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-rw-r--r--include/mpool.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/mpool.h b/include/mpool.h
index 910e078..17efb3f 100644
--- a/include/mpool.h
+++ b/include/mpool.h
@@ -33,6 +33,9 @@
* @(#)mpool.h 8.1 (Berkeley) 6/2/93
*/
+#ifndef _MPOOL_H_
+#define _MPOOL_H_
+
/*
* The memory pool scheme is a simple one. Each in memory page is referenced
* by a bucket which is threaded in three ways. All active pages are threaded
@@ -133,3 +136,5 @@ int mpool_close __P((MPOOL *));
void mpool_stat __P((MPOOL *));
#endif
__END_DECLS
+
+#endif
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