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0
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1 /* Get the system load averages.
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16
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2 Copyright (C) 1985, 86, 87, 88, 89, 91, 92, 93, 1994, 1995
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84
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3 Free Software Foundation, Inc.
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4
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5 This file is part of XEmacs.
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0
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6
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84
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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0
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11
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84
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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0
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16
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84
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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0
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22 /* Compile-time symbols that this file uses:
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23
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24 FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist.
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25 KERNEL_FILE Pathname of the kernel to nlist.
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26 LDAV_CVT() Scale the load average from the kernel.
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27 Returns a double.
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28 LDAV_SYMBOL Name of kernel symbol giving load average.
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29 LOAD_AVE_TYPE Type of the load average array in the kernel.
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30 Must be defined unless one of
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31 apollo, DGUX, NeXT, or UMAX is defined;
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32 otherwise, no load average is available.
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33 NLIST_STRUCT Include nlist.h, not a.out.h, and
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34 the nlist n_name element is a pointer,
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35 not an array.
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36 NLIST_NAME_UNION struct nlist has an n_un member, not n_name.
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37 LINUX_LDAV_FILE [__linux__]: File containing load averages.
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38
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39 Specific system predefines this file uses, aside from setting
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40 default values if not emacs:
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41
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42 apollo
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43 BSD Real BSD, not just BSD-like.
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44 convex
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45 DGUX
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46 hpux
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47 MSDOS No-op for MSDOS.
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48 NeXT
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49 sgi
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50 sequent Sequent Dynix 3.x.x (BSD)
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51 _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
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52 sony_news NEWS-OS (works at least for 4.1C)
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53 UMAX
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54 UMAX4_3
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55 WIN32 No-op for Windows95/NT.
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56 __linux__ Linux: assumes /proc filesystem mounted.
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57 Support from Michael K. Johnson.
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58 __NetBSD__ NetBSD: assumes /kern filesystem mounted.
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380
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59 __OpenBSD__ OpenBSD: ditto.
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0
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60
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61 In addition, to avoid nesting many #ifdefs, we internally set
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62 LDAV_DONE to indicate that the load average has been computed.
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63
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64 We also #define LDAV_PRIVILEGED if a program will require
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65 special installation to be able to call getloadavg. */
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66
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67 /* This should always be first. */
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68 #ifdef HAVE_CONFIG_H
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69 #include <config.h>
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70 #endif
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71
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398
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72 #ifndef WINDOWSNT
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73 #ifndef __CYGWIN32__
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74
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0
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75 #include <sys/types.h>
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76
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77 /* Both the Emacs and non-Emacs sections want this. Some
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78 configuration files' definitions for the LOAD_AVE_CVT macro (like
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79 sparc.h's) use macros like FSCALE, defined here. */
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80 #ifdef unix
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81 #include <sys/param.h>
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82 #endif
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83
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48
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84 #ifdef XEMACS
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272
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85 #include "lisp.h"
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86 #include "sysfile.h" /* for encapsulated open, close, read, write */
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48
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87 #endif /* XEMACS */
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0
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88
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89 /* Exclude all the code except the test program at the end
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90 if the system has its own `getloadavg' function.
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91
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92 The declaration of `errno' is needed by the test program
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93 as well as the function itself, so it comes first. */
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94
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95 #include <errno.h>
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96
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97 #ifndef HAVE_GETLOADAVG
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98
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99 /* The existing Emacs configuration files define a macro called
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100 LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
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101 returns the load average multiplied by 100. What we actually want
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102 is a macro called LDAV_CVT, which returns the load average as an
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103 unmultiplied double.
