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145
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1 /* Copyright (C) 2018-2020 Free Software Foundation, Inc.
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2 Contributed by Jakub Jelinek <jakub@redhat.com>.
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3
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4 This file is part of the GNU Offloading and Multi Processing Library
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5 (libgomp).
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6
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7 Libgomp 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
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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14 FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 Under Section 7 of GPL version 3, you are granted additional
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18 permissions described in the GCC Runtime Library Exception, version
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19 3.1, as published by the Free Software Foundation.
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20
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21 You should have received a copy of the GNU General Public License and
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22 a copy of the GCC Runtime Library Exception along with this program;
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23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 <http://www.gnu.org/licenses/>. */
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25
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26 #include "libgomp.h"
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27 #include <string.h>
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28 #include <stdio.h>
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29 #include <stdlib.h>
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30 #ifdef HAVE_UNISTD_H
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31 #include <unistd.h>
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32 #endif
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33 #ifdef HAVE_INTTYPES_H
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34 # include <inttypes.h> /* For PRIx64. */
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35 #endif
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36 #ifdef HAVE_UNAME
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37 #include <sys/utsname.h>
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38 #endif
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39
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40 bool
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41 gomp_print_string (const char *str, size_t len)
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42 {
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43 return fwrite (str, 1, len, stderr) != len;
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44 }
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45
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46 void
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47 gomp_set_affinity_format (const char *format, size_t len)
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48 {
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49 if (len < gomp_affinity_format_len)
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50 memcpy (gomp_affinity_format_var, format, len);
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51 else
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52 {
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53 char *p;
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54 if (gomp_affinity_format_len)
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55 p = gomp_realloc (gomp_affinity_format_var, len + 1);
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56 else
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57 p = gomp_malloc (len + 1);
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58 memcpy (p, format, len);
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59 gomp_affinity_format_var = p;
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60 gomp_affinity_format_len = len + 1;
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61 }
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62 gomp_affinity_format_var[len] = '\0';
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63 }
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64
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65 void
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66 omp_set_affinity_format (const char *format)
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67 {
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68 gomp_set_affinity_format (format, strlen (format));
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69 }
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70
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71 size_t
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72 omp_get_affinity_format (char *buffer, size_t size)
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73 {
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74 size_t len = strlen (gomp_affinity_format_var);
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75 if (size)
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76 {
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77 if (len < size)
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78 memcpy (buffer, gomp_affinity_format_var, len + 1);
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79 else
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80 {
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81 memcpy (buffer, gomp_affinity_format_var, size - 1);
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82 buffer[size - 1] = '\0';
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83 }
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84 }
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85 return len;
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86 }
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87
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88 void
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89 gomp_display_string (char *buffer, size_t size, size_t *ret,
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90 const char *str, size_t len)
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91 {
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92 size_t r = *ret;
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93 if (size && r < size)
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94 {
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95 size_t l = len;
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96 if (size - r < len)
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97 l = size - r;
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98 memcpy (buffer + r, str, l);
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99 }
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100 *ret += len;
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101 if (__builtin_expect (r > *ret, 0))
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102 gomp_fatal ("overflow in omp_capture_affinity");
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103 }
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104
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105 static void
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106 gomp_display_repeat (char *buffer, size_t size, size_t *ret,
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107 char c, size_t len)
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108 {
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109 size_t r = *ret;
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110 if (size && r < size)
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111 {
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112 size_t l = len;
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113 if (size - r < len)
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114 l = size - r;
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115 memset (buffer + r, c, l);
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116 }
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117 *ret += len;
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118 if (__builtin_expect (r > *ret, 0))
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119 gomp_fatal ("overflow in omp_capture_affinity");
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120 }
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121
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122 static void
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123 gomp_display_num (char *buffer, size_t size, size_t *ret,
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124 bool zero, bool right, size_t sz, char *buf)
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125 {
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126 size_t l = strlen (buf);
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127 if (sz == (size_t) -1 || l >= sz)
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128 {
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129 gomp_display_string (buffer, size, ret, buf, l);
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130 return;
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131 }
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132 if (zero)
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133 {
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134 if (buf[0] == '-')
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135 gomp_display_string (buffer, size, ret, buf, 1);
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136 else if (buf[0] == '0' && buf[1] == 'x')
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137 gomp_display_string (buffer, size, ret, buf, 2);
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138 gomp_display_repeat (buffer, size, ret, '0', sz - l);
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139 if (buf[0] == '-')
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140 gomp_display_string (buffer, size, ret, buf + 1, l - 1);
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141 else if (buf[0] == '0' && buf[1] == 'x')
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142 gomp_display_string (buffer, size, ret, buf + 2, l - 2);
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143 else
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144 gomp_display_string (buffer, size, ret, buf, l);
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145 }
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146 else if (right)
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147 {
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148 gomp_display_repeat (buffer, size, ret, ' ', sz - l);
