Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /* vim: set ts=8 sts=4 et sw=4 tw=99: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "xpcprivate.h"
       8             : #include "jsprf.h"
       9             : #include "nsThreadUtils.h"
      10             : #include "nsContentUtils.h"
      11             : 
      12             : #include "mozilla/Sprintf.h"
      13             : 
      14             : #ifdef XP_WIN
      15             : #include <windows.h>
      16             : #endif
      17             : 
      18           0 : static void DebugDump(const char* fmt, ...)
      19             : {
      20             :   char buffer[2048];
      21             :   va_list ap;
      22           0 :   va_start(ap, fmt);
      23             : #ifdef XPWIN
      24             :   _vsnprintf(buffer, sizeof(buffer), fmt, ap);
      25             :   buffer[sizeof(buffer)-1] = '\0';
      26             : #else
      27           0 :   VsprintfLiteral(buffer, fmt, ap);
      28             : #endif
      29           0 :   va_end(ap);
      30             : #ifdef XP_WIN
      31             :   if (IsDebuggerPresent()) {
      32             :     OutputDebugStringA(buffer);
      33             :   }
      34             : #endif
      35           0 :   printf("%s", buffer);
      36           0 : }
      37             : 
      38             : bool
      39           0 : xpc_DumpJSStack(bool showArgs, bool showLocals, bool showThisProps)
      40             : {
      41           0 :     JSContext* cx = nsContentUtils::GetCurrentJSContextForThread();
      42           0 :     if (!cx) {
      43           0 :         printf("there is no JSContext on the stack!\n");
      44           0 :     } else if (JS::UniqueChars buf = xpc_PrintJSStack(cx, showArgs, showLocals, showThisProps)) {
      45           0 :         DebugDump("%s\n", buf.get());
      46             :     }
      47           0 :     return true;
      48             : }
      49             : 
      50             : JS::UniqueChars
      51           0 : xpc_PrintJSStack(JSContext* cx, bool showArgs, bool showLocals,
      52             :                  bool showThisProps)
      53             : {
      54           0 :     JS::AutoSaveExceptionState state(cx);
      55             : 
      56           0 :     JS::UniqueChars buf = JS::FormatStackDump(cx, nullptr, showArgs, showLocals, showThisProps);
      57           0 :     if (!buf)
      58           0 :         DebugDump("%s", "Failed to format JavaScript stack for dump\n");
      59             : 
      60           0 :     state.restore();
      61           0 :     return buf;
      62             : }