void *computethread(void *arg1)
{
int error;
int localdone = 0;
struct timespec sleeptime;
double val;
sleeptime.tv_sec = 0;
sleeptime.tv_nsec = TEN_MILLION;
while(!localdone)
{
if (error = randsafe(&val))
break;
if (error = add( sin(val) ))
break;
if (error = getdone(&localdone))
break;
nanosleep(&sleeptime, NULL);
}
seterror(error);
return NULL;
}
/* ARGSUSED */
void *computethread(void *arg1) { /* compute a random partial sum */
int error;
int localdone = 0;
struct timespec sleeptime;
double val;
sleeptime.tv_sec = 0;
sleeptime.tv_nsec = TEN_MILLION; /* 10 ms */
while (!localdone) {
if (error = randsafe(&val)) /* get a random number between 0.0 and 1.0 */
break;
if (error = add(sin(val)))
break;
if (error = getdone(&localdone))
break;
nanosleep(&sleeptime, NULL); /* let other threads in */
}
seterror(error);
return NULL;
}
int main(int argc, char *argv[]) {
char buf[BLKSIZE];
int done = 0;
int error;
int fd1;
int fd2;
/* open the file descriptors for I/O */
if (argc != 3) {
fprintf(stderr, "Usage: %s filename1 filename2\n", argv[0]);
return 1;
}
if ((fd1 = open(argv[1], O_RDONLY)) == -1) {
fprintf(stderr, "Failed to open %s:%s\n", argv[1], strerror(errno));
return 1;
}
if ((fd2 = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, MODE)) == -1) {
fprintf(stderr, "Failed to open %s: %s\n", argv[2], strerror(errno));
return 1;
}
if (initsignal(SIGRTMAX) == -1) {
perror("Failed to initialize signal");
return 1;
}
if (initread(fd1, fd2, SIGRTMAX, buf, BLKSIZE) == -1) {
perror("Failed to initate the first read");
return 1;
}
for ( ; ; ) {
dowork();
if (!done)
if (done = getdone())
if (error = geterror())
fprintf(stderr, "Failed to copy file:%s\n", strerror(error));
else
fprintf(stderr, "Copy successful, %d bytes\n", getbytes());
}
}
