Mercurial > hg > freeDiameter
view libfdcore/p_expiry.c @ 1247:2c09e2545188
Remove useless CER/CEA compact dump in dbg_msg_dumps extension
author | Sebastien Decugis <sdecugis@freediameter.net> |
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date | Tue, 12 Nov 2013 16:16:15 +0800 |
parents | f937feb72734 |
children |
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/********************************************************************************************************* * Software License Agreement (BSD License) * * Author: Sebastien Decugis <sdecugis@freediameter.net> * * * * Copyright (c) 2013, WIDE Project and NICT * * All rights reserved. * * * * Redistribution and use of this software in source and binary forms, with or without modification, are * * permitted provided that the following conditions are met: * * * * * Redistributions of source code must retain the above * * copyright notice, this list of conditions and the * * following disclaimer. * * * * * Redistributions in binary form must reproduce the above * * copyright notice, this list of conditions and the * * following disclaimer in the documentation and/or other * * materials provided with the distribution. * * * * * Neither the name of the WIDE Project or NICT nor the * * names of its contributors may be used to endorse or * * promote products derived from this software without * * specific prior written permission of WIDE Project and * * NICT. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *********************************************************************************************************/ #include "fdcore-internal.h" /* Delay for garbage collection of expired peers, in seconds */ #define GC_TIME 120 static pthread_t exp_thr = (pthread_t)NULL; static pthread_t gc_thr = (pthread_t)NULL; static struct fd_list exp_list = FD_LIST_INITIALIZER( exp_list ); static pthread_cond_t exp_cnd = PTHREAD_COND_INITIALIZER; static pthread_mutex_t exp_mtx = PTHREAD_MUTEX_INITIALIZER; static void * gc_th_fct(void * arg) { fd_log_threadname ( "Peers/garb. col." ); TRACE_ENTRY( "%p", arg ); do { struct fd_list * li, purge = FD_LIST_INITIALIZER(purge); sleep(GC_TIME); /* sleep is a cancellation point */ /* Now check in the peers list if any peer can be deleted */ CHECK_FCT_DO( pthread_rwlock_wrlock(&fd_g_peers_rw), goto error ); for (li = fd_g_peers.next; li != &fd_g_peers; li = li->next) { struct fd_peer * peer = (struct fd_peer *)li->o; if (fd_peer_getstate(peer) != STATE_ZOMBIE) continue; if (peer->p_hdr.info.config.pic_flags.persist == PI_PRST_ALWAYS) continue; /* This peer was not supposed to terminate, keep it in the list for debug */ /* Ok, the peer was expired, let's remove it */ li = li->prev; /* to avoid breaking the loop */ fd_list_unlink(&peer->p_hdr.chain); fd_list_insert_before(&purge, &peer->p_hdr.chain); } CHECK_FCT_DO( pthread_rwlock_unlock(&fd_g_peers_rw), goto error ); /* Now delete peers that are in the purge list */ while (!FD_IS_LIST_EMPTY(&purge)) { struct fd_peer * peer = (struct fd_peer *)(purge.next->o); fd_list_unlink(&peer->p_hdr.chain); TRACE_DEBUG(INFO, "Garbage Collect: delete zombie peer '%s'", peer->p_hdr.info.pi_diamid); CHECK_FCT_DO( fd_peer_free(&peer), /* Continue... what else