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104
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105 For backwards compatibility, we'll define LDAV_CVT in terms of
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106 LOAD_AVE_CVT, but future machine config files should just define
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107 LDAV_CVT directly. */
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108
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109 #if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT)
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110 #define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
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111 #endif
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112
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48
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113 #ifdef XEMACS
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114 #if defined (HAVE_KSTAT_H)
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115 #include <kstat.h>
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116 #endif /* HAVE_KSTAT_H */
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117 #endif /* XEMACS */
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118
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0
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119 #if !defined (BSD) && defined (ultrix)
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120 /* Ultrix behaves like BSD on Vaxen. */
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121 #define BSD
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122 #endif
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123
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124 #ifdef NeXT
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125 /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
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126 conflicts with the definition understood in this file, that this
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127 really is BSD. */
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128 #undef BSD
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129
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130 /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being
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131 defined to mean that the nlist method should be used, which is not true. */
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132 #undef FSCALE
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133 #endif
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134
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135 /* Set values that are different from the defaults, which are
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136 set a little farther down with #ifndef. */
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137
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138
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139 /* Some shorthands. */
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140
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141 #if defined (HPUX) && !defined (hpux)
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142 #define hpux
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143 #endif
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144
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145 #if defined(hp300) && !defined(hpux)
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146 #define MORE_BSD
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147 #endif
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148
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149 #if defined(ultrix) && defined(mips)
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150 #define decstation
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151 #endif
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152
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48
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153 #if (defined(sun) && defined(SVR4)) || defined (SOLARIS2)
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0
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154 #define SUNOS_5
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155 #endif
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156
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157 #if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
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158 #define OSF_ALPHA
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151
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159 #include <netdb.h>
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160 #include <netinet/in.h> /* Needed for Digital UNIX V3 */
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161 #include <net/proto_net.h>
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0
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162 #include <sys/table.h>
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163 #endif
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164
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165 #if defined (__osf__) && (defined (mips) || defined (__mips__))
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166 #define OSF_MIPS
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167 #include <sys/table.h>
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168 #endif
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169
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170 /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
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171 default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
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172 that with a couple of other things and we'll have a unique match. */
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173 #if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
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174 #define tek4300 /* Define by emacs, but not by other users. */
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175 #endif
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176
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177
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178 /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
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179 #ifndef LOAD_AVE_TYPE
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180
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181 #ifdef MORE_BSD
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182 #define LOAD_AVE_TYPE long
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183 #endif
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184
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185 #ifdef sun
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186 #define LOAD_AVE_TYPE long
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187 #endif
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188
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189 #ifdef decstation
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190 #define LOAD_AVE_TYPE long
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191 #endif
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192
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193 #ifdef _SEQUENT_
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194 #define LOAD_AVE_TYPE long
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195 #endif
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196
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197 #ifdef sgi
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198 #define LOAD_AVE_TYPE long
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199 #endif
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200
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201 #ifdef SVR4
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202 #define LOAD_AVE_TYPE long
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203 #endif
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204
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205 #ifdef sony_news
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206 #define LOAD_AVE_TYPE long
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207 #endif
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208
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209 #ifdef sequent
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210 #define LOAD_AVE_TYPE long
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211 #endif
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212
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213 #ifdef OSF_ALPHA
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214 #define LOAD_AVE_TYPE long
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215 #endif
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216
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217 #if defined (ardent) && defined (titan)
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218 #define LOAD_AVE_TYPE long
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219 #endif
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220
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221 #ifdef tek4300
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222 #define LOAD_AVE_TYPE long
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223 #endif
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224
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225 #if defined(alliant) && defined(i860) /* Alliant FX/2800 */
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226 #define LOAD_AVE_TYPE long
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227 #endif
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228
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229 #ifdef _AIX
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230 #define LOAD_AVE_TYPE long
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231 #endif
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232
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233 #ifdef convex
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234 #define LOAD_AVE_TYPE double
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235 #ifndef LDAV_CVT
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236 #define LDAV_CVT(n) (n)
