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channel: Remove old epoll support and fixed max number of file descriptors.

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This change removes the old epoll support which has not been used or
maintained in quite some time.

The fixed number of file descriptors on a channel has also been removed.
File descriptors are now contained in a growable vector. This can be
used like before by specifying a specific position to store a file
descriptor at or using a new API call, ast_channel_fd_add, which adds
a file descriptor to the channel and returns its position.

Tests have been added which cover the growing behavior of the vector
and the new API call.

ASTERISK-26885

Change-Id: I1a754b506c009b83dfdeeb08c2d2815db30ef928
pull/7/head
Joshua Colp 8 years ago
parent f5603cb1ec
commit 5d938045d4
7 changed files with 201 additions and 405 deletions
Show Stats Download Patch File Download Diff File

19
apps/app_dial.c
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@ -1186,9 +1186,6 @@ static struct ast_channel *wait_for_answer(struct ast_channel *in,
int prestart = num.busy + num.congestion + num.nochan;
int orig = *to;
struct ast_channel *peer = NULL;
#ifdef HAVE_EPOLL
struct chanlist *epollo;
#endif
struct chanlist *outgoing = AST_LIST_FIRST(out_chans);
/* single is set if only one destination is enabled */
int single = outgoing && !AST_LIST_NEXT(outgoing, node);
@ -1227,12 +1224,6 @@ static struct ast_channel *wait_for_answer(struct ast_channel *in,
is_cc_recall = ast_cc_is_recall(in, &cc_recall_core_id, NULL);
#ifdef HAVE_EPOLL
AST_LIST_TRAVERSE(out_chans, epollo, node) {
ast_poll_channel_add(in, epollo->chan);
}
#endif
while ((*to = ast_remaining_ms(start, orig)) && !peer) {
struct chanlist *o;
int pos = 0; /* how many channels do we handle */
@ -1359,9 +1350,6 @@ static struct ast_channel *wait_for_answer(struct ast_channel *in,
f = ast_read(winner);
if (!f) {
ast_channel_hangupcause_set(in, ast_channel_hangupcause(c));
#ifdef HAVE_EPOLL
ast_poll_channel_del(in, c);
#endif
ast_channel_publish_dial(in, c, NULL, ast_hangup_cause_to_dial_status(ast_channel_hangupcause(c)));
ast_hangup(c);
c = o->chan = NULL;
@ -1786,13 +1774,6 @@ skip_frame:;
publish_dial_end_event(in, out_chans, NULL, "NOANSWER");
}
#ifdef HAVE_EPOLL
AST_LIST_TRAVERSE(out_chans, epollo, node) {
if (epollo->chan)
ast_poll_channel_del(in, epollo->chan);
}
#endif
if (is_cc_recall) {
ast_cc_completed(in, "Recall completed!");
}

18
apps/app_queue.c
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@ -4794,9 +4794,6 @@ static struct callattempt *wait_for_answer(struct queue_ent *qe, struct callatte
char membername[80] = "";
long starttime = 0;
long endtime = 0;
#ifdef HAVE_EPOLL
struct callattempt *epollo;
#endif
char *inchan_name;
struct timeval start_time_tv = ast_tvnow();
int canceled_by_caller = 0; /* 1 when caller hangs up or press digit or press * */
@ -4806,13 +4803,6 @@ static struct callattempt *wait_for_answer(struct queue_ent *qe, struct callatte
ast_channel_unlock(qe->chan);
starttime = (long) time(NULL);
#ifdef HAVE_EPOLL
for (epollo = outgoing; epollo; epollo = epollo->q_next) {
if (epollo->chan) {
ast_poll_channel_add(in, epollo->chan);
}
}
#endif
while ((*to = ast_remaining_ms(start_time_tv, orig)) && !peer) {
int numlines, retry, pos = 1;
@ -5325,14 +5315,6 @@ skip_frame:;
publish_dial_end_event(qe->chan, outgoing, NULL, "NOANSWER");
}
#ifdef HAVE_EPOLL
for (epollo = outgoing; epollo; epollo = epollo->q_next) {
if (epollo->chan) {
ast_poll_channel_del(in, epollo->chan);
}
}
#endif
return peer;
}

