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428
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1 /* Get the system load averages.
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2 Copyright (C) 1985, 86, 87, 88, 89, 91, 92, 93, 1994, 1995
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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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6
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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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11
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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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16
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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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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 NeXT
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48 sgi
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49 sequent Sequent Dynix 3.x.x (BSD)
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50 _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
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51 sony_news NEWS-OS (works at least for 4.1C)
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52 UMAX
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53 UMAX4_3
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442
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54 WIN32_NATIVE No-op for Windows9x/NT.
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55 CYGWIN No-op for Cygwin.
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428
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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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59 __OpenBSD__ OpenBSD: ditto.
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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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72 #include "lisp.h"
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73 #include "sysfile.h" /* for encapsulated open, close, read, write */
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74
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75 #ifndef HAVE_GETLOADAVG
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76
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77 /* The existing Emacs configuration files define a macro called
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78 LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
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79 returns the load average multiplied by 100. What we actually want
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80 is a macro called LDAV_CVT, which returns the load average as an
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81 unmultiplied double.
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82
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83 For backwards compatibility, we'll define LDAV_CVT in terms of
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84 LOAD_AVE_CVT, but future machine config files should just define
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85 LDAV_CVT directly. */
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86
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87 #if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT)
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88 #define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
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89 #endif
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90
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91 #if defined (HAVE_KSTAT_H)
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92 #include <kstat.h>
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93 #endif /* HAVE_KSTAT_H */
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94
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95 #if !defined (BSD) && defined (ultrix)
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96 /* Ultrix behaves like BSD on Vaxen. */
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97 #define BSD
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98 #endif
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99
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100 #ifdef NeXT
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101 /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
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102 conflicts with the definition understood in this file, that this
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103 really is BSD. */
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104 #undef BSD
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105
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106 /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being
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107 defined to mean that the nlist method should be used, which is not true. */
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108 #undef FSCALE
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109 #endif
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110
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111 /* Set values that are different from the defaults, which are
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112 set a little farther down with #ifndef. */
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113
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114
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115 /* Some shorthands. */
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116
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117 #if defined (HPUX) && !defined (hpux)
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118 #define hpux
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119 #endif
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120
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121 #if defined(hp300) && !defined(hpux)
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122 #define MORE_BSD
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123 #endif
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124
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125 #if defined(ultrix) && defined(mips)
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126 #define decstation
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127 #endif
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128
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129 #if (defined(sun) && defined(SVR4)) || defined (SOLARIS2)
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130 #define SUNOS_5
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131 #endif
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132
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133 #if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
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134 #define OSF_ALPHA
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135 #include <netdb.h>
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136 #include <netinet/in.h> /* Needed for Digital UNIX V3 */
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137 #include <net/proto_net.h>
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138 #include <sys/table.h>
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139 #endif
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140
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141 #if defined (__osf__) && (defined (mips) || defined (__mips__))
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142 #define OSF_MIPS
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143 #include <sys/table.h>
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144 #endif
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145
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146 /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
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147 default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
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148 that with a couple of other things and we'll have a unique match. */
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149 #if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
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150 #define tek4300 /* Define by emacs, but not by other users. */
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151 #endif
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152
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153
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154 /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
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155 #ifndef LOAD_AVE_TYPE
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156
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157 #ifdef MORE_BSD
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158 #define LOAD_AVE_TYPE long
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159 #endif
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160
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161 #ifdef sun
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162 #define LOAD_AVE_TYPE long
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163 #endif
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164
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165 #ifdef decstation
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166 #define LOAD_AVE_TYPE long
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167 #endif
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168
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169 #ifdef _SEQUENT_
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170 #define LOAD_AVE_TYPE long
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171 #endif
