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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-03-29 16:04:01 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-03-29 16:04:01 +0100
commit88083f8c683c18f4de68a20c863a82a9da65db8f (patch)
tree926656892d9d80260da02ea8ea71031b140c51df /other-licenses/7zstub/src/CPP/Windows/FileMapping.h
parentf999f544aad04069b03704d994a99352263f600b (diff)
parent843e4ceffd6ce21a6e6db37419335eafdc543e18 (diff)
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Merge branch 'master' into Sync-weave
Diffstat (limited to 'other-licenses/7zstub/src/CPP/Windows/FileMapping.h')
-rw-r--r--other-licenses/7zstub/src/CPP/Windows/FileMapping.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Windows/FileMapping.h b/other-licenses/7zstub/src/CPP/Windows/FileMapping.h
new file mode 100644
index 000000000..27d076b83
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/Windows/FileMapping.h
@@ -0,0 +1,66 @@
+// Windows/FileMapping.h
+
+#ifndef __WINDOWS_FILEMAPPING_H
+#define __WINDOWS_FILEMAPPING_H
+
+#include "../Common/MyTypes.h"
+
+#include "Handle.h"
+
+namespace NWindows {
+
+class CFileMapping: public CHandle
+{
+public:
+ WRes Create(DWORD protect, UInt64 maxSize, LPCTSTR name)
+ {
+ _handle = ::CreateFileMapping(INVALID_HANDLE_VALUE, NULL, protect, (DWORD)(maxSize >> 32), (DWORD)maxSize, name);
+ return ::GetLastError();
+ }
+
+ WRes Open(DWORD
+ #ifndef UNDER_CE
+ desiredAccess
+ #endif
+ , LPCTSTR name)
+ {
+ #ifdef UNDER_CE
+ WRes res = Create(PAGE_READONLY, 0, name);
+ if (res == ERROR_ALREADY_EXISTS)
+ return 0;
+ Close();
+ if (res == 0)
+ res = ERROR_FILE_NOT_FOUND;
+ return res;
+ #else
+ _handle = ::OpenFileMapping(desiredAccess, FALSE, name);
+ if (_handle != 0)
+ return 0;
+ return ::GetLastError();
+ #endif
+ }
+
+ LPVOID Map(DWORD desiredAccess, UInt64 fileOffset, SIZE_T numberOfBytesToMap)
+ {
+ return ::MapViewOfFile(_handle, desiredAccess, (DWORD)(fileOffset >> 32), (DWORD)fileOffset, numberOfBytesToMap);
+ }
+
+ #ifndef UNDER_CE
+ LPVOID Map(DWORD desiredAccess, UInt64 fileOffset, SIZE_T numberOfBytesToMap, LPVOID baseAddress)
+ {
+ return ::MapViewOfFileEx(_handle, desiredAccess, (DWORD)(fileOffset >> 32), (DWORD)fileOffset, numberOfBytesToMap, baseAddress);
+ }
+ #endif
+};
+
+class CFileUnmapper
+{
+ const void *_data;
+public:
+ CFileUnmapper(const void *data) : _data(data) {}
+ ~CFileUnmapper() { ::UnmapViewOfFile(_data); }
+};
+
+}
+
+#endif