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237 #endif
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238 #endif
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239
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240 #endif /* No LOAD_AVE_TYPE. */
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241
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242 #ifdef OSF_ALPHA
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243 /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
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244 according to ghazi@noc.rutgers.edu. */
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245 #undef FSCALE
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246 #define FSCALE 1024.0
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247 #endif
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248
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249 #if defined(alliant) && defined(i860) /* Alliant FX/2800 */
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250 /* <sys/param.h> defines an incorrect value for FSCALE on an
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251 Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
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252 #undef FSCALE
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253 #define FSCALE 100.0
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254 #endif
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255
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256
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257 #ifndef FSCALE
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258
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259 /* SunOS and some others define FSCALE in sys/param.h. */
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260
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261 #ifdef MORE_BSD
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262 #define FSCALE 2048.0
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263 #endif
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264
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265 #if defined(MIPS) || defined(SVR4) || defined(decstation)
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266 #define FSCALE 256
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267 #endif
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268
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269 #if defined (sgi) || defined (sequent)
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270 /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
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271 above under #ifdef MIPS. But we want the sgi value. */
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272 #undef FSCALE
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273 #define FSCALE 1000.0
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274 #endif
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275
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276 #if defined (ardent) && defined (titan)
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277 #define FSCALE 65536.0
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278 #endif
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279
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280 #ifdef tek4300
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281 #define FSCALE 100.0
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282 #endif
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283
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284 #ifdef _AIX
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285 #define FSCALE 65536.0
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286 #endif
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287
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288 #endif /* Not FSCALE. */
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289
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290 #if !defined (LDAV_CVT) && defined (FSCALE)
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291 #define LDAV_CVT(n) (((double) (n)) / FSCALE)
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292 #endif
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293
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294 /* VAX C can't handle multi-line #ifs, or lines longer that 256 characters. */
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295 #ifndef NLIST_STRUCT
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296
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297 #ifdef MORE_BSD
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298 #define NLIST_STRUCT
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299 #endif
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300
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301 #ifdef sun
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302 #define NLIST_STRUCT
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303 #endif
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304
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305 #ifdef decstation
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306 #define NLIST_STRUCT
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307 #endif
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308
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309 #ifdef hpux
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310 #define NLIST_STRUCT
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311 #endif
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312
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313 #if defined (_SEQUENT_) || defined (sequent)
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314 #define NLIST_STRUCT
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315 #endif
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316
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317 #ifdef sgi
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318 #define NLIST_STRUCT
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319 #endif
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320
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321 #ifdef SVR4
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322 #define NLIST_STRUCT
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323 #endif
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324
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325 #ifdef sony_news
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326 #define NLIST_STRUCT
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327 #endif
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328
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329 #ifdef OSF_ALPHA
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330 #define NLIST_STRUCT
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331 #endif
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332
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333 #if defined (ardent) && defined (titan)
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334 #define NLIST_STRUCT
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335 #endif
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336
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337 #ifdef tek4300
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338 #define NLIST_STRUCT
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339 #endif
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340
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341 #ifdef butterfly
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342 #define NLIST_STRUCT
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343 #endif
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344
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345 #if defined(alliant) && defined(i860) /* Alliant FX/2800 */
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346 #define NLIST_STRUCT
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347 #endif
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348
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349 #ifdef _AIX
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350 #define NLIST_STRUCT
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351 #endif
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352
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353 #endif /* defined (NLIST_STRUCT) */
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354
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355
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356 #if defined(sgi) || (defined(mips) && !defined(BSD))
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357 #define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
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358 #endif
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359
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360
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361 #if !defined (KERNEL_FILE) && defined (sequent)
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362 #define KERNEL_FILE "/dynix"
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363 #endif
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364
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365 #if !defined (KERNEL_FILE) && defined (hpux)
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366 #define KERNEL_FILE "/hp-ux"
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367 #endif
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368
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369 #if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || defined(SVR4) || (defined (ardent) && defined (titan)))
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370 #define KERNEL_FILE "/unix"
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371 #endif
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372
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373
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374 #if !defined (LDAV_SYMBOL) && defined (alliant)
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375 #define LDAV_SYMBOL "_Loadavg"
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376 #endif
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377
