Mercurial > hg > freeDiameter
view libfdcore/events.c @ 1511:528418d4b080
dict_dcca_3gpp; more comments for fixes
Use "Fix:" in a comment where an AVP has changed
from a previous freeDiameter release,
or differs from the 3GPP standard definition.
Document AVPs changed since freeDiameter 1.4.0.
author | Luke Mewburn <luke@mewburn.net> |
---|---|
date | Tue, 07 Apr 2020 15:43:18 +1000 |
parents | 6a1042d8075b |
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" /* Events are a subset of fifo queues, with a known type */ int fd_event_send(struct fifo *queue, int code, size_t datasz, void * data) { struct fd_event * ev; CHECK_MALLOC( ev = malloc(sizeof(struct fd_event)) ); ev->code = code; ev->size = datasz; ev->data = data; CHECK_FCT( fd_fifo_post(queue, &ev) ); return 0; } int fd_event_get(struct fifo *queue, int *code, size_t *datasz, void ** data) { struct fd_event * ev; CHECK_FCT( fd_fifo_get(queue, &ev) ); if (code) *code = ev->code; if (datasz) *datasz = ev->size; if (data) *data = ev->data; free(ev); return 0; } int fd_event_timedget(struct fifo *queue, struct timespec * timeout, int timeoutcode, int *code, size_t *datasz, void ** data) { struct fd_event * ev; int ret = 0; ret = fd_fifo_timedget(queue, &ev, timeout); if (ret == ETIMEDOUT) { if (code) *code = timeoutcode; if (datasz) *datasz = 0; if (data) *data = NULL; } else { CHECK_FCT( ret ); if (code) *code = ev->code; if (datasz) *datasz = ev->size; if (data) *data = ev->data; free(ev); } return 0; } void fd_event_destroy(struct fifo **queue, void (*free_cb)(void * data)) { struct fd_event * ev; /* Purge all events, and free the associated data if any */ while (fd_fifo_tryget( *queue, &ev ) == 0) { (*free_cb)(ev->data); free(ev); } CHECK_FCT_DO( fd_fifo_del(queue), /* continue */ ); return ; } const char * fd_ev_str(int event) { switch (event) { #define case_str( _val )\ case _val : return #_val case_str(FDEV_TERMINATE_INT); case_str(FDEV_TRIGGER); default: TRACE_DEBUG(FULL, "Unknown event : %d", event); return "Unknown event"; } } /**********************************************************************/ /* Trigged events */ /* This allows extensions to register for / send triggers to other extensions */ /* It is used for example for users interactions (through signals or ...) */ /* Because the number of triggers is not expected to grow, we use a simple ordered chained list */ static pthread_rwlock_t trig_rwl = PTHREAD_RWLOCK_INITIALIZER; static struct fd_list trig_list = FD_LIST_INITIALIZER(trig_list); /* The list of triggers ordered by trigger value */ struct trig_item { struct fd_list chain; int trig_value; const char * trig_module; void (*cb)(void); }; /* Add a new entry in the trigger list */ int fd_event_trig_regcb(int trigger_val, const char * module, void (*cb)(void)) { struct trig_item * ti; struct fd_list * li; TRACE_ENTRY("%d %p %p", trigger_val, module, cb); CHECK_PARAMS( trigger_val && cb ); /* Create a new trig_item */ CHECK_MALLOC( ti = malloc(sizeof(struct trig_item)) ); memset(ti, 0, sizeof(struct trig_item)); fd_list_init(&ti->chain, ti); ti->trig_value = trigger_val; ti->trig_module = module; ti->cb = cb; /* Now insert in the list */ CHECK_POSIX( pthread_rwlock_wrlock(&trig_rwl) ); for (li = trig_list.next; li != &trig_list; li = li->next) { struct trig_item *t = li->o; if (t->trig_value >= trigger_val) break; } fd_list_insert_before(li, &ti->chain); CHECK_POSIX( pthread_rwlock_unlock(&trig_rwl) ); return 0; } DECLARE_FD_DUMP_PROTOTYPE(fd_event_trig_dump) { struct fd_list * li; FD_DUMP_HANDLE_OFFSET(); CHECK_POSIX_DO( pthread_rwlock_rdlock(&trig_rwl), ); for (li = trig_list.next; li != &trig_list; li = li->next) { struct trig_item *t = li->o; CHECK_MALLOC_DO( fd_dump_extend( FD_DUMP_STD_PARAMS, "{signal:%d}'%s'->%p ", t->trig_value, t->trig_module, t->cb), break); } CHECK_POSIX_DO( pthread_rwlock_unlock(&trig_rwl), ); return *buf; } static void *call_cb_detached(void * arg) { void (*cb)(void) = arg; fd_log_threadname("Trig'd callback thread"); TRACE_ENTRY("%p", arg); (*cb)(); TRACE_DEBUG(ANNOYING, "Callback %p completed", cb); return NULL; } int fd_event_trig_call_cb(int trigger_val) { struct fd_list * li; pthread_attr_t detached; pthread_t th; CHECK_POSIX( pthread_attr_init(&detached) ); CHECK_POSIX( pthread_attr_setdetachstate(&detached, PTHREAD_CREATE_DETACHED) ); CHECK_POSIX( pthread_rwlock_rdlock(&trig_rwl) ); for (li = trig_list.next; li != &trig_list; li = li->next) { struct trig_item *t = li->o; if (t->trig_value == trigger_val) { TRACE_DEBUG(FULL, "Trigger %d: Calling %p in %s", t->trig_value, t->cb, t->trig_module); CHECK_POSIX_DO( pthread_create( &th, &detached, call_cb_detached, t->cb ), break ); } if (t->trig_value > trigger_val) break; } CHECK_POSIX( pthread_rwlock_unlock(&trig_rwl) ); return 0; } int fd_event_trig_fini(void) { TRACE_ENTRY(""); CHECK_POSIX( pthread_rwlock_wrlock(&trig_rwl) ); while (!FD_IS_LIST_EMPTY(&trig_list)) { struct fd_list * li = trig_list.next; fd_list_unlink(li); free(li); } CHECK_POSIX( pthread_rwlock_unlock(&trig_rwl) ); return 0; }