85 lines
1.5 KiB
C
85 lines
1.5 KiB
C
/*
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* funcs.c
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <sys/time.h>
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#include "funcs.h"
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extern int verbosity;
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/* --------------------------------------------------------------- */
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int seed_my_rand(int foo)
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{
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long v1, v2;
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v1 = getpid(); v2 = time(NULL);
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return v1 ^ v2;
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}
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/* --------------------------------------------------------------- */
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int random1000(int type)
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{
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int value;
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if (verbosity)
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fprintf(stderr, ">>> %s(%d)\n", __func__, type);
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switch (type) {
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case 0:
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value = rand() % 1000;
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break;
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case 1:
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value = (rand()%1000 + rand()%1000) / 2;
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break;
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default:
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value = -1;
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break;
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}
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return value;
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}
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/* --------------------------------------------------------------- */
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double dtime(void)
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{
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struct timeval tv;
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int foo;
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foo = gettimeofday(&tv, NULL);
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if (foo) fprintf(stderr, "got %d in %s\n", foo, __func__);
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return (double)tv.tv_sec + (double)tv.tv_usec / 1e6;
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}
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/* --------------------------------------------------------------- */
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int get_loadavg(double *where)
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{
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FILE *fp;
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double loads[3];
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int foo;
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if ( ! (fp=fopen("/proc/loadavg", "r")) ) {
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perror("read loadavg");
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return -1;
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}
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foo = fscanf(fp, "%lf %lf %lf", loads, loads+1, loads+2);
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if (3 != foo) fprintf(stderr, "%s : read %d vals\n", __func__, foo);
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memcpy(where, loads, 3 * sizeof(double));
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fclose(fp);
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return 0;
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}
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/* --------------------------------------------------------------- */
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