38
include/asterisk/channel.h
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@ -183,7 +183,8 @@ extern "C" {
#define DATASTORE_INHERIT_FOREVER INT_MAX
#define AST_MAX_FDS 11
#define AST_MAX_FDS 11 /*!< original maximum number of file descriptors */
#define AST_EXTENDED_FDS 12 /*!< the start of extended file descriptor positions */
/*
* We have AST_MAX_FDS file descriptors in a channel.
* Some of them have a fixed use:
@ -2402,12 +2403,6 @@ void ast_channel_set_caller_event(struct ast_channel *chan, const struct ast_par
/*! Set the file descriptor on the channel */
void ast_channel_set_fd(struct ast_channel *chan, int which, int fd);
/*! Add a channel to an optimized waitfor */
void ast_poll_channel_add(struct ast_channel *chan0, struct ast_channel *chan1);
/*! Delete a channel from an optimized waitfor */
void ast_poll_channel_del(struct ast_channel *chan0, struct ast_channel *chan1);
/*! Start a tone going */
int ast_tonepair_start(struct ast_channel *chan, int freq1, int freq2, int duration, int vol);
/*! Stop a tone from playing */
@ -4300,11 +4295,30 @@ void ast_channel_internal_fd_set(struct ast_channel *chan, int which, int value)
int ast_channel_fd(const struct ast_channel *chan, int which);
int ast_channel_fd_isset(const struct ast_channel *chan, int which);
/* epoll data internal accessors */
#ifdef HAVE_EPOLL
struct ast_epoll_data *ast_channel_internal_epfd_data(const struct ast_channel *chan, int which);
void ast_channel_internal_epfd_data_set(struct ast_channel *chan, int which , struct ast_epoll_data *value);
#endif
/*!
* \since 15
* \brief Retrieve the number of file decriptor positions present on the channel
*
* \param chan The channel to get the count of
*
* \pre chan is locked
*
* \return The number of file descriptor positions
*/
int ast_channel_fd_count(const struct ast_channel *chan);
/*!
* \since 15
* \brief Add a file descriptor to the channel without a fixed position
*
* \param chan The channel to add the file descriptor to
* \param value The file descriptor
*
* \pre chan is locked
*
* \return The position of the file descriptor
*/
int ast_channel_fd_add(struct ast_channel *chan, int value);
pthread_t ast_channel_blocker(const struct ast_channel *chan);
void ast_channel_blocker_set(struct ast_channel *chan, pthread_t value);

