2 * Copyright (c) 2010 Your File System Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Code for handling statistics gathering within RX, and for mapping the
29 * internal representation into an external one
31 #include <afsconfig.h>
32 #include <afs/param.h>
39 /* no kmutex, no atomic emulation...*/
40 #include "rx/rx_kcommon.h"
44 #include "rx_atomic.h"
50 * rx_stats_mutex protects the non-atomic members of the rx_stats structure
52 #if defined(RX_ENABLE_LOCKS)
53 afs_kmutex_t rx_stats_mutex;
56 struct rx_statisticsAtomic rx_stats;
59 * Return the internal statistics collected by rx
62 * A statistics structure which must be freed using rx_FreeStatistics
64 * Takes, and releases rx_stats_mutex
66 struct rx_statistics *
67 rx_GetStatistics(void) {
68 struct rx_statistics *stats = rxi_Alloc(sizeof(struct rx_statistics));
69 MUTEX_ENTER(&rx_stats_mutex);
70 memcpy(stats, &rx_stats, sizeof(struct rx_statistics));
71 MUTEX_EXIT(&rx_stats_mutex);
77 * Free a statistics block allocated by rx_GetStatistics
80 * The statistics block to free
83 rx_FreeStatistics(struct rx_statistics **stats) {
85 rxi_Free(*stats, sizeof(struct rx_statistics));
91 * Zero the internal statistics structure
97 rxi_ResetStatistics(void) {
98 memset(&rx_stats, 0, sizeof(struct rx_statisticsAtomic));