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.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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>
40 /* no kmutex, no atomic emulation...*/
41 #include "rx/rx_kcommon.h"
45 #include "rx_atomic.h"
51 * rx_stats_mutex protects the non-atomic members of the rx_stats structure
53 #if defined(RX_ENABLE_LOCKS)
54 afs_kmutex_t rx_stats_mutex;
57 struct rx_statisticsAtomic rx_stats;
60 * Return the internal statistics collected by rx
63 * A statistics structure which must be freed using rx_FreeStatistics
65 * Takes, and releases rx_stats_mutex
67 struct rx_statistics *
68 rx_GetStatistics(void) {
69 struct rx_statistics *stats = rxi_Alloc(sizeof(struct rx_statistics));
71 MUTEX_ENTER(&rx_stats_mutex);
72 opr_StaticAssert(sizeof(*stats) == sizeof(rx_stats));
73 memcpy(stats, &rx_stats, sizeof(struct rx_statistics));
74 MUTEX_EXIT(&rx_stats_mutex);
80 * Free a statistics block allocated by rx_GetStatistics
83 * The statistics block to free
86 rx_FreeStatistics(struct rx_statistics **stats) {
88 rxi_Free(*stats, sizeof(struct rx_statistics));
94 * Zero the internal statistics structure
100 rxi_ResetStatistics(void) {
101 memset(&rx_stats, 0, sizeof(struct rx_statisticsAtomic));