to do ? */ ); } } while (1); error: TRACE_DEBUG(INFO, "An error occurred in peers module! GC thread is terminating..."); ASSERT(0); CHECK_FCT_DO(fd_core_shutdown(), ); return NULL; } static void * exp_th_fct(void * arg) { fd_log_threadname ( "Peers/expire" ); TRACE_ENTRY( "%p", arg ); CHECK_POSIX_DO( pthread_mutex_lock(&exp_mtx), { ASSERT(0); } ); pthread_cleanup_push( fd_cleanup_mutex, &exp_mtx ); do { struct timespec now; struct fd_peer * first; /* Check if there are expiring peers available */ if (FD_IS_LIST_EMPTY(&exp_list)) { /* Just wait for a change or cancelation */ CHECK_POSIX_DO( pthread_cond_wait( &exp_cnd, &exp_mtx ), { ASSERT(0); } ); /* Restart the loop on wakeup */ continue; } /* Get the pointer to the peer that expires first */ first = (struct fd_peer *)(exp_list.next->o); ASSERT( CHECK_PEER(first) ); /* Get the current time */ CHECK_SYS_DO( clock_gettime(CLOCK_REALTIME, &now), { ASSERT(0); } ); /* If first peer is not expired, we just wait until it happens */ if ( TS_IS_INFERIOR( &now, &first->p_exp_timer ) ) { CHECK_POSIX_DO2( pthread_cond_timedwait( &exp_cnd, &exp_mtx, &first->p_exp_timer ), ETIMEDOUT, /* ETIMEDOUT is a normal return value, continue */, /* on other error, */ { ASSERT(0); } ); /* on wakeup, loop */ continue; } /* Now, the first peer in the list is expired; signal it */ fd_list_unlink( &first->p_expiry ); CHECK_FCT_DO( fd_event_send(first->p_events, FDEVP_TERMINATE, 0, "DO_NOT_WANT_TO_TALK_TO_YOU"), break ); } while (1); pthread_cleanup_pop( 1 ); TRACE_DEBUG(INFO, "An error occurred in peers module! Expiry thread is terminating..."); CHECK_FCT_DO(fd_core_shutdown(), ); return NULL; } /* Initialize peers expiry mechanism */ int fd_p_expi_init(void) { TRACE_ENTRY(); CHECK_FCT( pthread_create( &exp_thr, NULL, exp_th_fct, NULL ) ); CHECK_FCT( pthread_create( &gc_thr, NULL, gc_th_fct, NULL ) ); return 0; } /* Finish peers expiry mechanism */ int fd_p_expi_fini(void) { CHECK_FCT_DO( fd_thr_term(&exp_thr), ); CHECK_POSIX( pthread_mutex_lock(&exp_mtx) ); while (!FD_IS_LIST_EMPTY(&exp_list)) { struct fd_peer * peer = (struct fd_peer *)(exp_list.next->o); fd_list_unlink(&peer->p_expiry ); } CHECK_POSIX( pthread_mutex_unlock(&exp_mtx) ); CHECK_FCT_DO( fd_thr_term(&gc_thr), ); return 0; } /* Add / requeue a peer in the expiry list */ int fd_p_expi_update(struct fd_peer * peer ) { TRACE_ENTRY("%p", peer); CHECK_PARAMS( CHECK_PEER(peer) ); CHECK_POSIX( pthread_mutex_lock(&exp_mtx) ); fd_list_unlink(&peer->p_expiry ); /* if peer expires */ if (peer->p_hdr.info.config.pic_flags.exp) { struct fd_list * li; /* update the p_exp_timer value */ CHECK_SYS_DO( clock_gettime(CLOCK_REALTIME, &peer->p_exp_timer), { ASSERT(0); } ); peer->p_exp_timer.tv_sec += peer->p_hdr.info.config.pic_lft; /* add to the expiry list in appropriate position (probably around the end) */ for (li = exp_list.prev; li != &exp_list; li = li->prev) { struct fd_peer * p = (struct fd_peer *)(li->o); if (TS_IS_INFERIOR( &p->p_exp_timer, &peer->p_exp_timer ) ) break; } fd_list_insert_after(li, &peer->p_expiry); /* signal the expiry thread if we added in first position */ if (li == &exp_list) { CHECK_POSIX( pthread_cond_signal(&exp_cnd) ); } } CHECK_POSIX( pthread_mutex_unlock(&exp_mtx) ); return 0; }