336
main/channel.c
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@ -78,21 +78,12 @@
/*** DOCUMENTATION
***/
#ifdef HAVE_EPOLL
#include <sys/epoll.h>
#endif
#if defined(KEEP_TILL_CHANNEL_PARTY_NUMBER_INFO_NEEDED)
#if defined(HAVE_PRI)
#include "libpri.h"
#endif /* defined(HAVE_PRI) */
#endif /* defined(KEEP_TILL_CHANNEL_PARTY_NUMBER_INFO_NEEDED) */
struct ast_epoll_data {
struct ast_channel *chan;
int which;
};
/* uncomment if you have problems with 'monitoring' synchronized files */
#if 0
#define MONITOR_CONSTANT_DELAY
@ -850,10 +841,6 @@ __ast_channel_alloc_ap(int needqueue, int state, const char *cid_num, const char
ast_channel_internal_alertpipe_clear(tmp);
ast_channel_internal_fd_clear_all(tmp);
#ifdef HAVE_EPOLL
ast_channel_epfd_set(tmp, epoll_create(25));
#endif
if (!(schedctx = ast_sched_context_create())) {
ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n");
/* See earlier channel creation abort comment above. */
@ -1058,9 +1045,6 @@ struct ast_channel *__ast_dummy_channel_alloc(const char *file, int line, const
ast_channel_timingfd_set(tmp, -1);
ast_channel_internal_alertpipe_clear(tmp);
ast_channel_internal_fd_clear_all(tmp);
#ifdef HAVE_EPOLL
ast_channel_epfd_set(tmp, -1);
#endif
ast_channel_hold_state_set(tmp, AST_CONTROL_UNHOLD);
@ -2223,9 +2207,6 @@ void ast_party_redirecting_free(struct ast_party_redirecting *doomed)
static void ast_channel_destructor(void *obj)
{
struct ast_channel *chan = obj;
#ifdef HAVE_EPOLL
int i;
#endif
struct ast_var_t *vardata;
struct ast_frame *f;
struct varshead *headp;
@ -2323,14 +2304,6 @@ static void ast_channel_destructor(void *obj)
ast_timer_close(ast_channel_timer(chan));
ast_channel_timer_set(chan, NULL);
}
#ifdef HAVE_EPOLL
for (i = 0; i < AST_MAX_FDS; i++) {
if (ast_channel_internal_epfd_data(chan, i)) {
ast_free(ast_channel_internal_epfd_data(chan, i));
}
}
close(ast_channel_epfd(chan));
#endif
while ((f = AST_LIST_REMOVE_HEAD(ast_channel_readq(chan), frame_list)))
ast_frfree(f);
@ -2481,82 +2454,10 @@ struct ast_datastore *ast_channel_datastore_find(struct ast_channel *chan, const
/*! Set the file descriptor on the channel */
void ast_channel_set_fd(struct ast_channel *chan, int which, int fd)
{
#ifdef HAVE_EPOLL
struct epoll_event ev;
struct ast_epoll_data *aed = NULL;
if (ast_channel_fd_isset(chan, which)) {
epoll_ctl(ast_channel_epfd(chan), EPOLL_CTL_DEL, ast_channel_fd(chan, which), &ev);
aed = ast_channel_internal_epfd_data(chan, which);
}
/* If this new fd is valid, add it to the epoll */
if (fd > -1) {
if (!aed && (!(aed = ast_calloc(1, sizeof(*aed)))))
return;
ast_channel_internal_epfd_data_set(chan, which, aed);
aed->chan = chan;
aed->which = which;
ev.events = EPOLLIN | EPOLLPRI | EPOLLERR | EPOLLHUP;
ev.data.ptr = aed;
epoll_ctl(ast_channel_epfd(chan), EPOLL_CTL_ADD, fd, &ev);
} else if (aed) {
/* We don't have to keep around this epoll data structure now */
ast_free(aed);
