1                 : /*
       2                 :  * Copyright (c) 2011 The Native Client Authors. All rights reserved.
       3                 :  * Use of this source code is governed by a BSD-style license that can be
       4                 :  * found in the LICENSE file.
       5                 :  */
       6                 : 
       7                 : #define NACL_LOG_MODULE_NAME "weak_ref"
       8                 : 
       9                 : #include "native_client/src/trusted/weak_ref/weak_ref.h"
      10                 : 
      11                 : #include "native_client/src/shared/platform/nacl_check.h"
      12                 : #include "native_client/src/shared/platform/nacl_log.h"
      13                 : #include "native_client/src/shared/platform/nacl_sync.h"
      14                 : #include "native_client/src/shared/platform/nacl_sync_checked.h"
      15                 : #include "native_client/src/shared/platform/nacl_sync_raii.h"
      16                 : 
      17                 : namespace nacl {
      18                 : 
      19               0 : AnchoredResource::AnchoredResource(WeakRefAnchor* anchor)
      20               0 :     : anchor_(anchor->Ref()) {
      21               0 :   NaClXMutexCtor(&mu_);
      22               0 : }
      23                 : 
      24               0 : AnchoredResource::~AnchoredResource() {
      25               0 :   anchor_->Unref();
      26               0 :   NaClMutexDtor(&mu_);
      27               0 :   NaClLog(4, "~AnchoredResource: this 0x%"NACL_PRIxPTR"\n", (uintptr_t) this);
      28               0 : }
      29                 : 
      30               0 : WeakRefAnchor::WeakRefAnchor()
      31               0 :     : abandoned_(false) {
      32               0 :   NaClXMutexCtor(&mu_);
      33               0 : }
      34                 : 
      35               0 : WeakRefAnchor::~WeakRefAnchor() {
      36               0 :   NaClMutexDtor(&mu_);
      37               0 : }  // only via Unref
      38                 : 
      39               0 : bool WeakRefAnchor::is_abandoned() {
      40               0 :   nacl::MutexLocker take(&mu_);
      41               0 :   NaClLog(4, "is_abandoned: %d\n", abandoned_);
      42               0 :   return abandoned_;
      43                 : }
      44                 : 
      45               0 : void WeakRefAnchor::Abandon() {
      46               0 :   NaClLog(4,
      47                 :           "Entered WeakRefAnchor::Abandon: this 0x%"NACL_PRIxPTR"\n",
      48               0 :           (uintptr_t) this);
      49                 :   do {
      50               0 :     nacl::MutexLocker take(&mu_);
      51               0 :     abandoned_ = true;
      52                 :   } while (0);
      53                 : 
      54               0 :   NaClLog(4, "Leaving WeakRefAnchor::Abandon\n");
      55               0 : }
      56                 : 
      57                 : }  // namespace nacl