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378 #if !defined(LDAV_SYMBOL) && ((defined(hpux) && !defined(hp9000s300)) || defined(_SEQUENT_) || defined(SVR4) || defined(ISC) || defined(sgi) || (defined (ardent) && defined (titan)) || defined (_AIX))
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379 #define LDAV_SYMBOL "avenrun"
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380 #endif
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381
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48
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382 #ifdef HAVE_UNISTD_H
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0
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383 #include <unistd.h>
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48
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384 #endif
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0
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385
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386 #include <stdio.h>
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387
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388 /* LOAD_AVE_TYPE should only get defined if we're going to use the
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389 nlist method. */
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390 #if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL))
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391 #define LOAD_AVE_TYPE double
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392 #endif
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393
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394 #ifdef LOAD_AVE_TYPE
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395
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396 #ifndef NLIST_STRUCT
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397 #include <a.out.h>
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398 #else /* NLIST_STRUCT */
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399 #include <nlist.h>
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400 #endif /* NLIST_STRUCT */
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401
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402 #ifdef SUNOS_5
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403 #include <fcntl.h>
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404 #include <kvm.h>
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405 #endif
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406
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407 #ifndef KERNEL_FILE
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408 #define KERNEL_FILE "/vmunix"
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409 #endif /* KERNEL_FILE */
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410
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411 #ifndef LDAV_SYMBOL
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412 #define LDAV_SYMBOL "_avenrun"
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413 #endif /* LDAV_SYMBOL */
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414
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415 #ifndef LDAV_CVT
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416 #define LDAV_CVT(n) ((double) (n))
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417 #endif /* !LDAV_CVT */
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418
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419 #endif /* LOAD_AVE_TYPE */
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420
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421 #ifdef NeXT
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422 #ifdef HAVE_MACH_MACH_H
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423 #include <mach/mach.h>
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424 #else
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425 #include <mach.h>
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426 #endif
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427 #endif /* NeXT */
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428
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429 #ifdef sgi
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430 #include <sys/sysmp.h>
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431 #endif /* sgi */
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432
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433 #ifdef UMAX
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434 #include <stdio.h>
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435 #include <signal.h>
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436 #include <sys/time.h>
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437 #include <sys/wait.h>
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438 #include <sys/syscall.h>
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439
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440 #ifdef UMAX_43
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441 #include <machine/cpu.h>
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442 #include <inq_stats/statistics.h>
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443 #include <inq_stats/sysstats.h>
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444 #include <inq_stats/cpustats.h>
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445 #include <inq_stats/procstats.h>
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446 #else /* Not UMAX_43. */
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447 #include <sys/sysdefs.h>
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448 #include <sys/statistics.h>
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449 #include <sys/sysstats.h>
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450 #include <sys/cpudefs.h>
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451 #include <sys/cpustats.h>
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452 #include <sys/procstats.h>
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453 #endif /* Not UMAX_43. */
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454 #endif /* UMAX */
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455
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456 #ifdef DGUX
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457 #include <sys/dg_sys_info.h>
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458 #endif
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459
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48
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460 #ifdef XEMACS
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461 #if defined (HAVE_SYS_PSTAT_H)
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0
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462 #include <sys/pstat.h>
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48
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463 #endif /* HAVE_SYS_PSTAT_H (on HPUX) */
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464 #endif /* XEMACS */
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0
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465
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466 #if defined(HAVE_FCNTL_H) || defined(_POSIX_VERSION)
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467 #include <fcntl.h>
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468 #else
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469 #include <sys/file.h>
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470 #endif
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471
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472 /* Avoid static vars inside a function since in HPUX they dump as pure. */
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473
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474 #ifdef NeXT
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475 static processor_set_t default_set;
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476 static int getloadavg_initialized;
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477 #endif /* NeXT */
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478
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479 #ifdef UMAX
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480 static unsigned int cpus = 0;
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481 static unsigned int samples;
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482 #endif /* UMAX */
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483
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484 #ifdef DGUX
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485 static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
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486 #endif /* DGUX */
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487
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488 #ifdef LOAD_AVE_TYPE
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209
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489 /* File descriptor open to /dev/kmem */
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0
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490 static int channel;
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491 /* Nonzero iff channel is valid. */
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492 static int getloadavg_initialized;
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493 /* Offset in kmem to seek to read load average, or 0 means invalid. */
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494 static long offset;
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495
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209
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496 #ifndef sgi
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0
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497 static struct nlist nl[2];
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209
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498 #endif /* not sgi */
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0
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499
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500 #ifdef SUNOS_5
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501 static kvm_t *kd;
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502 #endif /* SUNOS_5 */
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503
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278
