select() and pthread

[dawwin]

I am writing a simple server program and I've got a question about select() and threads. I wrote following function:


int recv_timeout(int s, char *buffer, int msg_len, int seconds)
{
struct timeval tv;
fd_set rset;
int maxfdp1;
int result;

FD_ZERO(&rset);
FD_SET(s, &rset);
maxfdp1 = s + 1;
tv.tv_usec = 0;
tv.tv_sec = seconds;

switch (select(maxfdp1, &rset, NULL, NULL, &tv)) {
case -1:
return -1;
case 0:
return 0;
default:
if (FD_ISSET(s, &rset) != 0) {
result = recv(s, buffer, msg_len, MSG_NOSIGNAL);
if (result == 0) {
result = -1;
}

return result;
} else {
return -1;
}

break;
}

return -1;
}
It's recv() with timeout. I used select() for timeout.
Ii my program I create thread for each user.
It this save to use select() in posix threads?

[dwhitney67]

AFAIK, select() is thread-safe.