mirror of
https://github.com/signalwire/freeswitch.git
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freetdm: more core state refactoring, still untested
This commit is contained in:
Moises Silva
parent
82297de753
commit
4268bf84b0
@ -73,6 +73,7 @@ libfreetdm_la_SOURCES = \
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$(SRC)/hashtable.c \
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$(SRC)/hashtable_itr.c \
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$(SRC)/ftdm_io.c \
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$(SRC)/ftdm_state.c \
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$(SRC)/ftdm_queue.c \
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$(SRC)/ftdm_sched.c \
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$(SRC)/ftdm_call_utils.c \
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458
libs/freetdm/src/ftdm_state.c
Normal file
458
libs/freetdm/src/ftdm_state.c
Normal file
@ -0,0 +1,458 @@
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/*
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* Copyright (c) 2010, Sangoma Technologies
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* Moises Silva <moy@sangoma.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of the original author; nor the names of any contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "private/ftdm_core.h"
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FTDM_ENUM_NAMES(CHANNEL_STATE_NAMES, CHANNEL_STATE_STRINGS)
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FTDM_STR2ENUM(ftdm_str2ftdm_channel_state, ftdm_channel_state2str, ftdm_channel_state_t, CHANNEL_STATE_NAMES, FTDM_CHANNEL_STATE_INVALID)
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/* This function is only needed for boost and we should get rid of it at the next refactoring */
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FT_DECLARE(ftdm_status_t) ftdm_channel_init(ftdm_channel_t *fchan)
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{
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ftdm_channel_lock(fchan);
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if (fchan->init_state != FTDM_CHANNEL_STATE_DOWN) {
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ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, fchan, fchan->init_state, 1);
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fchan->init_state = FTDM_CHANNEL_STATE_DOWN;
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}
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ftdm_channel_unlock(fchan);
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return FTDM_SUCCESS;
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}
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FT_DECLARE(ftdm_status_t) _ftdm_channel_complete_state(const char *file, const char *func, int line, ftdm_channel_t *fchan)
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{
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uint8_t hindex = 0;
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ftdm_channel_state_t state = fchan->state;
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if (fchan->state_status == FTDM_STATE_STATUS_COMPLETED) {
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return FTDM_SUCCESS;
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}
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if (state == FTDM_CHANNEL_STATE_PROGRESS) {
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ftdm_set_flag(fchan, FTDM_CHANNEL_PROGRESS);
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} else if (state == FTDM_CHANNEL_STATE_UP) {
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ftdm_set_flag(fchan, FTDM_CHANNEL_PROGRESS);
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ftdm_set_flag(fchan, FTDM_CHANNEL_MEDIA);
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ftdm_set_flag(fchan, FTDM_CHANNEL_ANSWERED);
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} else if (state == FTDM_CHANNEL_STATE_PROGRESS_MEDIA) {
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ftdm_set_flag(fchan, FTDM_CHANNEL_PROGRESS);
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ftdm_set_flag(fchan, FTDM_CHANNEL_MEDIA);
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}
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/* if there is a pending ack for an indication */
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if (ftdm_test_flag(fchan, FTDM_CHANNEL_IND_ACK_PENDING)) {
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ftdm_ack_indication(fchan, fchan->indication, FTDM_SUCCESS);
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ftdm_clear_flag(fchan, FTDM_CHANNEL_IND_ACK_PENDING);
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}
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ftdm_log_chan_ex(fchan, file, func, line, FTDM_LOG_LEVEL_DEBUG, "Completed state change from %s to %s\n", ftdm_channel_state2str(fchan->state), ftdm_channel_state2str(state));
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hindex = (fchan->hindex == 0) ? (ftdm_array_len(fchan->history) - 1) : (hindex - 1);
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ftdm_assert(!fchan->history[hindex].end_time, "End time should be zero!\n");
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fchan->history[hindex].end_time = ftdm_current_time_in_ms();
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/* FIXME: broadcast condition to wake up anyone waiting on state completion if the channel
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* is blocking (FTDM_CHANNEL_NONBLOCK is not set) */
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return FTDM_SUCCESS;
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}
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FT_DECLARE(ftdm_status_t) _ftdm_set_state(const char *file, const char *func, int line,
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ftdm_channel_t *fchan, ftdm_channel_state_t state)
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{
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if (fchan->state_status == FTDM_STATE_STATUS_NEW) {
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/* the current state is new, setting a new state from a signaling module
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when the current state is new is equivalent to implicitly acknowledging
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the current state */
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_ftdm_channel_complete_state(file, func, line, fchan);
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}
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return ftdm_channel_set_state(file, func, line, fchan, state, 0);
