These functions can be used as HASH and KEY_EQUAL functions
when defining new maps with "struct object *" as their key.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
Makefile | 1 +
map-object.h | 19 +++++++++++++++++++
2 files changed, 20 insertions(+)
create mode 100644 map-object.h
diff --git a/Makefile b/Makefile
index d512f27..1d29a95 100644
--- a/Makefile
+++ b/Makefile
@@ -633,6 +633,7 @@ LIB_H += map-decl.h
LIB_H += map-done.h
LIB_H += map-impl.h
LIB_H += map-init.h
+LIB_H += map-object.h
LIB_H += merge-file.h
LIB_H += merge-recursive.h
LIB_H += mergesort.h
diff --git a/map-object.h b/map-object.h
new file mode 100644
index 0000000..4f98413
--- /dev/null
+++ b/map-object.h
@@ -0,0 +1,19 @@
+#ifndef MAP_OBJECT_H
+#define MAP_OBJECT_H
+
+#include "object.h"
+
+static unsigned int hash_obj(const struct object *obj, unsigned int n)
+{
+ unsigned int hash;
+
+ memcpy(&hash, obj->sha1, sizeof(unsigned int));
+ return hash % n;
+}
+
+static int obj_equal(const struct object *a, const struct object *b)
+{
+ return a == b;
+}
+
+#endif /* MAP_OBJECT_H */
--
1.7.12.rc1.7.g7a223a6
--
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