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149 gomp_display_string (buffer, size, ret, buf, l);
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150 }
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151 else
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152 {
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153 gomp_display_string (buffer, size, ret, buf, l);
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154 gomp_display_repeat (buffer, size, ret, ' ', sz - l);
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155 }
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156 }
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157
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158 static void
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159 gomp_display_int (char *buffer, size_t size, size_t *ret,
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160 bool zero, bool right, size_t sz, int num)
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161 {
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162 char buf[3 * sizeof (int) + 2];
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163 sprintf (buf, "%d", num);
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164 gomp_display_num (buffer, size, ret, zero, right, sz, buf);
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165 }
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166
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167 static void
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168 gomp_display_string_len (char *buffer, size_t size, size_t *ret,
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169 bool right, size_t sz, char *str, size_t len)
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170 {
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171 if (sz == (size_t) -1 || len >= sz)
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172 {
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173 gomp_display_string (buffer, size, ret, str, len);
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174 return;
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175 }
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176
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177 if (right)
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178 {
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179 gomp_display_repeat (buffer, size, ret, ' ', sz - len);
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180 gomp_display_string (buffer, size, ret, str, len);
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181 }
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182 else
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183 {
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184 gomp_display_string (buffer, size, ret, str, len);
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185 gomp_display_repeat (buffer, size, ret, ' ', sz - len);
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186 }
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187 }
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188
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189 static void
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190 gomp_display_hostname (char *buffer, size_t size, size_t *ret,
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191 bool right, size_t sz)
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192 {
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193 #ifdef HAVE_GETHOSTNAME
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194 {
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195 char buf[256];
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196 char *b = buf;
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197 size_t len = 256;
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198 do
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199 {
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200 b[len - 1] = '\0';
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201 if (gethostname (b, len - 1) == 0)
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202 {
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203 size_t l = strlen (b);
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204 if (l < len - 1)
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205 {
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206 gomp_display_string_len (buffer, size, ret,
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207 right, sz, b, l);
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208 if (b != buf)
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209 free (b);
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210 return;
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211 }
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212 }
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213 if (len == 1048576)
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214 break;
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215 len = len * 2;
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216 if (len == 512)
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217 b = gomp_malloc (len);
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218 else
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219 b = gomp_realloc (b, len);
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220 }
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221 while (1);
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222 if (b != buf)
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223 free (b);
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224 }
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225 #endif
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226 #ifdef HAVE_UNAME
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227 {
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228 struct utsname buf;
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229 if (uname (&buf) == 0)
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230 {
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231 gomp_display_string_len (buffer, size, ret, right, sz,
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232 buf.nodename, strlen (buf.nodename));
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233 return;
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234 }
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235 }
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236 #endif
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237 gomp_display_string_len (buffer, size, ret, right, sz, "node", 4);
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238 }
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239
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240 struct affinity_types_struct {
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241 char long_str[18];
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242 char long_len;
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243 char short_c; };
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244
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245 static struct affinity_types_struct affinity_types[] =
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246 {
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247 #define AFFINITY_TYPE(l, s) \
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248 { #l, sizeof (#l) - 1, s }
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249 AFFINITY_TYPE (team_num, 't'),
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250 AFFINITY_TYPE (num_teams, 'T'),
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251 AFFINITY_TYPE (nesting_level, 'L'),
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252 AFFINITY_TYPE (thread_num, 'n'),
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253 AFFINITY_TYPE (num_threads, 'N'),
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254 AFFINITY_TYPE (ancestor_tnum, 'a'),
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255 AFFINITY_TYPE (host, 'H'),
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256 AFFINITY_TYPE (process_id, 'P'),
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257 AFFINITY_TYPE (native_thread_id, 'i'),
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258 AFFINITY_TYPE (thread_affinity, 'A')
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259 #undef AFFINITY_TYPE
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260 };
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261
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262 size_t
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263 gomp_display_affinity (char *buffer, size_t size,
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264 const char *format, gomp_thread_handle handle,
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265 struct gomp_team_state *ts, unsigned int place)
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266 {
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267 size_t ret = 0;
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268 do
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269 {
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270 const char *p = strchr (format, '%');
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271 bool zero = false;
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272 bool right = false;
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273 size_t sz = -1;
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274 char c;
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275 int val;
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276 if (p == NULL)
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277 p = strchr (format, '\0');
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278 if (p != format)
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279 gomp_display_string (buffer, size, &ret,
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280 format, p - format);
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281 if (*p == '\0')
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282 break;
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283 p++;
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284 if (*p == '%')
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285 {
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286 gomp_display_string (buffer, size, &ret, "%", 1);
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287 format = p + 1;
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288 continue;
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289 }
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290 if (*p == '0')
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291 {
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292 zero = true;
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293 p++;
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294 if (*p != '.')