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}
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static int ftdm_parse_state_map(ftdm_channel_t *ftdmchan, ftdm_channel_state_t state, ftdm_state_map_t *state_map)
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{
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int x = 0, ok = 0;
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ftdm_state_direction_t direction = ftdm_test_flag(ftdmchan, FTDM_CHANNEL_OUTBOUND) ? ZSD_OUTBOUND : ZSD_INBOUND;
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for(x = 0; x < FTDM_MAP_NODE_SIZE; x++) {
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int i = 0, proceed = 0;
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if (!state_map->nodes[x].type) {
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break;
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}
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if (state_map->nodes[x].direction != direction) {
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continue;
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}
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if (state_map->nodes[x].check_states[0] == FTDM_ANY_STATE) {
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proceed = 1;
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} else {
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for(i = 0; i < FTDM_MAP_MAX; i++) {
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if (state_map->nodes[x].check_states[i] == ftdmchan->state) {
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proceed = 1;
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break;
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}
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}
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}
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if (!proceed) {
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continue;
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}
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for(i = 0; i < FTDM_MAP_MAX; i++) {
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ok = (state_map->nodes[x].type == ZSM_ACCEPTABLE);
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if (state_map->nodes[x].states[i] == FTDM_END) {
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break;
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}
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if (state_map->nodes[x].states[i] == state) {
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ok = !ok;
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goto end;
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}
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}
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}
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end:
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return ok;
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}
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/* this function MUST be called with the channel lock held. If waitrq == 1, the channel will be unlocked/locked (never call it with waitrq == 1 with an lock recursivity > 1) */
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#define DEFAULT_WAIT_TIME 1000
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FT_DECLARE(ftdm_status_t) ftdm_channel_set_state(const char *file, const char *func, int line, ftdm_channel_t *ftdmchan, ftdm_channel_state_t state, int waitrq)
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{
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int ok = 1;
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int waitms = DEFAULT_WAIT_TIME;
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if (!ftdm_test_flag(ftdmchan, FTDM_CHANNEL_READY)) {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_ERROR, "Ignored state change request from %s to %s, the channel is not ready\n",
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ftdm_channel_state2str(ftdmchan->state), ftdm_channel_state2str(state));
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return FTDM_FAIL;
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}
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if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_STATE_CHANGE)) {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_ERROR, "Ignored state change request from %s to %s, the previous state change has not been processed yet\n",
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ftdm_channel_state2str(ftdmchan->state), ftdm_channel_state2str(state));
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return FTDM_FAIL;
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}
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if (ftdmchan->state == state) {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_WARNING, "Why bother changing state from %s to %s\n", ftdm_channel_state2str(ftdmchan->state), ftdm_channel_state2str(state));
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return FTDM_FAIL;
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}
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if (ftdmchan->span->state_map) {
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ok = ftdm_parse_state_map(ftdmchan, state, ftdmchan->span->state_map);
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goto end;
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}
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/* basic core state validation (by-passed if the signaling module provides a state_map) */
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switch(ftdmchan->state) {
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case FTDM_CHANNEL_STATE_HANGUP:
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case FTDM_CHANNEL_STATE_TERMINATING:
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{
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ok = 0;
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switch(state) {
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case FTDM_CHANNEL_STATE_DOWN:
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case FTDM_CHANNEL_STATE_BUSY:
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case FTDM_CHANNEL_STATE_RESTART:
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ok = 1;
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break;
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default:
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break;
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}
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}
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break;
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case FTDM_CHANNEL_STATE_UP:
