WinSMTool.cpp

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#include "WinSMTool.h"
#include "WinTools.h"
 
 
using namespace jbxwl;
 
 
CWinSharedMem::CWinSharedMem(void)
{
    CWinSharedMem(JBXWL_DEFAULT_SMNAME, JBXWL_DEFAULT_SMSZIE);
}
 
 
CWinSharedMem::CWinSharedMem(const char* name, int size)
{
    buf = new_Buffer(JBXWL_DEFAULT_SMSZIE + 1);
 
    TCHAR sznm[] = _T("_SZ");
 
    m_hMapping = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mbs2ts((char*)name));
    if (m_hMapping == NULL) {
        // メモリマップドファイルの生成
        m_hMapping = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, size, mbs2ts((char*)name));
    }
    if (m_hMapping != NULL) {
        // プロセス内のアドレス空間にファイルのビューをマップ
        m_pMappingView = ::MapViewOfFile(m_hMapping, FILE_MAP_ALL_ACCESS, 0, 0, size);
        // ミューテックスオブジェクトの生成
        m_pMutex = new CMutex((BOOL)FALSE, (LPCTSTR)(mbs2ts((char*)name) + mbs2ts("_mutex")));
    }
 
    // サイズ用 4byte
    m_hMapping_sz = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mbs2ts((char*)name) + sznm);
    if (m_hMapping_sz == NULL) {
        m_hMapping_sz = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, size, mbs2ts((char*)name) + sznm);
    }
    if (m_hMapping_sz != NULL) {
        m_pMappingView_sz = ::MapViewOfFile(m_hMapping_sz, FILE_MAP_ALL_ACCESS, 0, 0, 4);
    }
}
 
 
CWinSharedMem::~CWinSharedMem(void)
{
    if (m_pMappingView != NULL) ::UnmapViewOfFile(m_pMappingView);
    if (m_hMapping != NULL) ::CloseHandle(m_hMapping);
    if (m_pMappingView_sz != NULL) ::UnmapViewOfFile(m_pMappingView_sz);
    if (m_hMapping_sz != NULL) ::CloseHandle(m_hMapping_sz);
    if (m_pMutex!=NULL) delete m_pMutex;
 
    m_pMappingView = NULL;
    m_hMapping = NULL;
    m_pMappingView_sz = NULL;
    m_hMapping_sz = NULL;
    m_pMutex = NULL;
 
    del_Buffer(&buf);
}
 
 
// 共有メモリの内容を取得
int  CWinSharedMem::get()
{
    int sz, cc;
 
    m_pMutex->Lock(INFINITE);
    {
        memcpy(&sz, m_pMappingView_sz, 4);
        if (sz > 0) {
            copy_b2Buffer(m_pMappingView, buf, sz);
            cc = 0;
            memcpy(m_pMappingView_sz, &cc, 4);
        }
    }
    m_pMutex->Unlock();
 
    return sz;
}
 
 
// 共有メモリへ書き込む
void  CWinSharedMem::put()
{
    int seeksz = 0;
 
    m_pMutex->Lock(INFINITE);
    {
        memcpy(&seeksz, m_pMappingView_sz, 4);
        memcpy(((unsigned char*)m_pMappingView + seeksz), buf->buf, buf->vldsz);
        seeksz += buf->vldsz;
        memcpy(m_pMappingView_sz, &seeksz, 4);
    }
    m_pMutex->Unlock();
 
    return;
}
 
 
 
 
CWinSharedMem* jbxwl::_Debug_SHM = NULL;
 
 
void  jbxwl::open_shm_debuger(void)
{
    jbxwl::_Debug_SHM = new CWinSharedMem("jbxwl_SHM_DEBUGGER");
}
 
 
void  jbxwl::close_shm_debuger(void)
{
    if (jbxwl::_Debug_SHM != NULL) delete(jbxwl::_Debug_SHM);
    jbxwl::_Debug_SHM = NULL;
}