Initial Windows Port

1 files changed, 92 insertions, 0 deletions

diff --git a/src/os_win/os_map.c b/src/os_win/os_map.c
new file mode 100644
index 00000000000..105cf47dd51
--- /dev/null
+++ b/src/os_win/os_map.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 2008-2014 WiredTiger, Inc.
+ *	All rights reserved.
+ *
+ * See the file LICENSE for redistribution information.
+ */
+
+#include "wt_internal.h"
+
+/*
+ * __wt_mmap --
+ *	Map a file into memory.
+ */
+int
+__wt_mmap(WT_SESSION_IMPL *session, WT_FH *fh, void *mapp, size_t *lenp,
+   void** mappingcookie)
+{
+	void *map;
+
+	WT_RET(__wt_verbose(session, WT_VERB_FILEOPS,
+	    "%s: MapViewOfFile %" PRIuMAX " bytes", fh->name, (uintmax_t)fh->size));
+
+	*mappingcookie = CreateFileMapping(fh->filehandle, NULL, PAGE_READONLY, 0, 0, NULL);
+	if (*mappingcookie == NULL)
+		WT_RET_MSG(session, __wt_errno(),
+			"%s CreateFileMapping error: failed to map %" PRIuMAX " bytes",
+			fh->name, (uintmax_t)fh->size);
+
+	if ((map = MapViewOfFile(*mappingcookie, FILE_MAP_READ, 0, 0, fh->size)) == NULL) {
+		CloseHandle(*mappingcookie);
+		*mappingcookie = NULL;
+
+		WT_RET_MSG(session, __wt_errno(),
+		    "%s map error: failed to map %" PRIuMAX " bytes",
+		    fh->name, (uintmax_t)fh->size);
+	}
+
+	*(void **)mapp = map;
+	*lenp = (size_t)fh->size;
+	return (0);
+}
+
+/*
+ * __wt_mmap_preload --
+ *	Cause a section of a memory map to be faulted in.
+ */
+int
+__wt_mmap_preload(WT_SESSION_IMPL *session, const void *p, size_t size)
+{
+	WT_UNUSED(session);
+	WT_UNUSED(p);
+	WT_UNUSED(size);
+
+	return (0);
+}
+
+/*
+ * __wt_mmap_discard --
+ *	Discard a chunk of the memory map.
+ */
+int
+__wt_mmap_discard(WT_SESSION_IMPL *session, void *p, size_t size)
+{
+	WT_UNUSED(session);
+	WT_UNUSED(p);
+	WT_UNUSED(size);
+	return (0);
+}
+
+/*
+ * __wt_munmap --
+ *	Remove a memory mapping.
+ */
+int
+__wt_munmap(WT_SESSION_IMPL *session, WT_FH *fh, void *map, size_t len,
+   void** mappingcookie)
+{
+	WT_RET(__wt_verbose(session, WT_VERB_FILEOPS,
+	    "%s: UnmapViewOfFile %" PRIuMAX " bytes", fh->name, (uintmax_t)len));
+
+	if (UnmapViewOfFile(map) == 0) {
+		WT_RET_MSG(session, __wt_errno(),
+		    "%s UnmapViewofFile error: failed to unmap %" PRIuMAX " bytes",
+		    fh->name, (uintmax_t)len);
+	}
+
+	CloseHandle(*mappingcookie);
+
+	*mappingcookie = 0;
+
+	return (0);
+}