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172
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173 #ifdef sgi
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174 #define LOAD_AVE_TYPE long
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175 #endif
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176
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177 #ifdef SVR4
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178 #define LOAD_AVE_TYPE long
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179 #endif
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180
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181 #ifdef sony_news
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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 sequent
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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 OSF_ALPHA
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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 #if defined (ardent) && defined (titan)
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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 tek4300
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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 #if defined(alliant) && defined(i860) /* Alliant FX/2800 */
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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 _AIX
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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 convex
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210 #define LOAD_AVE_TYPE double
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211 #ifndef LDAV_CVT
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212 #define LDAV_CVT(n) (n)
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213 #endif
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214 #endif
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215
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216 #endif /* No LOAD_AVE_TYPE. */
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217
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218 #ifdef OSF_ALPHA
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219 /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
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220 according to ghazi@noc.rutgers.edu. */
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221 #undef FSCALE
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222 #define FSCALE 1024.0
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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 /* <sys/param.h> defines an incorrect value for FSCALE on an
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227 Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
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228 #undef FSCALE
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229 #define FSCALE 100.0
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230 #endif
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231
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232
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233 #ifndef FSCALE
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234
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235 /* SunOS and some others define FSCALE in sys/param.h. */
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236
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237 #ifdef MORE_BSD
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238 #define FSCALE 2048.0
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239 #endif
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240
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241 #if defined(MIPS) || defined(SVR4) || defined(decstation)
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242 #define FSCALE 256
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243 #endif
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244
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245 #if defined (sgi) || defined (sequent)
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246 /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
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247 above under #ifdef MIPS. But we want the sgi value. */
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248 #undef FSCALE
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249 #define FSCALE 1000.0
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250 #endif
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251
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252 #if defined (ardent) && defined (titan)
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253 #define FSCALE 65536.0
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254 #endif
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255
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256 #ifdef tek4300
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257 #define FSCALE 100.0
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258 #endif
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259
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260 #ifdef _AIX
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261 #define FSCALE 65536.0
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262 #endif
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263
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264 #endif /* Not FSCALE. */
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265
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266 #if !defined (LDAV_CVT) && defined (FSCALE)
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267 #define LDAV_CVT(n) (((double) (n)) / FSCALE)
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268 #endif
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269
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270 /* VAX C can't handle multi-line #ifs, or lines longer that 256 characters. */
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271 #ifndef NLIST_STRUCT
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272
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273 #ifdef MORE_BSD
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274 #define NLIST_STRUCT
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275 #endif
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276
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277 #ifdef sun
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278 #define NLIST_STRUCT
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279 #endif
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280
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281 #ifdef decstation
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282 #define NLIST_STRUCT
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283 #endif
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284
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285 #ifdef hpux
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286 #define NLIST_STRUCT
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287 #endif
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288
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289 #if defined (_SEQUENT_) || defined (sequent)
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290 #define NLIST_STRUCT
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291 #endif
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292
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293 #ifdef sgi
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294 #define NLIST_STRUCT
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295 #endif
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296
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297 #ifdef SVR4
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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 sony_news
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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 OSF_ALPHA
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306 #define NLIST_STRUCT
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307 #endif
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308
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309 #if defined (ardent) && defined (titan)
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310 #define NLIST_STRUCT
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311 #endif
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312
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313 #ifdef tek4300
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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 butterfly
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318 #define NLIST_STRUCT
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319 #endif
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320
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321 #if defined(alliant) && defined(i860) /* Alliant FX/2800 */
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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 _AIX
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326 #define NLIST_STRUCT
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327 #endif
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328
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329 #endif /* defined (NLIST_STRUCT) */
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330
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331
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332 #if defined(sgi) || (defined(mips) && !defined(BSD))
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333 #define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
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334 #endif
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335
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336
