DCMTree_ThreadSupport.h

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/*************************************************************************************
**
** Copyright 2007, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef DCM_TREE_THREAD_SUPPORT_H
#define DCM_TREE_THREAD_SUPPORT_H
 
#ifdef WIN32
    #ifndef NOMINMAX
        #define NOMINMAX
    #endif
    #include <process.h>
    #include <windows.h>
    #include <winbase.h>
    #undef small
#else
    #include <csignal>
    #include <pthread.h>
#endif
 
#include "DCMTree_Defines.h"
 
 
namespace DCMTree_Utils
{
    typedef void* thread_parameter;
 
    #ifdef WIN32
        #define thread_modifier  __stdcall
        typedef unsigned int     thread_result;
        typedef HANDLE           thread_id;
        typedef thread_result    (thread_modifier *thread_function)(thread_parameter);
        typedef CRITICAL_SECTION thread_criticalsection;
    #else
        #define thread_modifier
        typedef void*            thread_result;
        typedef pthread_t        thread_id;
        typedef thread_result    (*thread_function)(thread_parameter);
        typedef pthread_mutex_t  thread_criticalsection;        
    #endif
 
 
    // system independent multi threading functions
 
 
    thread_id DCMTREE_EXPORT thread_start (thread_function func,thread_parameter param);
 
 
    void DCMTREE_EXPORT thread_await (thread_id id);
 
 
    bool DCMTREE_EXPORT thread_running (thread_id id);
 
 
    void DCMTREE_EXPORT thread_initcriticalsection (thread_criticalsection &cs);
 
 
    void DCMTREE_EXPORT thread_entercriticalsection (thread_criticalsection &cs);
 
 
    void DCMTREE_EXPORT thread_leavecriticalsection (thread_criticalsection &cs);
 
 
    void DCMTREE_EXPORT thread_destroycriticalsection (thread_criticalsection &cs);
 
    class DCMTREE_EXPORT thread_scoped_criticalsection
    {
    public:
        thread_scoped_criticalsection (thread_criticalsection &cs):_cs(cs)
        {
            thread_entercriticalsection (_cs);
        };
 
        ~thread_scoped_criticalsection()
        {
            thread_leavecriticalsection (_cs);
        };
 
    private:
        thread_criticalsection &_cs;
 
        thread_scoped_criticalsection& operator=(const thread_scoped_criticalsection&);
    };
}
 
#endif