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{
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ok = 1;
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switch(state) {
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case FTDM_CHANNEL_STATE_PROGRESS:
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case FTDM_CHANNEL_STATE_PROGRESS_MEDIA:
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case FTDM_CHANNEL_STATE_RING:
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ok = 0;
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break;
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default:
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break;
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}
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}
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break;
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case FTDM_CHANNEL_STATE_DOWN:
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{
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ok = 0;
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switch(state) {
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case FTDM_CHANNEL_STATE_DIALTONE:
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case FTDM_CHANNEL_STATE_COLLECT:
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case FTDM_CHANNEL_STATE_DIALING:
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case FTDM_CHANNEL_STATE_RING:
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case FTDM_CHANNEL_STATE_PROGRESS_MEDIA:
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case FTDM_CHANNEL_STATE_PROGRESS:
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case FTDM_CHANNEL_STATE_IDLE:
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case FTDM_CHANNEL_STATE_GET_CALLERID:
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case FTDM_CHANNEL_STATE_GENRING:
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ok = 1;
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break;
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default:
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break;
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}
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}
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break;
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case FTDM_CHANNEL_STATE_BUSY:
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{
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switch(state) {
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case FTDM_CHANNEL_STATE_UP:
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ok = 0;
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break;
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default:
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break;
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}
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}
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break;
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case FTDM_CHANNEL_STATE_RING:
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{
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switch(state) {
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case FTDM_CHANNEL_STATE_UP:
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ok = 1;
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break;
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default:
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break;
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}
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}
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break;
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default:
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break;
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}
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end:
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if (ok) {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_DEBUG, "Changed state from %s to %s\n", ftdm_channel_state2str(ftdmchan->state), ftdm_channel_state2str(state));
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ftdmchan->last_state = ftdmchan->state;
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ftdmchan->state = state;
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ftdmchan->state_status = FTDM_STATE_STATUS_NEW;
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ftdmchan->history[ftdmchan->hindex].file = file;
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ftdmchan->history[ftdmchan->hindex].func = func;
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ftdmchan->history[ftdmchan->hindex].line = line;
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ftdmchan->history[ftdmchan->hindex].state = ftdmchan->state;
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ftdmchan->history[ftdmchan->hindex].last_state = ftdmchan->last_state;
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ftdmchan->history[ftdmchan->hindex].time = ftdm_current_time_in_ms();
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ftdmchan->history[ftdmchan->hindex].end_time = 0;
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ftdmchan->hindex++;
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if (ftdmchan->hindex == ftdm_array_len(ftdmchan->history)) {
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ftdmchan->hindex = 0;
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}
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ftdm_set_flag(ftdmchan, FTDM_CHANNEL_STATE_CHANGE);
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ftdm_mutex_lock(ftdmchan->span->mutex);
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ftdm_set_flag(ftdmchan->span, FTDM_SPAN_STATE_CHANGE);
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if (ftdmchan->span->pendingchans) {
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ftdm_queue_enqueue(ftdmchan->span->pendingchans, ftdmchan);
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}
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ftdm_mutex_unlock(ftdmchan->span->mutex);
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} else {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_WARNING, "VETO state change from %s to %s\n", ftdm_channel_state2str(ftdmchan->state), ftdm_channel_state2str(state));
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goto done;
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}
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if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_NONBLOCK)) {
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/* the channel should not block waiting for state processing */
