mir/bind
2
0
Fork 0
mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-31 14:35:26 +00:00
Code Issues Releases Wiki Activity

Use generic functions for reading and timers in TCP

Browse Source 
The TCP module has been updated to use the generic functions from
netmgr.c instead of its own local copies.  This brings the module
mostly up to par with the TCPDNS and TLSDNS modules.
This commit is contained in:
Ondřej Surý
2021-03-31 12:14:54 +02:00
parent 7df8c7061c
commit ca12e25bb0
3 changed files with 21 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
lib/isc/netmgr/tcp.c
View File

@@ -63,9 +63,6 @@ tcp_connect_cb(uv_connect_t *uvreq, int status);
static void
tcp_connection_cb(uv_stream_t *server, int status);
static void
read_cb(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf);
static void
tcp_close_cb(uv_handle_t *uvhandle);
@@ -86,15 +83,6 @@ stop_tcp_parent(isc_nmsocket_t *sock);
static void
stop_tcp_child(isc_nmsocket_t *sock);
static void
start_reading(isc_nmsocket_t *sock);
static void
stop_reading(isc_nmsocket_t *sock);
static void
tcp_alloc_cb(uv_handle_t *handle, size_t size, uv_buf_t *buf);
static void
failed_accept_cb(isc_nmsocket_t *sock, isc_result_t eresult) {
REQUIRE(sock->accepting);
@@ -687,7 +675,8 @@ failed_read_cb(isc_nmsocket_t *sock, isc_result_t result) {
REQUIRE(VALID_NMSOCK(sock));
REQUIRE(sock->statichandle != NULL);
stop_reading(sock);
isc__nmsocket_timer_stop(sock);
isc__nm_stop_reading(sock);
if (!sock->recv_read) {
goto destroy;
@@ -728,30 +717,6 @@ failed_send_cb(isc_nmsocket_t *sock, isc__nm_uvreq_t *req,
}
}
static void
start_reading(isc_nmsocket_t *sock) {
if (sock->reading) {
return;
}
int r = uv_read_start(&sock->uv_handle.stream, tcp_alloc_cb, read_cb);
REQUIRE(r == 0);
sock->reading = true;
}
static void
stop_reading(isc_nmsocket_t *sock) {
if (!sock->reading) {
return;
}
int r = uv_read_stop(&sock->uv_handle.stream);
REQUIRE(r == 0);
sock->reading = false;
isc__nmsocket_timer_stop(sock);
}
void
isc__nm_tcp_read(isc_nmhandle_t *handle, isc_nm_recv_cb_t cb, void *cbarg) {
REQUIRE(VALID_NMHANDLE(handle));
@@ -789,32 +754,6 @@ isc__nm_tcp_read(isc_nmhandle_t *handle, isc_nm_recv_cb_t cb, void *cbarg) {
return;
}
/*%<
* Allocator for TCP read operations. Limited to size 2^16.
*
* Note this doesn't actually allocate anything, it just assigns the
* worker's receive buffer to a socket, and marks it as "in use".
*/
static void
tcp_alloc_cb(uv_handle_t *handle, size_t size, uv_buf_t *buf) {
isc_nmsocket_t *sock = uv_handle_get_data(handle);
isc__networker_t *worker = NULL;
REQUIRE(VALID_NMSOCK(sock));
REQUIRE(sock->type == isc_nm_tcpsocket);
REQUIRE(isc__nm_in_netthread());
if (size > 65536) {
size = 65536;
}
worker = &sock->mgr->workers[sock->tid];
INSIST(!worker->recvbuf_inuse);
buf->base = worker->recvbuf;
buf->len = size;
worker->recvbuf_inuse = true;
}
void
isc__nm_async_tcpstartread(isc__networker_t *worker, isc__netievent_t *ev0) {
isc__netievent_tcpstartread_t *ievent =
@@ -831,7 +770,7 @@ isc__nm_async_tcpstartread(isc__networker_t *worker, isc__netievent_t *ev0) {
return;
}
start_reading(sock);
isc__nm_start_reading(sock);
isc__nmsocket_timer_start(sock);
}
@@ -868,7 +807,8 @@ isc__nm_async_tcppauseread(isc__networker_t *worker, isc__netievent_t *ev0) {
REQUIRE(sock->tid == isc_nm_tid());
UNUSED(worker);
stop_reading(sock);
isc__nmsocket_timer_stop(sock);
isc__nm_stop_reading(sock);
}
void
@@ -903,8 +843,8 @@ isc__nm_tcp_resumeread(isc_nmhandle_t *handle) {
(isc__netievent_t *)ievent);
}
static void
read_cb(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf) {
void
isc__nm_tcp_read_cb(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf) {
isc_nmsocket_t *sock = uv_handle_get_data((uv_handle_t *)stream);
isc__nm_uvreq_t *req = NULL;
@@ -1142,11 +1082,11 @@ isc__nm_tcp_send(isc_nmhandle_t *handle, const isc_region_t *region,
static void
tcp_send_cb(uv_write_t *req, int status) {
isc__nm_uvreq_t *uvreq = (isc__nm_uvreq_t *)req->data;
isc_nmsocket_t *sock = uvreq->sock;
REQUIRE(VALID_UVREQ(uvreq));
REQUIRE(VALID_NMHANDLE(uvreq->handle));
isc_nmsocket_t *sock = uvreq->sock;
if (status < 0) {
isc__nm_incstats(sock->mgr, sock->statsindex[STATID_SENDFAIL]);
failed_send_cb(sock, uvreq, isc__nm_uverr2result(status));
@@ -1336,7 +1276,10 @@ tcp_close_direct(isc_nmsocket_t *sock) {
isc_quota_detach(&sock->quota);
}
stop_reading(sock);
isc__nmsocket_timer_stop(sock);
isc__nm_stop_reading(sock);
uv_handle_set_data((uv_handle_t *)&sock->timer, sock);
uv_close((uv_handle_t *)&sock->timer, timer_close_cb);
}