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/* EINA - EFL data type library
* Copyright (C) 2017 Carsten Haitzler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
# ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
# endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#ifdef HAVE_SYS_EPOLL_H
# include <sys/epoll.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#include <signal.h>
#include <time.h>
#include <fcntl.h>
#include "eina_debug.h"
#include "eina_debug_private.h"
static Eina_Spinlock _lock;
struct _Eina_Debug_Timer
{
unsigned int rel_time;
unsigned int timeout;
Eina_Debug_Timer_Cb cb;
void *data;
};
static Eina_List *_timers = NULL;
static Eina_Bool _thread_runs = EINA_FALSE;
static pthread_t _thread;
static int pipeToThread[2];
static void
_timer_append(Eina_Debug_Timer *t)
{
Eina_Debug_Timer *t2;
Eina_List *itr;
unsigned int prev_time = 0;
char c = '\0';
EINA_LIST_FOREACH(_timers, itr, t2)
{
if (t2->timeout > t->timeout) goto end;
prev_time = t2->timeout;
}
t2 = NULL;
end:
t->rel_time = t->timeout - prev_time;
if (!t2) _timers = eina_list_append(_timers, t);
else _timers = eina_list_prepend_relative(_timers, t, t2);
if (write(pipeToThread[1], &c, 1) != 1)
e_debug("EINA DEBUG ERROR: Can't wake up thread for debug timer");
}
static void *
_monitor(void *_data EINA_UNUSED)
{
#ifdef HAVE_SYS_EPOLL_H
#define MAX_EVENTS 4
struct epoll_event event;
struct epoll_event events[MAX_EVENTS];
int epfd = epoll_create(MAX_EVENTS), ret;
event.data.fd = pipeToThread[0];
event.events = EPOLLIN;
ret = epoll_ctl(epfd, EPOLL_CTL_ADD, event.data.fd, &event);
if (ret) perror("epoll_ctl/add");
#ifdef EINA_HAVE_PTHREAD_SETNAME
# ifndef __linux__
pthread_set_name_np
# else
pthread_setname_np
# endif
(pthread_self(), "Edbg-tim");
#endif
while (1)
{
int timeout = -1; //in milliseconds
pthread_testcancel();
eina_spinlock_take(&_lock);
if (_timers)
{
Eina_Debug_Timer *t = eina_list_data_get(_timers);
timeout = t->timeout;
}
eina_spinlock_release(&_lock);
ret = epoll_wait(epfd, events, MAX_EVENTS, timeout);
pthread_testcancel();
/* Some timer has been add/removed or we need to exit */
if (ret)
{
char c;
if (read(pipeToThread[0], &c, 1) != 1) break;
}
else
{
Eina_List *itr, *itr2, *renew = NULL;
Eina_Debug_Timer *t;
eina_spinlock_take(&_lock);
EINA_LIST_FOREACH_SAFE(_timers, itr, itr2, t)
{
if (itr == _timers || t->rel_time == 0)
{
_timers = eina_list_remove(_timers, t);
if (t->cb(t->data)) renew = eina_list_append(renew, t);
else free(t);
}
}
EINA_LIST_FREE(renew, t) _timer_append(t);
eina_spinlock_release(&_lock);
}
}
#endif
_thread_runs = EINA_FALSE;
close(pipeToThread[0]);
close(pipeToThread[1]);
return NULL;
}
EAPI Eina_Debug_Timer *
eina_debug_timer_add(unsigned int timeout_ms, Eina_Debug_Timer_Cb cb, void *data)
{
if (!cb || !timeout_ms) return NULL;
Eina_Debug_Timer *t = calloc(1, sizeof(*t));
t->cb = cb;
t->data = data;
t->timeout = timeout_ms;
eina_spinlock_take(&_lock);
_timer_append(t);
if (!_thread_runs)
{
#ifndef _WIN32
sigset_t oldset, newset;
sigemptyset(&newset);
sigaddset(&newset, SIGPIPE);
sigaddset(&newset, SIGALRM);
sigaddset(&newset, SIGCHLD);
sigaddset(&newset, SIGUSR1);
sigaddset(&newset, SIGUSR2);
sigaddset(&newset, SIGHUP);
sigaddset(&newset, SIGQUIT);
sigaddset(&newset, SIGINT);
sigaddset(&newset, SIGTERM);
# ifdef SIGPWR
sigaddset(&newset, SIGPWR);
# endif
pthread_sigmask(SIG_BLOCK, &newset, &oldset);
#endif
int err = pthread_create(&_thread, NULL, _monitor, NULL);
#ifndef _WIN32
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
#endif
if (err != 0)
{
e_debug("EINA DEBUG ERROR: Can't create debug timer thread!");
abort();
}
_thread_runs = EINA_TRUE;
}
eina_spinlock_release(&_lock);
return t;
}
EAPI void
eina_debug_timer_del(Eina_Debug_Timer *t)
{
eina_spinlock_take(&_lock);
Eina_List *itr = eina_list_data_find_list(_timers, t);
if (itr)
{
_timers = eina_list_remove_list(_timers, itr);
free(t);
}
eina_spinlock_release(&_lock);
}
Eina_Bool
_eina_debug_timer_init(void)
{
eina_spinlock_new(&_lock);
#ifndef _WIN32
if (pipe(pipeToThread) == -1)
return EINA_FALSE;
#endif
return EINA_TRUE;
}
Eina_Bool
_eina_debug_timer_shutdown(void)
{
Eina_Debug_Timer *t;
eina_spinlock_take(&_lock);
EINA_LIST_FREE(_timers, t)
free(t);
close(pipeToThread[0]);
close(pipeToThread[1]);
if (_thread_runs)
pthread_cancel(_thread);
_thread_runs = 0;
eina_spinlock_release(&_lock);
eina_spinlock_free(&_lock);
return EINA_TRUE;
}
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