forked from enlightenment/efl
447 lines
9.3 KiB
C
447 lines
9.3 KiB
C
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#ifndef _MSC_VER
|
|
# include <unistd.h>
|
|
#endif
|
|
#include <errno.h>
|
|
|
|
#include "evas_common_private.h"
|
|
#include "evas_private.h"
|
|
|
|
#ifdef _WIN32
|
|
|
|
# include <winsock2.h>
|
|
|
|
# define pipe_write(fd, buffer, size) send((fd), (char *)(buffer), size, 0)
|
|
# define pipe_read(fd, buffer, size) recv((fd), (char *)(buffer), size, 0)
|
|
# define pipe_close(fd) closesocket(fd)
|
|
# define PIPE_FD_ERROR SOCKET_ERROR
|
|
|
|
#else
|
|
|
|
# include <fcntl.h>
|
|
|
|
# define pipe_write(fd, buffer, size) write((fd), buffer, size)
|
|
# define pipe_read(fd, buffer, size) read((fd), buffer, size)
|
|
# define pipe_close(fd) close(fd)
|
|
# define PIPE_FD_ERROR -1
|
|
|
|
#endif /* ! _WIN32 */
|
|
|
|
|
|
typedef struct _Evas_Event_Async Evas_Event_Async;
|
|
struct _Evas_Event_Async
|
|
{
|
|
const void *target;
|
|
void *event_info;
|
|
Evas_Async_Events_Put_Cb func;
|
|
Evas_Callback_Type type;
|
|
};
|
|
|
|
typedef struct _Evas_Safe_Call Evas_Safe_Call;
|
|
struct _Evas_Safe_Call
|
|
{
|
|
Eina_Condition c;
|
|
Eina_Lock m;
|
|
|
|
int current_id;
|
|
};
|
|
|
|
static Eina_Lock _thread_mutex;
|
|
static Eina_Condition _thread_cond;
|
|
|
|
static Eina_Lock _thread_feedback_mutex;
|
|
static Eina_Condition _thread_feedback_cond;
|
|
|
|
static int _thread_loop = 0;
|
|
|
|
static Eina_Spinlock _thread_id_lock;
|
|
static int _thread_id = -1;
|
|
static int _thread_id_max = 0;
|
|
static int _thread_id_update = 0;
|
|
|
|
static int _fd_write = -1;
|
|
static int _fd_read = -1;
|
|
static pid_t _fd_pid = 0;
|
|
|
|
static Eina_Spinlock async_lock;
|
|
static Eina_Inarray async_queue;
|
|
static Evas_Event_Async *async_queue_cache = NULL;
|
|
static unsigned int async_queue_cache_max = 0;
|
|
|
|
static int _init_evas_event = 0;
|
|
|
|
Eina_Bool
|
|
_evas_fd_close_on_exec(int fd)
|
|
{
|
|
#ifdef HAVE_FCNTL
|
|
int flags;
|
|
|
|
flags = fcntl(fd, F_GETFD);
|
|
if (flags == -1)
|
|
return EINA_FALSE;
|
|
|
|
flags |= FD_CLOEXEC;
|
|
if (fcntl(fd, F_SETFD, flags) == -1)
|
|
return EINA_FALSE;
|
|
return EINA_TRUE;
|
|
#else
|
|
(void) fd;
|
|
return EINA_FALSE;
|
|
#endif
|
|
}
|
|
|
|
int
|
|
evas_async_events_init(void)
|
|
{
|
|
int filedes[2];
|
|
|
|
_init_evas_event++;
|
|
if (_init_evas_event > 1) return _init_evas_event;
|
|
|
|
_fd_pid = getpid();
|
|
|
|
if (pipe(filedes) == -1)
|
|
{
|
|
_init_evas_event = 0;
|
|
return 0;
|
|
}
|
|
|
|
_evas_fd_close_on_exec(filedes[0]);
|
|
_evas_fd_close_on_exec(filedes[1]);
|
|
|
|
_fd_read = filedes[0];
|
|
_fd_write = filedes[1];
|
|
|
|
#ifdef HAVE_FCNTL
|
|
if (fcntl(_fd_read, F_SETFL, O_NONBLOCK) < 0) ERR("Can't set NONBLOCK on async fd");
|
|
#endif
|
|
|
|
eina_spinlock_new(&async_lock);
|
|
eina_inarray_step_set(&async_queue, sizeof (Eina_Inarray), sizeof (Evas_Event_Async), 16);
|
|
|
|
eina_lock_new(&_thread_mutex);
|
|
eina_condition_new(&_thread_cond, &_thread_mutex);
|
|
|
|
