static
void
concur(void)
{
int i, fd;
int r1, r2, w1;
printf("Spawning 2 readers, 1 writer.\n");
fd = open(FNAME, O_WRONLY|O_CREAT|O_TRUNC, 0664);
if (fd < 0) {
err(1, "[CONCUR]: %s: open", FNAME);
}
printf("Initializing test file: ");
for (i = 0; i < SECTOR_SIZE + 1; i++) {
cbuffer[i] = READCHAR;
}
for (i = 0; i < TMULT; i++) {
write(fd, cbuffer, SECTOR_SIZE + 1);
}
close(fd);
printf("Done initializing. Starting processes...\n");
r1 = forkoff(subproc_read);
w1 = forkoff(subproc_write);
r2 = forkoff(subproc_read);
printf("Waiting for processes.\n");
dowait(r1);
dowait(r2);
dowait(w1);
if (remove(FNAME)) {
err(1, "[CONCUR]: %s: remove", FNAME);
}
printf("[CONCUR] Done!\n");
}
int
main (void)
{
setbuf (stdout, NULL);
printf ("main: %d\n", (int) getpid ());
/* General hardware breakpoints and watchpoints validity. */
marker ();
var++;
/* Hardware watchpoints got disarmed here. */
forkoff (1);
/* This watchpoint got lost before. */
var++;
/* A sanity check for double hardware watchpoints removal. */
forkoff (2);
var++;
mark_exit ();
return 0;
}
int
main (void)
{
int i;
void *thread_result;
setbuf (stdout, NULL);
printf ("main: %d\n", (int) gettid ());
/* General hardware breakpoints and watchpoints validity. */
marker ();
var++; /* validity-first */
empty (); /* validity-first */
i = pthread_create (&thread, NULL, start, NULL);
assert (i == 0);
var++; /* validity-thread-A */
empty (); /* validity-thread-A */
step = 1;
while (step != 2)
{
i = pthread_yield ();
assert (i == 0);
}
/* Hardware watchpoints got disarmed here. */
forkoff (1);
var++; /* after-fork1-A */
empty (); /* after-fork1-A */
step = 3;
#ifdef FOLLOW_CHILD
/* Spawn new thread as it was deleted in the child of FORK. */
i = pthread_create (&thread, NULL, start, NULL);
assert (i == 0);
#endif
while (step != 4)
{
i = pthread_yield ();
assert (i == 0);
}
/* A sanity check for double hardware watchpoints removal. */
forkoff (2);
var++; /* after-fork2-A */
empty (); /* after-fork2-A */
step = 5;
#ifdef FOLLOW_CHILD
/* Spawn new thread as it was deleted in the child of FORK. */
i = pthread_create (&thread, NULL, start, NULL);
assert (i == 0);
#endif
i = pthread_join (thread, &thread_result);
assert (i == 0);
assert (thread_result == (void *) 5UL);
mark_exit ();
return 0;
}
