C++ (Cpp) JSNullFramePtr Examples

Example #1

File: jsd_hook.cpp Project: SlateScience/Spidermonkey

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, JSNullFramePtr());
    JSD_UNLOCK_SCRIPTS(jsdc);
    if( ! jsdscript )
        return JSTRAP_CONTINUE;

    JS_GetPendingException(cx, rval);

    return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_THROW,
                                 hook, hookData, rval);
}

Example #2

File: XPCDebug.cpp Project: multi-sim/releases-mozilla-central

JSBool
xpc_DumpEvalInJSStackFrame(JSContext* cx, uint32_t frameno, const char* text)
{
    if (!cx || !text) {
        DebugDump("%s", "invalid params passed to xpc_DumpEvalInJSStackFrame!\n");
        return false;
    }

    DebugDump("js[%d]> %s\n", frameno, text);

    uint32_t num = 0;

    JSAbstractFramePtr frame = JSNullFramePtr();

    JSBrokenFrameIterator iter(cx);
    while (!iter.done()) {
        if (num == frameno) {
            frame = iter.abstractFramePtr();
            break;
        }
        ++iter;
        num++;
    }

    if (!frame) {
        DebugDump("%s", "invalid frame number!\n");
        return false;
    }

    JSAutoRequest ar(cx);

    JSExceptionState* exceptionState = JS_SaveExceptionState(cx);
    JSErrorReporter older = JS_SetErrorReporter(cx, xpcDumpEvalErrorReporter);

    jsval rval;
    JSString* str;
    JSAutoByteString bytes;
    if (frame.evaluateInStackFrame(cx, text, strlen(text), "eval", 1, &rval) &&
        nullptr != (str = JS_ValueToString(cx, rval)) &&
        bytes.encode(cx, str)) {
        DebugDump("%s\n", bytes.ptr());
    } else
        DebugDump("%s", "eval failed!\n");
    JS_SetErrorReporter(cx, older);
    JS_RestoreExceptionState(cx, exceptionState);
    return true;
}

Example #3

File: jsd_hook.cpp Project: JSilver99/mozilla-central

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, JSNullFramePtr());
    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);
}