https://git.reactos.org/?p=reactos.git;a=commitdiff;h=4a3a78857f14ec4125f0591ce67d268aa41bab9d
commit 4a3a78857f14ec4125f0591ce67d268aa41bab9d
Author: Katayama Hirofumi MZ <katayama.hirofumi...@gmail.com>
AuthorDate: Sun Dec 24 11:50:11 2023 +0900
Commit: Katayama Hirofumi MZ <katayama.hirofumi...@gmail.com>
CommitDate: Sun Dec 24 11:50:11 2023 +0900
[SDK] Add <cicero/cicfmap.h> for File Mapping
CORE-19361
---
sdk/include/reactos/cicero/cicfmap.h | 165 +++++++++++++++++++++++++++++++++++
1 file changed, 165 insertions(+)
diff --git a/sdk/include/reactos/cicero/cicfmap.h
b/sdk/include/reactos/cicero/cicfmap.h
new file mode 100644
index 00000000000..201f3227db8
--- /dev/null
+++ b/sdk/include/reactos/cicero/cicfmap.h
@@ -0,0 +1,165 @@
+/*
+ * PROJECT: ReactOS Cicero
+ * LICENSE: LGPL-2.1-or-later (https://spdx.org/licenses/LGPL-2.1-or-later)
+ * PURPOSE: Cicero file mapping
+ * COPYRIGHT: Copyright 2023 Katayama Hirofumi MZ
<katayama.hirofumi...@gmail.com>
+ */
+
+#pragma once
+
+#include "cicmutex.h"
+
+// class CicFileMappingStatic;
+// class CicFileMapping;
+
+class CicFileMappingStatic
+{
+protected:
+ LPCWSTR m_pszName;
+ LPVOID m_pView;
+ HANDLE m_hMapping;
+ BOOL m_bCreated;
+ BOOL m_bHasMutex;
+ CicMutex *m_pMutex;
+
+ LPVOID _Map();
+
+public:
+ CicFileMappingStatic() { }
+ ~CicFileMappingStatic() { }
+
+ void Init(LPCWSTR pszName, CicMutex *pMutex);
+
+ LPVOID Create(LPSECURITY_ATTRIBUTES pSA, DWORD dwMaximumSizeLow, LPBOOL
pbAlreadyExists);
+ LPVOID Open();
+ void Close();
+
+ BOOL Enter();
+ void Leave();
+ BOOL Flush(SIZE_T dwNumberOfBytesToFlush);
+ void Finalize();
+};
+
+class CicFileMapping : public CCicFileMappingStatic
+{
+public:
+ CicFileMapping(LPCWSTR pszName, CicMutex *pMutex);
+ virtual ~CicFileMapping() { Finalize(); }
+};
+
+/******************************************************************************/
+
+inline
+CicFileMapping::CicFileMapping(LPCWSTR pszName, CicMutex *pMutex)
+ : m_pszName(NULL)
+ , m_pView(NULL)
+ , m_hMapping(NULL)
+ , m_bCreated(FALSE)
+ , m_bHasMutex(FALSE)
+ , m_pMutex(NULL)
+{
+ Init(pszName, pMutex);
+}
+
+inline void CicFileMappingStatic::Close()
+{
+ if (m_pView)
+ {
+ ::UnmapViewOfFile(m_pView);
+ m_pView = NULL;
+ }
+
+ if (m_hMapping)
+ {
+ ::CloseHandle(m_hMapping);
+ m_hMapping = NULL;
+ }
+
+ m_bCreated = FALSE;
+}
+
+inline void CicFileMappingStatic::Init(LPCWSTR pszName, CicMutex *pMutex)
+{
+ if (pMutex)
+ m_pMutex = pMutex;
+
+ m_bCreated = FALSE;
+ m_pszName = pszName;
+ m_bHasMutex = (pMutex != NULL);
+}
+
+inline LPVOID
+CicFileMappingStatic::Create(
+ LPSECURITY_ATTRIBUTES pSA,
+ DWORD dwMaximumSizeLow,
+ LPBOOL pbAlreadyExists)
+{
+ if (!m_pszName)
+ return NULL;
+
+ m_hMapping = ::CreateFileMappingW(INVALID_HANDLE_VALUE,
+ pSA,
+ PAGE_READWRITE,
+ 0,
+ dwMaximumSizeLow,
+ m_pszName);
+ if (pbAlreadyExists)
+ *pbAlreadyExists = (::GetLastError() == ERROR_ALREADY_EXISTS);
+ if (!m_hMapping)
+ return NULL;
+
+ m_bCreated = TRUE;
+ return _Map();
+}
+
+inline LPVOID CicFileMappingStatic::Open()
+{
+ if (!m_pszName)
+ return NULL;
+ m_hMapping = ::OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, m_pszName);
+ if (!m_hMapping)
+ return NULL;
+
+ return _Map();
+}
+
+inline LPVOID CicFileMappingStatic::_Map()
+{
+ m_pView = ::MapViewOfFile(m_hMapping, FILE_MAP_WRITE, 0, 0, 0);
+ if (!m_pView)
+ {
+ Close();
+ return NULL;
+ }
+ return m_pView;
+}
+
+inline BOOL CicFileMappingStatic::Enter()
+{
+ if (!m_bHasMutex)
+ return TRUE;
+ return m_pMutex->Enter();
+}
+
+inline void CicFileMappingStatic::Leave()
+{
+ if (!m_bHasMutex)
+ return;
+ m_pMutex->Leave();
+}
+
+inline BOOL CCicFileMappingStatic::Flush(SIZE_T dwNumberOfBytesToFlush)
+{
+ if (!m_pView)
+ return FALSE;
+ return ::FlushViewOfFile(m_pView, dwNumberOfBytesToFlush);
+}
+
+inline void CicFileMappingStatic::Finalize()
+{
+ if (!m_bHasMutex)
+ return;
+
+ Close();
+ Leave();
+}
