The Tor Browser: ipc/chromium/src/base/ref

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "base/ref_counted.h"

     7 #include "base/logging.h"

     8 #include "base/thread_collision_warner.h"

    10 namespace base {

    12 namespace subtle {

    14 RefCountedBase::RefCountedBase() : ref_count_(0) {

    15 #ifndef NDEBUG

    16   in_dtor_ = false;

    17 #endif

    18 }

    20 RefCountedBase::~RefCountedBase() {

    21 #ifndef NDEBUG

    22   DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";

    23 #endif

    24 }

    26 void RefCountedBase::AddRef() {

    27   // TODO(maruel): Add back once it doesn't assert 500 times/sec.

    28   // Current thread books the critical section "AddRelease" without release it.

    29   // DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);

    30 #ifndef NDEBUG

    31   DCHECK(!in_dtor_);

    32 #endif

    33   ++ref_count_;

    34 }

    36 bool RefCountedBase::Release() {

    37   // TODO(maruel): Add back once it doesn't assert 500 times/sec.

    38   // Current thread books the critical section "AddRelease" without release it.

    39   // DFAKE_SCOPED_LOCK_THREAD_LOCKED(add_release_);

    40 #ifndef NDEBUG

    41   DCHECK(!in_dtor_);

    42 #endif

    43   if (--ref_count_ == 0) {

    44 #ifndef NDEBUG

    45     in_dtor_ = true;

    46 #endif

    47     return true;

    48   }

    49   return false;

    50 }

    52 RefCountedThreadSafeBase::RefCountedThreadSafeBase() : ref_count_(0) {

    53 #ifndef NDEBUG

    54   in_dtor_ = false;

    55 #endif

    56 }

    58 RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {

    59 #ifndef NDEBUG

    60   DCHECK(in_dtor_) << "RefCountedThreadSafe object deleted without "

    61                       "calling Release()";

    62 #endif

    63 }

    65 void RefCountedThreadSafeBase::AddRef() {

    66 #ifndef NDEBUG

    67   DCHECK(!in_dtor_);

    68 #endif

    69   AtomicRefCountInc(&ref_count_);

    70 }

    72 bool RefCountedThreadSafeBase::Release() {

    73 #ifndef NDEBUG

    74   DCHECK(!in_dtor_);

    75   DCHECK(!AtomicRefCountIsZero(&ref_count_));

    76 #endif

    77   if (!AtomicRefCountDec(&ref_count_)) {

    78 #ifndef NDEBUG

    79     in_dtor_ = true;

    80 #endif

    81     return true;

    82   }

    83   return false;

    84 }

    86 }  // namespace subtle

    88 }  // namespace base

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