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
|
/* $Id: mp-freebsd.cpp 20449 2009-06-09 22:23:42Z vboxsync $ */
/** @file
* IPRT - Multiprocessor, FreeBSD.
*/
/*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_DEFAULT
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <sys/sysctl.h>
#include <iprt/mp.h>
#include <iprt/cpuset.h>
#include <iprt/assert.h>
#include <iprt/string.h>
#include <iprt/alloc.h>
#include <iprt/log.h>
#include <iprt/once.h>
#include <iprt/critsect.h>
RTDECL(uint32_t) RTMpGetCurFrequency(RTCPUID idCpu)
{
int uFreqCurr = 0;
size_t cbParameter = sizeof(uFreqCurr);
/* CPU's have a common frequency. */
int rc = sysctlbyname("dev.cpu.0.freq", &uFreqCurr, &cbParameter, NULL, NULL);
if (rc)
return 0;
return (uint32_t)uFreqCurr;
}
RTDECL(uint32_t) RTMpGetMaxFrequency(RTCPUID idCpu)
{
char szFreqLevels[20]; /* Should be enough to get the highest level which is always the first. */
size_t cbFreqLevels = sizeof(szFreqLevels);
memset(szFreqLevels, 0, sizeof(szFreqLevels));
/*
* CPU 0 has the freq levels entry. ENOMEM is ok as we don't need all supported
* levels but only the first one.
*/
int rc = sysctlbyname("dev.cpu.0.freq_levels", szFreqLevels, &cbFreqLevels, NULL, NULL);
if ( (rc && (errno != ENOMEM))
|| (cbFreqLevels == 0))
return 0;
/* Clear everything starting from the '/' */
unsigned i = 0;
do
{
if (szFreqLevels[i] == '/')
{
memset(&szFreqLevels[i], 0, sizeof(szFreqLevels) - i);
break;
}
i++;
} while (i < sizeof(szFreqLevels));
/* Returns 0 on failure. */
return RTStrToUInt32(szFreqLevels);
}
RTDECL(RTCPUID) RTMpGetOnlineCount(void)
{
/*
* FreeBSD has sysconf.
*/
return sysconf(_SC_NPROCESSORS_ONLN);
}
|
