL_CALLBACK jsd_NewScriptHookProc( JSContext *cx, const char *filename, /* URL this script loads from */ uintN lineno, /* line where this script starts */ JSScript *script, JSFunction *fun, void* callerdata ) { JSDScript* jsdscript = NULL; JSDContext* jsdc = (JSDContext*) callerdata; JSD_ScriptHookProc hook; void* hookData; JSD_ASSERT_VALID_CONTEXT(jsdc); if( JSD_IS_DANGEROUS_THREAD(jsdc) ) return; #ifdef LIVEWIRE if( 1 == lineno ) jsdlw_PreLoadSource(jsdc, LWDBG_GetCurrentApp(), filename, JS_TRUE ); #endif JSD_LOCK_SCRIPTS(jsdc); jsdscript = _newJSDScript(jsdc, cx, script, fun); JSD_UNLOCK_SCRIPTS(jsdc); if( ! jsdscript ) return; #ifdef JSD_DUMP JSD_LOCK_SCRIPTS(jsdc); _dumpJSDScript(jsdc, jsdscript, "***NEW Script: "); _dumpJSDScriptList( jsdc ); JSD_UNLOCK_SCRIPTS(jsdc); #endif /* JSD_DUMP */ /* local in case jsdc->scriptHook gets cleared on another thread */ JSD_LOCK(); hook = jsdc->scriptHook; hookData = jsdc->scriptHookData; JSD_UNLOCK(); if( hook ) hook(jsdc, jsdscript, JS_TRUE, hookData); } void JS_DLL_CALLBACK jsd_DestroyScriptHookProc( JSContext *cx, JSScript *script, void* callerdata ) { JSDScript* jsdscript = NULL; JSDContext* jsdc = (JSDContext*) callerdata; JSD_ScriptHookProc hook; void* hookData; JSD_ASSERT_VALID_CONTEXT(jsdc); if( JSD_IS_DANGEROUS_THREAD(jsdc) ) return; JSD_LOCK_SCRIPTS(jsdc); jsdscript = jsd_FindJSDScript(jsdc, script); JSD_UNLOCK_SCRIPTS(jsdc); if( ! jsdscript ) return; #ifdef JSD_DUMP JSD_LOCK_SCRIPTS(jsdc); _dumpJSDScript(jsdc, jsdscript, "***DESTROY Script: "); JSD_UNLOCK_SCRIPTS(jsdc); #endif /* JSD_DUMP */ /* local in case hook gets cleared on another thread */ JSD_LOCK(); hook = jsdc->scriptHook; hookData = jsdc->scriptHookData; JSD_UNLOCK(); if( hook ) hook(jsdc, jsdscript, JS_FALSE, hookData); JSD_LOCK_SCRIPTS(jsdc); JS_HashTableRemove(jsdc->scriptsTable, (void *)script); JSD_UNLOCK_SCRIPTS(jsdc); #ifdef JSD_DUMP JSD_LOCK_SCRIPTS(jsdc); _dumpJSDScriptList(jsdc); JSD_UNLOCK_SCRIPTS(jsdc); #endif /* JSD_DUMP */ } /***************************************************************************/ static JSDExecHook* _findHook(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc) { JSDExecHook* jsdhook; JSCList* list = &jsdscript->hooks; for( jsdhook = (JSDExecHook*)list->next; jsdhook != (JSDExecHook*)list; jsdhook = (JSDExecHook*)jsdhook->links.next ) { if (jsdhook->pc == pc) return jsdhook; } return NULL; } static JSBool _isActiveHook(JSDContext* jsdc, JSScript *script, JSDExecHook* jsdhook) { JSDExecHook* current; JSCList* list; JSDScript* jsdscript; JSD_LOCK_SCRIPTS(jsdc); jsdscript = jsd_FindJSDScript(jsdc, script); if( ! jsdscript) { JSD_UNLOCK_SCRIPTS(jsdc); return JS_FALSE; } list = &jsdscript->hooks; for( current = (JSDExecHook*)list->next; current != (JSDExecHook*)list; current = (JSDExecHook*)current->links.next ) { if(current == jsdhook) { JSD_UNLOCK_SCRIPTS(jsdc); return JS_TRUE; } } JSD_UNLOCK_SCRIPTS(jsdc); return JS_FALSE; } JSTrapStatus JS_DLL_CALLBACK jsd_TrapHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval, void *closure) { JSDExecHook* jsdhook = (JSDExecHook*) JSVAL_TO_PRIVATE(((jsval)closure)); JSD_ExecutionHookProc