1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/jsd/jsd_obj.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,234 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +/*
1.11 + * JavaScript Debugging support - Object support
1.12 + */
1.13 +
1.14 +#include "jsd.h"
1.15 +
1.16 +/*
1.17 +* #define JSD_TRACE 1
1.18 +*/
1.19 +
1.20 +#ifdef JSD_TRACE
1.21 +#define TRACEOBJ(jsdc, jsdobj, which) _traceObj(jsdc, jsdobj, which)
1.22 +
1.23 +static char *
1.24 +_describeObj(JSDContext* jsdc, JSDObject *jsdobj)
1.25 +{
1.26 + return
1.27 + JS_smprintf("%0x new'd in %s at line %d using ctor %s in %s at line %d",
1.28 + (int)jsdobj,
1.29 + JSD_GetObjectNewURL(jsdc, jsdobj),
1.30 + JSD_GetObjectNewLineNumber(jsdc, jsdobj),
1.31 + JSD_GetObjectConstructorName(jsdc, jsdobj),
1.32 + JSD_GetObjectConstructorURL(jsdc, jsdobj),
1.33 + JSD_GetObjectConstructorLineNumber(jsdc, jsdobj));
1.34 +}
1.35 +
1.36 +static void
1.37 +_traceObj(JSDContext* jsdc, JSDObject* jsdobj, int which)
1.38 +{
1.39 + char* description;
1.40 +
1.41 + if( !jsdobj )
1.42 + return;
1.43 +
1.44 + description = _describeObj(jsdc, jsdobj);
1.45 +
1.46 + printf("%s : %s\n",
1.47 + which == 0 ? "new " :
1.48 + which == 1 ? "final" :
1.49 + "ctor ",
1.50 + description);
1.51 + if(description)
1.52 + free(description);
1.53 +}
1.54 +#else
1.55 +#define TRACEOBJ(jsdc, jsdobj, which) ((void)0)
1.56 +#endif /* JSD_TRACE */
1.57 +
1.58 +#ifdef DEBUG
1.59 +void JSD_ASSERT_VALID_OBJECT(JSDObject* jsdobj)
1.60 +{
1.61 + MOZ_ASSERT(jsdobj);
1.62 + MOZ_ASSERT(!JS_CLIST_IS_EMPTY(&jsdobj->links));
1.63 + MOZ_ASSERT(jsdobj->obj);
1.64 +}
1.65 +#endif
1.66 +
1.67 +
1.68 +static void
1.69 +_destroyJSDObject(JSDContext* jsdc, JSDObject* jsdobj)
1.70 +{
1.71 + MOZ_ASSERT(JSD_OBJECTS_LOCKED(jsdc));
1.72 +
1.73 + JS_REMOVE_LINK(&jsdobj->links);
1.74 + JS_HashTableRemove(jsdc->objectsTable, jsdobj->obj);
1.75 +
1.76 + if(jsdobj->newURL)
1.77 + jsd_DropAtom(jsdc, jsdobj->newURL);
1.78 + if(jsdobj->ctorURL)
1.79 + jsd_DropAtom(jsdc, jsdobj->ctorURL);
1.80 + if(jsdobj->ctorName)
1.81 + jsd_DropAtom(jsdc, jsdobj->ctorName);
1.82 + free(jsdobj);
1.83 +}
1.84 +
1.85 +void
1.86 +jsd_Constructing(JSDContext* jsdc, JSContext *cx, JSObject *obj,
1.87 + JSAbstractFramePtr frame)
1.88 +{
1.89 + JSDObject* jsdobj;
1.90 + JS::RootedScript script(cx);
1.91 + JSDScript* jsdscript;
1.92 + const char* ctorURL;
1.93 + JSString* ctorNameStr;
1.94 + const char* ctorName;
1.95 +
1.96 + JSD_LOCK_OBJECTS(jsdc);
1.97 + jsdobj = jsd_GetJSDObjectForJSObject(jsdc, obj);
1.98 + if( jsdobj && !jsdobj->ctorURL )
1.99 + {
1.100 + script = frame.script();
1.101 + if( script )
1.102 + {
1.103 + ctorURL = JS_GetScriptFilename(script);
1.104 + if( ctorURL )
1.105 + jsdobj->ctorURL = jsd_AddAtom(jsdc, ctorURL);
1.106 +
1.107 + JSD_LOCK_SCRIPTS(jsdc);
1.108 + jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, frame);
1.109 + JSD_UNLOCK_SCRIPTS(jsdc);
1.110 + if( jsdscript && (ctorNameStr = jsd_GetScriptFunctionId(jsdc, jsdscript)) ) {
1.111 + if( (ctorName = JS_EncodeString(cx, ctorNameStr)) ) {
1.112 + jsdobj->ctorName = jsd_AddAtom(jsdc, ctorName);
1.113 + JS_free(cx, (void *) ctorName);
1.114 + }
1.115 + }
1.116 + jsdobj->ctorLineno = JS_GetScriptBaseLineNumber(cx, script);
1.117 + }
1.118 + }