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295 gomp_fatal ("leading zero not followed by dot in affinity format");
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296 }
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297 if (*p == '.')
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298 {
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299 right = true;
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300 p++;
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301 }
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302 if (*p >= '1' && *p <= '9')
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303 {
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304 char *end;
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305 sz = strtoul (p, &end, 10);
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306 p = end;
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307 }
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308 else if (zero || right)
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309 gomp_fatal ("leading zero or right justification in affinity format "
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310 "requires size");
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311 c = *p;
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312 if (c == '{')
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313 {
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314 int i;
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315 for (i = 0;
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316 i < sizeof (affinity_types) / sizeof (affinity_types[0]); ++i)
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317 if (strncmp (p + 1, affinity_types[i].long_str,
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318 affinity_types[i].long_len) == 0
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319 && p[affinity_types[i].long_len + 1] == '}')
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320 {
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321 c = affinity_types[i].short_c;
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322 p += affinity_types[i].long_len + 1;
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323 break;
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324 }
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325 if (c == '{')
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326 {
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327 char *q = strchr (p + 1, '}');
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328 if (q)
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329 gomp_fatal ("unsupported long type name '%.*s' in affinity "
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330 "format", (int) (q - (p + 1)), p + 1);
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331 else
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332 gomp_fatal ("unterminated long type name '%s' in affinity "
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333 "format", p + 1);
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334 }
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335 }
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336 switch (c)
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337 {
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338 case 't':
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339 val = omp_get_team_num ();
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340 goto do_int;
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341 case 'T':
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342 val = omp_get_num_teams ();
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343 goto do_int;
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344 case 'L':
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345 val = ts->level;
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346 goto do_int;
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347 case 'n':
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348 val = ts->team_id;
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349 goto do_int;
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350 case 'N':
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351 val = ts->team ? ts->team->nthreads : 1;
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352 goto do_int;
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353 case 'a':
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354 val = ts->team ? ts->team->prev_ts.team_id : -1;
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355 goto do_int;
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356 case 'H':
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357 gomp_display_hostname (buffer, size, &ret, right, sz);
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358 break;
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359 case 'P':
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360 #ifdef HAVE_GETPID
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361 val = getpid ();
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362 #else
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363 val = 0;
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364 #endif
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365 goto do_int;
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366 case 'i':
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367 #if defined(LIBGOMP_USE_PTHREADS) && defined(__GNUC__)
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368 {
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369 char buf[3 * (sizeof (handle) + sizeof (uintptr_t) + sizeof (int))
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370 + 4];
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371 /* This macro returns expr unmodified for integral or pointer
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372 types and 0 for anything else (e.g. aggregates). */
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373 #define gomp_nonaggregate(expr) \
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374 __builtin_choose_expr (__builtin_classify_type (expr) == 1 \
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375 || __builtin_classify_type (expr) == 5, expr, 0)
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376 /* This macro returns expr unmodified for integral types,
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377 (uintptr_t) (expr) for pointer types and 0 for anything else
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378 (e.g. aggregates). */
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379 #define gomp_integral(expr) \
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380 __builtin_choose_expr (__builtin_classify_type (expr) == 5, \
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381 (uintptr_t) gomp_nonaggregate (expr), \
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382 gomp_nonaggregate (expr))
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383
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384 if (sizeof (gomp_integral (handle)) == sizeof (unsigned long))
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385 sprintf (buf, "0x%lx", (unsigned long) gomp_integral (handle));
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386 #if defined (HAVE_INTTYPES_H) && defined (PRIx64)
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387 else if (sizeof (gomp_integral (handle)) == sizeof (uint64_t))
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388 sprintf (buf, "0x%" PRIx64, (uint64_t) gomp_integral (handle));