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goto done;
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}
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/* there is an inherent race here between set and check of the change flag but we do not care because
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* the flag should never last raised for more than a few ms for any state change */
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while (waitrq && waitms > 0) {
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/* give a chance to the signaling stack to process it */
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ftdm_mutex_unlock(ftdmchan->mutex);
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ftdm_sleep(10);
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waitms -= 10;
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ftdm_mutex_lock(ftdmchan->mutex);
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/* if the flag is no longer set, the state change was processed (or is being processed) */
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if (!ftdm_test_flag(ftdmchan, FTDM_CHANNEL_STATE_CHANGE)) {
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break;
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}
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/* if the state is no longer what we set, the state change was
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* obviously processed (and the current state change flag is for other state change) */
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if (ftdmchan->state != state) {
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break;
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}
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}
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if (waitms <= 0) {
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ftdm_log_chan_ex(ftdmchan, file, func, line, FTDM_LOG_LEVEL_WARNING, "state change from %s to %s was most likely not processed after aprox %dms\n",
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ftdm_channel_state2str(ftdmchan->last_state), ftdm_channel_state2str(state), DEFAULT_WAIT_TIME);
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ok = 0;
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}
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done:
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return ok ? FTDM_SUCCESS : FTDM_FAIL;
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}
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FT_DECLARE(int) ftdm_channel_get_state(const ftdm_channel_t *ftdmchan)
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{
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int state;
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ftdm_channel_lock(ftdmchan);
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state = ftdmchan->state;
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ftdm_channel_unlock(ftdmchan);
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return state;
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}
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FT_DECLARE(const char *) ftdm_channel_get_state_str(const ftdm_channel_t *ftdmchan)
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{
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const char *state;
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ftdm_channel_lock(ftdmchan);
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state = ftdm_channel_state2str(ftdmchan->state);
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ftdm_channel_unlock(ftdmchan);
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return state;
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}
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FT_DECLARE(int) ftdm_channel_get_last_state(const ftdm_channel_t *ftdmchan)
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{
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int last_state;
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ftdm_channel_lock(ftdmchan);
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last_state = ftdmchan->last_state;
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ftdm_channel_unlock(ftdmchan);
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return last_state;
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}
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FT_DECLARE(const char *) ftdm_channel_get_last_state_str(const ftdm_channel_t *ftdmchan)
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{
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const char *state;
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ftdm_channel_lock(ftdmchan);
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state = ftdm_channel_state2str(ftdmchan->last_state);
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ftdm_channel_unlock(ftdmchan);
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return state;
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}
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static void write_history_entry(const ftdm_channel_t *fchan, ftdm_stream_handle_t *stream, int i, ftdm_time_t *prevtime)
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{
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char func[255];
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char line[255];
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char states[255];
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const char *filename = NULL;
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snprintf(states, sizeof(states), "%-5.15s => %-5.15s", ftdm_channel_state2str(fchan->history[i].last_state), ftdm_channel_state2str(fchan->history[i].state));
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snprintf(func, sizeof(func), "[%s]", fchan->history[i].func);
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filename = strrchr(fchan->history[i].file, *FTDM_PATH_SEPARATOR);
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if (!filename) {
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filename = fchan->history[i].file;
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} else {
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filename++;
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}
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if (!(*prevtime)) {
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*prevtime = fchan->history[i].time;
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}
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snprintf(line, sizeof(func), "[%s:%d]", filename, fchan->history[i].line);