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337 #if !defined (KERNEL_FILE) && defined (sequent)
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338 #define KERNEL_FILE "/dynix"
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339 #endif
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340
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341 #if !defined (KERNEL_FILE) && defined (hpux)
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342 #define KERNEL_FILE "/hp-ux"
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343 #endif
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344
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345 #if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || defined(SVR4) || (defined (ardent) && defined (titan)))
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346 #define KERNEL_FILE "/unix"
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347 #endif
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348
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349
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350 #if !defined (LDAV_SYMBOL) && defined (alliant)
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351 #define LDAV_SYMBOL "_Loadavg"
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|
352 #endif
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353
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354 #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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355 #define LDAV_SYMBOL "avenrun"
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356 #endif
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357
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358 #ifdef HAVE_UNISTD_H
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|
359 #include <unistd.h>
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|
360 #endif
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361
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362 #include <stdio.h>
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363
|
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364 /* LOAD_AVE_TYPE should only get defined if we're going to use the
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365 nlist method. */
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366 #if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL))
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367 #define LOAD_AVE_TYPE double
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|
368 #endif
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369
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|
370 #ifdef LOAD_AVE_TYPE
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371
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372 #ifndef NLIST_STRUCT
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373 #include <a.out.h>
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374 #else /* NLIST_STRUCT */
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375 #include <nlist.h>
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|
376 #endif /* NLIST_STRUCT */
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377
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|
378 #ifdef SUNOS_5
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|
379 #include <fcntl.h>
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|
380 #include <kvm.h>
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|
381 #endif
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382
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|
|
383 #ifndef KERNEL_FILE
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|
384 #define KERNEL_FILE "/vmunix"
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|
385 #endif /* KERNEL_FILE */
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|
386
|
|
|
387 #ifndef LDAV_SYMBOL
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|
|
388 #define LDAV_SYMBOL "_avenrun"
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|
|
389 #endif /* LDAV_SYMBOL */
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|
|
390
|
|
|
391 #ifndef LDAV_CVT
|
|
|
392 #define LDAV_CVT(n) ((double) (n))
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|
|
393 #endif /* !LDAV_CVT */
|
|
|
394
|
|
|
395 #endif /* LOAD_AVE_TYPE */
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|
|
396
|
|
|
397 #ifdef NeXT
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|
|
398 #ifdef HAVE_MACH_MACH_H
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|
399 #include <mach/mach.h>
|
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|
400 #else
|
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|
401 #include <mach.h>
|
|
|
402 #endif
|
|
|
403 #endif /* NeXT */
|
|
|
404
|
|
|
405 #ifdef sgi
|
|
|
406 #include <sys/sysmp.h>
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|
|
407 #endif /* sgi */
|
|
|
408
|
|
|
409 #ifdef UMAX
|
|
|
410 #include <stdio.h>
|
|
978
|
411 #include "syssignal.h"
|
|
428
|
412 #include <sys/time.h>
|
|
|
413 #include <sys/wait.h>
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|
|
414 #include <sys/syscall.h>
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|
|
415
|
|
|
416 #ifdef UMAX_43
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|
|
417 #include <machine/cpu.h>
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|
|
418 #include <inq_stats/statistics.h>
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|
|
419 #include <inq_stats/sysstats.h>
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|
|
420 #include <inq_stats/cpustats.h>
|
|
|
421 #include <inq_stats/procstats.h>
|
|
|
422 #else /* Not UMAX_43. */
|
|
|
423 #include <sys/sysdefs.h>
|
|
|
424 #include <sys/statistics.h>
|
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425 #include <sys/sysstats.h>
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426 #include <sys/cpudefs.h>
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427 #include <sys/cpustats.h>
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428 #include <sys/procstats.h>
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429 #endif /* Not UMAX_43. */
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430 #endif /* UMAX */
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431
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432 #ifdef DGUX
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433 #include <sys/dg_sys_info.h>
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434 #endif
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435
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436 #if defined (HAVE_SYS_PSTAT_H)
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437 #include <sys/pstat.h>
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438 #endif /* HAVE_SYS_PSTAT_H (on HPUX) */
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439
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440
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441 /* Avoid static vars inside a function since in HPUX they dump as pure. */
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442
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443 #ifdef NeXT
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444 static processor_set_t default_set;
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445 static int getloadavg_initialized;
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446 #endif /* NeXT */
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447
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448 #ifdef UMAX
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449 static unsigned int cpus = 0;
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450 static unsigned int samples;
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451 #endif /* UMAX */
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452
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453 #ifdef DGUX
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454 static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
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455 #endif /* DGUX */
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456
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457 #ifdef LOAD_AVE_TYPE
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458 /* File descriptor open to /dev/kmem */
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459 static int channel;
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460 /* Nonzero iff channel is valid. */
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461 static int getloadavg_initialized;
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462 /* Offset in kmem to seek to read load average, or 0 means invalid. */
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463 static long offset;
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464
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465 #ifndef sgi
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466 static struct nlist nl[2];
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467 #endif /* not sgi */
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468
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469 #ifdef SUNOS_5
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470 static kvm_t *kd;
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471 #endif /* SUNOS_5 */
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472
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473 #ifndef countof
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474 # define countof(x) (sizeof (x) / sizeof (*(x)))
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475 #endif
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476
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477 #endif /* LOAD_AVE_TYPE */
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478
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479 /* Put the 1 minute, 5 minute and 15 minute load averages
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480 into the first NELEM elements of LOADAVG.
