PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize)
{
Vector<ScriptCallFrame> frames;
CallFrame* frame = exec->vm().topCallFrame;
CreateScriptCallStackFunctor functor(true, frames, maxStackSize);
frame->iterate(functor);
if (frames.isEmpty()) {
CreateScriptCallStackFunctor functor(false, frames, maxStackSize);
frame->iterate(functor);
}
return ScriptCallStack::create(frames);
}
Ref<ScriptCallStack> createScriptCallStackForConsole(JSC::ExecState* exec, size_t maxStackSize)
{
if (!exec)
return ScriptCallStack::create();
JSLockHolder locker(exec);
Vector<ScriptCallFrame> frames;
CallFrame* frame = exec->vm().topCallFrame;
if (!frame)
return ScriptCallStack::create();
CreateScriptCallStackFunctor functor(true, frames, maxStackSize);
frame->iterate(functor);
if (frames.isEmpty()) {
CreateScriptCallStackFunctor functor(false, frames, maxStackSize);
frame->iterate(functor);
}
return ScriptCallStack::create(frames);
}
JSStringRef JSContextCreateBacktrace(JSContextRef ctx, unsigned maxStackSize)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder lock(exec);
StringBuilder builder;
CallFrame* frame = exec->vm().topCallFrame;
ASSERT(maxStackSize);
BacktraceFunctor functor(builder, maxStackSize);
frame->iterate(functor);
return OpaqueJSString::create(builder.toString()).leakRef();
}
PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize, bool emptyIsAllowed)
{
Vector<ScriptCallFrame> frames;
if (exec) {
CallFrame* frame = exec->vm().topCallFrame;
CreateScriptCallStackFunctor functor(false, frames, maxStackSize);
frame->iterate(functor);
}
if (frames.isEmpty() && !emptyIsAllowed) {
// No frames found. It may happen in the case where
// a bound function is called from native code for example.
// Fallback to setting lineNumber to 0, and source and function name to "undefined".
frames.append(ScriptCallFrame(ASCIILiteral("undefined"), ASCIILiteral("undefined"), 0, 0));
}
return ScriptCallStack::create(frames);
}
