View of xos/tests/rw_lock.c


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/* Copyright (C) 2008  Emmanuel Varoquaux
 
   This file is part of XOS.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
 
int main()
{
  int pid;
  int fd;
  char buf[8192];
 
  close(creat("TOTO", 0));
  if (!(pid = fork())) {
    printf("p1 ecrit dans le fichier\n");
    assert((fd = open("TOTO", O_WRONLY)) >= 0);
    while (1)
      assert(write(fd, buf, 8192) == 8192);
  }
  sleep(2);
  printf("p2 tue p1\n");
  assert(kill(pid, SIGKILL) >= 0);
  assert(waitpid(pid, NULL, 00) >= 0);
  printf("p2 lit le fichier\n");
  assert((fd = open("TOTO", O_RDONLY)) >= 0);
  assert(read(fd, buf, 8192) == 8192);
  printf("Test concluant, il n'y a pas eu de blocage.\n");
 
  return EXIT_SUCCESS;
}