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timing: Improve performance for most timing implementations.

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This change allows timing implementation data to be stored directly
on the timer itself thus removing the requirement for many
implementations to do a container lookup for the same information.

This means that API calls into timing implementations can directly
access the information they need instead of having to find it.

Review: https://reviewboard.asterisk.org/r/3175/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@407749 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2014-02-07 20:01:45 +00:00
parent 5fd63e2d0b
commit e8e2f91bba
6 changed files with 268 additions and 481 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
include/asterisk/timing.h
View File

@@ -71,14 +71,15 @@ struct ast_timing_interface {
/*! This handles the case where multiple timing modules are loaded.
* The highest priority timing interface available will be used. */
unsigned int priority;
int (*timer_open)(void);
void (*timer_close)(int handle);
int (*timer_set_rate)(int handle, unsigned int rate);
int (*timer_ack)(int handle, unsigned int quantity);
int (*timer_enable_continuous)(int handle);
int (*timer_disable_continuous)(int handle);
enum ast_timer_event (*timer_get_event)(int handle);
unsigned int (*timer_get_max_rate)(int handle);
void *(*timer_open)(void);
void (*timer_close)(void *data);
int (*timer_set_rate)(void *data, unsigned int rate);
int (*timer_ack)(void *data, unsigned int quantity);
int (*timer_enable_continuous)(void *data);
int (*timer_disable_continuous)(void *data);
enum ast_timer_event (*timer_get_event)(void *data);
unsigned int (*timer_get_max_rate)(void *data);
int (*timer_fd)(void *data);
};
/*!

56
main/timing.c
View File

@@ -54,7 +54,7 @@ struct timing_holder {
static struct ast_heap *timing_interfaces;
struct ast_timer {
int fd;
void *data;
struct timing_holder *holder;
};
@@ -84,7 +84,8 @@ void *_ast_register_timing_interface(struct ast_timing_interface *funcs,
!funcs->timer_get_event ||
!funcs->timer_get_max_rate ||
!funcs->timer_enable_continuous ||
!funcs->timer_disable_continuous) {
!funcs->timer_disable_continuous ||
!funcs->timer_fd) {
return NULL;
}
@@ -122,22 +123,22 @@ int ast_unregister_timing_interface(void *handle)
struct ast_timer *ast_timer_open(void)
{
int fd = -1;
void *data = NULL;
struct timing_holder *h;
struct ast_timer *t = NULL;
ast_heap_rdlock(timing_interfaces);
if ((h = ast_heap_peek(timing_interfaces, 1))) {
fd = h->iface->timer_open();
data = h->iface->timer_open();
ast_module_ref(h->mod);
}
if (fd != -1) {
if (data) {
if (!(t = ast_calloc(1, sizeof(*t)))) {
h->iface->timer_close(fd);
h->iface->timer_close(data);
} else {
t->fd = fd;
t->data = data;
t->holder = h;
}
}
@@ -149,69 +150,44 @@ struct ast_timer *ast_timer_open(void)
void ast_timer_close(struct ast_timer *handle)
{
handle->holder->iface->timer_close(handle->fd);
handle->fd = -1;
handle->holder->iface->timer_close(handle->data);
ast_module_unref(handle->holder->mod);
ast_free(handle);
}
int ast_timer_fd(const struct ast_timer *handle)
{
return handle->fd;
return handle->holder->iface->timer_fd(handle->data);
}
int ast_timer_set_rate(const struct ast_timer *handle, unsigned int rate)
{
int res = -1;
res = handle->holder->iface->timer_set_rate(handle->fd, rate);
return res;
return handle->holder->iface->timer_set_rate(handle->data, rate);
}
int ast_timer_ack(const struct ast_timer *handle, unsigned int quantity)
{
int res = -1;
res = handle->holder->iface->timer_ack(handle->fd, quantity);
return res;
return handle->holder->iface->timer_ack(handle->data, quantity);
}
int ast_timer_enable_continuous(const struct ast_timer *handle)
{
int res = -1;
res = handle->holder->iface->timer_enable_continuous(handle->fd);
return res;
return handle->holder->iface->timer_enable_continuous(handle->data);
}
int ast_timer_disable_continuous(const struct ast_timer *handle)
{
int res = -1;
res = handle->holder->iface->timer_disable_continuous(handle->fd);
return res;
return handle->holder->iface->timer_disable_continuous(handle->data);
}
