xpcom/string/nsStringStats.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsStringStats.h"
   8
   9 #include "mozilla/IntegerPrintfMacros.h"
  10 #include "mozilla/MemoryReporting.h"
  11 #include "nsString.h"
  12
  13 #include <stdint.h>
  14 #include <stdio.h>
  15
  16 #ifdef XP_WIN
  17 #  include <windows.h>
  18 #  include <process.h>
  19 #else
  20 #  include <unistd.h>
  21 #  include <pthread.h>
  22 #endif
  23
  24 nsStringStats gStringStats;
  25
  26 nsStringStats::~nsStringStats() {
  27   // this is a hack to suppress duplicate string stats printing
  28   // in seamonkey as a result of the string code being linked
  29   // into seamonkey and libxpcom! :-(
  30   if (!mAllocCount && !mAdoptCount) {
  31     return;
  32   }
  33
  34   // Only print the stats if we detect a leak.
  35   if (mAllocCount <= mFreeCount && mAdoptCount <= mAdoptFreeCount) {
  36     return;
  37   }
  38
  39   printf("nsStringStats\n");
  40   printf(" => mAllocCount:     % 10d\n", int(mAllocCount));
  41   printf(" => mReallocCount:   % 10d\n", int(mReallocCount));
  42   printf(" => mFreeCount:      % 10d", int(mFreeCount));
  43   if (mAllocCount > mFreeCount) {
  44     printf("  --  LEAKED %d !!!\n", mAllocCount - mFreeCount);
  45   } else {
  46     printf("\n");
  47   }
  48   printf(" => mShareCount:     % 10d\n", int(mShareCount));
  49   printf(" => mAdoptCount:     % 10d\n", int(mAdoptCount));
  50   printf(" => mAdoptFreeCount: % 10d", int(mAdoptFreeCount));
  51   if (mAdoptCount > mAdoptFreeCount) {
  52     printf("  --  LEAKED %d !!!\n", mAdoptCount - mAdoptFreeCount);
  53   } else {
  54     printf("\n");
  55   }
  56
  57 #ifdef XP_WIN
  58   auto pid = uintptr_t(_getpid());
  59   auto tid = uintptr_t(GetCurrentThreadId());
  60 #else
  61   auto pid = uintptr_t(getpid());
  62   auto tid = uintptr_t(pthread_self());
  63 #endif
  64
  65   printf(" => Process ID: %" PRIuPTR ", Thread ID: %" PRIuPTR "\n", pid, tid);
  66 }