1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "common.h"
#include <sys/m_param.h>
static perfstat_cpu_total_t cpustat;
static int fetched;
void
cpu_total_init(int first)
{
if (!first)
/* TODO ... not sure if/when we'll use this re-init hook */
return;
}
void
cpu_total_prefetch(void)
{
int i;
fetched = 0;
}
static __uint64_t
cpu_total_derived(pmdaMetric *mdesc, int inst)
{
pmID pmid;
__pmID_int *ip = (__pmID_int *)&pmid;
__uint64_t val;
pmid = mdesc->m_desc.pmid;
ip->domain = 0;
switch (pmid) {
default:
fprintf(stderr, "cpu_total_derived: Botch: no method for pmid %s\n",
pmIDStr(mdesc->m_desc.pmid));
val = 0;
break;
}
#ifdef PCP_DEBUG
if ((pmDebug & (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) == (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) {
/* desperate */
fprintf(stderr, "cpu_total_derived: pmid %s inst %d val %llu\n",
pmIDStr(mdesc->m_desc.pmid), inst, val);
}
#endif
return val;
}
int
cpu_total_fetch(pmdaMetric *mdesc, int inst, pmAtomValue *atom)
{
int offset;
if (fetched == 0) {
int sts;
sts = perfstat_cpu_total(NULL, &cpustat, sizeof(perfstat_cpu_total_t), 1);
if (sts != 1) {
/* TODO - how to find/decode errors? */
fprintf(stderr, "perfstat_cpu_total: failed %s\n", osstrerror());
fetched = -1;
}
else
fetched = 1;
}
if (fetched != 1)
return 0;
offset = ((metricdesc_t *)mdesc->m_user)->md_offset;
if (offset == OFF_NOVALUES)
return 0;
if (mdesc->m_desc.type == PM_TYPE_U64) {
if (offset == OFF_DERIVED)
atom->ull = cpu_total_derived(mdesc, inst);
else {
__uint64_t *ullp;
ullp = (__uint64_t *)&((char *)&cpustat)[offset];
atom->ull = *ullp;
}
if (mdesc->m_desc.units.scaleTime == PM_TIME_MSEC) {
/* assumed to be CPU time */
atom->ull *= 1000 / HZ;
}
#ifdef PCP_DEBUG
if ((pmDebug & (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) == (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) {
/* desperate */
fprintf(stderr, "cpu_total_fetch: pmid %s inst %d val %llu\n",
pmIDStr(mdesc->m_desc.pmid), inst, atom->ull);
}
#endif
}
else {
if (offset == OFF_DERIVED)
atom->ul = (__uint32_t)cpu_total_derived(mdesc, inst);
else {
__uint32_t *ulp;
ulp = (__uint32_t *)&((char *)&cpustat)[offset];
atom->ul = *ulp;
}
if (mdesc->m_desc.units.scaleTime == PM_TIME_MSEC) {
/* assumed to be CPU time */
atom->ul *= 1000 / HZ;
}
#ifdef PCP_DEBUG
if ((pmDebug & (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) == (DBG_TRACE_APPL0|DBG_TRACE_APPL2)) {
/* desperate */
fprintf(stderr, "cpu_total_fetch: pmid %s inst %d val %lu\n",
pmIDStr(mdesc->m_desc.pmid), inst, atom->ul);
}
#endif
}
return 1;
}
|