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504 #ifndef countof
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505 # define countof(x) (sizeof (x) / sizeof (*(x)))
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506 #endif
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507
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0
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508 #endif /* LOAD_AVE_TYPE */
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509
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510 /* Put the 1 minute, 5 minute and 15 minute load averages
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511 into the first NELEM elements of LOADAVG.
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512 Return the number written (never more than 3, but may be less than NELEM),
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513 or -1 if an error occurred. */
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514
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515 int
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84
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516 getloadavg (double loadavg[], int nelem)
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0
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517 {
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518 int elem = 0; /* Return value. */
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519
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520 #ifdef NO_GET_LOAD_AVG
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521 #define LDAV_DONE
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522 /* Set errno to zero to indicate that there was no particular error;
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523 this function just can't work at all on this system. */
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524 errno = 0;
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278
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525 elem = -2;
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280
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526 #endif /* NO_GET_LOAD_AVG */
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0
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527
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48
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528 #if ! defined (LDAV_DONE) && defined (HAVE_KSTAT_H) && defined (HAVE_LIBKSTAT)
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529 #define LDAV_DONE
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278
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530 /* getloadavg is best implemented using kstat (kernel stats), on
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531 systems (like SunOS5) that support it, since you don't need special
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532 privileges to use it.
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185
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533
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278
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534 Initial implementation courtesy Zlatko Calusic <zcalusic@carnet.hr>.
|
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398
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535 Integrated to XEmacs by Hrvoje Niksic <hniksic@xemacs.org>.
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278
|
536 Additional cleanup by Hrvoje Niksic, based on code published by
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537 Casper Dik <Casper.Dik@Holland.Sun.Com>. */
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538 kstat_ctl_t *kc;
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539 kstat_t *ksp;
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540 static char *avestrings[] = { "avenrun_1min",
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541 "avenrun_5min",
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542 "avenrun_15min" };
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48
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543
|
|
278
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544 if (nelem > countof (avestrings))
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545 nelem = countof (avestrings);
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|
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546
|
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280
|
547 kc = kstat_open ();
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278
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548 if (!kc)
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|
549 return -1;
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|
|
550 ksp = kstat_lookup (kc, "unix", 0, "system_misc");
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551 if (!ksp)
|
|
48
|
552 {
|
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278
|
553 kstat_close (kc);
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|
|
554 return -1;
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|
48
|
555 }
|
|
278
|
556 if (kstat_read (kc, ksp, 0) < 0)
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|
557 {
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|
558 kstat_close (kc);
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|
48
|
559 return -1;
|
|
278
|
560 }
|
|
48
|
561 for (elem = 0; elem < nelem; elem++)
|
|
278
|
562 {
|
|
380
|
563 kstat_named_t *kn =
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|
|
564 (kstat_named_t *) kstat_data_lookup (ksp, avestrings[elem]);
|
|
278
|
565 if (!kn)
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|
566 {
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|
|
567 kstat_close (kc);
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|
|
568 return -1;
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|
|
569 }
|
|
280
|
570 loadavg[elem] = (double)kn->value.ul / FSCALE;
|
|
278
|
571 }
|
|
|
572 kstat_close (kc);
|
|
48
|
573 #endif /* HAVE_KSTAT_H && HAVE_LIBKSTAT */
|
|
82
|
574
|
|
|
575 #if !defined (LDAV_DONE) && defined (HAVE_SYS_PSTAT_H)
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|
|
576 #define LDAV_DONE
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|
|
577 /* This is totally undocumented, and is not guaranteed to work, but
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|
|
578 mayhap it might .... If it does work, it will work only on HP-UX
|
|
|
579 8.0 or later. -- Darryl Okahata <darrylo@sr.hp.com> */
|
|
|
580 #undef LOAD_AVE_TYPE /* Make sure these don't exist. */
|
|
|
581 #undef LOAD_AVE_CVT
|
|
|
582 #undef LDAV_SYMBOL
|
|
|
583 struct pst_dynamic procinfo;
|
|
|
584 union pstun statbuf;
|
|
|
585
|
|
|
586 statbuf.pst_dynamic = &procinfo;
|
|
|
587 if (pstat (PSTAT_DYNAMIC, statbuf, sizeof (struct pst_dynamic), 0, 0) == -1)
|
|
|
588 return (-1);
|
|
|
589 loadavg[elem++] = procinfo.psd_avg_1_min;
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|
|
590 loadavg[elem++] = procinfo.psd_avg_5_min;
|
|
|
591 loadavg[elem++] = procinfo.psd_avg_15_min;
|
|
|
592 #endif /* HPUX */
|
|
|
593
|
|
0
|
594 #if !defined (LDAV_DONE) && defined (__linux__)
|
|
|
595 #define LDAV_DONE
|
|
|
596 #undef LOAD_AVE_TYPE
|
|
|
597
|
|
|
598 #ifndef LINUX_LDAV_FILE
|
|
|
599 #define LINUX_LDAV_FILE "/proc/loadavg"
|
|
|
600 #endif
|
|
|
601
|
|
|
602 char ldavgbuf[40];
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|
|
603 double load_ave[3];
|
|
|
604 int fd, count;
|
|
|
605
|
|
|
606 fd = open (LINUX_LDAV_FILE, O_RDONLY);
|
|
|
607 if (fd == -1)
|
|
|
608 return -1;
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|
|
609 count = read (fd, ldavgbuf, 40);
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|
|
610 (void) close (fd);
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|
|
611 if (count <= 0)
|
|
|
612 return -1;
|
|
|
613
|
|
|
614 count = sscanf (ldavgbuf, "%lf %lf %lf",
|
|
|
615 &load_ave[0], &load_ave[1], &load_ave[2]);
|
|
|
616 if (count < 1)
|
|
|
617 return -1;
|
|
|
618
|
|
|
619 for (elem = 0; elem < nelem && elem < count; elem++)
|
|
|
620 loadavg[elem] = load_ave[elem];
|
|
|
621 #endif /* __linux__ */
|
|
|
622
|
|
286
|
623 #if !defined (LDAV_DONE) && defined (__NetBSD__) || defined (__OpenBSD__)
|
|
0
|
624 #define LDAV_DONE
|
|
|
625 #undef LOAD_AVE_TYPE
|
|
|
626
|
|
|
627 #ifndef NETBSD_LDAV_FILE
|
|
|
628 #define NETBSD_LDAV_FILE "/kern/loadavg"
|
|
|
629 #endif
|
|
|
630
|
|
|
631 unsigned long int load_ave[3], scale;
|
|
|
632 int count;
|
|
|
633 FILE *fp;
|
|
|
634
|
|
|
635 fp = fopen (NETBSD_LDAV_FILE, "r");
|
|
|
636 if (fp == NULL)
|
|
|
637 return -1;
|
|
|
638 count = fscanf (fp, "%lu %lu %lu %lu\n",
|
|
|
639 &load_ave[0], &load_ave[1], &load_ave[2],
|
|
|
640 &scale);
|
|
|
641 (void) fclose (fp);
|
|
|
642 if (count != 4)
|
|
|
643 return -1;
|
|
|
644
|
|
|
645 for (elem = 0; elem < nelem; elem++)
|
|
|
646 loadavg[elem] = (double) load_ave[elem] / (double) scale;
|
|
286
|
647 #endif /* __NetBSD__ or __OpenBSD__ */
|
|
0
|
648
|
|
|
649 #if !defined (LDAV_DONE) && defined (NeXT)
|
|
|
650 #define LDAV_DONE
|
|
|
651 /* The NeXT code was adapted from iscreen 3.2. */
|
|
|
652
|
|
|
653 host_t host;
|
|
|
654 struct processor_set_basic_info info;
|
|
|
655 unsigned info_count;
|
|
|
656
|
|
48
|
657 /* We only know how to get the 1-minute average for this system,
|
|
|
658 so even if the caller asks for more than 1, we only return 1. */
|
|
0
|
659
|
|
|
660 if (!getloadavg_initialized)
|
|
|
661 {
|
|
|
662 if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
|
|
|
663 getloadavg_initialized = 1;
|
|
|
664 }
|
|
|
665
|
|
|
666 if (getloadavg_initialized)
|
|
|
667 {
|
|
|
668 info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
|
|
|
669 if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
|
|
|
670 (processor_set_info_t) &info, &info_count)
|
|
|
671 != KERN_SUCCESS)
|
|
|
672 getloadavg_initialized = 0;
|
|
|
673 else
|
|
|
674 {
|
|
|
675 if (nelem > 0)
|
|
|
676 loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
|
|
|
677 }
|
|
|
678 }
|
|
|
679
|
|
|
680 if (!getloadavg_initialized)
|
|
|
681 return -1;
|
|
|
682 #endif /* NeXT */
|
|
|
683
|
|
|
684 #if !defined (LDAV_DONE) && defined (UMAX)
|
|
|
685 #define LDAV_DONE
|
|
|
686 /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
|
|
|
687 have a /dev/kmem. Information about the workings of the running kernel
|
|
|
688 can be gathered with inq_stats system calls.