enum ast_timer_event ast_timer_get_event(const struct ast_timer *handle)
{
enum ast_timer_event res = -1;
res = handle->holder->iface->timer_get_event(handle->fd);
return res;
return handle->holder->iface->timer_get_event(handle->data);
}
unsigned int ast_timer_get_max_rate(const struct ast_timer *handle)
{
unsigned int res = 0;
res = handle->holder->iface->timer_get_max_rate(handle->fd);
return res;
return handle->holder->iface->timer_get_max_rate(handle->data);
}
const char *ast_timer_get_name(const struct ast_timer *handle)

82
res/res_timing_dahdi.c
View File

@@ -45,14 +45,15 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$");
static void *timing_funcs_handle;
static int dahdi_timer_open(void);
static void dahdi_timer_close(int handle);
static int dahdi_timer_set_rate(int handle, unsigned int rate);
static int dahdi_timer_ack(int handle, unsigned int quantity);
static int dahdi_timer_enable_continuous(int handle);
static int dahdi_timer_disable_continuous(int handle);
static enum ast_timer_event dahdi_timer_get_event(int handle);
static unsigned int dahdi_timer_get_max_rate(int handle);
static void *dahdi_timer_open(void);
static void dahdi_timer_close(void *data);
static int dahdi_timer_set_rate(void *data, unsigned int rate);
static int dahdi_timer_ack(void *data, unsigned int quantity);
static int dahdi_timer_enable_continuous(void *data);
static int dahdi_timer_disable_continuous(void *data);
static enum ast_timer_event dahdi_timer_get_event(void *data);
static unsigned int dahdi_timer_get_max_rate(void *data);
static int dahdi_timer_fd(void *data);
static struct ast_timing_interface dahdi_timing = {
.name = "DAHDI",
@@ -65,27 +66,48 @@ static struct ast_timing_interface dahdi_timing = {
.timer_disable_continuous = dahdi_timer_disable_continuous,
.timer_get_event = dahdi_timer_get_event,
.timer_get_max_rate = dahdi_timer_get_max_rate,
.timer_fd = dahdi_timer_fd,
};
static int dahdi_timer_open(void)
struct dahdi_timer {
int fd;
};
static void *dahdi_timer_open(void)
{
return open("/dev/dahdi/timer", O_RDWR);
struct dahdi_timer *timer;
if (!(timer = ast_calloc(1, sizeof(*timer)))) {
return NULL;
}
static void dahdi_timer_close(int handle)
{
close(handle);
if ((timer->fd = open("/dev/dahdi/timer", O_RDWR)) < 0) {
ast_log(LOG_ERROR, "Failed to create dahdi timer: %s\n", strerror(errno));
ast_free(timer);
return NULL;
}
static int dahdi_timer_set_rate(int handle, unsigned int rate)
return timer;
}
static void dahdi_timer_close(void *data)
{
struct dahdi_timer *timer = data;
close(timer->fd);
ast_free(timer);
}
static int dahdi_timer_set_rate(void *data, unsigned int rate)
{
struct dahdi_timer *timer = data;
int samples;
/* DAHDI timers are configured using a number of samples,
* based on an 8 kHz sample rate. */
samples = (unsigned int) roundf((8000.0 / ((float) rate)));
if (ioctl(handle, DAHDI_TIMERCONFIG, &samples)) {
if (ioctl(timer->fd, DAHDI_TIMERCONFIG, &samples)) {
ast_log(LOG_ERROR, "Failed to configure DAHDI timing fd for %u sample timer ticks\n",
samples);
return -1;
@@ -94,31 +116,36 @@ static int dahdi_timer_set_rate(int handle, unsigned int rate)
return 0;
}
static int dahdi_timer_ack(int handle, unsigned int quantity)
static int dahdi_timer_ack(void *data, unsigned int quantity)
{
return ioctl(handle, DAHDI_TIMERACK, &quantity) ? -1 : 0;
struct dahdi_timer *timer = data;
return ioctl(timer->fd, DAHDI_TIMERACK, &quantity) ? -1 : 0;
}
static int dahdi_timer_enable_continuous(int handle)
static int dahdi_timer_enable_continuous(void *data)
{
struct dahdi_timer *timer = data;
int flags = 1;
return ioctl(handle, DAHDI_TIMERPING, &flags) ? -1 : 0;
return ioctl(timer->fd, DAHDI_TIMERPING, &flags) ? -1 : 0;
}
static int dahdi_timer_disable_continuous(int handle)
static int dahdi_timer_disable_continuous(void *data)
{
struct dahdi_timer *timer = data;
int flags = -1;
return ioctl(handle, DAHDI_TIMERPONG, &flags) ? -1 : 0;
return ioctl(timer->fd, DAHDI_TIMERPONG, &flags) ? -1 : 0;
}
static enum ast_timer_event dahdi_timer_get_event(int handle)
static enum ast_timer_event dahdi_timer_get_event(void *data)
{
struct dahdi_timer *timer = data;
int res;
int event;
res = ioctl(handle, DAHDI_GETEVENT, &event);
res = ioctl(timer->fd, DAHDI_GETEVENT, &event);