eina_lock_new(&_thread_feedback_mutex);
|
|
eina_condition_new(&_thread_feedback_cond, &_thread_feedback_mutex);
|
|
|
|
eina_spinlock_new(&_thread_id_lock);
|
|
|
|
return _init_evas_event;
|
|
}
|
|
|
|
int
|
|
evas_async_events_shutdown(void)
|
|
{
|
|
_init_evas_event--;
|
|
if (_init_evas_event > 0) return _init_evas_event;
|
|
|
|
eina_condition_free(&_thread_cond);
|
|
eina_lock_free(&_thread_mutex);
|
|
eina_condition_free(&_thread_feedback_cond);
|
|
eina_lock_free(&_thread_feedback_mutex);
|
|
eina_spinlock_free(&_thread_id_lock);
|
|
|
|
eina_spinlock_free(&async_lock);
|
|
eina_inarray_flush(&async_queue);
|
|
free(async_queue_cache);
|
|
|
|
pipe_close(_fd_read);
|
|
pipe_close(_fd_write);
|
|
_fd_read = -1;
|
|
_fd_write = -1;
|
|
|
|
return _init_evas_event;
|
|
}
|
|
|
|
static void
|
|
_evas_async_events_fork_handle(void)
|
|
{
|
|
int i, count = _init_evas_event;
|
|
|
|
if (getpid() == _fd_pid) return;
|
|
for (i = 0; i < count; i++) evas_async_events_shutdown();
|
|
for (i = 0; i < count; i++) evas_async_events_init();
|
|
}
|
|
|
|
EAPI int
|
|
evas_async_events_fd_get(void)
|
|
{
|
|
_evas_async_events_fork_handle();
|
|
return _fd_read;
|
|
}
|
|
|
|
static int
|
|
_evas_async_events_process_single(void)
|
|
{
|
|
int ret, wakeup;
|
|
|
|
ret = pipe_read(_fd_read, &wakeup, sizeof(int));
|
|
if (ret < 0)
|
|
{
|
|
switch (errno)
|
|
{
|
|
case EBADF:
|
|
case EINVAL:
|
|
case EIO:
|
|
case EISDIR:
|
|
_fd_read = -1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
if (ret == sizeof(int))
|
|
{
|
|
Evas_Event_Async *ev;
|
|
unsigned int len, max;
|
|
int nr;
|
|
|
|
eina_spinlock_take(&async_lock);
|
|
|
|
ev = async_queue.members;
|
|
async_queue.members = async_queue_cache;
|
|
async_queue_cache = ev;
|
|
|
|
max = async_queue.max;
|
|
async_queue.max = async_queue_cache_max;
|
|
async_queue_cache_max = max;
|
|
|
|
len = async_queue.len;
|
|
async_queue.len = 0;
|
|
|
|
eina_spinlock_release(&async_lock);
|
|
|
|
DBG("Evas async events queue length: %u", len);
|
|
nr = len;
|
|
|
|
while (len > 0)
|
|
{
|
|
if (ev->func) ev->func((void *)ev->target, ev->type, ev->event_info);
|
|
ev++;
|
|
len--;
|
|
}
|
|
|
|
return nr;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
EAPI int
|
|
evas_async_events_process(void)
|
|
{
|
|
int nr, count = 0;
|
|
|
|
if (_fd_read == -1) return -1;
|
|
|
|
_evas_async_events_fork_handle();
|
|
|
|
while ((nr = _evas_async_events_process_single()) > 0) count += nr;
|
|
|
|
evas_cache_image_wakeup();
|
|
|
|
return count;
|
|
}
|
|
|
|
static void
|
|
_evas_async_events_fd_blocking_set(Eina_Bool blocking)
|
|
{
|
|
#ifdef HAVE_FCNTL
|
|
long flags = fcntl(_fd_read, F_GETFL);
|
|
|
|
if (blocking) flags &= ~O_NONBLOCK;
|
|
else flags |= O_NONBLOCK;
|
|
|
|
if (fcntl(_fd_read, F_SETFL, flags) < 0) ERR("cannot set fd flags");
|
|
#else
|
|
(void) blocking;
|
|
#endif
|
|
}
|
|
|
|
EAPI int
|
|
evas_async_events_process_blocking(void)
|
|
{
|
|
int ret;
|
|
|
|
_evas_async_events_fork_handle();
|
|
|
|
_evas_async_events_fd_blocking_set(EINA_TRUE);
