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authorKonstantin Belousov <kib@FreeBSD.org>2013-08-30 07:37:45 +0000
committerKonstantin Belousov <kib@FreeBSD.org>2013-08-30 07:37:45 +0000
commitdc872d46da43b06bb7ea66d59a30f8778a740dda (patch)
tree7e32c2dc4fb05970952fa71ce5f8fee61a31c126 /sys/sys/_unrhdr.h
parent7bae7ac04d812480f9d5395d6ee52a7deac03015 (diff)
downloadsrc-dc872d46da43b06bb7ea66d59a30f8778a740dda.tar.gz
src-dc872d46da43b06bb7ea66d59a30f8778a740dda.zip
Move the definition of the struct unrhdr into a separate header file,
to allow embedding the struct. Add init_unrhdr(9) initializer, which sets up preallocated unrhdr. Reviewed by: alc Tested by: pho, bf
Notes
Notes: svn path=/head/; revision=255057
Diffstat (limited to 'sys/sys/_unrhdr.h')
-rw-r--r--sys/sys/_unrhdr.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/sys/sys/_unrhdr.h b/sys/sys/_unrhdr.h
new file mode 100644
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--- /dev/null
+++ b/sys/sys/_unrhdr.h
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2004 Poul-Henning Kamp
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_UNRHDR_H
+#define _SYS_UNRHDR_H
+
+#include <sys/queue.h>
+
+struct mtx;
+
+/* Header element for a unr number space. */
+
+struct unrhdr {
+ TAILQ_HEAD(unrhd,unr) head;
+ u_int low; /* Lowest item */
+ u_int high; /* Highest item */
+ u_int busy; /* Count of allocated items */
+ u_int alloc; /* Count of memory allocations */
+ u_int first; /* items in allocated from start */
+ u_int last; /* items free at end */
+ struct mtx *mtx;
+ TAILQ_HEAD(unrfr,unr) ppfree; /* Items to be freed after mtx
+ lock dropped */
+};
+
+#endif