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stream->write_function(stream, "%-30.30s %-30.30s %-30.30s %lums\n", states, func, line, (fchan->history[i].time - *prevtime));
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*prevtime = fchan->history[i].time;
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}
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FT_DECLARE(char *) ftdm_channel_get_history_str(const ftdm_channel_t *fchan)
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{
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uint8_t i = 0;
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ftdm_time_t currtime = 0;
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ftdm_time_t prevtime = 0;
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ftdm_stream_handle_t stream = { 0 };
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FTDM_STANDARD_STREAM(stream);
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if (!fchan->history[0].file) {
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stream.write_function(&stream, "-- No state history --\n");
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return stream.data;
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}
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stream.write_function(&stream, "%-30.30s %-30.30s %-30.30s %s",
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"-- States --", "-- Function --", "-- Location --", "-- Time Offset --\n");
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for (i = fchan->hindex; i < ftdm_array_len(fchan->history); i++) {
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if (!fchan->history[i].file) {
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break;
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}
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write_history_entry(fchan, &stream, i, &prevtime);
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}
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for (i = 0; i < fchan->hindex; i++) {
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write_history_entry(fchan, &stream, i, &prevtime);
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}
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currtime = ftdm_current_time_in_ms();
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|
||||
stream.write_function(&stream, "\nTime since last state change: %lums\n", (currtime - prevtime));
|
||||
|
||||
return stream.data;
|
||||
}
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_advance_states(ftdm_channel_t *fchan, ftdm_channel_state_processor_t state_processor)
|
||||
{
|
||||
ftdm_channel_state_t state;
|
||||
|
||||
ftdm_channel_lock(fchan);
|
||||
while (fchan->state_status == FTDM_STATE_STATUS_NEW) {
|
||||
state = fchan->state;
|
||||
state_processor(fchan);
|
||||
if (state == fchan->state) {
|
||||
/* if the state did not change, the state status must go to PROCESSED
|
||||
* otherwise we don't touch it since is a new state and the old state was
|
||||
* already completed implicitly by the state_processor() function via some internal
|
||||
* call to ftdm_set_state() */
|
||||
fchan->state_status = FTDM_STATE_STATUS_PROCESSED;
|
||||
}
|
||||
}
|
||||
ftdm_channel_unlock(fchan);
|
||||
return FTDM_SUCCESS;
|
||||
}
|
||||
|
||||
FT_DECLARE(int) ftdm_check_state_all(ftdm_span_t *span, ftdm_channel_state_t state)
|
||||
{
|
||||
uint32_t j;
|
||||
for(j = 1; j <= span->chan_count; j++) {
|
||||
if (span->channels[j]->state != state || ftdm_test_flag(span->channels[j], FTDM_CHANNEL_STATE_CHANGE)) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* For Emacs:
|
||||
* Local Variables:
|
||||
* mode:c
|
||||
* indent-tabs-mode:t
|
||||
* tab-width:4
|
||||
* c-basic-offset:4
|
||||
* End:
|
||||
* For VIM:
|
||||
* vim:set softtabstop=4 shiftwidth=4 tabstop=4:
|
||||
*/
|
||||
@ -440,6 +440,7 @@ typedef struct {
|
||||
* This is used during incoming calls when you want to request the signaling stack
|
||||
* to notify about indications occurring locally. See ftdm_channel_call_indicate for more info */
|
||||
typedef enum {
|
||||
FTDM_CHANNEL_INDICATE_NONE,
|
||||
FTDM_CHANNEL_INDICATE_RINGING,
|
||||
FTDM_CHANNEL_INDICATE_PROCEED,
|
||||
FTDM_CHANNEL_INDICATE_PROGRESS,
|
||||
@ -449,7 +450,7 @@ typedef enum {
|
||||
FTDM_CHANNEL_INDICATE_ANSWER,
|
||||
FTDM_CHANNEL_INDICATE_INVALID,
|
||||
} ftdm_channel_indication_t;
|
||||
#define INDICATION_STRINGS "RINGING", "PROCEED", "PROGRESS", "PROGRESS_MEDIA", "BUSY", "ANSWER", "INVALID"
|
||||
#define INDICATION_STRINGS "NONE", "RINGING", "PROCEED", "PROGRESS", "PROGRESS_MEDIA", "BUSY", "ANSWER", "INVALID"
|
||||
|
||||
/*! \brief Move from string to ftdm_channel_indication_t and viceversa */
|
||||
FTDM_STR2ENUM_P(ftdm_str2channel_indication, ftdm_channel_indication2str, ftdm_channel_indication_t)
|
||||
|
||||
@ -192,17 +192,6 @@ extern "C" {
|
||||
|
||||
#define ftdm_clear_sflag_locked(obj, flag) assert(obj->mutex != NULL); ftdm_mutex_lock(obj->mutex); (obj)->sflags &= ~(flag); ftdm_mutex_unlock(obj->mutex);
|
||||
|
||||
#define ftdm_set_state(obj, s) ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s, 0); \
|
||||
|
||||
#define ftdm_set_state_locked(obj, s) \
|
||||
do { \
|
||||
ftdm_channel_lock(obj); \
|
||||
ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s, 0); \
|
||||
ftdm_channel_unlock(obj); \
|
||||
} while(0);
|
||||
|
||||
#define ftdm_set_state_r(obj, s, r) r = ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s, 0);
|
||||
|
||||
#ifdef _MSC_VER
|
||||
/* The while(0) below throws a conditional expression is constant warning */
|
||||
#pragma warning(disable:4127)
|
||||
@ -363,15 +352,6 @@ typedef struct {
|
||||
ftdm_mutex_t *mutex;
|
||||
} ftdm_dtmf_debug_t;
|
||||
|
||||
typedef struct {
|
||||
const char *file;
|
||||
const char *func;
|
||||
int line;
|
||||
ftdm_channel_state_t state;
|
||||
ftdm_channel_state_t last_state;
|
||||
ftdm_time_t time;
|
||||
} ftdm_channel_history_entry_t;
|
||||
|
||||
typedef enum {
|
||||
FTDM_IOSTATS_ERROR_CRC = (1 << 0),
|
||||
FTDM_IOSTATS_ERROR_FRAME = (1 << 1),
|
||||
@ -424,9 +404,11 @@ struct ftdm_channel {
|
||||
uint32_t native_interval;
|
||||
uint32_t packet_len;
|
||||
ftdm_channel_state_t state;
|
||||
ftdm_state_status_t state_status;
|
||||
ftdm_channel_state_t last_state;
|
||||
ftdm_channel_state_t init_state;
|
||||
ftdm_channel_history_entry_t history[10];
|
||||
ftdm_channel_indication_t indication;
|
||||
ftdm_state_history_entry_t history[10];
|
||||
uint8_t hindex;
|
||||
ftdm_mutex_t *mutex;
|
||||
teletone_dtmf_detect_state_t dtmf_detect;
|
||||
@ -572,9 +554,6 @@ FT_DECLARE(ftdm_status_t) ftdm_fsk_data_add_checksum(ftdm_fsk_data_state_t *stat
|
||||
