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epoc32/include/stdapis/boost/detail/lwm_win32_cs.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:33:34 +0100
branchSymbian3
changeset 4 837f303aceeb
permissions -rw-r--r--
Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed. 
     1 #ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED

     2 #define BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED

     3 

     4 // MS compatible compilers support #pragma once

     5 

     6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)

     7 # pragma once

     8 #endif

     9 

    10 //

    11 //  boost/detail/lwm_win32_cs.hpp

    12 //

    13 //  Copyright (c) 2002, 2003 Peter Dimov

    14 //

    15 // Distributed under the Boost Software License, Version 1.0. (See

    16 // accompanying file LICENSE_1_0.txt or copy at

    17 // http://www.boost.org/LICENSE_1_0.txt)

    18 //

    19 

    20 #ifdef BOOST_USE_WINDOWS_H

    21 #  include <windows.h>

    22 #endif

    23 

    24 namespace boost

    25 {

    26 

    27 namespace detail

    28 {

    29 

    30 #ifndef BOOST_USE_WINDOWS_H

    31 

    32 struct CRITICAL_SECTION

    33 {

    34     struct critical_section_debug * DebugInfo;

    35     long LockCount;

    36     long RecursionCount;

    37     void * OwningThread;

    38     void * LockSemaphore;

    39 #if defined(_WIN64)

    40     unsigned __int64 SpinCount;

    41 #else

    42     unsigned long SpinCount;

    43 #endif

    44 };

    45 

    46 extern "C" __declspec(dllimport) void __stdcall InitializeCriticalSection(CRITICAL_SECTION *);

    47 extern "C" __declspec(dllimport) void __stdcall EnterCriticalSection(CRITICAL_SECTION *);

    48 extern "C" __declspec(dllimport) void __stdcall LeaveCriticalSection(CRITICAL_SECTION *);

    49 extern "C" __declspec(dllimport) void __stdcall DeleteCriticalSection(CRITICAL_SECTION *);

    50 

    51 #endif // #ifndef BOOST_USE_WINDOWS_H

    52 

    53 class lightweight_mutex

    54 {

    55 private:

    56 

    57     CRITICAL_SECTION cs_;

    58 

    59     lightweight_mutex(lightweight_mutex const &);

    60     lightweight_mutex & operator=(lightweight_mutex const &);

    61 

    62 public:

    63 

    64     lightweight_mutex()

    65     {

    66         InitializeCriticalSection(&cs_);

    67     }

    68 

    69     ~lightweight_mutex()

    70     {

    71         DeleteCriticalSection(&cs_);

    72     }

    73 

    74     class scoped_lock;

    75     friend class scoped_lock;

    76 

    77     class scoped_lock

    78     {

    79     private:

    80 

    81         lightweight_mutex & m_;

    82 

    83         scoped_lock(scoped_lock const &);

    84         scoped_lock & operator=(scoped_lock const &);

    85 

    86     public:

    87 

    88         explicit scoped_lock(lightweight_mutex & m): m_(m)

    89         {

    90             EnterCriticalSection(&m_.cs_);

    91         }

    92 

    93         ~scoped_lock()

    94         {

    95             LeaveCriticalSection(&m_.cs_);

    96         }

    97     };

    98 };

    99 

   100 } // namespace detail

   101 

   102 } // namespace boost

   103 

   104 #endif // #ifndef BOOST_DETAIL_LWM_WIN32_CS_HPP_INCLUDED
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