if (res) {
event = DAHDI_EVENT_TIMER_EXPIRED;
@@ -133,11 +160,18 @@ static enum ast_timer_event dahdi_timer_get_event(int handle)
}
}
static unsigned int dahdi_timer_get_max_rate(int handle)
static unsigned int dahdi_timer_get_max_rate(void *data)
{
return 1000;
}
static int dahdi_timer_fd(void *data)
{
struct dahdi_timer *timer = data;
return timer->fd;
}
#define SEE_TIMING "For more information on Asterisk timing modules, including ways to potentially fix this problem, please see https://wiki.asterisk.org/wiki/display/AST/Timing+Interfaces\n"
static int dahdi_test_timer(void)

188
res/res_timing_kqueue.c
View File

@@ -48,14 +48,15 @@
static void *timing_funcs_handle;
static int kqueue_timer_open(void);
static void kqueue_timer_close(int handle);
static int kqueue_timer_set_rate(int handle, unsigned int rate);
static int kqueue_timer_ack(int handle, unsigned int quantity);
static int kqueue_timer_enable_continuous(int handle);
static int kqueue_timer_disable_continuous(int handle);
static enum ast_timer_event kqueue_timer_get_event(int handle);
static unsigned int kqueue_timer_get_max_rate(int handle);
static void *kqueue_timer_open(void);
static void kqueue_timer_close(void *data);
static int kqueue_timer_set_rate(void *data, unsigned int rate);
static int kqueue_timer_ack(void *data, unsigned int quantity);
static int kqueue_timer_enable_continuous(void *data);
static int kqueue_timer_disable_continuous(void *data);
static enum ast_timer_event kqueue_timer_get_event(void *data);
static unsigned int kqueue_timer_get_max_rate(void *data);
static int kqueue_timer_fd(void *data);
static struct ast_timing_interface kqueue_timing = {
.name = "kqueue",
@@ -68,10 +69,9 @@ static struct ast_timing_interface kqueue_timing = {
.timer_disable_continuous = kqueue_timer_disable_continuous,
.timer_get_event = kqueue_timer_get_event,
.timer_get_max_rate = kqueue_timer_get_max_rate,
.timer_fd = kqueue_timer_fd,
};
static struct ao2_container *kqueue_timers;
struct kqueue_timer {
int handle;
uint64_t nsecs;
@@ -79,73 +79,34 @@ struct kqueue_timer {
unsigned int is_continuous:1;
};
static int kqueue_timer_hash(const void *obj, const int flags)
{
const struct kqueue_timer *timer = obj;
return timer->handle;
}
static int kqueue_timer_cmp(void *obj, void *args, int flags)
{
struct kqueue_timer *timer1 = obj, *timer2 = args;
return timer1->handle == timer2->handle ? CMP_MATCH | CMP_STOP : 0;
}
static void timer_destroy(void *obj)
{
struct kqueue_timer *timer = obj;
close(timer->handle);
}
#define lookup_timer(a) _lookup_timer(a, __FILE__, __LINE__, __PRETTY_FUNCTION__)
static struct kqueue_timer *_lookup_timer(int handle, const char *file, int line, const char *func)
{
struct kqueue_timer *our_timer, find_helper = {
.handle = handle,
};
if (!(our_timer = ao2_find(kqueue_timers, &find_helper, OBJ_POINTER))) {
ast_log(__LOG_ERROR, file, line, func, "Couldn't find timer with handle %d\n", handle);
/* API says we set errno */
errno = ESRCH;
return NULL;
}
return our_timer;
}
static int kqueue_timer_open(void)
static void *kqueue_timer_open(void)
{
struct kqueue_timer *timer;
int handle;
if (!(timer = ao2_alloc(sizeof(*timer), timer_destroy))) {
ast_log(LOG_ERROR, "Could not allocate memory for kqueue_timer structure\n");
return -1;
}
if ((handle = kqueue()) < 0) {
if ((timer->handle = kqueue()) < 0) {
ast_log(LOG_ERROR, "Failed to create kqueue timer: %s\n", strerror(errno));
ao2_ref(timer, -1);
return -1;
}
timer->handle = handle;
ao2_link(kqueue_timers, timer);
/* Get rid of the reference from the allocation */
ao2_ref(timer, -1);
return handle;
return timer;
}
static void kqueue_timer_close(int handle)
static void kqueue_timer_close(void *data)
{
struct kqueue_timer *our_timer;
struct kqueue_timer *timer = data;
if (!(our_timer = lookup_timer(handle))) {
return;
}
ao2_unlink(kqueue_timers, our_timer);
ao2_ref(our_timer, -1);
ao2_ref(timer, -1);
}
static void kqueue_set_nsecs(struct kqueue_timer *our_timer, uint64_t nsecs)
@@ -183,107 +144,90 @@ static void kqueue_set_nsecs(struct kqueue_timer *our_timer, uint64_t nsecs)
#endif
}
static int kqueue_timer_set_rate(int handle, unsigned int rate)
static int kqueue_timer_set_rate(void *data, unsigned int rate)
