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
|
/*
* Copyright (C) 1996-2025 The Squid Software Foundation and contributors
*
* Squid software is distributed under GPLv2+ license and includes
* contributions from numerous individuals and organizations.
* Please see the COPYING and CONTRIBUTORS files for details.
*/
#ifndef SQUID_COMPAT_CPU_H
#define SQUID_COMPAT_CPU_H
#include <cerrno>
#if HAVE_SCHED_H
#include <sched.h>
#endif
#if !HAVE_CPU_AFFINITY
/* failing replacements to minimize the number of if-HAVE_CPU_AFFINITYs */
#if !HAVE_CPU_SET_T
typedef struct {
int bits;
} cpu_set_t;
#endif
inline int sched_setaffinity(int, size_t, cpu_set_t *) { return ENOTSUP; }
inline int sched_getaffinity(int, size_t, cpu_set_t *) { return ENOTSUP; }
#endif /* HAVE_CPU_AFFINITY */
#if !defined(CPU_SETSIZE)
#define CPU_SETSIZE 0
#endif
#if !defined(CPU_ZERO)
#define CPU_ZERO(set) (void)0
#endif
#if !defined(CPU_SET)
#define CPU_SET(cpunum, cpuset) CpuSet(cpunum, cpuset)
inline void CpuSet(int, const cpu_set_t *) {}
#endif
#if !defined(CPU_CLR)
#define CPU_CLR(cpu, set) (void)0
#endif
#if !defined(CPU_ISSET)
#define CPU_ISSET(cpunum, cpuset) CpuIsSet(cpunum, cpuset)
inline bool CpuIsSet(int, const cpu_set_t *) { return false; }
#endif
// glibc prior to 2.6 lacks CPU_COUNT
#ifndef CPU_COUNT
#define CPU_COUNT(set) CpuCount(set)
/// CPU_COUNT replacement
inline int
CpuCount(const cpu_set_t *set)
{
int count = 0;
for (int i = 0; i < CPU_SETSIZE; ++i) {
if (CPU_ISSET(i, set))
++count;
}
return count;
}
#endif /* CPU_COUNT */
// glibc prior to 2.7 lacks CPU_AND
#ifndef CPU_AND
#define CPU_AND(destset, srcset1, srcset2) CpuAnd((destset), (srcset1), (srcset2))
/// CPU_AND replacement
inline void
CpuAnd(cpu_set_t *destset, const cpu_set_t *srcset1, const cpu_set_t *srcset2)
{
for (int i = 0; i < CPU_SETSIZE; ++i) {
if (CPU_ISSET(i, srcset1) && CPU_ISSET(i, srcset2))
CPU_SET(i, destset);
else
CPU_CLR(i, destset);
}
}
#endif /* CPU_AND */
#endif /* SQUID_COMPAT_CPU_H */
|
