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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#include "xpcprivate.h"
#include "js/friend/DumpFunctions.h" // JS::FormatStackDump
#include "nsThreadUtils.h"
#include "nsContentUtils.h"
#include "mozilla/Sprintf.h"
#ifdef XP_WIN
# include <windows.h>
# include "nsPrintfCString.h"
#ifdef ANDROID
# include <android/log.h>
static void DebugDump(const char* str) {
#ifdef XP_WIN
if (IsDebuggerPresent()) {
nsPrintfCString output("%s\n", str);
#elif defined(ANDROID)
__android_log_print(ANDROID_LOG_DEBUG, "Gecko", "%s\n", str);
printf("%s\n", str);
bool xpc_DumpJSStack(bool showArgs, bool showLocals, bool showThisProps) {
JSContext* cx = nsContentUtils::GetCurrentJSContext();
if (!cx) {
printf("there is no JSContext on the stack!\n");
} else if (JS::UniqueChars buf =
xpc_PrintJSStack(cx, showArgs, showLocals, showThisProps)) {
return true;
JS::UniqueChars xpc_PrintJSStack(JSContext* cx, bool showArgs, bool showLocals,
bool showThisProps) {
JS::AutoSaveExceptionState state(cx);
JS::UniqueChars buf =
JS::FormatStackDump(cx, showArgs, showLocals, showThisProps);
if (!buf) {
DebugDump("Failed to format JavaScript stack for dump");
return buf;