{
struct kqueue_timer *our_timer;
struct kqueue_timer *timer = data;
if (!(our_timer = lookup_timer(handle))) {
return -1;
}
kqueue_set_nsecs(our_timer, (our_timer->nsecs = rate ? (long) (1000000000 / rate) : 0L));
ao2_ref(our_timer, -1);
kqueue_set_nsecs(timer, (timer->nsecs = rate ? (long) (1000000000 / rate) : 0L));
return 0;
}
static int kqueue_timer_ack(int handle, unsigned int quantity)
static int kqueue_timer_ack(void *data, unsigned int quantity)
{
struct kqueue_timer *our_timer;
struct kqueue_timer *timer = data;
if (!(our_timer = lookup_timer(handle))) {
return -1;
}
if (our_timer->unacked < quantity) {
if (timer->unacked < quantity) {
ast_debug(1, "Acking more events than have expired?!!\n");
our_timer->unacked = 0;
ao2_ref(our_timer, -1);
timer->unacked = 0;
return -1;
} else {
our_timer->unacked -= quantity;
timer->unacked -= quantity;
}
ao2_ref(our_timer, -1);
return 0;
}
static int kqueue_timer_enable_continuous(int handle)
static int kqueue_timer_enable_continuous(void *data)
{
struct kqueue_timer *our_timer;
struct kqueue_timer *timer = data;
if (!(our_timer = lookup_timer(handle))) {
return -1;
}
kqueue_set_nsecs(timer, 1);
timer->is_continuous = 1;
timer->unacked = 0;
kqueue_set_nsecs(our_timer, 1);
our_timer->is_continuous = 1;
our_timer->unacked = 0;
ao2_ref(our_timer, -1);
return 0;
}
static int kqueue_timer_disable_continuous(int handle)
static int kqueue_timer_disable_continuous(void *data)
{
struct kqueue_timer *our_timer;
struct kqueue_timer *timer = data;
if (!(our_timer = lookup_timer(handle))) {
return -1;
}
kqueue_set_nsecs(timer, timer->nsecs);
timer->is_continuous = 0;
timer->unacked = 0;
kqueue_set_nsecs(our_timer, our_timer->nsecs);
our_timer->is_continuous = 0;
our_timer->unacked = 0;
ao2_ref(our_timer, -1);
return 0;
}
static enum ast_timer_event kqueue_timer_get_event(int handle)
static enum ast_timer_event kqueue_timer_get_event(void *data)
{
struct kqueue_timer *timer = data;
enum ast_timer_event res = -1;
struct kqueue_timer *our_timer;
struct timespec sixty_seconds = { 60, 0 };
struct kevent kev;
if (!(our_timer = lookup_timer(handle))) {
return -1;
}
/* If we have non-ACKed events, just return immediately */
if (our_timer->unacked == 0) {
if (kevent(handle, NULL, 0, &kev, 1, &sixty_seconds) > 0) {
our_timer->unacked += kev.data;
if (timer->unacked == 0) {
if (kevent(timer->handle, NULL, 0, &kev, 1, &sixty_seconds) > 0) {
timer->unacked += kev.data;
}
}
if (our_timer->unacked > 0) {
res = our_timer->is_continuous ? AST_TIMING_EVENT_CONTINUOUS : AST_TIMING_EVENT_EXPIRED;
if (timer->unacked > 0) {
res = timer->is_continuous ? AST_TIMING_EVENT_CONTINUOUS : AST_TIMING_EVENT_EXPIRED;
}
ao2_ref(our_timer, -1);
return res;
}
static unsigned int kqueue_timer_get_max_rate(int handle)
static unsigned int kqueue_timer_get_max_rate(void *data)
{
/* Actually, the max rate is 2^64-1 seconds, but that's not representable in a 32-bit integer. */
return UINT_MAX;
}
static int kqueue_timer_fd(void *data)
{
struct kqueue_timer *timer = data;
return timer->handle;
}
#ifdef TEST_FRAMEWORK
AST_TEST_DEFINE(test_kqueue_timing)
{
int res = AST_TEST_PASS, handle, i;
int res = AST_TEST_PASS, i;
uint64_t diff;
struct pollfd pfd = { 0, POLLIN, 0 };
struct kqueue_timer *kt;
@@ -300,14 +244,14 @@ AST_TEST_DEFINE(test_kqueue_timing)
break;
}
if (!(handle = kqueue_timer_open())) {
if (!(kt = kqueue_timer_open())) {
ast_test_status_update(test, "Cannot open timer!\n");
return AST_TEST_FAIL;
}
do {
pfd.fd = handle;
if (kqueue_timer_set_rate(handle, 1000)) {
pfd.fd = ast_timer_fd(kt);
if (kqueue_timer_set_rate(kt, 1000)) {
ast_test_status_update(test, "Cannot set timer rate to 1000/s\n");
res = AST_TEST_FAIL;
break;
@@ -322,12 +266,7 @@ AST_TEST_DEFINE(test_kqueue_timing)
res = AST_TEST_FAIL;
break;
}
if (!(kt = lookup_timer(handle))) {
ast_test_status_update(test, "Could not find timer structure in container?!!\n");
res = AST_TEST_FAIL;
break;
}
if (kqueue_timer_get_event(handle) <= 0) {
if (kqueue_timer_get_event(kt) <= 0) {
ast_test_status_update(test, "No events generated after a poll returned successfully?!!\n");
res = AST_TEST_FAIL;
break;
@@ -339,7 +278,7 @@ AST_TEST_DEFINE(test_kqueue_timing)