ast_channel_epfd_data_set(chan, which, NULL);
}
#endif
ast_channel_internal_fd_set(chan, which, fd);
return;
}
/*! Add a channel to an optimized waitfor */
void ast_poll_channel_add(struct ast_channel *chan0, struct ast_channel *chan1)
{
#ifdef HAVE_EPOLL
struct epoll_event ev;
int i = 0;
if (ast_channel_epfd(chan0) == -1)
return;
/* Iterate through the file descriptors on chan1, adding them to chan0 */
for (i = 0; i < AST_MAX_FDS; i++) {
if (!ast_channel_fd_isset(chan1, i)) {
continue;
}
ev.events = EPOLLIN | EPOLLPRI | EPOLLERR | EPOLLHUP;
ev.data.ptr = ast_channel_internal_epfd_data(chan1, i);
epoll_ctl(ast_channel_epfd(chan0), EPOLL_CTL_ADD, ast_channel_fd(chan1, i), &ev);
}
#endif
return;
}
/*! Delete a channel from an optimized waitfor */
void ast_poll_channel_del(struct ast_channel *chan0, struct ast_channel *chan1)
{
#ifdef HAVE_EPOLL
struct epoll_event ev;
int i = 0;
if (ast_channel_epfd(chan0) == -1)
return;
for (i = 0; i < AST_MAX_FDS; i++) {
if (!ast_channel_fd_isset(chan1, i)) {
continue;
}
epoll_ctl(ast_channel_epfd(chan0), EPOLL_CTL_DEL, ast_channel_fd(chan1, i), &ev);
}
#endif
return;
}
void ast_channel_clear_softhangup(struct ast_channel *chan, int flag)
{
ast_channel_lock(chan);
@ -3061,20 +2962,15 @@ int ast_waitfor_n_fd(int *fds, int n, int *ms, int *exception)
}
/*! \brief Wait for x amount of time on a file descriptor to have input. */
#ifdef HAVE_EPOLL
static struct ast_channel *ast_waitfor_nandfds_classic(struct ast_channel **c, int n, int *fds, int nfds,
int *exception, int *outfd, int *ms)
#else
struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds, int nfds,
int *exception, int *outfd, int *ms)
#endif
{
struct timeval start = { 0 , 0 };
struct pollfd *pfds = NULL;
int res;
long rms;
int x, y, max;
int sz;
int sz = nfds;
struct timeval now = { 0, 0 };
struct timeval whentohangup = { 0, 0 }, diff;
struct ast_channel *winner = NULL;
@ -3090,14 +2986,6 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
*exception = 0;
}
if ((sz = n * AST_MAX_FDS + nfds)) {
pfds = ast_alloca(sizeof(*pfds) * sz);
fdmap = ast_alloca(sizeof(*fdmap) * sz);
} else {
/* nothing to allocate and no FDs to check */
return NULL;
}
for (x = 0; x < n; x++) {
ast_channel_lock(c[x]);
if (!ast_tvzero(*ast_channel_whentohangup(c[x]))) {
@ -3114,8 +3002,17 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
if (ast_tvzero(whentohangup) || ast_tvcmp(diff, whentohangup) < 0)
whentohangup = diff;
}
sz += ast_channel_fd_count(c[x]);
ast_channel_unlock(c[x]);
}
if (!sz) {
return NULL;
}
pfds = ast_alloca(sizeof(*pfds) * sz);
fdmap = ast_alloca(sizeof(*fdmap) * sz);
/* Wait full interval */
rms = *ms;
/* INT_MAX, not LONG_MAX, because it matters on 64-bit */
@ -3135,12 +3032,12 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
*/
max = 0;
for (x = 0; x < n; x++) {
for (y = 0; y < AST_MAX_FDS; y++) {
ast_channel_lock(c[x]);
for (y = 0; y < ast_channel_fd_count(c[x]); y++) {
