63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
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// A wrapper class of Windows shared memory
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#ifndef BASE_SHARED_MEMORY_H_
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#define BASE_SHARED_MEMORY_H_
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#include "base/base_config.h"
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#if defined(OS_WIN)
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#include "base/base_export.h"
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#include <assert.h>
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#include <windows.h>
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namespace nbase
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{
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namespace win32
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{
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class BASE_EXPORT SharedMemory
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{
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public:
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SharedMemory() : mapping_(NULL) {}
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~SharedMemory() { Close(); };
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bool Create(const wchar_t *name, int size);
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bool Open(const wchar_t *name);
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void Close();
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class MappedView
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{
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public:
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MappedView() : view_(NULL) {}
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~MappedView() { CloseView(); }
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bool OpenView(SharedMemory *shared_memory, bool read_write);
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void CloseView();
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unsigned char *view() { return view_; }
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private:
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unsigned char *view_;
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};
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template<class T>
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class MappedViewOf : public MappedView
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{
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public:
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T *get() { return reinterpret_cast<T*>(view()); }
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T* operator->()
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{
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assert(view() != NULL);
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return reinterpret_cast<T*>(view());
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}
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};
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private:
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friend class MappedView;
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HANDLE mapping_;
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};
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} // namespace win32
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} // namespace nbase
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#endif // OS_WIN
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#endif // BASE_SHARED_MEMORY_H_
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