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481 Return the number written (never more than 3, but may be less than NELEM),
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482 or -1 if an error occurred. */
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483
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442
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484 int getloadavg (double loadavg[], int nelem);
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485
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428
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486 int
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487 getloadavg (double loadavg[], int nelem)
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488 {
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489 int elem = 0; /* Return value. */
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490
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491 #ifdef NO_GET_LOAD_AVG
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492 #define LDAV_DONE
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493 /* Set errno to zero to indicate that there was no particular error;
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494 this function just can't work at all on this system. */
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495 errno = 0;
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496 elem = -2;
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497 #endif /* NO_GET_LOAD_AVG */
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498
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499 #if ! defined (LDAV_DONE) && defined (HAVE_KSTAT_H) && defined (HAVE_LIBKSTAT)
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500 #define LDAV_DONE
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501 /* getloadavg is best implemented using kstat (kernel stats), on
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502 systems (like SunOS5) that support it, since you don't need special
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503 privileges to use it.
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504
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505 Initial implementation courtesy Zlatko Calusic <zcalusic@carnet.hr>.
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506 Integrated to XEmacs by Hrvoje Niksic <hniksic@xemacs.org>.
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507 Additional cleanup by Hrvoje Niksic, based on code published by
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508 Casper Dik <Casper.Dik@Holland.Sun.Com>. */
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509 kstat_ctl_t *kc;
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510 kstat_t *ksp;
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511 static char *avestrings[] = { "avenrun_1min",
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512 "avenrun_5min",
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513 "avenrun_15min" };
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514
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515 if (nelem > countof (avestrings))
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516 nelem = countof (avestrings);
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517
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518 kc = kstat_open ();
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519 if (!kc)
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520 return -1;
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521 ksp = kstat_lookup (kc, "unix", 0, "system_misc");
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522 if (!ksp)
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523 {
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524 kstat_close (kc);
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525 return -1;
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526 }
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527 if (kstat_read (kc, ksp, 0) < 0)
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528 {
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529 kstat_close (kc);
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530 return -1;
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531 }
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532 for (elem = 0; elem < nelem; elem++)
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533 {
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534 kstat_named_t *kn =
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535 (kstat_named_t *) kstat_data_lookup (ksp, avestrings[elem]);
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536 if (!kn)
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537 {
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538 kstat_close (kc);
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539 return -1;
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540 }
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541 loadavg[elem] = (double)kn->value.ul / FSCALE;
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542 }
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543 kstat_close (kc);
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544 #endif /* HAVE_KSTAT_H && HAVE_LIBKSTAT */
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545
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546 #if !defined (LDAV_DONE) && defined (HAVE_SYS_PSTAT_H)
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547 #define LDAV_DONE
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548 /* This is totally undocumented, and is not guaranteed to work, but
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549 mayhap it might .... If it does work, it will work only on HP-UX
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550 8.0 or later. -- Darryl Okahata <darrylo@sr.hp.com> */
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551 #undef LOAD_AVE_TYPE /* Make sure these don't exist. */
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552 #undef LOAD_AVE_CVT
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553 #undef LDAV_SYMBOL
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554 struct pst_dynamic procinfo;
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555 union pstun statbuf;
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556
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557 statbuf.pst_dynamic = &procinfo;
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558 if (pstat (PSTAT_DYNAMIC, statbuf, sizeof (struct pst_dynamic), 0, 0) == -1)
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559 return (-1);
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560 loadavg[elem++] = procinfo.psd_avg_1_min;
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561 loadavg[elem++] = procinfo.psd_avg_5_min;
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562 loadavg[elem++] = procinfo.psd_avg_15_min;
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563 #endif /* HPUX */
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564
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565 #if !defined (LDAV_DONE) && defined (__linux__)
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566 #define LDAV_DONE
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567 #undef LOAD_AVE_TYPE
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568