FT_DECLARE(ftdm_status_t) ftdm_fsk_data_add_sdmf(ftdm_fsk_data_state_t *state, const char *date, char *number);
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_send_fsk_data(ftdm_channel_t *ftdmchan, ftdm_fsk_data_state_t *fsk_data, float db_level);
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_set_state(const char *file, const char *func, int line,
|
||||
ftdm_channel_t *ftdmchan, ftdm_channel_state_t state, int wait);
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_span_load_tones(ftdm_span_t *span, const char *mapname);
|
||||
FT_DECLARE(ftdm_time_t) ftdm_current_time_in_ms(void);
|
||||
|
||||
@ -589,8 +568,6 @@ FT_DECLARE(void) print_hex_bytes(uint8_t *data, ftdm_size_t dlen, char *buf, ftd
|
||||
FT_DECLARE_NONSTD(int) ftdm_hash_equalkeys(void *k1, void *k2);
|
||||
FT_DECLARE_NONSTD(uint32_t) ftdm_hash_hashfromstring(void *ky);
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_complete_state(ftdm_channel_t *ftdmchan);
|
||||
|
||||
FT_DECLARE(int) ftdm_load_modules(void);
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_unload_modules(void);
|
||||
@ -707,30 +684,6 @@ static __inline__ void ftdm_abort(void)
|
||||
#endif
|
||||
}
|
||||
|
||||
static __inline__ void ftdm_set_state_all(ftdm_span_t *span, ftdm_channel_state_t state)
|
||||
{
|
||||
uint32_t j;
|
||||
ftdm_mutex_lock(span->mutex);
|
||||
for(j = 1; j <= span->chan_count; j++) {
|
||||
if (!FTDM_IS_DCHAN(span->channels[j])) {
|
||||
ftdm_set_state_locked((span->channels[j]), state);
|
||||
}
|
||||
}
|
||||
ftdm_mutex_unlock(span->mutex);
|
||||
}
|
||||
|
||||
static __inline__ int ftdm_check_state_all(ftdm_span_t *span, ftdm_channel_state_t state)
|
||||
{
|
||||
uint32_t j;
|
||||
for(j = 1; j <= span->chan_count; j++) {
|
||||
if (span->channels[j]->state != state || ftdm_test_flag(span->channels[j], FTDM_CHANNEL_STATE_CHANGE)) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static __inline__ int16_t ftdm_saturated_add(int16_t sample1, int16_t sample2)
|
||||
{
|
||||
int addres;
|
||||
|
||||
218
libs/freetdm/src/include/private/ftdm_state.h
Normal file
218
libs/freetdm/src/include/private/ftdm_state.h
Normal file
@ -0,0 +1,218 @@
|
||||
/*
|
||||
* Copyright (c) 2010, Sangoma Technologies
|
||||
* Moises Silva <moy@sangoma.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use 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 original author; nor the names of any contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __FTDM_STATE_H__
|
||||
#define __FTDM_STATE_H__
|
||||
|
||||
/*! \file
|
||||
* \brief State handling definitions
|
||||
* \note Most, if not all of the state handling functions assume you have a lock acquired. Touching the channel
|
||||
* state is a sensitive matter that requires checks and careful thought and is typically a process that
|
||||
* is not encapsulated within a single function, therefore the lock must be explicitly acquired by the
|
||||
* caller (most of the time, signaling modules), process states, set a new state and process it, and
|
||||
* finally unlock the channel. See docs/locking.txt fore more info
|
||||
*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
typedef enum {
|
||||
FTDM_CHANNEL_STATE_DOWN,
|
||||
FTDM_CHANNEL_STATE_HOLD,
|
||||
FTDM_CHANNEL_STATE_SUSPENDED,
|
||||
FTDM_CHANNEL_STATE_DIALTONE,
|
||||
FTDM_CHANNEL_STATE_COLLECT,
|
||||
FTDM_CHANNEL_STATE_RING,
|
||||
FTDM_CHANNEL_STATE_RINGING,
|
||||
FTDM_CHANNEL_STATE_BUSY,
|
||||
FTDM_CHANNEL_STATE_ATTN,
|
||||
FTDM_CHANNEL_STATE_GENRING,
|
||||
FTDM_CHANNEL_STATE_DIALING,
|
||||
FTDM_CHANNEL_STATE_GET_CALLERID,
|
||||
FTDM_CHANNEL_STATE_CALLWAITING,
|
||||
FTDM_CHANNEL_STATE_RESTART,
|
||||
FTDM_CHANNEL_STATE_PROCEED,
|
||||
FTDM_CHANNEL_STATE_PROGRESS,
|
||||
FTDM_CHANNEL_STATE_PROGRESS_MEDIA,
|
||||
FTDM_CHANNEL_STATE_UP,
|
||||
FTDM_CHANNEL_STATE_IDLE,
|
||||
FTDM_CHANNEL_STATE_TERMINATING,
|
||||
FTDM_CHANNEL_STATE_CANCEL,
|
||||
FTDM_CHANNEL_STATE_HANGUP,
|
||||
FTDM_CHANNEL_STATE_HANGUP_COMPLETE,
|
||||
FTDM_CHANNEL_STATE_IN_LOOP,
|
||||
FTDM_CHANNEL_STATE_RESET,
|
||||
FTDM_CHANNEL_STATE_INVALID
|
||||
} ftdm_channel_state_t;
|
||||
#define CHANNEL_STATE_STRINGS "DOWN", "HOLD", "SUSPENDED", "DIALTONE", "COLLECT", \
|
||||
"RING", "RINGING", "BUSY", "ATTN", "GENRING", "DIALING", "GET_CALLERID", "CALLWAITING", \
|
||||
"RESTART", "PROCEED", "PROGRESS", "PROGRESS_MEDIA", "UP", "IDLE", "TERMINATING", "CANCEL", \
|
||||
"HANGUP", "HANGUP_COMPLETE", "IN_LOOP", "RESET", "INVALID"
|
||||
FTDM_STR2ENUM_P(ftdm_str2ftdm_channel_state, ftdm_channel_state2str, ftdm_channel_state_t)
|
||||
|
||||
typedef struct {
|
||||
const char *file;
|
||||
const char *func;
|
||||
int line;
|
||||
ftdm_channel_state_t state;
|
||||
ftdm_channel_state_t last_state;
|
||||
ftdm_time_t time;
|
||||
ftdm_time_t end_time;
|
||||
} ftdm_state_history_entry_t;
|
||||
|
||||
typedef ftdm_status_t (*ftdm_channel_state_processor_t)(ftdm_channel_t *fchan);
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_advance_states(ftdm_channel_t *fchan, ftdm_channel_state_processor_t processor);
|
||||
FT_DECLARE(ftdm_status_t) _ftdm_channel_complete_state(const char *file, const char *function, int line, ftdm_channel_t *fchan);
|
||||
#define ftdm_channel_complete_state(obj) _ftdm_channel_complete_state(__FILE__, __FUNCTION__, __LINE__, obj)
|
||||
FT_DECLARE(int) ftdm_check_state_all(ftdm_span_t *span, ftdm_channel_state_t state);
|
||||
|
||||
/*!
|
||||
* \brief Status of the current channel state
|
||||
* \note A given state goes thru several status (yes, states for the state!)
|
||||
* The order is always FTDM_STATE_STATUS_NEW -> FTDM_STATE_STATUS_PROCESSED -> FTDM_STATUS_COMPLETED
|
||||
* However, is possible to go from NEW -> COMPLETED directly when the signaling module explicitly changes
|
||||
* the state of the channel in the middle of processing the current state by calling the ftdm_set_state() API
|
||||
*
|
||||
* FTDM_STATE_STATUS_NEW -
|
||||
* Someone just set the state of the channel, either the signaling module or the user (implicitly through a call API).
|
||||
* This is accomplished by calling ftdm_channel_set_state() which changes the 'state' and 'last_state' memebers of
|
||||
* the ftdm_channel_t structure.
|
||||
*
|
||||
* FTDM_STATE_STATUS_PROCESSED -
|
||||
* The signaling module did something based on the new state.
|
||||
*
|
||||
* This is accomplished via ftdm_channel_advance_states()
|
||||
*
|
||||
* When ftdm_channel_advance_states(), at the very least, if the channel has its state in FTDM_STATE_STATUS_NEW, it
|
||||
* will move to FTDM_STATE_STATUS_PROCESSED, depending on what the signaling module does during the processing
|
||||
* the state may move to FTDM_STATE_STATUS_COMPLETED right after or wait for a signaling specific event to complete it.
