stc/exp/ml_stc_linux_make_v1.0/include/boost/smart_ptr/detail/lwm_pthreads.hpp

   1 #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED\r
   2 #define BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED\r
   3 \r
   4 // MS compatible compilers support #pragma once\r
   5 \r
   6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)\r
   7 # pragma once\r
   8 #endif\r
   9 \r
  10 //\r
  11 //  boost/detail/lwm_pthreads.hpp\r
  12 //\r
  13 //  Copyright (c) 2002 Peter Dimov and Multi Media Ltd.\r
  14 //\r
  15 // Distributed under the Boost Software License, Version 1.0. (See\r
  16 // accompanying file LICENSE_1_0.txt or copy at\r
  17 // http://www.boost.org/LICENSE_1_0.txt)\r
  18 //\r
  19 \r
  20 #include <boost/assert.hpp>\r
  21 #include <pthread.h>\r
  22 \r
  23 namespace boost\r
  24 {\r
  25 \r
  26 namespace detail\r
  27 {\r
  28 \r
  29 class lightweight_mutex\r
  30 {\r
  31 private:\r
  32 \r
  33     pthread_mutex_t m_;\r
  34 \r
  35     lightweight_mutex(lightweight_mutex const &);\r
  36     lightweight_mutex & operator=(lightweight_mutex const &);\r
  37 \r
  38 public:\r
  39 \r
  40     lightweight_mutex()\r
  41     {\r
  42 \r
  43 // HPUX 10.20 / DCE has a nonstandard pthread_mutex_init\r
  44 \r
  45 #if defined(__hpux) && defined(_DECTHREADS_)\r
  46         BOOST_VERIFY( pthread_mutex_init( &m_, pthread_mutexattr_default ) == 0 );\r
  47 #else\r
  48         BOOST_VERIFY( pthread_mutex_init( &m_, 0 ) == 0 );\r
  49 #endif\r
  50     }\r
  51 \r
  52     ~lightweight_mutex()\r
  53     {\r
  54         BOOST_VERIFY( pthread_mutex_destroy( &m_ ) == 0 );\r
  55     }\r
  56 \r
  57     class scoped_lock;\r
  58     friend class scoped_lock;\r
  59 \r
  60     class scoped_lock\r
  61     {\r
  62     private:\r
  63 \r
  64         pthread_mutex_t & m_;\r
  65 \r
  66         scoped_lock(scoped_lock const &);\r
  67         scoped_lock & operator=(scoped_lock const &);\r
  68 \r
  69     public:\r
  70 \r
  71         scoped_lock(lightweight_mutex & m): m_(m.m_)\r
  72         {\r
  73             BOOST_VERIFY( pthread_mutex_lock( &m_ ) == 0 );\r
  74         }\r
  75 \r
  76         ~scoped_lock()\r
  77         {\r
  78             BOOST_VERIFY( pthread_mutex_unlock( &m_ ) == 0 );\r
  79         }\r
  80     };\r
  81 };\r
  82 \r
  83 } // namespace detail\r
  84 \r
  85 } // namespace boost\r
  86 \r
  87 #endif // #ifndef BOOST_SMART_PTR_DETAIL_LWM_PTHREADS_HPP_INCLUDED\r