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569 #ifndef LINUX_LDAV_FILE
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570 #define LINUX_LDAV_FILE "/proc/loadavg"
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571 #endif
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572
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573 char ldavgbuf[40];
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574 double load_ave[3];
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575 int fd, count;
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576
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771
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577 fd = retry_open (LINUX_LDAV_FILE, O_RDONLY);
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428
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578 if (fd == -1)
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579 return -1;
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771
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580 count = retry_read (fd, ldavgbuf, 40);
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581 (void) retry_close (fd);
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428
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582 if (count <= 0)
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583 return -1;
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584
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585 count = sscanf (ldavgbuf, "%lf %lf %lf",
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586 &load_ave[0], &load_ave[1], &load_ave[2]);
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587 if (count < 1)
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588 return -1;
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589
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590 for (elem = 0; elem < nelem && elem < count; elem++)
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591 loadavg[elem] = load_ave[elem];
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592 #endif /* __linux__ */
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593
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594 #if !defined (LDAV_DONE) && defined (__NetBSD__) || defined (__OpenBSD__)
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595 #define LDAV_DONE
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596 #undef LOAD_AVE_TYPE
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597
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598 #ifndef NETBSD_LDAV_FILE
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599 #define NETBSD_LDAV_FILE "/kern/loadavg"
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600 #endif
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601
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602 unsigned long int load_ave[3], scale;
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603 int count;
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604 FILE *fp;
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605
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771
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606 fp = retry_fopen (NETBSD_LDAV_FILE, "r");
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428
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607 if (fp == NULL)
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608 return -1;
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609 count = fscanf (fp, "%lu %lu %lu %lu\n",
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610 &load_ave[0], &load_ave[1], &load_ave[2],
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611 &scale);
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771
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612 (void) retry_fclose (fp);
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428
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613 if (count != 4)
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614 return -1;
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615
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616 for (elem = 0; elem < nelem; elem++)
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617 loadavg[elem] = (double) load_ave[elem] / (double) scale;
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618 #endif /* __NetBSD__ or __OpenBSD__ */
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619
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620 #if !defined (LDAV_DONE) && defined (NeXT)
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621 #define LDAV_DONE
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622 /* The NeXT code was adapted from iscreen 3.2. */
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|
623
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624 host_t host;
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625 struct processor_set_basic_info info;
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626 unsigned info_count;
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627
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628 /* We only know how to get the 1-minute average for this system,
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629 so even if the caller asks for more than 1, we only return 1. */
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630
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631 if (!getloadavg_initialized)
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632 {
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633 if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
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634 getloadavg_initialized = 1;
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635 }
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636
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637 if (getloadavg_initialized)
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638 {
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|
639 info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
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640 if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
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641 (processor_set_info_t) &info, &info_count)
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|
642 != KERN_SUCCESS)
|
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|
643 getloadavg_initialized = 0;
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644 else
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645 {
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646 if (nelem > 0)
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647 loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
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|
|
648 }
|
|
|
649 }
|
|
|
650
|
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|
651 if (!getloadavg_initialized)
|
|
|
652 return -1;
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|
|
653 #endif /* NeXT */
|
|
|
654
|
|
|
655 #if !defined (LDAV_DONE) && defined (UMAX)
|
|
|
656 #define LDAV_DONE
|
|
|
657 /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
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|
658 have a /dev/kmem. Information about the workings of the running kernel
|
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|
659 can be gathered with inq_stats system calls.