fdmap[max].fdno = y; /* fd y is linked to this pfds */
fdmap[max].chan = x; /* channel x is linked to this pfds */
max += ast_add_fd(&pfds[max], ast_channel_fd(c[x], y));
}
ast_channel_lock(c[x]);
CHECK_BLOCKING(c[x]);
ast_channel_unlock(c[x]);
}
@ -3234,205 +3131,6 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
return winner;
}
#ifdef HAVE_EPOLL
static struct ast_channel *ast_waitfor_nandfds_simple(struct ast_channel *chan, int *ms)
{
struct timeval start = { 0 , 0 };
int res = 0;
struct epoll_event ev[1];
long diff, rms = *ms;
struct ast_channel *winner = NULL;
struct ast_epoll_data *aed = NULL;
ast_channel_lock(chan);
/* Figure out their timeout */
if (!ast_tvzero(*ast_channel_whentohangup(chan))) {
if ((diff = ast_tvdiff_ms(*ast_channel_whentohangup(chan), ast_tvnow())) < 0) {
/* They should already be hungup! */
ast_channel_softhangup_internal_flag_add(chan, AST_SOFTHANGUP_TIMEOUT);
ast_channel_unlock(chan);
return NULL;
}
/* If this value is smaller then the current one... make it priority */
if (rms > diff) {
rms = diff;
}
}
ast_channel_unlock(chan);
/* Time to make this channel block... */
CHECK_BLOCKING(chan);
if (*ms > 0) {
start = ast_tvnow();
}
/* We don't have to add any file descriptors... they are already added, we just have to wait! */
res = epoll_wait(ast_channel_epfd(chan), ev, 1, rms);
/* Stop blocking */
ast_clear_flag(ast_channel_flags(chan), AST_FLAG_BLOCKING);
/* Simulate a timeout if we were interrupted */
if (res < 0) {
if (errno != EINTR) {
*ms = -1;
}
return NULL;
}
/* If this channel has a timeout see if it expired */
if (!ast_tvzero(*ast_channel_whentohangup(chan))) {
if (ast_tvdiff_ms(ast_tvnow(), *ast_channel_whentohangup(chan)) >= 0) {
ast_channel_softhangup_internal_flag_add(chan, AST_SOFTHANGUP_TIMEOUT);
winner = chan;
}
}
/* No fd ready, reset timeout and be done for now */
if (!res) {
*ms = 0;
return winner;
}
/* See what events are pending */
aed = ev[0].data.ptr;
ast_channel_fdno_set(chan, aed->which);
if (ev[0].events & EPOLLPRI) {
ast_set_flag(ast_channel_flags(chan), AST_FLAG_EXCEPTION);
} else {
ast_clear_flag(ast_channel_flags(chan), AST_FLAG_EXCEPTION);
}
if (*ms > 0) {
*ms -= ast_tvdiff_ms(ast_tvnow(), start);
if (*ms < 0) {
*ms = 0;
}
}
return chan;
}
static struct ast_channel *ast_waitfor_nandfds_complex(struct ast_channel **c, int n, int *ms)
{
struct timeval start = { 0 , 0 };
int res = 0, i;
struct epoll_event ev[25] = { { 0, } };
struct timeval now = { 0, 0 };
long whentohangup = 0, diff = 0, rms = *ms;
struct ast_channel *winner = NULL;
for (i = 0; i < n; i++) {
ast_channel_lock(c[i]);
if (!ast_tvzero(*ast_channel_whentohangup(c[i]))) {
if (whentohangup == 0) {
now = ast_tvnow();
}
if ((diff = ast_tvdiff_ms(*ast_channel_whentohangup(c[i]), now)) < 0) {
ast_channel_softhangup_internal_flag_add(c[i], AST_SOFTHANGUP_TIMEOUT);
ast_channel_unlock(c[i]);
return c[i];
}
if (!whentohangup || whentohangup > diff) {