|
|
|
689 We only know how to get the 1-minute average for this system. */
|
|
|
690
|
|
|
691 struct proc_summary proc_sum_data;
|
|
|
692 struct stat_descr proc_info;
|
|
|
693 double load;
|
|
203
|
694 REGISTER unsigned int i, j;
|
|
0
|
695
|
|
|
696 if (cpus == 0)
|
|
|
697 {
|
|
203
|
698 REGISTER unsigned int c, i;
|
|
0
|
699 struct cpu_config conf;
|
|
|
700 struct stat_descr desc;
|
|
|
701
|
|
|
702 desc.sd_next = 0;
|
|
|
703 desc.sd_subsys = SUBSYS_CPU;
|
|
|
704 desc.sd_type = CPUTYPE_CONFIG;
|
|
|
705 desc.sd_addr = (char *) &conf;
|
|
|
706 desc.sd_size = sizeof conf;
|
|
|
707
|
|
|
708 if (inq_stats (1, &desc))
|
|
|
709 return -1;
|
|
|
710
|
|
|
711 c = 0;
|
|
|
712 for (i = 0; i < conf.config_maxclass; ++i)
|
|
|
713 {
|
|
|
714 struct class_stats stats;
|
|
282
|
715 memset ((char *) &stats, 0, sizeof stats);
|
|
0
|
716
|
|
|
717 desc.sd_type = CPUTYPE_CLASS;
|
|
|
718 desc.sd_objid = i;
|
|
|
719 desc.sd_addr = (char *) &stats;
|
|
|
720 desc.sd_size = sizeof stats;
|
|
|
721
|
|
|
722 if (inq_stats (1, &desc))
|
|
|
723 return -1;
|
|
|
724
|
|
|
725 c += stats.class_numcpus;
|
|
|
726 }
|
|
|
727 cpus = c;
|
|
|
728 samples = cpus < 2 ? 3 : (2 * cpus / 3);
|
|
|
729 }
|
|
|
730
|
|
|
731 proc_info.sd_next = 0;
|
|
|
732 proc_info.sd_subsys = SUBSYS_PROC;
|
|
|
733 proc_info.sd_type = PROCTYPE_SUMMARY;
|
|
|
734 proc_info.sd_addr = (char *) &proc_sum_data;
|
|
|
735 proc_info.sd_size = sizeof (struct proc_summary);
|
|
|
736 proc_info.sd_sizeused = 0;
|
|
|
737
|
|
|
738 if (inq_stats (1, &proc_info) != 0)
|
|
|
739 return -1;
|
|
|
740
|
|
|
741 load = proc_sum_data.ps_nrunnable;
|
|
|
742 j = 0;
|
|
|
743 for (i = samples - 1; i > 0; --i)
|
|
|
744 {
|
|
|
745 load += proc_sum_data.ps_nrun[j];
|
|
|
746 if (j++ == PS_NRUNSIZE)
|
|
|
747 j = 0;
|
|
|
748 }
|
|
|
749
|
|
|
750 if (nelem > 0)
|
|
|
751 loadavg[elem++] = load / samples / cpus;
|
|
|
752 #endif /* UMAX */
|
|
|
753
|
|
|
754 #if !defined (LDAV_DONE) && defined (DGUX)
|
|
|
755 #define LDAV_DONE
|
|
|
756 /* This call can return -1 for an error, but with good args
|
|
|
757 it's not supposed to fail. The first argument is for no
|
|
|
758 apparent reason of type `long int *'. */
|
|
|
759 dg_sys_info ((long int *) &load_info,
|
|
|
760 DG_SYS_INFO_LOAD_INFO_TYPE,
|
|
|
761 DG_SYS_INFO_LOAD_VERSION_0);
|
|
|
762
|
|
|
763 if (nelem > 0)
|
|
|
764 loadavg[elem++] = load_info.one_minute;
|
|
|
765 if (nelem > 1)
|
|
|
766 loadavg[elem++] = load_info.five_minute;
|
|
|
767 if (nelem > 2)
|
|
|
768 loadavg[elem++] = load_info.fifteen_minute;
|
|
|
769 #endif /* DGUX */
|
|
|
770
|
|
|
771 #if !defined (LDAV_DONE) && defined (OSF_MIPS)
|
|
|
772 #define LDAV_DONE
|
|
|
773
|
|
|
774 struct tbl_loadavg load_ave;
|
|
|
775 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
|
|
48
|
776 loadavg[elem++]
|
|
|
777 = (load_ave.tl_lscale == 0
|
|
|
778 ? load_ave.tl_avenrun.d[0]
|
|
|
779 : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
|
|
0
|
780 #endif /* OSF_MIPS */