|
|
|
660 We only know how to get the 1-minute average for this system. */
|
|
|
661
|
|
|
662 struct proc_summary proc_sum_data;
|
|
|
663 struct stat_descr proc_info;
|
|
|
664 double load;
|
|
|
665 REGISTER unsigned int i, j;
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|
|
666
|
|
|
667 if (cpus == 0)
|
|
|
668 {
|
|
|
669 REGISTER unsigned int c, i;
|
|
|
670 struct cpu_config conf;
|
|
|
671 struct stat_descr desc;
|
|
|
672
|
|
|
673 desc.sd_next = 0;
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|
|
674 desc.sd_subsys = SUBSYS_CPU;
|
|
|
675 desc.sd_type = CPUTYPE_CONFIG;
|
|
|
676 desc.sd_addr = (char *) &conf;
|
|
647
|
677 desc.sd_size = sizeof (conf);
|
|
428
|
678
|
|
|
679 if (inq_stats (1, &desc))
|
|
|
680 return -1;
|
|
|
681
|
|
|
682 c = 0;
|
|
|
683 for (i = 0; i < conf.config_maxclass; ++i)
|
|
|
684 {
|
|
|
685 struct class_stats stats;
|
|
647
|
686 memset ((char *) &stats, 0, sizeof (stats));
|
|
428
|
687
|
|
|
688 desc.sd_type = CPUTYPE_CLASS;
|
|
|
689 desc.sd_objid = i;
|
|
|
690 desc.sd_addr = (char *) &stats;
|
|
647
|
691 desc.sd_size = sizeof (stats);
|
|
428
|
692
|
|
|
693 if (inq_stats (1, &desc))
|
|
|
694 return -1;
|
|
|
695
|
|
|
696 c += stats.class_numcpus;
|
|
|
697 }
|
|
|
698 cpus = c;
|
|
|
699 samples = cpus < 2 ? 3 : (2 * cpus / 3);
|
|
|
700 }
|
|
|
701
|
|
|
702 proc_info.sd_next = 0;
|
|
|
703 proc_info.sd_subsys = SUBSYS_PROC;
|
|
|
704 proc_info.sd_type = PROCTYPE_SUMMARY;
|
|
|
705 proc_info.sd_addr = (char *) &proc_sum_data;
|
|
|
706 proc_info.sd_size = sizeof (struct proc_summary);
|
|
|
707 proc_info.sd_sizeused = 0;
|
|
|
708
|
|
|
709 if (inq_stats (1, &proc_info) != 0)
|
|
|
710 return -1;
|
|
|
711
|
|
|
712 load = proc_sum_data.ps_nrunnable;
|
|
|
713 j = 0;
|
|
|
714 for (i = samples - 1; i > 0; --i)
|
|
|
715 {
|
|
|
716 load += proc_sum_data.ps_nrun[j];
|
|
|
717 if (j++ == PS_NRUNSIZE)
|
|
|
718 j = 0;
|
|
|
719 }
|
|
|
720
|
|
|
721 if (nelem > 0)
|
|
|
722 loadavg[elem++] = load / samples / cpus;
|
|
|
723 #endif /* UMAX */
|
|
|
724
|
|
|
725 #if !defined (LDAV_DONE) && defined (DGUX)
|
|
|
726 #define LDAV_DONE
|
|
|
727 /* This call can return -1 for an error, but with good args
|
|
|
728 it's not supposed to fail. The first argument is for no
|
|
|
729 apparent reason of type `long int *'. */
|
|
|
730 dg_sys_info ((long int *) &load_info,
|
|
|
731 DG_SYS_INFO_LOAD_INFO_TYPE,
|
|
|
732 DG_SYS_INFO_LOAD_VERSION_0);
|
|
|
733
|
|
|
734 if (nelem > 0)
|
|
|
735 loadavg[elem++] = load_info.one_minute;
|
|
|
736 if (nelem > 1)
|
|
|
737 loadavg[elem++] = load_info.five_minute;
|
|
|
738 if (nelem > 2)
|
|
|
739 loadavg[elem++] = load_info.fifteen_minute;
|
|
|
740 #endif /* DGUX */
|
|
|
741
|
|
|
742 #if !defined (LDAV_DONE) && defined (OSF_MIPS)
|
|
|
743 #define LDAV_DONE
|
|
|
744
|
|
|
745 struct tbl_loadavg load_ave;
|
|
|
746 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
