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Cleaned up the locking code to make it more fine grained. Did this since

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dncache.c has locking itself now.
This commit is contained in:
Robert James Kaes 2001-08-29 04:00:22 +00:00
parent 9bdfa623ba
commit fcff398f31
1 changed files with 10 additions and 18 deletions
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28
src/sock.c
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@ -1,4 +1,4 @@
/* $Id: sock.c,v 1.5 2001-05-27 02:31:20 rjkaes Exp $
/* $Id: sock.c,v 1.6 2001-08-29 04:00:22 rjkaes Exp $
*
* Sockets are created and destroyed here. When a new connection comes in from
* a client, we need to copy the socket and the create a second socket to the
@ -29,16 +29,14 @@
#include "utils.h"
/*
* The mutex is used for locking around the calls to the dnscache since I
* don't want multiple threads accessing the linked list at the same time.
* This should be more fine grained, but it will do for now.
* The mutex is used for locking around any calls which access global
* variables.
* - rjkaes
*/
static pthread_mutex_t sock_mutex = PTHREAD_MUTEX_INITIALIZER;
#define SOCK_LOCK() pthread_mutex_lock(&sock_mutex);
#define SOCK_UNLOCK() pthread_mutex_unlock(&sock_mutex);
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
#define LOCK() pthread_mutex_lock(&mutex);
#define UNLOCK() pthread_mutex_unlock(&mutex);
/* This routine is so old I can't even remember writing it. But I do
* remember that it was an .h file because I didn't know putting code in a
@ -64,13 +62,8 @@ int opensock(char *ip_addr, uint16_t port)
port_info.sin_family = AF_INET;
/* chris - Could block; neet to ensure that this is never called
* before a non-blocking DNS query happens for this address. Not
* relevant in the code as it stands.
*/
SOCK_LOCK();
/* Lookup and return the address if possible */
ret = dnscache(&port_info.sin_addr, ip_addr);
SOCK_UNLOCK();
if (ret < 0) {
log_message(LOG_ERR, "opensock: Could not lookup address: %s", ip_addr);
@ -194,14 +187,13 @@ char *getpeer_string(int fd, char *string)
if (getpeername(fd, (struct sockaddr *)&name, &namelen) != 0) {
log_message(LOG_ERR, "Connect: 'could not get peer name'");
} else {
SOCK_LOCK();
LOCK();
peername = gethostbyaddr((char *)&name.sin_addr.s_addr,
sizeof(name.sin_addr.s_addr),
AF_INET);
if (peername) {
if (peername)
strlcpy(string, peername->h_name, PEER_STRING_LENGTH);
}
SOCK_UNLOCK();
UNLOCK();
}
return string;