whentohangup = diff;
}
}
ast_channel_unlock(c[i]);
CHECK_BLOCKING(c[i]);
}
rms = *ms;
if (whentohangup) {
rms = whentohangup;
if (*ms >= 0 && *ms < rms) {
rms = *ms;
}
}
if (*ms > 0) {
start = ast_tvnow();
}
res = epoll_wait(ast_channel_epfd(c[0]), ev, 25, rms);
for (i = 0; i < n; i++) {
ast_clear_flag(ast_channel_flags(c[i]), AST_FLAG_BLOCKING);
}
if (res < 0) {
if (errno != EINTR) {
*ms = -1;
}
return NULL;
}
if (whentohangup) {
now = ast_tvnow();
for (i = 0; i < n; i++) {
if (!ast_tvzero(*ast_channel_whentohangup(c[i])) && ast_tvdiff_ms(now, *ast_channel_whentohangup(c[i])) >= 0) {
ast_channel_softhangup_internal_flag_add(c[i], AST_SOFTHANGUP_TIMEOUT);
if (!winner) {
winner = c[i];
}
}
}
}
if (!res) {
*ms = 0;
return winner;
}
for (i = 0; i < res; i++) {
struct ast_epoll_data *aed = ev[i].data.ptr;
if (!ev[i].events || !aed) {
continue;
}
winner = aed->chan;
if (ev[i].events & EPOLLPRI) {
ast_set_flag(ast_channel_flags(winner), AST_FLAG_EXCEPTION);
} else {
ast_clear_flag(ast_channel_flags(winner), AST_FLAG_EXCEPTION);
}
ast_channel_fdno_set(winner, aed->which);
}
if (*ms > 0) {
*ms -= ast_tvdiff_ms(ast_tvnow(), start);
if (*ms < 0) {
*ms = 0;
}
}
return winner;
}
struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds, int nfds,
int *exception, int *outfd, int *ms)
{
/* Clear all provided values in one place. */
if (outfd) {
*outfd = -99999;
}
if (exception) {
*exception = 0;
}
/* If no epoll file descriptor is available resort to classic nandfds */
if (!n || nfds || ast_channel_epfd(c[0]) == -1) {
return ast_waitfor_nandfds_classic(c, n, fds, nfds, exception, outfd, ms);
} else if (!nfds && n == 1) {
return ast_waitfor_nandfds_simple(c[0], ms);
} else {
return ast_waitfor_nandfds_complex(c, n, ms);
}
}
#endif
struct ast_channel *ast_waitfor_n(struct ast_channel **c, int n, int *ms)
{
return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms);
@ -6852,6 +6550,7 @@ static void channel_do_masquerade(struct ast_channel *original, struct ast_chann
int origstate;
unsigned int orig_disablestatecache;
unsigned int clone_disablestatecache;
int generator_fd;
int visible_indication;
int clone_hold_state;
int moh_is_playing;
@ -7042,8 +6741,13 @@ static void channel_do_masquerade(struct ast_channel *original, struct ast_chann
/* Keep the same parkinglot. */
ast_channel_parkinglot_set(original, ast_channel_parkinglot(clonechan));
/* Copy the FD's other than the generator fd */
for (x = 0; x < AST_MAX_FDS; x++) {
/* Clear all existing file descriptors but retain the generator */
generator_fd = ast_channel_fd(original, AST_GENERATOR_FD);
ast_channel_internal_fd_clear_all(original);
ast_channel_set_fd(original, AST_GENERATOR_FD, generator_fd);
/* Copy all file descriptors present on clonechan to original, skipping generator */
for (x = 0; x < ast_channel_fd_count(clonechan); x++) {
if (x != AST_GENERATOR_FD)
ast_channel_set_fd(original, x, ast_channel_fd(clonechan, x));
}

