mirror of
https://github.com/gnif/LookingGlass.git
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100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/**
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* Looking Glass
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* Copyright © 2017-2024 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "common/cpuinfo.h"
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#include "common/debug.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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bool cpuInfo_get(char * model, size_t modelSize, int * procs, int * cores,
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int * sockets)
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{
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FILE * cpuinfo = fopen("/proc/cpuinfo", "r");
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if (!cpuinfo)
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{
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DEBUG_ERROR("Failed to open /proc/cpuinfo: %s", strerror(errno));
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return false;
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}
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int socketCount = 0;
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if (procs)
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*procs = 0;
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if (cores)
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*cores = 0;
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char buffer[1024];
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while (fgets(buffer, sizeof(buffer), cpuinfo))
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{
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if (procs && strncmp(buffer, "processor", 9) == 0)
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++*procs;
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else if (model && strncmp(buffer, "model name", 10) == 0)
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{
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const char * name = strstr(buffer, ": ");
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if (name)
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name += 2;
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int len = snprintf(model, modelSize, "%s", name ? name : "Unknown");
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// trim any whitespace
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while(len > 0 && isspace(model[len-1]))
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--len;
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model[len] = '\0';
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model = NULL;
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}
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else if (cores && *cores == 0 && strncmp(buffer, "cpu cores", 9) == 0)
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{
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const char * num = strstr(buffer, ": ");
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if (num)
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*cores = atoi(num + 2);
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}
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else if (strncmp(buffer, "physical id", 11) == 0)
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{
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const char * num = strstr(buffer, ": ");
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if (num)
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{
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int id = atoi(num + 2);
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if (id >= socketCount)
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socketCount = id + 1;
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}
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}
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// If a line is too long, skip it.
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while (buffer[strlen(buffer) - 1] != '\n')
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if (!fgets(buffer, sizeof(buffer), cpuinfo))
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goto done;
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}
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done:
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if (sockets)
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*sockets = socketCount;
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if (cores)
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*cores *= socketCount;
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fclose(cpuinfo);
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return true;
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}
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