base/crypto/mac_security_services_lock.cc

   1 // Copyright (c) 2011 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.
   4
   5 #include "base/crypto/mac_security_services_lock.h"
   6
   7 #include "base/memory/singleton.h"
   8 #include "base/synchronization/lock.h"
   9
  10 namespace {
  11
  12 // This singleton pertains to Apple's wrappers over their own CSSM handles,
  13 // as opposed to our own CSSM_CSP_HANDLE in cssm_init.cc.
  14 class SecurityServicesSingleton {
  15  public:
  16   static SecurityServicesSingleton* GetInstance() {
  17     return Singleton<SecurityServicesSingleton,
  18                      LeakySingletonTraits<SecurityServicesSingleton> >::get();
  19   }
  20
  21   base::Lock& lock() { return lock_; }
  22
  23  private:
  24   friend struct DefaultSingletonTraits<SecurityServicesSingleton>;
  25
  26   SecurityServicesSingleton() {}
  27   ~SecurityServicesSingleton() {}
  28
  29   base::Lock lock_;
  30
  31   DISALLOW_COPY_AND_ASSIGN(SecurityServicesSingleton);
  32 };
  33
  34 }  // namespace
  35
  36 namespace base {
  37
  38 base::Lock& GetMacSecurityServicesLock() {
  39   return SecurityServicesSingleton::GetInstance()->lock();
  40 }
  41
  42 }  // namespace base