|
|
|
747 loadavg[elem++]
|
|
|
748 = (load_ave.tl_lscale == 0
|
|
|
749 ? load_ave.tl_avenrun.d[0]
|
|
|
750 : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
|
|
|
751 #endif /* OSF_MIPS */
|
|
|
752
|
|
442
|
753 #if !defined (LDAV_DONE) && (defined (WIN32_NATIVE) || defined (CYGWIN))
|
|
428
|
754 #define LDAV_DONE
|
|
|
755
|
|
|
756 /* A faithful emulation is going to have to be saved for a rainy day. */
|
|
|
757 for ( ; elem < nelem; elem++)
|
|
|
758 {
|
|
|
759 loadavg[elem] = 0.0;
|
|
|
760 }
|
|
442
|
761 #endif /* WIN32_NATIVE or CYGWIN */
|
|
428
|
762
|
|
|
763 #if !defined (LDAV_DONE) && defined (OSF_ALPHA)
|
|
|
764 #define LDAV_DONE
|
|
|
765
|
|
|
766 struct tbl_loadavg load_ave;
|
|
|
767 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
|
|
|
768 for (elem = 0; elem < nelem; elem++)
|
|
|
769 loadavg[elem]
|
|
|
770 = (load_ave.tl_lscale == 0
|
|
|
771 ? load_ave.tl_avenrun.d[elem]
|
|
|
772 : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
|
|
|
773 #endif /* OSF_ALPHA */
|
|
|
774
|
|
|
775 #if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE)
|
|
|
776
|
|
|
777 /* UNIX-specific code -- read the average from /dev/kmem. */
|
|
|
778
|
|
|
779 #define LDAV_PRIVILEGED /* This code requires special installation. */
|
|
|
780
|
|
|
781 LOAD_AVE_TYPE load_ave[3];
|
|
|
782
|
|
|
783 /* Get the address of LDAV_SYMBOL. */
|
|
|
784 if (offset == 0)
|
|
|
785 {
|
|
|
786 #ifndef sgi
|
|
|
787 #ifndef NLIST_STRUCT
|
|
|
788 strcpy (nl[0].n_name, LDAV_SYMBOL);
|
|
|
789 strcpy (nl[1].n_name, "");
|
|
|
790 #else /* NLIST_STRUCT */
|
|
|
791 #ifdef NLIST_NAME_UNION
|
|
|
792 nl[0].n_un.n_name = LDAV_SYMBOL;
|
|
|
793 nl[1].n_un.n_name = 0;
|
|
|
794 #else /* not NLIST_NAME_UNION */
|
|
|
795 nl[0].n_name = (char *) LDAV_SYMBOL;
|
|
|
796 nl[1].n_name = 0;
|
|
|
797 #endif /* not NLIST_NAME_UNION */
|
|
|
798 #endif /* NLIST_STRUCT */
|
|
|
799
|
|
|
800 #ifndef SUNOS_5
|
|
|
801 if (
|
|
|
802 #if !(defined (_AIX) && !defined (ps2))
|
|
|
803 nlist (KERNEL_FILE, nl)
|
|
|
804 #else /* _AIX */
|
|
|
805 knlist (nl, 1, sizeof (nl[0]))
|
|
|
806 #endif
|
|
|
807 >= 0)
|
|
|
808 /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
|
|
|
809 {
|
|
|
810 #ifdef FIXUP_KERNEL_SYMBOL_ADDR
|
|
|
811 FIXUP_KERNEL_SYMBOL_ADDR (nl);
|
|
|
812 #endif
|
|
|
813 offset = nl[0].n_value;
|
|
|
814 }
|
|
|
815 #endif /* !SUNOS_5 */
|
|
|
816 #else /* sgi */
|
|
|
817 int ldav_off;
|
|
|
818
|
|
|
819 ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
|
|
|
820 if (ldav_off != -1)
|
|
|
821 offset = (long) ldav_off & 0x7fffffff;
|
|
|
822 #endif /* sgi */
|
|
|
823 }
|
|
|
824
|
|
|
825 /* Make sure we have /dev/kmem open. */
|
|
|
826 if (!getloadavg_initialized)
|
|
|
827 {
|
|
|
828 #ifndef SUNOS_5
|
|
771
|
829 channel = retry_open ("/dev/kmem", 0);
|
|
428
|
830 if (channel >= 0)
|
|
|
831 {
|
|
|
832 /* Set the channel to close on exec, so it does not
