C 使用共享記憶體實現程序間通訊

server完整原始碼：

#pragma region includes

#include #include #pragma endregion
#define map_prefix l"local\\"
#define map_name l"samplemap"
#define full_map_name map_prefix map_name
#define map_size 65536
// file offset where the view is to begin.
#define view_offset 0
#define view_size 1024
// must be less than the view size (view_size).
#define message l"message from the first process."
int wmain(int argc, wchar_t* argv)
// process.
pview = mapviewoffile(
hmapfile, // handle of the map object
file_map_all_access, // read and write access
0, // high-order dword of the file offset 
view_offset, // low-order dword of the file offset 
view_size // the number of bytes to map to view
);if (pview == null)
// prepare a message to be written to the view.
pwstr pszmessage = message;
dword cbmessage = (wcslen(pszmessage) + 1) * sizeof(*pszmessage);
// write the message to the view.
memcpy_s(pview, view_size, pszmessage, cbmessage);
wprintf(l"this message is written to the view:\n\"%s\"\n",
pszmessage);
// wait to clean up resources and stop the process.
wprintf(l"press enter to clean up resources and quit");
getchar();
cleanup:
if (hmapfile)
closehandle(hmapfile);
hmapfile = null;
}return 0;
}

#pragma region includes

#include #include #pragma endregion
#define map_prefix l"local\\"
#define map_name l"samplemap"
#define full_map_name map_prefix map_name
// file offset where the view is to begin.
#define view_offset 0
#define view_size 1024
int wmain(int argc, wchar_t* argv)
// process.
pview = mapviewoffile(
hmapfile, // handle of the map object
file_map_read, // read access
0, // high-order dword of the file offset 
view_offset, // low-order dword of the file offset
view_size // the number of bytes to map to view
);if (pview == null)
// read and display the content in view.
// wait to clean up resources and stop the process.
wprintf(l"press enter to clean up resources and quit");
getchar();
cleanup:
if (hmapfile)
closehandle(hmapfile);
hmapfile = null;
}return 0;
}

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