1.119 + TRACEOBJ(jsdc, jsdobj, 3);
1.120 + JSD_UNLOCK_OBJECTS(jsdc);
1.121 +}
1.122 +
1.123 +static JSHashNumber
1.124 +_hash_root(const void *key)
1.125 +{
1.126 + return ((JSHashNumber)(ptrdiff_t) key) >> 2; /* help lame MSVC1.5 on Win16 */
1.127 +}
1.128 +
1.129 +bool
1.130 +jsd_InitObjectManager(JSDContext* jsdc)
1.131 +{
1.132 + JS_INIT_CLIST(&jsdc->objectsList);
1.133 + jsdc->objectsTable = JS_NewHashTable(256, _hash_root,
1.134 + JS_CompareValues, JS_CompareValues,
1.135 + nullptr, nullptr);
1.136 + return !!jsdc->objectsTable;
1.137 +}
1.138 +
1.139 +void
1.140 +jsd_DestroyObjectManager(JSDContext* jsdc)
1.141 +{
1.142 + jsd_DestroyObjects(jsdc);
1.143 + JSD_LOCK_OBJECTS(jsdc);
1.144 + JS_HashTableDestroy(jsdc->objectsTable);
1.145 + JSD_UNLOCK_OBJECTS(jsdc);
1.146 +}
1.147 +
1.148 +void
1.149 +jsd_DestroyObjects(JSDContext* jsdc)
1.150 +{
1.151 + JSD_LOCK_OBJECTS(jsdc);
1.152 + while( !JS_CLIST_IS_EMPTY(&jsdc->objectsList) )
1.153 + _destroyJSDObject(jsdc, (JSDObject*)JS_NEXT_LINK(&jsdc->objectsList));
1.154 + JSD_UNLOCK_OBJECTS(jsdc);
1.155 +}
1.156 +
1.157 +JSDObject*
1.158 +jsd_IterateObjects(JSDContext* jsdc, JSDObject** iterp)
1.159 +{
1.160 + JSDObject *jsdobj = *iterp;
1.161 +
1.162 + MOZ_ASSERT(JSD_OBJECTS_LOCKED(jsdc));
1.163 +
1.164 + if( !jsdobj )
1.165 + jsdobj = (JSDObject *)jsdc->objectsList.next;
1.166 + if( jsdobj == (JSDObject *)&jsdc->objectsList )
1.167 + return nullptr;
1.168 + *iterp = (JSDObject*) jsdobj->links.next;
1.169 + return jsdobj;
1.170 +}
1.171 +
1.172 +JSObject*
1.173 +jsd_GetWrappedObject(JSDContext* jsdc, JSDObject* jsdobj)
1.174 +{
1.175 + return jsdobj->obj;
1.176 +}
1.177 +
1.178 +const char*
1.179 +jsd_GetObjectNewURL(JSDContext* jsdc, JSDObject* jsdobj)
1.180 +{
1.181 + if( jsdobj->newURL )
1.182 + return JSD_ATOM_TO_STRING(jsdobj->newURL);
1.183 + return nullptr;
1.184 +}
1.185 +
1.186 +unsigned
1.187 +jsd_GetObjectNewLineNumber(JSDContext* jsdc, JSDObject* jsdobj)
1.188 +{
1.189 + return jsdobj->newLineno;
1.190 +}
1.191 +
1.192 +const char*
1.193 +jsd_GetObjectConstructorURL(JSDContext* jsdc, JSDObject* jsdobj)
1.194 +{
1.195 + if( jsdobj->ctorURL )
1.196 + return JSD_ATOM_TO_STRING(jsdobj->ctorURL);
1.197 + return nullptr;
1.198 +}
1.199 +
1.200 +unsigned
1.201 +jsd_GetObjectConstructorLineNumber(JSDContext* jsdc, JSDObject* jsdobj)
1.202 +{
1.203 + return jsdobj->ctorLineno;
1.204 +}
1.205 +
1.206 +const char*
1.207 +jsd_GetObjectConstructorName(JSDContext* jsdc, JSDObject* jsdobj)
1.208 +{
1.209 + if( jsdobj->ctorName )
1.210 + return JSD_ATOM_TO_STRING(jsdobj->ctorName);
1.211 + return nullptr;
1.212 +}
1.213 +
1.214 +JSDObject*
1.215 +jsd_GetJSDObjectForJSObject(JSDContext* jsdc, JSObject* jsobj)
1.216 +{
1.217 + JSDObject* jsdobj;
1.218 +
1.219 + JSD_LOCK_OBJECTS(jsdc);
1.220 + jsdobj = (JSDObject*) JS_HashTableLookup(jsdc->objectsTable, jsobj);
1.221 + JSD_UNLOCK_OBJECTS(jsdc);
1.222 + return jsdobj;
1.223 +}
1.224 +
1.225 +JSDObject*
1.226 +jsd_GetObjectForValue(JSDContext* jsdc, JSDValue* jsdval)
1.227 +{
1.228 + return jsd_GetJSDObjectForJSObject(jsdc, JSVAL_TO_OBJECT(jsdval->val));
1.229 +}
1.230 +
1.231 +JSDValue*
1.232 +jsd_GetValueForObject(JSDContext* jsdc, JSDObject* jsdobj)
1.233 +{
1.234 + return jsd_NewValue(jsdc, OBJECT_TO_JSVAL(jsdobj->obj));
1.235 +}
1.236 +
1.237 +