hook; void* hookData; JSDContext* jsdc; JSDScript* jsdscript; JSD_LOCK(); if( NULL == (jsdc = jsd_JSDContextForJSContext(cx)) || ! _isActiveHook(jsdc, script, jsdhook) ) { JSD_UNLOCK(); return JSTRAP_CONTINUE; } JSD_ASSERT_VALID_EXEC_HOOK(jsdhook); JS_ASSERT(jsdhook->pc == (jsuword)pc); JS_ASSERT(jsdhook->jsdscript->script == script); JS_ASSERT(jsdhook->jsdscript->jsdc == jsdc); hook = jsdhook->hook; hookData = jsdhook->callerdata; jsdscript = jsdhook->jsdscript; /* do not use jsdhook-> after this point */ JSD_UNLOCK(); if( ! jsdc || ! jsdc->inited ) return JSTRAP_CONTINUE; if( JSD_IS_DANGEROUS_THREAD(jsdc) ) return JSTRAP_CONTINUE; #ifdef LIVEWIRE if( ! jsdlw_UserCodeAtPC(jsdc, jsdscript, (jsuword)pc) ) return JSTRAP_CONTINUE; #endif return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_BREAKPOINT, hook, hookData, rval); } JSBool jsd_SetExecutionHook(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc, JSD_ExecutionHookProc hook, void* callerdata) { JSDExecHook* jsdhook; JSD_LOCK(); if( ! hook ) { jsd_ClearExecutionHook(jsdc, jsdscript, pc); JSD_UNLOCK(); return JS_TRUE; } jsdhook = _findHook(jsdc, jsdscript, pc); if( jsdhook ) { jsdhook->hook = hook; jsdhook->callerdata = callerdata; return JS_TRUE; } /* else... */ jsdhook = (JSDExecHook*)calloc(1, sizeof(JSDExecHook)); if( ! jsdhook ) return JS_FALSE; jsdhook->jsdscript = jsdscript; jsdhook->pc = pc; jsdhook->hook = hook; jsdhook->callerdata = callerdata; if( ! JS_SetTrap(jsdc->dumbContext, jsdscript->script, (jsbytecode*)pc, jsd_TrapHandler, (void*) PRIVATE_TO_JSVAL(jsdhook)) ) { free(jsdhook); return JS_FALSE; } JS_APPEND_LINK(&jsdhook->links, &jsdscript->hooks); JSD_UNLOCK(); return JS_TRUE; } JSBool jsd_ClearExecutionHook(JSDContext* jsdc, JSDScript* jsdscript, jsuword pc) { JSDExecHook* jsdhook; JSD_LOCK(); jsdhook = _findHook(jsdc, jsdscript, pc); if( ! jsdhook ) { JS_ASSERT(0); JSD_UNLOCK(); return JS_FALSE; } JS_ClearTrap(jsdc->dumbContext, jsdscript->script, (jsbytecode*)pc, NULL, NULL ); JS_REMOVE_LINK(&jsdhook->links); free(jsdhook); JSD_UNLOCK(); return JS_TRUE; } JSBool jsd_ClearAllExecutionHooksForScript(JSDContext* jsdc, JSDScript* jsdscript) { JSDExecHook* jsdhook; JSCList* list = &jsdscript->hooks; JSD_LOCK(); while( (JSDExecHook*)list != (jsdhook = (JSDExecHook*)list->next) ) { JS_REMOVE_LINK(&jsdhook->links); free(jsdhook); } JS_ClearScriptTraps(jsdc->dumbContext, jsdscript->script); JSD_UNLOCK(); return JS_TRUE; } JSBool jsd_ClearAllExecutionHooks(JSDContext* jsdc) { JSDScript* jsdscript; JSDScript* iterp = NULL; JSD_LOCK(); while( NULL != (jsdscript = jsd_IterateScripts(jsdc, &iterp)) ) jsd_ClearAllExecutionHooksForScript(jsdc, jsdscript); JSD_UNLOCK(); return JS_TRUE; } void jsd_ScriptCreated(JSDContext* jsdc, JSContext *cx, const char *filename, /* URL this script loads from */ uintN lineno, /* line where this script starts */ JSScript *script, JSFunction *fun) { jsd_NewScriptHookProc(cx, filename, lineno, script, fun, jsdc); } void jsd_ScriptDestroyed(JSDContext* jsdc, JSContext *cx, JSScript *script) { jsd_DestroyScriptHookProc(cx, script, jsdc); }