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199 lines
3.6 KiB
C
199 lines
3.6 KiB
C
/*
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* utils.c: basic test utils
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*
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* Copyright (C) 2005 Red Hat, Inc.
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*
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* See COPYING.LIB for the License of this software
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*
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* Karel Zak <kzak@redhat.com>
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*
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* $Id$
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <paths.h>
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#include "testutils.h"
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#define GETTIMEOFDAY(T) gettimeofday(T, NULL)
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#define DIFF_MSEC(T, U) \
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((((int) ((T)->tv_sec - (U)->tv_sec)) * 1000000.0 + \
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((int) ((T)->tv_usec - (U)->tv_usec))) / 1000.0)
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double
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virtTestCountAverage(double *items, int nitems)
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{
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long double sum = 0;
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int i;
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for (i=1; i < nitems; i++)
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sum += items[i];
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return (double) (sum / nitems);
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}
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/*
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* Runs test and count average time (if the nloops is grater than 1)
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*
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* returns: -1 = error, 0 = success
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*/
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int
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virtTestRun(const char *title, int nloops, int (*body)(void *data), void *data)
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{
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int i, ret = 0;
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double *ts = NULL;
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if (nloops > 1 && (ts = calloc(nloops,
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sizeof(double)))==NULL)
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return -1;
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for (i=0; i < nloops; i++) {
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struct timeval before, after;
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if (ts)
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GETTIMEOFDAY(&before);
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if ((ret = body(data)) != 0)
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break;
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if (ts) {
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GETTIMEOFDAY(&after);
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ts[i] = DIFF_MSEC(&after, &before);
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}
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}
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if (ret == 0 && ts)
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fprintf(stderr, "%-50s ... OK [%.5f ms]\n", title,
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virtTestCountAverage(ts, nloops));
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else if (ret == 0)
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fprintf(stderr, "%-50s ... OK\n", title);
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else
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fprintf(stderr, "%-50s ... FAILED\n", title);
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if (ts)
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free(ts);
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return ret;
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}
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int virtTestLoadFile(const char *name,
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char **buf,
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int buflen) {
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FILE *fp = fopen(name, "r");
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struct stat st;
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if (!fp)
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return -1;
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if (fstat(fileno(fp), &st) < 0) {
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fclose(fp);
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return -1;
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}
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if (st.st_size > (buflen-1)) {
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fclose(fp);
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return -1;
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}
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if (fread(*buf, st.st_size, 1, fp) != 1) {
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fclose(fp);
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return -1;
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}
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(*buf)[st.st_size] = '\0';
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fclose(fp);
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return st.st_size;
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}
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static
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void virtTestCaptureProgramExecChild(const char *const argv[],
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int pipefd) {
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int i;
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int open_max;
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int stdinfd = -1;
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int stderrfd = -1;
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const char *const env[] = {
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"LANG=C",
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NULL
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};
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if ((stdinfd = open(_PATH_DEVNULL, O_RDONLY)) < 0)
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goto cleanup;
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if ((stderrfd = open(_PATH_DEVNULL, O_WRONLY)) < 0)
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goto cleanup;
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open_max = sysconf (_SC_OPEN_MAX);
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for (i = 0; i < open_max; i++) {
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if (i != stdinfd &&
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i != stderrfd &&
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i != pipefd)
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close(i);
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}
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if (dup2(stdinfd, STDIN_FILENO) != STDIN_FILENO)
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goto cleanup;
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if (dup2(pipefd, STDOUT_FILENO) != STDOUT_FILENO)
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goto cleanup;
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if (dup2(stderrfd, STDERR_FILENO) != STDERR_FILENO)
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goto cleanup;
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/* SUS is crazy here, hence the cast */
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execve(argv[0], (char *const*)argv, (char *const*)env);
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cleanup:
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if (stdinfd != -1)
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close(stdinfd);
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if (stderrfd != -1)
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close(stderrfd);
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}
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int virtTestCaptureProgramOutput(const char *const argv[],
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char **buf,
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int buflen) {
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int pipefd[2];
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if (pipe(pipefd) < 0)
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return -1;
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int pid = fork();
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switch (pid) {
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case 0:
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close(pipefd[0]);
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virtTestCaptureProgramExecChild(argv, pipefd[1]);
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close(pipefd[1]);
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_exit(1);
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case -1:
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return -1;
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default:
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{
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int got = 0;
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int ret = -1;
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int want = buflen-1;
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close(pipefd[1]);
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while (want) {
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if ((ret = read(pipefd[0], (*buf)+got, want)) <= 0)
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break;
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got += ret;
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want -= ret;
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}
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close(pipefd[0]);
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if (!ret)
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(*buf)[got] = '\0';
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waitpid(pid, NULL, 0);
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return ret;
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}
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}
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}
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