67
main/channel_internal_api.c
Unescape View File

@ -48,6 +48,7 @@
#include "asterisk/stringfields.h"
#include "asterisk/stream.h"
#include "asterisk/test.h"
#include "asterisk/vector.h"
/*!
* \brief Channel UniqueId structure
@ -96,9 +97,6 @@ struct ast_channel {
* in the CHANNEL dialplan function */
struct ast_channel_monitor *monitor; /*!< Channel monitoring */
ast_callid callid; /*!< Bound call identifier pointer */
#ifdef HAVE_EPOLL
struct ast_epoll_data *epfd_data[AST_MAX_FDS];
#endif
struct ao2_container *dialed_causes; /*!< Contains tech-specific and Asterisk cause data from dialed channels */
AST_DECLARE_STRING_FIELDS(
@ -167,7 +165,7 @@ struct ast_channel {
unsigned long insmpl; /*!< Track the read/written samples for monitor use */
unsigned long outsmpl; /*!< Track the read/written samples for monitor use */
int fds[AST_MAX_FDS]; /*!< File descriptors for channel -- Drivers will poll on
AST_VECTOR(, int) fds; /*!< File descriptors for channel -- Drivers will poll on
* these file descriptors, so at least one must be non -1.
* See \arg \ref AstFileDesc */
int softhangup; /*!< Whether or not we have been hung up... Do not set this value
@ -197,9 +195,6 @@ struct ast_channel {
struct ast_format *rawreadformat; /*!< Raw read format (before translation) */
struct ast_format *rawwriteformat; /*!< Raw write format (after translation) */
unsigned int emulate_dtmf_duration; /*!< Number of ms left to emulate DTMF for */
#ifdef HAVE_EPOLL
int epfd;
#endif
int visible_indication; /*!< Indication currently playing on the channel */
int hold_state; /*!< Current Hold/Unhold state */
@ -597,17 +592,6 @@ void ast_channel_amaflags_set(struct ast_channel *chan, enum ama_flags value)
chan->amaflags = value;
ast_channel_publish_snapshot(chan);
}
#ifdef HAVE_EPOLL
int ast_channel_epfd(const struct ast_channel *chan)
{
return chan->epfd;
}
void ast_channel_epfd_set(struct ast_channel *chan, int value)
{
chan->epfd = value;
}
#endif
int ast_channel_fdno(const struct ast_channel *chan)
{
return chan->fdno;
@ -1432,38 +1416,55 @@ void ast_channel_internal_alertpipe_swap(struct ast_channel *chan1, struct ast_c
/* file descriptor array accessors */
void ast_channel_internal_fd_set(struct ast_channel *chan, int which, int value)
{
chan->fds[which] = value;
int pos;
/* This ensures that if the vector has to grow with unused positions they will be
* initialized to -1.
*/
for (pos = AST_VECTOR_SIZE(&chan->fds); pos < which; pos++) {
AST_VECTOR_REPLACE(&chan->fds, pos, -1);
}
AST_VECTOR_REPLACE(&chan->fds, which, value);
}
void ast_channel_internal_fd_clear(struct ast_channel *chan, int which)
{
ast_channel_internal_fd_set(chan, which, -1);
if (which >= AST_VECTOR_SIZE(&chan->fds)) {
return;
}
AST_VECTOR_REPLACE(&chan->fds, which, -1);
}
void ast_channel_internal_fd_clear_all(struct ast_channel *chan)
{
int i;
for (i = 0; i < AST_MAX_FDS; i++) {
ast_channel_internal_fd_clear(chan, i);
}
AST_VECTOR_RESET(&chan->fds, AST_VECTOR_ELEM_CLEANUP_NOOP);
}
int ast_channel_fd(const struct ast_channel *chan, int which)
{
return chan->fds[which];
return (which >= AST_VECTOR_SIZE(&chan->fds)) ? -1 : AST_VECTOR_GET(&chan->fds, which);
}
int ast_channel_fd_isset(const struct ast_channel *chan, int which)
{
return ast_channel_fd(chan, which) > -1;
}
#ifdef HAVE_EPOLL
struct ast_epoll_data *ast_channel_internal_epfd_data(const struct ast_channel *chan, int which)
int ast_channel_fd_count(const struct ast_channel *chan)
{
return chan->epfd_data[which];
return AST_VECTOR_SIZE(&chan->fds);
}
void ast_channel_internal_epfd_data_set(struct ast_channel *chan, int which , struct ast_epoll_data *value)
int ast_channel_fd_add(struct ast_channel *chan, int value)
{
chan->epfd_data[which] = value;
int pos = AST_EXTENDED_FDS;
while (ast_channel_fd_isset(chan, pos)) {
pos += 1;
}
AST_VECTOR_REPLACE(&chan->fds, pos, value);
return pos;
}
#endif
pthread_t ast_channel_blocker(const struct ast_channel *chan)
{
@ -1617,6 +1618,8 @@ struct ast_channel *__ast_channel_internal_alloc(void (*destructor)(void *obj),
tmp->linkedid = tmp->uniqueid;
}
AST_VECTOR_INIT(&tmp->fds, AST_MAX_FDS);
return tmp;
}
@ -1693,6 +1696,8 @@ void ast_channel_internal_cleanup(struct ast_channel *chan)
chan->topics = NULL;
ast_channel_internal_set_stream_topology(chan, NULL);
AST_VECTOR_FREE(&chan->fds);
}
void ast_channel_internal_finalize(struct ast_channel *chan)