break;
}
#endif
kqueue_timer_enable_continuous(handle);
kqueue_timer_enable_continuous(kt);
start = ast_tvnow();
for (i = 0; i < 100; i++) {
if (ast_poll(&pfd, 1, 1000) < 1) {
@@ -347,7 +286,7 @@ AST_TEST_DEFINE(test_kqueue_timing)
res = AST_TEST_FAIL;
break;
}
if (kqueue_timer_get_event(handle) <= 0) {
if (kqueue_timer_get_event(kt) <= 0) {
ast_test_status_update(test, "No events generated in continuous mode after 1 microsecond?!!\n");
res = AST_TEST_FAIL;
break;
@@ -362,7 +301,7 @@ AST_TEST_DEFINE(test_kqueue_timing)
}
*/
} while (0);
kqueue_timer_close(handle);
kqueue_timer_close(kt);
return res;
}
#endif
@@ -379,12 +318,7 @@ AST_TEST_DEFINE(test_kqueue_timing)
*/
static int load_module(void)
{
if (!(kqueue_timers = ao2_container_alloc(563, kqueue_timer_hash, kqueue_timer_cmp))) {
return AST_MODULE_LOAD_DECLINE;
}
if (!(timing_funcs_handle = ast_register_timing_interface(&kqueue_timing))) {
ao2_ref(kqueue_timers, -1);
return AST_MODULE_LOAD_DECLINE;
}
@@ -394,15 +328,9 @@ static int load_module(void)
static int unload_module(void)
{
int res;
AST_TEST_UNREGISTER(test_kqueue_timing);
if (!(res = ast_unregister_timing_interface(timing_funcs_handle))) {
ao2_ref(kqueue_timers, -1);
kqueue_timers = NULL;
}
return res;
return ast_unregister_timing_interface(timing_funcs_handle);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "KQueue Timing Interface",

114
res/res_timing_pthread.c
View File

@@ -45,14 +45,15 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$");
static void *timing_funcs_handle;
static int pthread_timer_open(void);
static void pthread_timer_close(int handle);
static int pthread_timer_set_rate(int handle, unsigned int rate);
static int pthread_timer_ack(int handle, unsigned int quantity);
static int pthread_timer_enable_continuous(int handle);
static int pthread_timer_disable_continuous(int handle);
static enum ast_timer_event pthread_timer_get_event(int handle);
static unsigned int pthread_timer_get_max_rate(int handle);
static void *pthread_timer_open(void);
static void pthread_timer_close(void *data);
static int pthread_timer_set_rate(void *data, unsigned int rate);
static int pthread_timer_ack(void *data, unsigned int quantity);
static int pthread_timer_enable_continuous(void *data);
static int pthread_timer_disable_continuous(void *data);
static enum ast_timer_event pthread_timer_get_event(void *data);
static unsigned int pthread_timer_get_max_rate(void *data);
static int pthread_timer_fd(void *data);
static struct ast_timing_interface pthread_timing = {
.name = "pthread",
@@ -65,6 +66,7 @@ static struct ast_timing_interface pthread_timing = {
.timer_disable_continuous = pthread_timer_disable_continuous,
.timer_get_event = pthread_timer_get_event,
.timer_get_max_rate = pthread_timer_get_max_rate,
.timer_fd = pthread_timer_fd,
};
/* 1 tick / 10 ms */
@@ -97,7 +99,6 @@ struct pthread_timer {
};
static void pthread_timer_destructor(void *obj);
static struct pthread_timer *find_timer(int handle, int unlinkobj);
static void signal_pipe(struct pthread_timer *timer);
static void unsignal_pipe(struct pthread_timer *timer);
static void ack_ticks(struct pthread_timer *timer, unsigned int num);
@@ -112,15 +113,14 @@ static struct {
unsigned int stop:1;
} timing_thread;
static int pthread_timer_open(void)
static void *pthread_timer_open(void)
{
struct pthread_timer *timer;
int fd;
int i;
if (!(timer = ao2_alloc(sizeof(*timer), pthread_timer_destructor))) {
errno = ENOMEM;
return -1;
return NULL;
}
timer->pipe[PIPE_READ] = timer->pipe[PIPE_WRITE] = -1;
@@ -128,7 +128,7 @@ static int pthread_timer_open(void)
if (pipe(timer->pipe)) {
ao2_ref(timer, -1);
return -1;
return NULL;
}
for (i = 0; i < ARRAY_LEN(timer->pipe); ++i) {
@@ -146,32 +146,19 @@ static int pthread_timer_open(void)
ao2_link(pthread_timers, timer);
ao2_unlock(pthread_timers);
fd = timer->pipe[PIPE_READ];
ao2_ref(timer, -1);
return fd;
return timer;
}
static void pthread_timer_close(int handle)
static void pthread_timer_close(void *data)
{
struct pthread_timer *timer;
if (!(timer = find_timer(handle, 1))) {
return;
}
struct pthread_timer *timer = data;
ao2_ref(timer, -1);
}
static int pthread_timer_set_rate(int handle, unsigned int rate)
