git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@234572 65c4cc65-6c06-0410-ace0-fbb531ad65f3
291 lines
6.1 KiB
C
291 lines
6.1 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2008 - 2009, Digium, Inc.
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*
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* Kevin P. Fleming <kpfleming@digium.com>
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Timing source management
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*
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* \author Kevin P. Fleming <kpfleming@digium.com>
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* \author Russell Bryant <russell@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/_private.h"
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#include "asterisk/timing.h"
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#include "asterisk/lock.h"
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#include "asterisk/cli.h"
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#include "asterisk/utils.h"
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#include "asterisk/time.h"
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#include "asterisk/heap.h"
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#include "asterisk/module.h"
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#include "asterisk/poll-compat.h"
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struct timing_holder {
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/*! Do _not_ move this from the beginning of the struct. */
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ssize_t __heap_index;
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struct ast_module *mod;
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struct ast_timing_interface *iface;
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};
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static struct ast_heap *timing_interfaces;
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struct ast_timer {
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int fd;
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struct timing_holder *holder;
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};
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static int timing_holder_cmp(void *_h1, void *_h2)
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{
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struct timing_holder *h1 = _h1;
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struct timing_holder *h2 = _h2;
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if (h1->iface->priority > h2->iface->priority) {
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return 1;
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} else if (h1->iface->priority == h2->iface->priority) {
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return 0;
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} else {
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return -1;
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}
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}
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void *_ast_register_timing_interface(struct ast_timing_interface *funcs,
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struct ast_module *mod)
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{
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struct timing_holder *h;
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if (!funcs->timer_open ||
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!funcs->timer_close ||
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!funcs->timer_set_rate ||
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!funcs->timer_ack ||
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!funcs->timer_get_event ||
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!funcs->timer_get_max_rate ||
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!funcs->timer_enable_continuous ||
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!funcs->timer_disable_continuous) {
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return NULL;
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}
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if (!(h = ast_calloc(1, sizeof(*h)))) {
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return NULL;
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}
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h->iface = funcs;
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h->mod = mod;
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ast_heap_wrlock(timing_interfaces);
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ast_heap_push(timing_interfaces, h);
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ast_heap_unlock(timing_interfaces);
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return h;
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}
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int ast_unregister_timing_interface(void *handle)
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{
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struct timing_holder *h = handle;
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int res = -1;
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ast_heap_wrlock(timing_interfaces);
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h = ast_heap_remove(timing_interfaces, h);
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ast_heap_unlock(timing_interfaces);
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if (h) {
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ast_free(h);
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h = NULL;
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res = 0;
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}
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return res;
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}
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struct ast_timer *ast_timer_open(void)
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{
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int fd = -1;
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struct timing_holder *h;
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struct ast_timer *t = NULL;
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ast_heap_rdlock(timing_interfaces);
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if ((h = ast_heap_peek(timing_interfaces, 1))) {
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fd = h->iface->timer_open();
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ast_module_ref(h->mod);
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}
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if (fd != -1) {
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if (!(t = ast_calloc(1, sizeof(*t)))) {
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h->iface->timer_close(fd);
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} else {
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t->fd = fd;
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t->holder = h;
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}
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}
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ast_heap_unlock(timing_interfaces);
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return t;
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}
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void ast_timer_close(struct ast_timer *handle)
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{
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handle->holder->iface->timer_close(handle->fd);
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ast_module_unref(handle->holder->mod);
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ast_free(handle);
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}
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int ast_timer_fd(const struct ast_timer *handle)
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{
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return handle->fd;
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}
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int ast_timer_set_rate(const struct ast_timer *handle, unsigned int rate)
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{
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int res = -1;
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res = handle->holder->iface->timer_set_rate(handle->fd, rate);
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return res;
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}
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void ast_timer_ack(const struct ast_timer *handle, unsigned int quantity)
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{
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handle->holder->iface->timer_ack(handle->fd, quantity);
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}
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int ast_timer_enable_continuous(const struct ast_timer *handle)
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{
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int res = -1;
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res = handle->holder->iface->timer_enable_continuous(handle->fd);
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return res;
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}
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int ast_timer_disable_continuous(const struct ast_timer *handle)
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{
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int res = -1;
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res = handle->holder->iface->timer_disable_continuous(handle->fd);
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return res;
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}
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enum ast_timer_event ast_timer_get_event(const struct ast_timer *handle)
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{
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enum ast_timer_event res = -1;
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res = handle->holder->iface->timer_get_event(handle->fd);
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return res;
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}
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unsigned int ast_timer_get_max_rate(const struct ast_timer *handle)
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{
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unsigned int res = 0;
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res = handle->holder->iface->timer_get_max_rate(handle->fd);
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return res;
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}
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static char *timing_test(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct ast_timer *timer;
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int count = 0;
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struct timeval start, end;
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unsigned int test_rate = 50;
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switch (cmd) {
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case CLI_INIT:
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e->command = "timing test";
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e->usage = "Usage: timing test <rate>\n"
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" Test a timer with a specified rate, 50/sec by default.\n"
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"";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != 2 && a->argc != 3) {
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return CLI_SHOWUSAGE;
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}
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if (a->argc == 3) {
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unsigned int rate;
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if (sscanf(a->argv[2], "%30u", &rate) == 1) {
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test_rate = rate;
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} else {
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ast_cli(a->fd, "Invalid rate '%s', using default of %u\n", a->argv[2], test_rate);
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}
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}
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ast_cli(a->fd, "Attempting to test a timer with %u ticks per second.\n", test_rate);
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if (!(timer = ast_timer_open())) {
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ast_cli(a->fd, "Failed to open timing fd\n");
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return CLI_FAILURE;
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}
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ast_cli(a->fd, "Using the '%s' timing module for this test.\n", timer->holder->iface->name);
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start = ast_tvnow();
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ast_timer_set_rate(timer, test_rate);
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while (ast_tvdiff_ms((end = ast_tvnow()), start) < 1000) {
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int res;
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struct pollfd pfd = {
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.fd = ast_timer_fd(timer),
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.events = POLLIN | POLLPRI,
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};
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res = ast_poll(&pfd, 1, 100);
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if (res == 1) {
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count++;
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ast_timer_ack(timer, 1);
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} else if (!res) {
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ast_cli(a->fd, "poll() timed out! This is bad.\n");
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} else if (errno != EAGAIN && errno != EINTR) {
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ast_cli(a->fd, "poll() returned error: %s\n", strerror(errno));
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}
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}
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ast_timer_close(timer);
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ast_cli(a->fd, "It has been %d milliseconds, and we got %d timer ticks\n",
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ast_tvdiff_ms(end, start), count);
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return CLI_SUCCESS;
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}
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static struct ast_cli_entry cli_timing[] = {
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AST_CLI_DEFINE(timing_test, "Run a timing test"),
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};
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int ast_timing_init(void)
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{
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if (!(timing_interfaces = ast_heap_create(2, timing_holder_cmp, 0))) {
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return -1;
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}
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return ast_cli_register_multiple(cli_timing, ARRAY_LEN(cli_timing));
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}
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