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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/* $Id: mp-darwin.cpp $ */
/** @file
* IPRT - Multiprocessor, Darwin.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_SYSTEM
#include <iprt/types.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/sysctl.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <errno.h>
#include <mach/mach.h>
#include <iprt/mp.h>
#include <iprt/cpuset.h>
#include <iprt/assert.h>
#include <iprt/string.h>
/**
* Internal worker that determines the max possible logical CPU count (hyperthreads).
*
* @returns Max cpus.
*/
static RTCPUID rtMpDarwinMaxLogicalCpus(void)
{
int cCpus = -1;
size_t cb = sizeof(cCpus);
int rc = sysctlbyname("hw.logicalcpu_max", &cCpus, &cb, NULL, 0);
if (rc != -1 && cCpus >= 1)
return cCpus;
AssertFailed();
return 1;
}
/**
* Internal worker that determines the max possible physical core count.
*
* @returns Max cpus.
*/
static RTCPUID rtMpDarwinMaxPhysicalCpus(void)
{
int cCpus = -1;
size_t cb = sizeof(cCpus);
int rc = sysctlbyname("hw.physicalcpu_max", &cCpus, &cb, NULL, 0);
if (rc != -1 && cCpus >= 1)
return cCpus;
AssertFailed();
return 1;
}
#if 0 /* unused */
/**
* Internal worker that determines the current number of logical CPUs (hyperthreads).
*
* @returns Max cpus.
*/
static RTCPUID rtMpDarwinOnlineLogicalCpus(void)
{
int cCpus = -1;
size_t cb = sizeof(cCpus);
int rc = sysctlbyname("hw.logicalcpu", &cCpus, &cb, NULL, 0);
if (rc != -1 && cCpus >= 1)
return cCpus;
AssertFailed();
return 1;
}
#endif /* unused */
/**
* Internal worker that determines the current number of physical CPUs.
*
* @returns Max cpus.
*/
static RTCPUID rtMpDarwinOnlinePhysicalCpus(void)
{
int cCpus = -1;
size_t cb = sizeof(cCpus);
int rc = sysctlbyname("hw.physicalcpu", &cCpus, &cb, NULL, 0);
if (rc != -1 && cCpus >= 1)
return cCpus;
AssertFailed();
return 1;
}
/** @todo RTmpCpuId(). */
RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu)
{
return idCpu < RTCPUSET_MAX_CPUS && idCpu < rtMpDarwinMaxLogicalCpus() ? idCpu : -1;
}
RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu)
{
return (unsigned)iCpu < rtMpDarwinMaxLogicalCpus() ? iCpu : NIL_RTCPUID;
}
RTDECL(RTCPUID) RTMpGetMaxCpuId(void)
{
return rtMpDarwinMaxLogicalCpus() - 1;
}
RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu)
{
#if 0
return RTMpIsCpuPossible(idCpu);
#else
/** @todo proper ring-3 support on darwin, see @bugref{3014}. */
natural_t nCpus;
processor_basic_info_t pinfo;
mach_msg_type_number_t count;
kern_return_t krc = host_processor_info(mach_host_self(),
PROCESSOR_BASIC_INFO, &nCpus, (processor_info_array_t*)&pinfo, &count);
AssertReturn (krc == KERN_SUCCESS, true);
bool isOnline = idCpu < nCpus ? pinfo[idCpu].running : false;
vm_deallocate(mach_task_self(), (vm_address_t)pinfo, count * sizeof(*pinfo));
return isOnline;
#endif
}
RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu)
{
return idCpu != NIL_RTCPUID
&& idCpu < rtMpDarwinMaxLogicalCpus();
}
RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet)
{
#if 0
RTCPUID cCpus = rtMpDarwinMaxLogicalCpus();
return RTCpuSetFromU64(RT_BIT_64(cCpus) - 1);
#else
RTCpuSetEmpty(pSet);
RTCPUID cMax = rtMpDarwinMaxLogicalCpus();
for (RTCPUID idCpu = 0; idCpu < cMax; idCpu++)
if (RTMpIsCpuPossible(idCpu))
RTCpuSetAdd(pSet, idCpu);
return pSet;
#endif
}
RTDECL(RTCPUID) RTMpGetCount(void)
{
return rtMpDarwinMaxLogicalCpus();
}
RTDECL(RTCPUID) RTMpGetCoreCount(void)
{
return rtMpDarwinMaxPhysicalCpus();
}
RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet)
{
#if 0
return RTMpGetSet(pSet);
#else
RTCpuSetEmpty(pSet);
RTCPUID cMax = rtMpDarwinMaxLogicalCpus();
for (RTCPUID idCpu = 0; idCpu < cMax; idCpu++)
if (RTMpIsCpuOnline(idCpu))
RTCpuSetAdd(pSet, idCpu);
return pSet;
#endif
}
RTDECL(RTCPUID) RTMpGetOnlineCount(void)
{
RTCPUSET Set;
RTMpGetOnlineSet(&Set);
return RTCpuSetCount(&Set);
}
RTDECL(RTCPUID) RTMpGetOnlineCoreCount(void)
{
return rtMpDarwinOnlinePhysicalCpus();
}
RTDECL(uint32_t) RTMpGetCurFrequency(RTCPUID idCpu)
{
/** @todo figure out how to get the current cpu speed on darwin. Have to check what powermanagement does. */
NOREF(idCpu);
return 0;
}
RTDECL(uint32_t) RTMpGetMaxFrequency(RTCPUID idCpu)
{
if (!RTMpIsCpuOnline(idCpu))
return 0;
/*
* Try the 'hw.cpufrequency_max' one.
*/
uint64_t CpuFrequencyMax = 0;
size_t cb = sizeof(CpuFrequencyMax);
int rc = sysctlbyname("hw.cpufrequency_max", &CpuFrequencyMax, &cb, NULL, 0);
if (!rc)
return (CpuFrequencyMax + 999999) / 1000000;
/*
* Use the deprecated one.
*/
int aiMib[2];
aiMib[0] = CTL_HW;
aiMib[1] = HW_CPU_FREQ;
int cCpus = -1;
cb = sizeof(cCpus);
rc = sysctl(aiMib, RT_ELEMENTS(aiMib), &cCpus, &cb, NULL, 0);
if (rc != -1 && cCpus >= 1)
return cCpus;
AssertFailed();
return 0;
}
|