static int pthread_timer_set_rate(void *data, unsigned int rate)
{
struct pthread_timer *timer;
if (!(timer = find_timer(handle, 0))) {
errno = EINVAL;
return -1;
}
struct pthread_timer *timer = data;
if (rate > MAX_RATE) {
ast_log(LOG_ERROR, "res_timing_pthread only supports timers at a "
@@ -195,38 +182,25 @@ static int pthread_timer_set_rate(int handle, unsigned int rate)
ao2_unlock(timer);
ao2_ref(timer, -1);
return 0;
}
static int pthread_timer_ack(int handle, unsigned int quantity)
static int pthread_timer_ack(void *data, unsigned int quantity)
{
struct pthread_timer *timer;
struct pthread_timer *timer = data;
ast_assert(quantity > 0);
if (!(timer = find_timer(handle, 0))) {
return -1;
}
ao2_lock(timer);
ack_ticks(timer, quantity);
ao2_unlock(timer);
ao2_ref(timer, -1);
return 0;
}
static int pthread_timer_enable_continuous(int handle)
static int pthread_timer_enable_continuous(void *data)
{
struct pthread_timer *timer;
if (!(timer = find_timer(handle, 0))) {
errno = EINVAL;
return -1;
}
struct pthread_timer *timer = data;
ao2_lock(timer);
if (!timer->continuous) {
@@ -235,19 +209,12 @@ static int pthread_timer_enable_continuous(int handle)
}
ao2_unlock(timer);
ao2_ref(timer, -1);
return 0;
}
static int pthread_timer_disable_continuous(int handle)
static int pthread_timer_disable_continuous(void *data)
{
struct pthread_timer *timer;
if (!(timer = find_timer(handle, 0))) {
errno = EINVAL;
return -1;
}
struct pthread_timer *timer = data;
ao2_lock(timer);
if (timer->continuous) {
@@ -256,54 +223,33 @@ static int pthread_timer_disable_continuous(int handle)
}
ao2_unlock(timer);
ao2_ref(timer, -1);
return 0;
}
static enum ast_timer_event pthread_timer_get_event(int handle)
static enum ast_timer_event pthread_timer_get_event(void *data)
{
struct pthread_timer *timer;
struct pthread_timer *timer = data;
enum ast_timer_event res = AST_TIMING_EVENT_EXPIRED;
if (!(timer = find_timer(handle, 0))) {
return res;
}
ao2_lock(timer);
if (timer->continuous) {
res = AST_TIMING_EVENT_CONTINUOUS;
}
ao2_unlock(timer);
ao2_ref(timer, -1);
return res;
}
static unsigned int pthread_timer_get_max_rate(int handle)
static unsigned int pthread_timer_get_max_rate(void *data)
{
return MAX_RATE;
}
static struct pthread_timer *find_timer(int handle, int unlinkobj)
static int pthread_timer_fd(void *data)
{
struct pthread_timer *timer;
struct pthread_timer tmp_timer;
int flags = OBJ_POINTER;
struct pthread_timer *timer = data;
tmp_timer.pipe[PIPE_READ] = handle;
if (unlinkobj) {
flags |= OBJ_UNLINK;
}
if (!(timer = ao2_find(pthread_timers, &tmp_timer, flags))) {
ast_assert(timer != NULL);
return NULL;
}
return timer;
return timer->pipe[PIPE_READ];
}
static void pthread_timer_destructor(void *obj)

250
res/res_timing_timerfd.c
View File

@@ -41,14 +41,15 @@
static void *timing_funcs_handle;
static int timerfd_timer_open(void);
static void timerfd_timer_close(int handle);
static int timerfd_timer_set_rate(int handle, unsigned int rate);
static int timerfd_timer_ack(int handle, unsigned int quantity);
static int timerfd_timer_enable_continuous(int handle);
static int timerfd_timer_disable_continuous(int handle);
static enum ast_timer_event timerfd_timer_get_event(int handle);
static unsigned int timerfd_timer_get_max_rate(int handle);
static void *timerfd_timer_open(void);
static void timerfd_timer_close(void *data);
static int timerfd_timer_set_rate(void *data, unsigned int rate);
static int timerfd_timer_ack(void *data, unsigned int quantity);
static int timerfd_timer_enable_continuous(void *data);
static int timerfd_timer_disable_continuous(void *data);
static enum ast_timer_event timerfd_timer_get_event(void *data);
static unsigned int timerfd_timer_get_max_rate(void *data);
static int timerfd_timer_fd(void *data);
static struct ast_timing_interface timerfd_timing = {
.name = "timerfd",
@@ -61,152 +62,93 @@ static struct ast_timing_interface timerfd_timing = {
.timer_disable_continuous = timerfd_timer_disable_continuous,
.timer_get_event = timerfd_timer_get_event,
.timer_get_max_rate = timerfd_timer_get_max_rate,
.timer_fd = timerfd_timer_fd,
};
static struct ao2_container *timerfd_timers;
#define TIMERFD_TIMER_BUCKETS 563
#define TIMERFD_MAX_RATE 1000