|
||||
* It is also possible that more state transitions occur during the execution of ftdm_channel_advance_states() if one
|
||||
* state processing/completion leads to another state change, the function will not return until the chain of events
|
||||
* lead to a state that is not in FTDM_STATE_STATUS_NEW
|
||||
*
|
||||
* FTDM_STATE_STATUS_COMPLETED -
|
||||
* The signaling module completed the processing of the state and there is nothing further to be done for this state.
|
||||
*
|
||||
* This is accomplished either explicitly by the signaling module by calling ftdm_channel_complete_state() or by
|
||||
* the signaling module implicitly by trying to set the state of the channel to a new state via ftdm_set_state()
|
||||
*
|
||||
* When working with blocking channels (FTDM_CHANNEL_NONBLOCK flag not set), the user thread is signaled and unblocked
|
||||
* so it can continue.
|
||||
*
|
||||
* When a state moves to this status is also possible for a signal FTDM_SIGEVENT_INDICATION_COMPLETED to be delivered
|
||||
* by the core if the state change was associated to an indication requested by the user,
|
||||
*/
|
||||
typedef enum {
|
||||
FTDM_STATE_STATUS_NEW,
|
||||
FTDM_STATE_STATUS_PROCESSED,
|
||||
FTDM_STATE_STATUS_COMPLETED
|
||||
} ftdm_state_status_t;
|
||||
|
||||
typedef enum {
|
||||
ZSM_NONE,
|
||||
ZSM_UNACCEPTABLE,
|
||||
ZSM_ACCEPTABLE
|
||||
} ftdm_state_map_type_t;
|
||||
|
||||
typedef enum {
|
||||
ZSD_INBOUND,
|
||||
ZSD_OUTBOUND,
|
||||
} ftdm_state_direction_t;
|
||||
|
||||
#define FTDM_MAP_NODE_SIZE 512
|
||||
#define FTDM_MAP_MAX FTDM_CHANNEL_STATE_INVALID+2
|
||||
|
||||
struct ftdm_state_map_node {
|
||||
ftdm_state_direction_t direction;
|
||||
ftdm_state_map_type_t type;
|
||||
ftdm_channel_state_t check_states[FTDM_MAP_MAX];
|
||||
ftdm_channel_state_t states[FTDM_MAP_MAX];
|
||||
};
|
||||
typedef struct ftdm_state_map_node ftdm_state_map_node_t;
|
||||
|
||||
struct ftdm_state_map {
|
||||
ftdm_state_map_node_t nodes[FTDM_MAP_NODE_SIZE];
|
||||
};
|
||||
typedef struct ftdm_state_map ftdm_state_map_t;
|
||||
|
||||
FT_DECLARE(ftdm_status_t) ftdm_channel_set_state(const char *file, const char *func, int line,
|
||||
ftdm_channel_t *ftdmchan, ftdm_channel_state_t state, int wait);
|
||||
|
||||
/*!\brief Set the state of a channel immediately and implicitly complete the previous state */
|
||||
FT_DECLARE(ftdm_status_t) _ftdm_set_state(const char *file, const char *func, int line,
|
||||
ftdm_channel_t *fchan, ftdm_channel_state_t state);
|
||||
#define ftdm_set_state(obj, s) _ftdm_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s); \
|
||||
|
||||
/*!\brief This macro is deprecated, signaling modules should always lock the channel themselves anyways since they must
|
||||
* process first the user pending state changes then set a new state before releasing the lock
|
||||
*/
|
||||
#define ftdm_set_state_locked(obj, s) \
|
||||
do { \
|
||||
ftdm_channel_lock(obj); \
|
||||
ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s, 0); \
|
||||
ftdm_channel_unlock(obj); \
|
||||
} while(0);
|
||||
|
||||
#define ftdm_set_state_r(obj, s, r) r = ftdm_channel_set_state(__FILE__, __FUNCTION__, __LINE__, obj, s, 0);
|
||||
|
||||
#define ftdm_set_state_all(span, state) \
|
||||
do { \
|
||||
uint32_t _j; \
|
||||
ftdm_mutex_lock((span)->mutex); \
|
||||
for(_j = 1; _j <= (span)->chan_count; _j++) { \
|
||||
if (!FTDM_IS_DCHAN(span->channels[_j])) { \
|
||||
ftdm_set_state_locked((span->channels[_j]), state); \
|
||||
} \
|
||||
} \
|
||||
