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132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/* Copyright (c) 2016, Pollard Banknote Limited
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** Provide types, macros, and functions for the operating system
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*
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* This file provides a stable way to work with the OS. It provides
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* - namespaces and typedefs that can be used portably between OS's
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* - feature macros for enabling specific operating system capabilities
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*
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* @todo May want to rethink OS_POSIX as feature test macros since posix can
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* sorta be in Windows (ex., Cygwin)
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*/
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#ifndef PBL_CONFIG_OS_H
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#define PBL_CONFIG_OS_H
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// =============================================================================
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// Determine the platform. Ex., Windows or POSIX. Define feature macros
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#if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ ) ) )
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#include <unistd.h>
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#ifdef _POSIX_VERSION
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// ISO POSIX.1 aka IEEE 1003.1
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/// OS_POSIX - unistd.h is included and _POSIX_VERSION is defined
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#define OS_POSIX
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#if _POSIX_VERSION >= 199506L
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// ISO POSIX.1-1996 aka IEEE 1003.1-1996
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#define POSIX_THREADS
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#if ( _POSIX_VERSION >= 200112L )
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// ISO POSIX.1-2001 aka IEEE 1003.1-2001, aka Issue 6, aka SUSv3
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#define POSIX_ISSUE_6
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#if ( _POSIX_VERSION >= 200809L )
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// ISO POSIX.1-2008, aka IEEE 1003.1-2008, aka Issue 7, aka SUSv4
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#define POSIX_ISSUE_7
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#endif // 2008
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#endif // 2001
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#endif // 1996
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#endif // ifdef _POSIX_VERSION
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#endif // if ( defined( __unix__ ) || defined( __unix ) || ( defined( __APPLE__ ) && defined( __MACH__ )))
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#if defined( _WIN64 ) || defined( _WIN32 )
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#include <windows.h> /* MS Windows operating systems */
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#define OS_WINDOWS
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#endif
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// =============================================================================
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// Determine basic types
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#ifdef OS_POSIX
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#include <sys/types.h>
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namespace pbl
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{
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namespace os
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{
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// Identifies a user
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typedef uid_t user_id_type;
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// Identifies a process
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typedef pid_t pid_type;
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}
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}
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#else
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#ifdef OS_WINDOWS
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namespace pbl
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{
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namespace os
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{
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typedef DWORD pid_type;
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}
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}
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#endif // Windows
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#endif // ifdef OS_POSIX
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// =============================================================================
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// Determine multithreading types
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#ifdef POSIX_THREADS
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#include <pthread.h>
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namespace pbl
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{
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namespace os
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{
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typedef pthread_t thread_type;
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typedef pthread_mutex_t mutex_type;
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typedef pthread_rwlock_t shared_mutex_type;
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typedef pthread_cond_t condition_variable_type;
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}
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}
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#else
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#ifdef OS_WINDOWS
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namespace pbl
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{
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namespace os
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{
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typedef HANDLE thread_type;
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typedef CRITICAL_SECTION mutex_type;
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}
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}
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#endif
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#endif // ifdef POSIX_THREADS
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#endif // PBL_CONFIG_OS_H
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