struct timerfd_timer {
int handle;
int fd;
struct itimerspec saved_timer;
unsigned int is_continuous:1;
};
static int timerfd_timer_hash(const void *obj, const int flags)
{
const struct timerfd_timer *timer = obj;
return timer->handle;
}
static int timerfd_timer_cmp(void *obj, void *args, int flags)
{
struct timerfd_timer *timer1 = obj, *timer2 = args;
return timer1->handle == timer2->handle ? CMP_MATCH | CMP_STOP : 0;
}
static void timer_destroy(void *obj)
{
struct timerfd_timer *timer = obj;
close(timer->handle);
timer->handle = -1;
close(timer->fd);
}
static int timerfd_timer_open(void)
static void *timerfd_timer_open(void)
{
struct timerfd_timer *timer;
int handle;
if (!(timer = ao2_alloc(sizeof(*timer), timer_destroy))) {
ast_log(LOG_ERROR, "Could not allocate memory for timerfd_timer structure\n");
return -1;
return NULL;
}
if ((handle = timerfd_create(CLOCK_MONOTONIC, 0)) < 0) {
if ((timer->fd = timerfd_create(CLOCK_MONOTONIC, 0)) < 0) {
ast_log(LOG_ERROR, "Failed to create timerfd timer: %s\n", strerror(errno));
ao2_ref(timer, -1);
return -1;
return NULL;
}
timer->handle = handle;
ao2_link(timerfd_timers, timer);
/* Get rid of the reference from the allocation */
ao2_ref(timer, -1);
return handle;
return timer;
}
static void timerfd_timer_close(int handle)
static void timerfd_timer_close(void *data)
{
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to close timerfd handle -1");
return;
ao2_ref(data, -1);
}
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find timer with handle %d\n", handle);
return;
}
ao2_unlink(timerfd_timers, our_timer);
ao2_ref(our_timer, -1);
}
static int timerfd_timer_set_rate(int handle, unsigned int rate)
static int timerfd_timer_set_rate(void *data, unsigned int rate)
{
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
struct timerfd_timer *timer = data;
int res = 0;
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to set rate on timerfd handle -1");
return -1;
ao2_lock(timer);
timer->saved_timer.it_value.tv_sec = 0;
timer->saved_timer.it_value.tv_nsec = rate ? (long) (1000000000 / rate) : 0L;
timer->saved_timer.it_interval.tv_sec = timer->saved_timer.it_value.tv_sec;
timer->saved_timer.it_interval.tv_nsec = timer->saved_timer.it_value.tv_nsec;
if (!timer->is_continuous) {
res = timerfd_settime(timer->fd, 0, &timer->saved_timer, NULL);
}
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find timer with handle %d\n", handle);
return -1;
}
ao2_lock(our_timer);
our_timer->saved_timer.it_value.tv_sec = 0;
our_timer->saved_timer.it_value.tv_nsec = rate ? (long) (1000000000 / rate) : 0L;
our_timer->saved_timer.it_interval.tv_sec = our_timer->saved_timer.it_value.tv_sec;
our_timer->saved_timer.it_interval.tv_nsec = our_timer->saved_timer.it_value.tv_nsec;
if (!our_timer->is_continuous) {
res = timerfd_settime(handle, 0, &our_timer->saved_timer, NULL);
}
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
ao2_unlock(timer);
return res;
}
static int timerfd_timer_ack(int handle, unsigned int quantity)
static int timerfd_timer_ack(void *data, unsigned int quantity)
{
struct timerfd_timer *timer = data;
uint64_t expirations;
int read_result = 0;
int res = 0;
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to ack timerfd handle -1");
return -1;
}
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find a timer with handle %d\n", handle);
return -1;
}
ao2_lock(our_timer);
ao2_lock(timer);
do {
struct itimerspec timer_status;
if (timerfd_gettime(handle, &timer_status)) {
ast_log(LOG_ERROR, "Call to timerfd_gettime() using handle %d error: %s\n", handle, strerror(errno));
if (timerfd_gettime(timer->fd, &timer_status)) {
ast_log(LOG_ERROR, "Call to timerfd_gettime() using handle %d error: %s\n", timer->fd, strerror(errno));
expirations = 0;
res = -1;
break;
}
if (timer_status.it_value.tv_sec == 0 && timer_status.it_value.tv_nsec == 0) {
ast_debug(1, "Avoiding read on disarmed timerfd %d\n", handle);
ast_debug(1, "Avoiding read on disarmed timerfd %d\n", timer->fd);
expirations = 0;
break;
}
read_result = read(handle, &expirations, sizeof(expirations));
read_result = read(timer->fd, &expirations, sizeof(expirations));
if (read_result == -1) {
if (errno == EINTR || errno == EAGAIN) {