9
main/dial.c
Unescape View File

@ -479,9 +479,6 @@ static int begin_dial_channel(struct ast_dial_channel *channel, struct ast_chann
ast_hangup(channel->owner);
channel->owner = NULL;
} else {
if (chan) {
ast_poll_channel_add(chan, channel->owner);
}
ast_channel_publish_dial(async ? NULL : chan, channel->owner, channel->device, NULL);
res = 1;
ast_verb(3, "Called %s\n", numsubst);
@ -868,8 +865,6 @@ static enum ast_dial_result monitor_dial(struct ast_dial *dial, struct ast_chann
set_state(dial, AST_DIAL_RESULT_HANGUP);
break;
}
if (chan)
ast_poll_channel_del(chan, channel->owner);
ast_channel_publish_dial(chan, who, channel->device, ast_hangup_cause_to_dial_status(ast_channel_hangupcause(who)));
ast_hangup(who);
channel->owner = NULL;
@ -890,8 +885,6 @@ static enum ast_dial_result monitor_dial(struct ast_dial *dial, struct ast_chann
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (!channel->owner || channel->owner == who)
continue;
if (chan)
ast_poll_channel_del(chan, channel->owner);
ast_channel_publish_dial(chan, channel->owner, channel->device, "CANCEL");
ast_hangup(channel->owner);
channel->cause = AST_CAUSE_ANSWERED_ELSEWHERE;
@ -915,8 +908,6 @@ static enum ast_dial_result monitor_dial(struct ast_dial *dial, struct ast_chann
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (!channel->owner)
continue;
if (chan)
ast_poll_channel_del(chan, channel->owner);
ast_channel_publish_dial(chan, channel->owner, channel->device, "CANCEL");
ast_hangup(channel->owner);
channel->cause = AST_CAUSE_NORMAL_CLEARING;

119
tests/test_channel.c
Unescape View File

@ -0,0 +1,119 @@
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2017, Digium, Inc.
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief Channel unit tests
*
* \author Joshua Colp <jcolp@digium.com>
*
*/
/*** MODULEINFO
<depend>TEST_FRAMEWORK</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/test.h"
#include "asterisk/channel.h"
AST_TEST_DEFINE(set_fd_grow)
{
struct ast_channel *mock_channel;
enum ast_test_result_state res = AST_TEST_PASS;
int pos;
switch (cmd) {
case TEST_INIT:
info->name = "set_fd_grow";
info->category = "/main/channel/";
info->summary = "channel setting file descriptor with growth test";
info->description =
"Test that setting a file descriptor on a high position of a channel results in -1 set on any new positions";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
mock_channel = ast_channel_alloc(0, AST_STATE_DOWN, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, "TestChannel");
ast_test_validate_cleanup(test, mock_channel, res, done);
ast_channel_set_fd(mock_channel, AST_EXTENDED_FDS + 10, 1);
ast_test_validate_cleanup(test, ast_channel_fd_count(mock_channel) == AST_EXTENDED_FDS + 11, res, done);
for (pos = AST_EXTENDED_FDS; (pos < AST_EXTENDED_FDS + 10); pos++) {
ast_test_validate_cleanup(test, ast_channel_fd(mock_channel, pos) == -1, res, done);
}
done:
ast_hangup(mock_channel);
return res;
}
AST_TEST_DEFINE(add_fd)
{
struct ast_channel *mock_channel;
enum ast_test_result_state res = AST_TEST_PASS;
int pos;
switch (cmd) {
case TEST_INIT:
info->name = "add_fd";
info->category = "/main/channel/";
info->summary = "channel adding file descriptor test";
info->description =
"Test that adding a file descriptor to a channel places it in the expected position";
return AST_TEST_NOT_RUN;
case TEST_EXECUTE:
break;
}
mock_channel = ast_channel_alloc(0, AST_STATE_DOWN, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, "TestChannel");
ast_test_validate_cleanup(test, mock_channel, res, done);
pos = ast_channel_fd_add(mock_channel, 1);
ast_test_validate_cleanup(test, pos == AST_EXTENDED_FDS, res, done);
ast_channel_set_fd(mock_channel, pos, -1);
ast_test_validate_cleanup(test, ast_channel_fd(mock_channel, pos) == -1, res, done);
done:
ast_hangup(mock_channel);
return res;
}
static int unload_module(void)
{
AST_TEST_UNREGISTER(set_fd_grow);
AST_TEST_UNREGISTER(add_fd);
return 0;
}
static int load_module(void)
{
AST_TEST_REGISTER(set_fd_grow);
AST_TEST_REGISTER(add_fd);
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Channel Unit Tests");
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