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389 #else
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390 else if (sizeof (gomp_integral (handle))
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391 == sizeof (unsigned long long))
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392 sprintf (buf, "0x%llx",
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393 (unsigned long long) gomp_integral (handle));
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394 #endif
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395 else
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396 sprintf (buf, "0x%x", (unsigned int) gomp_integral (handle));
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397 gomp_display_num (buffer, size, &ret, zero, right, sz, buf);
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398 break;
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399 }
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400 #else
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401 val = 0;
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402 goto do_int;
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403 #endif
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404 case 'A':
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405 if (sz == (size_t) -1)
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406 gomp_display_affinity_place (buffer, size, &ret,
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407 place - 1);
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408 else if (right)
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409 {
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410 size_t len = 0;
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411 gomp_display_affinity_place (NULL, 0, &len, place - 1);
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412 if (len < sz)
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413 gomp_display_repeat (buffer, size, &ret, ' ', sz - len);
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414 gomp_display_affinity_place (buffer, size, &ret, place - 1);
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415 }
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416 else
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417 {
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418 size_t start = ret;
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419 gomp_display_affinity_place (buffer, size, &ret, place - 1);
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420 if (ret - start < sz)
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421 gomp_display_repeat (buffer, size, &ret, ' ', sz - (ret - start));
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422 }
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423 break;
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424 do_int:
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425 gomp_display_int (buffer, size, &ret, zero, right, sz, val);
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426 break;
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427 default:
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428 gomp_fatal ("unsupported type %c in affinity format", c);
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429 }
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430 format = p + 1;
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431 }
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432 while (1);
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433 return ret;
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434 }
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435
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436 size_t
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437 omp_capture_affinity (char *buffer, size_t size, const char *format)
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438 {
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439 struct gomp_thread *thr = gomp_thread ();
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440 size_t ret
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441 = gomp_display_affinity (buffer, size,
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442 format && *format
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443 ? format : gomp_affinity_format_var,
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444 gomp_thread_self (), &thr->ts, thr->place);
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445 if (size)
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446 {
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447 if (ret >= size)
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448 buffer[size - 1] = '\0';
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449 else
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450 buffer[ret] = '\0';
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451 }
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452 return ret;
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453 }
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454 ialias (omp_capture_affinity)
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455
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456 void
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457 omp_display_affinity (const char *format)
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458 {
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459 char buf[512];
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460 char *b;
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461 size_t ret = ialias_call (omp_capture_affinity) (buf, sizeof buf, format);
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462 if (ret < sizeof buf)
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|
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463 {
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|
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464 buf[ret] = '\n';
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|
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465 gomp_print_string (buf, ret + 1);
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466 return;
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|
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467 }
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|
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468 b = gomp_malloc (ret + 1);
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|
|
469 ialias_call (omp_capture_affinity) (b, ret + 1, format);
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|
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470 b[ret] = '\n';
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|
|
471 gomp_print_string (b, ret + 1);
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|
|
472 free (b);
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|
|
473 }
|
|
|
474
|
|
|
475 void
|
|
|
476 gomp_display_affinity_thread (gomp_thread_handle handle,
|
|
|
477 struct gomp_team_state *ts, unsigned int place)
|
|
|
478 {
|
|
|
479 char buf[512];
|
|
|
480 char *b;
|
|
|
481 size_t ret = gomp_display_affinity (buf, sizeof buf, gomp_affinity_format_var,
|
|
|
482 handle, ts, place);
|
|
|
483 if (ret < sizeof buf)
|
|
|
484 {
|
|
|
485 buf[ret] = '\n';
|
|
|
486 gomp_print_string (buf, ret + 1);
|
|
|
487 return;
|
|
|
488 }
|
|
|
489 b = gomp_malloc (ret + 1);
|
|
|
490 gomp_display_affinity (b, ret + 1, gomp_affinity_format_var,
|
|
|
491 handle, ts, place);
|
|
|
492 b[ret] = '\n';
|
|
|
493 gomp_print_string (b, ret + 1);
|
|
|
494 free (b);
|
|
|
495 }
|