continue;
@@ -218,121 +160,93 @@ static int timerfd_timer_ack(int handle, unsigned int quantity)
}
} while (read_result != sizeof(expirations));
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
ao2_unlock(timer);
if (expirations != quantity) {
ast_debug(2, "Expected to acknowledge %u ticks but got %llu instead\n", quantity, (unsigned long long) expirations);
}
return res;
}
static int timerfd_timer_enable_continuous(int handle)
static int timerfd_timer_enable_continuous(void *data)
{
struct timerfd_timer *timer = data;
int res;
struct itimerspec continuous_timer = {
static const struct itimerspec continuous_timer = {
.it_value.tv_nsec = 1L,
};
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to enable timerfd handle -1");
return -1;
}
ao2_lock(timer);
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find timer with handle %d\n", handle);
return -1;
}
ao2_lock(our_timer);
if (our_timer->is_continuous) {
if (timer->is_continuous) {
/*It's already in continous mode, no need to do
* anything further
*/
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
ao2_unlock(timer);
return 0;
}
res = timerfd_settime(handle, 0, &continuous_timer, &our_timer->saved_timer);
our_timer->is_continuous = 1;
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
res = timerfd_settime(timer->fd, 0, &continuous_timer, &timer->saved_timer);
timer->is_continuous = 1;
ao2_unlock(timer);
return res;
}
static int timerfd_timer_disable_continuous(int handle)
static int timerfd_timer_disable_continuous(void *data)
{
struct timerfd_timer *timer = data;
int res;
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to disable timerfd handle -1");
return -1;
}
ao2_lock(timer);
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find timer with handle %d\n", handle);
return -1;
}
ao2_lock(our_timer);
if (!our_timer->is_continuous) {
if (!timer->is_continuous) {
/* No reason to do anything if we're not
* in continuous mode
*/
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
ao2_unlock(timer);
return 0;
}
res = timerfd_settime(handle, 0, &our_timer->saved_timer, NULL);
our_timer->is_continuous = 0;
memset(&our_timer->saved_timer, 0, sizeof(our_timer->saved_timer));
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
res = timerfd_settime(timer->fd, 0, &timer->saved_timer, NULL);
timer->is_continuous = 0;
memset(&timer->saved_timer, 0, sizeof(timer->saved_timer));
ao2_unlock(timer);
return res;
}
static enum ast_timer_event timerfd_timer_get_event(int handle)
static enum ast_timer_event timerfd_timer_get_event(void *data)
{
struct timerfd_timer *timer = data;
enum ast_timer_event res;
struct timerfd_timer *our_timer, find_helper = {
.handle = handle,
};
if (handle == -1) {
ast_log(LOG_ERROR, "Attempting to get event from timerfd handle -1");
return -1;
}
ao2_lock(timer);
if (!(our_timer = ao2_find(timerfd_timers, &find_helper, OBJ_POINTER))) {
ast_log(LOG_ERROR, "Couldn't find timer with handle %d\n", handle);
return -1;
}
ao2_lock(our_timer);
if (our_timer->is_continuous) {
if (timer->is_continuous) {
res = AST_TIMING_EVENT_CONTINUOUS;
} else {
res = AST_TIMING_EVENT_EXPIRED;
}
ao2_unlock(our_timer);
ao2_ref(our_timer, -1);
ao2_unlock(timer);
return res;
}
static unsigned int timerfd_timer_get_max_rate(int handle)
static unsigned int timerfd_timer_get_max_rate(void *data)
{
return TIMERFD_MAX_RATE;
}
static int timerfd_timer_fd(void *data)
{
struct timerfd_timer *timer = data;
return timer->fd;
}
static int load_module(void)
{
int fd;
@@ -345,12 +259,7 @@ static int load_module(void)
close(fd);
if (!(timerfd_timers = ao2_container_alloc(TIMERFD_TIMER_BUCKETS, timerfd_timer_hash, timerfd_timer_cmp))) {
return AST_MODULE_LOAD_DECLINE;
}
if (!(timing_funcs_handle = ast_register_timing_interface(&timerfd_timing))) {
ao2_ref(timerfd_timers, -1);
return AST_MODULE_LOAD_DECLINE;
}
@@ -359,14 +268,7 @@ static int load_module(void)
static int unload_module(void)
{
int res;
if (!(res = ast_unregister_timing_interface(timing_funcs_handle))) {
ao2_ref(timerfd_timers, -1);
timerfd_timers = NULL;
}
return res;
return ast_unregister_timing_interface(timing_funcs_handle);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Timerfd Timing Interface",