#include <WinSMTool.h>

Public Member Functions
	CWinSharedMem (void)

	CWinSharedMem (const char *name, int size=JBXWL_DEFAULT_SMSZIE)

virtual	~CWinSharedMem (void)

int	get ()

void	put ()

Public Attributes
Buffer *	buf

Protected Attributes
HANDLE	m_hMapping = NULL

HANDLE	m_hMapping_sz = NULL

void *	m_pMappingView = NULL

void *	m_pMappingView_sz = NULL

CMutex *	m_pMutex = NULL

Detailed Description

Definition at line 19 of file WinSMTool.h.

Constructor & Destructor Documentation

◆ CWinSharedMem() [1/2]

CWinSharedMem ( void )

Definition at line 9 of file WinSMTool.cpp.

{
    CWinSharedMem(JBXWL_DEFAULT_SMNAME, JBXWL_DEFAULT_SMSZIE);
}

References CWinSharedMem::CWinSharedMem(), JBXWL_DEFAULT_SMNAME, and JBXWL_DEFAULT_SMSZIE.

Referenced by CWinSharedMem::CWinSharedMem().

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◆ CWinSharedMem() [2/2]

CWinSharedMem	(	const char *	name,
		int	size = JBXWL_DEFAULT_SMSZIE )

Definition at line 15 of file WinSMTool.cpp.

{
    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);
    }
}

References CWinSharedMem::buf, JBXWL_DEFAULT_SMSZIE, CWinSharedMem::m_hMapping, CWinSharedMem::m_hMapping_sz, CWinSharedMem::m_pMappingView, CWinSharedMem::m_pMappingView_sz, CWinSharedMem::m_pMutex, and jbxwl::mbs2ts().

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◆ ~CWinSharedMem()

~CWinSharedMem ( void )

virtual

Definition at line 44 of file WinSMTool.cpp.

{
    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);
}

References CWinSharedMem::buf, CWinSharedMem::m_hMapping, CWinSharedMem::m_hMapping_sz, CWinSharedMem::m_pMappingView, CWinSharedMem::m_pMappingView_sz, and CWinSharedMem::m_pMutex.

Member Function Documentation

◆ get()

int get ( )

Definition at line 63 of file WinSMTool.cpp.

{
    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;
}

References CWinSharedMem::buf, CWinSharedMem::m_pMappingView, CWinSharedMem::m_pMappingView_sz, and CWinSharedMem::m_pMutex.

◆ put()

void put ( )

Definition at line 83 of file WinSMTool.cpp.

{
    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;
}