|
|
|
781
|
|
|
782 #if !defined (LDAV_DONE) && (defined (MSDOS) || defined (WIN32))
|
|
|
783 #define LDAV_DONE
|
|
|
784
|
|
|
785 /* A faithful emulation is going to have to be saved for a rainy day. */
|
|
|
786 for ( ; elem < nelem; elem++)
|
|
|
787 {
|
|
|
788 loadavg[elem] = 0.0;
|
|
|
789 }
|
|
|
790 #endif /* MSDOS */
|
|
|
791
|
|
|
792 #if !defined (LDAV_DONE) && defined (OSF_ALPHA)
|
|
|
793 #define LDAV_DONE
|
|
|
794
|
|
|
795 struct tbl_loadavg load_ave;
|
|
|
796 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
|
|
|
797 for (elem = 0; elem < nelem; elem++)
|
|
|
798 loadavg[elem]
|
|
|
799 = (load_ave.tl_lscale == 0
|
|
|
800 ? load_ave.tl_avenrun.d[elem]
|
|
|
801 : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
|
|
|
802 #endif /* OSF_ALPHA */
|
|
|
803
|
|
209
|
804 #if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE)
|
|
0
|
805
|
|
|
806 /* UNIX-specific code -- read the average from /dev/kmem. */
|
|
|
807
|
|
|
808 #define LDAV_PRIVILEGED /* This code requires special installation. */
|
|
|
809
|
|
|
810 LOAD_AVE_TYPE load_ave[3];
|
|
|
811
|
|
|
812 /* Get the address of LDAV_SYMBOL. */
|
|
|
813 if (offset == 0)
|
|
|
814 {
|
|
|
815 #ifndef sgi
|
|
|
816 #ifndef NLIST_STRUCT
|
|
|
817 strcpy (nl[0].n_name, LDAV_SYMBOL);
|
|
|
818 strcpy (nl[1].n_name, "");
|
|
|
819 #else /* NLIST_STRUCT */
|
|
|
820 #ifdef NLIST_NAME_UNION
|
|
|
821 nl[0].n_un.n_name = LDAV_SYMBOL;
|
|
|
822 nl[1].n_un.n_name = 0;
|
|
|
823 #else /* not NLIST_NAME_UNION */
|
|
84
|
824 nl[0].n_name = (char *) LDAV_SYMBOL;
|
|
0
|
825 nl[1].n_name = 0;
|
|
|
826 #endif /* not NLIST_NAME_UNION */
|
|
|
827 #endif /* NLIST_STRUCT */
|
|
|
828
|
|
|
829 #ifndef SUNOS_5
|
|
|
830 if (
|
|
|
831 #if !(defined (_AIX) && !defined (ps2))
|
|
|
832 nlist (KERNEL_FILE, nl)
|
|
|
833 #else /* _AIX */
|
|
|
834 knlist (nl, 1, sizeof (nl[0]))
|
|
|
835 #endif
|
|
|
836 >= 0)
|
|
|
837 /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
|
|
|
838 {
|
|
|
839 #ifdef FIXUP_KERNEL_SYMBOL_ADDR
|
|
|
840 FIXUP_KERNEL_SYMBOL_ADDR (nl);
|
|
|
841 #endif
|
|
|
842 offset = nl[0].n_value;
|
|
|
843 }
|
|
|
844 #endif /* !SUNOS_5 */
|
|
|
845 #else /* sgi */
|
|
|
846 int ldav_off;
|
|
|
847
|
|
|
848 ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
|
|
|
849 if (ldav_off != -1)
|
|
|
850 offset = (long) ldav_off & 0x7fffffff;
|
|
|
851 #endif /* sgi */
|
|
|
852 }
|
|
|
853
|
|
|
854 /* Make sure we have /dev/kmem open. */
|
|
|
855 if (!getloadavg_initialized)
|
|
|
856 {
|
|
|
857 #ifndef SUNOS_5
|
|
|
858 channel = open ("/dev/kmem", 0);
|
|
|
859 if (channel >= 0)
|
|
|
860 {
|
|
|
861 /* Set the channel to close on exec, so it does not
|
|
|
862 litter any child's descriptor table. */
|
|
|
863 #ifdef FD_SETFD
|
|
|
864 #ifndef FD_CLOEXEC
|
|
|
865 #define FD_CLOEXEC 1
|
|
|
866 #endif
|
|
|
867 (void) fcntl (channel, F_SETFD, FD_CLOEXEC);
|
|
|
868 #endif
|
|
|
869 getloadavg_initialized = 1;
|
|
|
870 }
|
|
|
871 #else /* SUNOS_5 */
|
|
|
