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handle manager->maxfd somewhat well -- it'll grow, but never shrink, yet.

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This commit is contained in:
Michael Graff
1998-11-11 01:44:08 +00:00
parent 3d8e572880
commit 28866ad778
1 changed files with 17 additions and 3 deletions
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20
lib/isc/unix/socket.c
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@@ -1,4 +1,4 @@
/* $Id: socket.c,v 1.6 1998/11/11 00:43:13 explorer Exp $ */
/* $Id: socket.c,v 1.7 1998/11/11 01:44:08 explorer Exp $ */
#include "attribute.h"
@@ -110,6 +110,7 @@ struct isc_socketmgr {
fd_set read_fds;
fd_set write_fds;
isc_socket_t fds[FD_SETSIZE];
int maxfd;
int pipe_fds[2];
sig_atomic_t pipe_msgs;
};
@@ -263,6 +264,10 @@ destroy(isc_socket_t *sockp)
manager->fds[sock->fd] = NULL;
manager->nsockets--;
/*
* XXX should reset manager->maxfd here
*/
UNLOCK(&manager->lock);
free_socket(sockp);
@@ -412,6 +417,8 @@ isc_socket_create(isc_socketmgr_t manager, isc_sockettype_t type,
manager->fds[sock->fd] = sock;
manager->nsockets++;
if (manager->maxfd < sock->fd)
manager->maxfd = sock->fd;
UNLOCK(&manager->lock);
@@ -666,6 +673,8 @@ internal_accept(isc_task_t task, isc_event_t ev)
*/
LOCK(&sock->manager->lock);
sock->manager->fds[fd] = dev->newsocket;
if (sock->manager->maxfd < fd)
sock->manager->maxfd = fd;
UNLOCK(&sock->manager->lock);
send_ncdone_event(sock, &iev, &dev, ISC_R_SUCCESS);
@@ -977,6 +986,7 @@ watcher(void *uap)
int i;
isc_socket_intev_t iev;
isc_socket_ncintev_t nciev;
int maxfd;
/*
* Get the control fd here. This will never change.
@@ -989,11 +999,14 @@ watcher(void *uap)
do {
readfds = manager->read_fds;
writefds = manager->write_fds;
maxfd = manager->maxfd + 1;
UNLOCK(&manager->lock);
cc = select(FD_SETSIZE, &readfds, &writefds, NULL,
cc = select(maxfd, &readfds, &writefds, NULL,
NULL);
XTRACE(("select(%d, ...) == %d, errno %d\n",
maxfd, cc, errno));
if (cc < 0) {
if (errno != EINTR)
UNEXPECTED_ERROR(__FILE__, __LINE__,
@@ -1085,7 +1098,7 @@ watcher(void *uap)
* Process read/writes on other fds here. Avoid locking
* and unlocking twice if both reads and writes are possible.
*/
for (i = 0 ; i < FD_SETSIZE ; i++) {
for (i = 0 ; i < maxfd ; i++) {
if (manager->fds[i] != NULL) {
sock = manager->fds[i];
unlock_sock = ISC_FALSE;
@@ -1172,6 +1185,7 @@ isc_socketmgr_create(isc_memctx_t mctx, isc_socketmgr_t *managerp)
FD_ZERO(&manager->read_fds);
FD_ZERO(&manager->write_fds);
FD_SET(manager->pipe_fds[0], &manager->read_fds);
manager->maxfd = manager->pipe_fds[0];
/*
* Start up the select/poll thread.