ftdm_mutex_unlock((span)->mutex); \
|
||||
} while (0);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
/* For Emacs:
|
||||
* Local Variables:
|
||||
* mode:c
|
||||
* indent-tabs-mode:t
|
||||
* tab-width:4
|
||||
* c-basic-offset:4
|
||||
* End:
|
||||
* For VIM:
|
||||
* vim:set softtabstop=4 shiftwidth=4 tabstop=4:
|
||||
*/
|
||||
@ -204,40 +204,6 @@ typedef enum {
|
||||
FTDM_CHANNEL_FEATURE_IO_STATS = (1<<9), /*!< Channel supports IO statistics (HDLC channels only) */
|
||||
} ftdm_channel_feature_t;
|
||||
|
||||
typedef enum {
|
||||
FTDM_CHANNEL_STATE_DOWN,
|
||||
FTDM_CHANNEL_STATE_HOLD,
|
||||
FTDM_CHANNEL_STATE_SUSPENDED,
|
||||
FTDM_CHANNEL_STATE_DIALTONE,
|
||||
FTDM_CHANNEL_STATE_COLLECT,
|
||||
FTDM_CHANNEL_STATE_RING,
|
||||
FTDM_CHANNEL_STATE_RINGING,
|
||||
FTDM_CHANNEL_STATE_BUSY,
|
||||
FTDM_CHANNEL_STATE_ATTN,
|
||||
FTDM_CHANNEL_STATE_GENRING,
|
||||
FTDM_CHANNEL_STATE_DIALING,
|
||||
FTDM_CHANNEL_STATE_GET_CALLERID,
|
||||
FTDM_CHANNEL_STATE_CALLWAITING,
|
||||
FTDM_CHANNEL_STATE_RESTART,
|
||||
FTDM_CHANNEL_STATE_PROCEED,
|
||||
FTDM_CHANNEL_STATE_PROGRESS,
|
||||
FTDM_CHANNEL_STATE_PROGRESS_MEDIA,
|
||||
FTDM_CHANNEL_STATE_UP,
|
||||
FTDM_CHANNEL_STATE_IDLE,
|
||||
FTDM_CHANNEL_STATE_TERMINATING,
|
||||
FTDM_CHANNEL_STATE_CANCEL,
|
||||
FTDM_CHANNEL_STATE_HANGUP,
|
||||
FTDM_CHANNEL_STATE_HANGUP_COMPLETE,
|
||||
FTDM_CHANNEL_STATE_IN_LOOP,
|
||||
FTDM_CHANNEL_STATE_RESET,
|
||||
FTDM_CHANNEL_STATE_INVALID
|
||||
} ftdm_channel_state_t;
|
||||
#define CHANNEL_STATE_STRINGS "DOWN", "HOLD", "SUSPENDED", "DIALTONE", "COLLECT", \
|
||||
"RING", "RINGING", "BUSY", "ATTN", "GENRING", "DIALING", "GET_CALLERID", "CALLWAITING", \
|
||||
"RESTART", "PROCEED", "PROGRESS", "PROGRESS_MEDIA", "UP", "IDLE", "TERMINATING", "CANCEL", \
|
||||
"HANGUP", "HANGUP_COMPLETE", "IN_LOOP", "RESET", "INVALID"
|
||||
FTDM_STR2ENUM_P(ftdm_str2ftdm_channel_state, ftdm_channel_state2str, ftdm_channel_state_t)
|
||||
|
||||
/*!< Channel flags. This used to be an enum but we reached the 32bit limit for enums, is safer this way */
|
||||
#define FTDM_CHANNEL_CONFIGURED (1ULL << 0)
|
||||
#define FTDM_CHANNEL_READY (1ULL << 1)
|
||||
@ -282,33 +248,10 @@ FTDM_STR2ENUM_P(ftdm_str2ftdm_channel_state, ftdm_channel_state2str, ftdm_channe
|
||||
#define FTDM_CHANNEL_CALL_STARTED (1ULL << 32)
|
||||
/*!< The user wants non-blocking operations in the channel */
|
||||
#define FTDM_CHANNEL_NONBLOCK (1ULL << 33)
|
||||
/*!< There is a pending acknowledge for an indication */
|
||||
#define FTDM_CHANNEL_IND_ACK_PENDING (1ULL << 34)
|
||||
|
||||
typedef enum {
|
||||
ZSM_NONE,
|
||||
ZSM_UNACCEPTABLE,
|
||||
ZSM_ACCEPTABLE
|
||||
} ftdm_state_map_type_t;
|
||||
|
||||
typedef enum {
|
||||
ZSD_INBOUND,
|
||||
ZSD_OUTBOUND,
|
||||
} ftdm_state_direction_t;
|
||||
|
||||
#define FTDM_MAP_NODE_SIZE 512
|
||||
#define FTDM_MAP_MAX FTDM_CHANNEL_STATE_INVALID+2
|
||||
|
||||
struct ftdm_state_map_node {
|
||||
ftdm_state_direction_t direction;
|
||||
ftdm_state_map_type_t type;
|
||||
ftdm_channel_state_t check_states[FTDM_MAP_MAX];
|
||||
ftdm_channel_state_t states[FTDM_MAP_MAX];
|
||||
};
|
||||
typedef struct ftdm_state_map_node ftdm_state_map_node_t;
|
||||
|
||||
struct ftdm_state_map {
|
||||
ftdm_state_map_node_t nodes[FTDM_MAP_NODE_SIZE];
|
||||
};
|
||||
typedef struct ftdm_state_map ftdm_state_map_t;
|
||||
#include "ftdm_state.h"
|
||||
|
||||
typedef enum ftdm_channel_hw_link_status {
|
||||
FTDM_HW_LINK_DISCONNECTED = 0,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user