60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
|
Currently if we max out the maximum number of files, pseudo can deadlock, unable to
|
||
|
|
accept new connections yet unable to move forward and unblock the other processes
|
||
|
|
waiting either.
|
||
|
|
|
||
|
|
Rather than hang, when this happens, close out inactive connections, allowing us
|
||
|
|
to accept the new ones. The disconnected clients will simply reconnect. There is
|
||
|
|
a small risk of data loss here sadly but its better than hanging.
|
||
|
|
|
||
|
|
RP
|
||
|
|
2017/4/25
|
||
|
|
|
||
|
|
Upstream-Status: Submitted [Peter is aware of the issue]
|
||
|
|
|
||
|
|
Index: pseudo-1.8.2/pseudo_server.c
|
||
|
|
===================================================================
|
||
|
|
--- pseudo-1.8.2.orig/pseudo_server.c
|
||
|
|
+++ pseudo-1.8.2/pseudo_server.c
|
||
|
|
@@ -581,6 +581,7 @@ pseudo_server_loop(void) {
|
||
|
|
int rc;
|
||
|
|
int fd;
|
||
|
|
int loop_timeout = pseudo_server_timeout;
|
||
|
|
+ int hitmaxfiles;
|
||
|
|
|
||
|
|
clients = malloc(16 * sizeof(*clients));
|
||
|
|
|
||
|
|
@@ -597,6 +598,7 @@ pseudo_server_loop(void) {
|
||
|
|
active_clients = 1;
|
||
|
|
max_clients = 16;
|
||
|
|
highest_client = 0;
|
||
|
|
+ hitmaxfiles = 0;
|
||
|
|
|
||
|
|
pseudo_debug(PDBGF_SERVER, "server loop started.\n");
|
||
|
|
if (listen_fd < 0) {
|
||
|
|
@@ -663,10 +665,15 @@ pseudo_server_loop(void) {
|
||
|
|
message_time.tv_usec -= 1000000;
|
||
|
|
++message_time.tv_sec;
|
||
|
|
}
|
||
|
|
+ } else if (hitmaxfiles) {
|
||
|
|
+ /* Only close one per loop iteration in the interests of caution */
|
||
|
|
+ close_client(i);
|
||
|
|
+ hitmaxfiles = 0;
|
||
|
|
}
|
||
|
|
if (die_forcefully)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
+ hitmaxfiles = 0;
|
||
|
|
if (!die_forcefully &&
|
||
|
|
(FD_ISSET(clients[0].fd, &events) ||
|
||
|
|
FD_ISSET(clients[0].fd, &reads))) {
|
||
|
|
@@ -688,6 +698,9 @@ pseudo_server_loop(void) {
|
||
|
|
*/
|
||
|
|
pseudo_server_timeout = DEFAULT_PSEUDO_SERVER_TIMEOUT;
|
||
|
|
die_peacefully = 0;
|
||
|
|
+ } else if (errno == EMFILE) {
|
||
|
|
+ hitmaxfiles = 1;
|
||
|
|
+ pseudo_debug(PDBGF_SERVER, "Hit max open files, dropping a client.\n");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
pseudo_debug(PDBGF_SERVER, "server loop complete [%d clients left]\n", active_clients);
|