872 /* We pass 0 for the kernel, corefile, and swapfile names
|
|
|
873 to use the currently running kernel. */
|
|
|
874 kd = kvm_open (0, 0, 0, O_RDONLY, 0);
|
|
|
875 if (kd != 0)
|
|
|
876 {
|
|
|
877 /* nlist the currently running kernel. */
|
|
|
878 kvm_nlist (kd, nl);
|
|
|
879 offset = nl[0].n_value;
|
|
|
880 getloadavg_initialized = 1;
|
|
|
881 }
|
|
|
882 #endif /* SUNOS_5 */
|
|
|
883 }
|
|
|
884
|
|
|
885 /* If we can, get the load average values. */
|
|
|
886 if (offset && getloadavg_initialized)
|
|
|
887 {
|
|
|
888 /* Try to read the load. */
|
|
|
889 #ifndef SUNOS_5
|
|
|
890 if (lseek (channel, offset, 0) == -1L
|
|
|
891 || read (channel, (char *) load_ave, sizeof (load_ave))
|
|
|
892 != sizeof (load_ave))
|
|
|
893 {
|
|
|
894 close (channel);
|
|
|
895 getloadavg_initialized = 0;
|
|
|
896 }
|
|
|
897 #else /* SUNOS_5 */
|
|
|
898 if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
|
|
|
899 != sizeof (load_ave))
|
|
|
900 {
|
|
|
901 kvm_close (kd);
|
|
|
902 getloadavg_initialized = 0;
|
|
|
903 }
|
|
|
904 #endif /* SUNOS_5 */
|
|
|
905 }
|
|
|
906
|
|
|
907 if (offset == 0 || !getloadavg_initialized)
|
|
|
908 return -1;
|
|
|
909
|
|
|
910 if (nelem > 0)
|
|
|
911 loadavg[elem++] = LDAV_CVT (load_ave[0]);
|
|
|
912 if (nelem > 1)
|
|
|
913 loadavg[elem++] = LDAV_CVT (load_ave[1]);
|
|
|
914 if (nelem > 2)
|
|
|
915 loadavg[elem++] = LDAV_CVT (load_ave[2]);
|
|
|
916
|
|
|
917 #define LDAV_DONE
|
|
|
918 #endif /* !LDAV_DONE && LOAD_AVE_TYPE */
|
|
|
919
|
|
|
920 return elem;
|
|
|
921 }
|
|
|
922
|
|
|
923 #endif /* ! HAVE_GETLOADAVG */
|
|
|
924
|
|
|
925 #ifdef TEST
|
|
|
926 void
|
|
84
|
927 main (int argc, char **argv)
|
|
0
|
928 {
|
|
|
929 int naptime = 0;
|
|
|
930
|
|
|
931 if (argc > 1)
|
|
|
932 naptime = atoi (argv[1]);
|
|
|
933
|
|
|
934 while (1)
|
|
|
935 {
|
|
|
936 double avg[3];
|
|
|
937 int loads;
|
|
|
938
|
|
|
939 errno = 0; /* Don't be misled if it doesn't set errno. */
|
|
|
940 loads = getloadavg (avg, 3);
|
|
|
941 if (loads == -1)
|
|
|
942 {
|
|
|
943 perror ("Error getting load average");
|
|
|
944 exit (1);
|
|
|
945 }
|
|
|
946 if (loads > 0)
|
|
|
947 printf ("1-minute: %f ", avg[0]);
|
|
|
948 if (loads > 1)
|
|
|
949 printf ("5-minute: %f ", avg[1]);
|
|
|
950 if (loads > 2)
|
|
|
951 printf ("15-minute: %f ", avg[2]);
|
|
|
952 if (loads > 0)
|
|
|
953 putchar ('\n');
|
|
|
954
|
|
|
955 if (naptime == 0)
|
|
|
956 break;
|
|
|
957 sleep (naptime);
|
|
|
958 }
|
|
|
959
|
|
|
960 exit (0);
|
|
|
961 }
|
|
|
962 #endif /* TEST */
|
|
231
|
963
|
|
|
964 #else
|
|
|
965
|
|
|
966 /* Emulate getloadavg. */
|
|
|
967 int
|
|
|
968 getloadavg (double loadavg[], int nelem)
|
|
|
969 {
|
|
|
970 int i;
|
|
|
971
|
|
|
972 /* A faithful emulation is going to have to be saved for a rainy day. */
|
|
|
973 for (i = 0; i < nelem; i++)
|
|
|
974 {
|
|
|
975 loadavg[i] = 0.0;
|
|
|
976 }
|
|
|
977 return i;
|
|
|
978 }
|
|
|
979
|
|
|
980 #endif /*__GNUWIN32__*/
|
|
398
|
981 #endif /* WINDOWSNT */
|
