1 files changed, 61 insertions, 0 deletions
diff --git a/Plugins/sharemem.h b/Plugins/sharemem.h
new file mode 100644
index 0000000..a26d198
--- /dev/null
+++ b/Plugins/sharemem.h
@@ -0,0 +1,61 @@
+#ifndef __SHAREMEM_H
+#define __SHAREMEM_H
+
+#include <windows.h>
+#include <memory.h>
+
+//
+// allocate named shared memory
+//
+LPVOID smalloc(HANDLE *h, char *name, DWORD size)
+{
+	LPVOID p;
+
+	*h = CreateFileMapping(
+	 INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0,
+	 size, name
+	);
+
+	if(*h==NULL) return(NULL);
+
+	p = MapViewOfFile( *h, FILE_MAP_WRITE, 0, 0, 0);
+
+	if(p==NULL)
+	{
+		CloseHandle(*h);
+		return(NULL);
+	}
+	return(p);
+}
+
+//
+// open access to named shared memory
+//
+LPVOID smopen(HANDLE *h, char *name)
+{
+	LPVOID p;
+
+	*h = OpenFileMapping(FILE_MAP_ALL_ACCESS, TRUE, name);
+
+	if(*h==NULL) return(NULL);
+
+	p = MapViewOfFile(*h, FILE_MAP_WRITE, 0, 0, 0);
+
+	if(p==NULL)
+	{
+		CloseHandle(*h);
+		return(NULL);
+	}
+	return(p);
+}
+
+//
+// cleanup
+//
+void smfree(HANDLE *h, LPVOID p)
+{
+	UnmapViewOfFile(p);
+	CloseHandle(*h);
+}
+
+#endif