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
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 #include "rx_atomic.h"
45 * rx_stats_mutex protects the non-atomic members of the rx_stats structure
47 #if defined(RX_ENABLE_LOCKS)
48 afs_kmutex_t rx_stats_mutex;
51 struct rx_statisticsAtomic rx_stats;
54 * Return the internal statistics collected by rx
57 * A statistics structure which must be freed using rx_FreeStatistics
59 * Takes, and releases rx_stats_mutex
61 struct rx_statistics *
62 rx_GetStatistics(void) {
63 struct rx_statistics *stats = rxi_Alloc(sizeof(struct rx_statistics));
64 MUTEX_ENTER(&rx_stats_mutex);
65 memcpy(stats, &rx_stats, sizeof(struct rx_statistics));
66 MUTEX_EXIT(&rx_stats_mutex);
72 * Free a statistics block allocated by rx_GetStatistics
75 * The statistics block to free
78 rx_FreeStatistics(struct rx_statistics **stats) {
80 rxi_Free(*stats, sizeof(struct rx_statistics));
86 * Zero the internal statistics structure
92 rxi_ResetStatistics(void) {
93 memset(&rx_stats, 0, sizeof(struct rx_statisticsAtomic));