|
|
|
833 litter any child's descriptor table. */
|
|
|
834 #ifdef FD_SETFD
|
|
|
835 #ifndef FD_CLOEXEC
|
|
|
836 #define FD_CLOEXEC 1
|
|
|
837 #endif
|
|
|
838 (void) fcntl (channel, F_SETFD, FD_CLOEXEC);
|
|
|
839 #endif
|
|
|
840 getloadavg_initialized = 1;
|
|
|
841 }
|
|
|
842 #else /* SUNOS_5 */
|
|
|
843 /* We pass 0 for the kernel, corefile, and swapfile names
|
|
|
844 to use the currently running kernel. */
|
|
|
845 kd = kvm_open (0, 0, 0, O_RDONLY, 0);
|
|
|
846 if (kd != 0)
|
|
|
847 {
|
|
|
848 /* nlist the currently running kernel. */
|
|
|
849 kvm_nlist (kd, nl);
|
|
|
850 offset = nl[0].n_value;
|
|
|
851 getloadavg_initialized = 1;
|
|
|
852 }
|
|
|
853 #endif /* SUNOS_5 */
|
|
|
854 }
|
|
|
855
|
|
|
856 /* If we can, get the load average values. */
|
|
|
857 if (offset && getloadavg_initialized)
|
|
|
858 {
|
|
|
859 /* Try to read the load. */
|
|
|
860 #ifndef SUNOS_5
|
|
|
861 if (lseek (channel, offset, 0) == -1L
|
|
771
|
862 || retry_read (channel, (char *) load_ave, sizeof (load_ave))
|
|
428
|
863 != sizeof (load_ave))
|
|
|
864 {
|
|
771
|
865 retry_close (channel);
|
|
428
|
866 getloadavg_initialized = 0;
|
|
|
867 }
|
|
|
868 #else /* SUNOS_5 */
|
|
|
869 if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
|
|
|
870 != sizeof (load_ave))
|
|
|
871 {
|
|
|
872 kvm_close (kd);
|
|
|
873 getloadavg_initialized = 0;
|
|
|
874 }
|
|
|
875 #endif /* SUNOS_5 */
|
|
|
876 }
|
|
|
877
|
|
|
878 if (offset == 0 || !getloadavg_initialized)
|
|
|
879 return -1;
|
|
|
880
|
|
|
881 if (nelem > 0)
|
|
|
882 loadavg[elem++] = LDAV_CVT (load_ave[0]);
|
|
|
883 if (nelem > 1)
|
|
|
884 loadavg[elem++] = LDAV_CVT (load_ave[1]);
|
|
|
885 if (nelem > 2)
|
|
|
886 loadavg[elem++] = LDAV_CVT (load_ave[2]);
|
|
|
887
|
|
|
888 #define LDAV_DONE
|
|
|
889 #endif /* !LDAV_DONE && LOAD_AVE_TYPE */
|
|
|
890
|
|
|
891 return elem;
|
|
|
892 }
|
|
|
893
|
|
|
894 #endif /* ! HAVE_GETLOADAVG */
|
|
|
895
|
|
|
896 #ifdef TEST
|
|
|
897 void
|
|
|
898 main (int argc, char **argv)
|
|
|
899 {
|
|
|
900 int naptime = 0;
|
|
|
901
|
|
|
902 if (argc > 1)
|
|
|
903 naptime = atoi (argv[1]);
|
|
|
904
|
|
|
905 while (1)
|
|
|
906 {
|
|
|
907 double avg[3];
|
|
|
908 int loads;
|
|
|
909
|
|
|
910 errno = 0; /* Don't be misled if it doesn't set errno. */
|
|
|
911 loads = getloadavg (avg, 3);
|
|
|
912 if (loads == -1)
|
|
|
913 {
|
|
|
914 perror ("Error getting load average");
|
|
|
915 exit (1);
|
|
|
916 }
|
|
|
917 if (loads > 0)
|
|
|
918 printf ("1-minute: %f ", avg[0]);
|
|
|
919 if (loads > 1)
|
|
|
920 printf ("5-minute: %f ", avg[1]);
|
|
|
921 if (loads > 2)
|
|
|
922 printf ("15-minute: %f ", avg[2]);
|
|
|
923 if (loads > 0)
|
|
|
924 putchar ('\n');
|
|
|
925
|
|
|
926 if (naptime == 0)
|
|
|
927 break;
|
|
|
928 sleep (naptime);
|
|
|
929 }
|
|
|
930
|
|
|
931 exit (0);
|
|
|
932 }
|
|
|
933 #endif /* TEST */
|
