1 | /* |
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2 | ** $Id: get_memusage.c,v 1.10 2010-11-09 19:08:53 rosinski Exp $ |
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3 | ** |
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4 | ** Author: Jim Rosinski |
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5 | ** Credit to Chuck Bardeen for MACOS section (__APPLE__ ifdef) |
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6 | ** |
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7 | ** get_memusage: |
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8 | ** |
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9 | ** Designed to be called from Fortran, returns information about memory |
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10 | ** usage in each of 5 input int* args. On Linux read from the /proc |
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11 | ** filesystem because getrusage() returns placebos (zeros). Return -1 for |
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12 | ** values which are unavailable or ambiguous on a particular architecture. |
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13 | ** |
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14 | ** Return value: 0 = success |
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15 | ** -1 = failure |
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16 | */ |
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17 | |
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18 | #include <sys/resource.h> |
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19 | |
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20 | /*#include "gptl.h" */ /* additional cpp defs and function prototypes */ |
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21 | /* extern int gptlget_memusage_ (int *, int *, int *, int *, int *); */ |
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22 | |
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23 | /* _AIX is automatically defined when using the AIX C compilers */ |
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24 | #ifdef _AIX |
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25 | #include <sys/times.h> |
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26 | #endif |
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27 | |
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28 | #ifdef IRIX64 |
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29 | #include <sys/time.h> |
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30 | #endif |
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31 | |
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32 | #ifdef __APPLE__ |
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33 | |
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34 | #include <stdio.h> |
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35 | #include <stdlib.h> |
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36 | #include <unistd.h> |
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37 | |
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38 | #elif (defined HAVE_SLASHPROC) |
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39 | |
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40 | #include <sys/time.h> |
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41 | #include <sys/types.h> |
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42 | #include <stdio.h> |
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43 | #include <unistd.h> |
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44 | |
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45 | #endif |
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46 | |
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47 | #ifdef BGP |
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48 | |
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49 | #include <spi/kernel_interface.h> |
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50 | #include <common/bgp_personality.h> |
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51 | #include <common/bgp_personality_inlines.h> |
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52 | #include <malloc.h> |
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53 | #define Personality _BGP_Personality_t |
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54 | |
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55 | #endif |
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56 | |
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57 | #ifdef BGQ |
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58 | |
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59 | #include <malloc.h> |
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60 | #include <spi/include/kernel/memory.h> |
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61 | |
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62 | #endif |
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63 | |
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64 | int gptlget_memusage (int *size, int *rss, int *share, int *text, int *datastack) |
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65 | { |
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66 | #if defined (BGP) || defined(BGQ) |
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67 | |
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68 | long long alloc; |
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69 | struct mallinfo m; |
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70 | #if defined (BGP) |
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71 | Personality pers; |
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72 | #endif |
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73 | #if defined (BGQ) |
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74 | uint64_t shared_mem_count; |
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75 | #endif |
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76 | long long total; |
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77 | int node_config; |
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78 | |
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79 | /* memory available */ |
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80 | #if defined(BGP) |
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81 | Kernel_GetPersonality(&pers, sizeof(pers)); |
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82 | total = BGP_Personality_DDRSizeMB(&pers); |
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83 | |
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84 | node_config = BGP_Personality_processConfig(&pers); |
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85 | if (node_config == _BGP_PERS_PROCESSCONFIG_VNM) total /= 4; |
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86 | else if (node_config == _BGP_PERS_PROCESSCONFIG_2x2) total /= 2; |
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87 | total *= 1024*1024; |
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88 | |
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89 | *size = total; |
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90 | #endif |
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91 | |
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92 | #if defined(BGQ) |
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93 | Kernel_GetMemorySize(KERNEL_MEMSIZE_SHARED, &shared_mem_count); |
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94 | |
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95 | shared_mem_count *= 1024*1024; |
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96 | *size = shared_mem_count; |
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97 | |
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98 | #endif |
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99 | /* total memory used - heap only (not static memory)*/ |
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100 | |
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101 | m = mallinfo(); |
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102 | alloc = m.hblkhd + m.uordblks; |
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103 | |
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104 | *rss = alloc; |
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105 | *share = -1; |
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106 | *text = -1; |
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107 | *datastack = -1; |
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108 | |
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109 | #elif (defined __APPLE__) |
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110 | |
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111 | FILE *fd; |
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112 | char cmd[60]; |
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113 | int pid = (int) getpid (); |
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114 | |
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115 | sprintf (cmd, "ps -o vsz -o rss -o tsiz -p %d | grep -v RSS", pid); |
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116 | fd = popen (cmd, "r"); |
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117 | |
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118 | if (fd) { |
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119 | fscanf (fd, "%d %d %d", size, rss, text); |
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120 | *share = -1; |
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121 | *datastack = -1; |
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122 | (void) pclose (fd); |
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123 | } |
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124 | |
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125 | return 0; |
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126 | |
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127 | #elif (defined HAVE_SLASHPROC) |
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128 | FILE *fd; /* file descriptor for fopen */ |
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129 | int pid; /* process id */ |
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130 | static char *head = "/proc/"; /* part of path */ |
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131 | static char *tail = "/statm"; /* part of path */ |
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132 | char file[19]; /* full path to file in /proc */ |
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133 | int dum; /* placeholder for unused return arguments */ |
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134 | int ret; /* function return value */ |
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135 | |
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136 | /* |
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137 | ** The file we want to open is /proc/<pid>/statm |
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138 | */ |
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139 | |
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140 | pid = (int) getpid (); |
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141 | if (pid > 999999) { |
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142 | fprintf (stderr, "get_memusage: pid %d is too large\n", pid); |
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143 | return -1; |
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144 | } |
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145 | |
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146 | sprintf (file, "%s%d%s", head, pid, tail); |
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147 | if ((fd = fopen (file, "r")) < 0) { |
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148 | fprintf (stderr, "get_memusage: bad attempt to open %s\n", file); |
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149 | return -1; |
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150 | } |
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151 | |
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152 | /* |
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153 | ** Read the desired data from the /proc filesystem directly into the output |
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154 | ** arguments, close the file and return. |
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155 | */ |
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156 | |
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157 | ret = fscanf (fd, "%d %d %d %d %d %d %d", |
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158 | size, rss, share, text, datastack, &dum, &dum); |
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159 | ret = fclose (fd); |
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160 | return 0; |
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161 | |
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162 | #else |
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163 | |
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164 | struct rusage usage; /* structure filled in by getrusage */ |
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165 | |
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166 | if (getrusage (RUSAGE_SELF, &usage) < 0) |
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167 | return -1; |
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168 | |
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169 | *size = -1; |
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170 | *rss = usage.ru_maxrss; |
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171 | *share = -1; |
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172 | *text = -1; |
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173 | *datastack = -1; |
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174 | #ifdef IRIX64 |
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175 | *datastack = usage.ru_idrss + usage.ru_isrss; |
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176 | #endif |
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177 | return 0; |
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178 | |
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179 | #endif |
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180 | } |
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