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 "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 base::Singleton<
  18         SecurityServicesSingleton,
  19         base::LeakySingletonTraits<SecurityServicesSingleton>>::get();
  20   }
  21
  22   base::Lock& lock() { return lock_; }
  23
  24  private:
  25   friend struct base::DefaultSingletonTraits<SecurityServicesSingleton>;
  26
  27   SecurityServicesSingleton() {}
  28   ~SecurityServicesSingleton() {}
  29
  30   base::Lock lock_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(SecurityServicesSingleton);
  33 };
  34
  35 }  // namespace
  36
  37 namespace crypto {
  38
  39 base::Lock& GetMacSecurityServicesLock() {
  40   return SecurityServicesSingleton::GetInstance()->lock();
  41 }
  42
  43 }  // namespace crypto