|
|
ret = _evas_async_events_process_single();
|
|
evas_cache_image_wakeup(); /* FIXME: is this needed ? */
|
|
_evas_async_events_fd_blocking_set(EINA_FALSE);
|
|
|
|
return ret;
|
|
}
|
|
|
|
EAPI Eina_Bool
|
|
evas_async_events_put(const void *target, Evas_Callback_Type type, void *event_info, Evas_Async_Events_Put_Cb func)
|
|
{
|
|
Evas_Event_Async *ev;
|
|
unsigned int count;
|
|
Eina_Bool ret;
|
|
|
|
if (!func) return EINA_FALSE;
|
|
if (_fd_write == -1) return EINA_FALSE;
|
|
|
|
_evas_async_events_fork_handle();
|
|
|
|
eina_spinlock_take(&async_lock);
|
|
|
|
count = async_queue.len;
|
|
ev = eina_inarray_grow(&async_queue, 1);
|
|
if (!ev)
|
|
{
|
|
eina_spinlock_release(&async_lock);
|
|
return EINA_FALSE;
|
|
}
|
|
|
|
ev->func = func;
|
|
ev->target = target;
|
|
ev->type = type;
|
|
ev->event_info = event_info;
|
|
|
|
eina_spinlock_release(&async_lock);
|
|
|
|
if (count == 0)
|
|
{
|
|
int wakeup = 1;
|
|
ssize_t check;
|
|
|
|
do
|
|
{
|
|
check = pipe_write(_fd_write, &wakeup, sizeof (int));
|
|
}
|
|
while ((check != sizeof (int)) &&
|
|
((errno == EINTR) || (errno == EAGAIN)));
|
|
|
|
if (check == sizeof (int)) ret = EINA_TRUE;
|
|
else
|
|
{
|
|
ret = EINA_FALSE;
|
|
|
|
switch (errno)
|
|
{
|
|
case EBADF:
|
|
case EINVAL:
|
|
case EIO:
|
|
case EPIPE:
|
|
_fd_write = -1;
|
|
}
|
|
}
|
|
}
|
|
else ret = EINA_TRUE;
|
|
|
|
evas_cache_image_wakeup();
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
_evas_thread_main_loop_lock(void *target EINA_UNUSED,
|
|
Evas_Callback_Type type EINA_UNUSED,
|
|
void *event_info)
|
|
{
|
|
Evas_Safe_Call *call = event_info;
|
|
|
|
eina_lock_take(&_thread_mutex);
|
|
|
|
eina_lock_take(&call->m);
|
|
_thread_id = call->current_id;
|
|
eina_condition_broadcast(&call->c);
|
|
eina_lock_release(&call->m);
|
|
|
|
while (_thread_id_update != _thread_id)
|
|
eina_condition_wait(&_thread_cond);
|
|
eina_lock_release(&_thread_mutex);
|
|
|
|
eina_main_loop_define();
|
|
|
|
eina_lock_take(&_thread_feedback_mutex);
|
|
|
|
_thread_id = -1;
|
|
|
|
eina_condition_broadcast(&_thread_feedback_cond);
|
|
eina_lock_release(&_thread_feedback_mutex);
|
|
|
|
eina_condition_free(&call->c);
|
|
eina_lock_free(&call->m);
|
|
free(call);
|
|
}
|
|
|
|
EAPI int
|
|
evas_thread_main_loop_begin(void)
|
|
{
|
|
Evas_Safe_Call *order;
|
|
|
|
if (eina_main_loop_is())
|
|
{
|
|
return ++_thread_loop;
|
|
}
|
|
|
|
order = malloc(sizeof (Evas_Safe_Call));
|
|
if (!order) return -1;
|
|
|
|
eina_spinlock_take(&_thread_id_lock);
|
|
order->current_id = ++_thread_id_max;
|
|
if (order->current_id < 0)
|
|
{
|
|
_thread_id_max = 0;
|
|
order->current_id = ++_thread_id_max;
|
|
}
|
|
eina_spinlock_release(&_thread_id_lock);
|
|
|
|
eina_lock_new(&order->m);
|
|
eina_condition_new(&order->c, &order->m);
|
|
|
|
evas_async_events_put(NULL, 0, order, _evas_thread_main_loop_lock);
|
|
|
|
eina_lock_take(&order->m);
|
|
while (order->current_id != _thread_id)
|
|
eina_condition_wait(&order->c);
|
|
eina_lock_release(&order->m);
|
|
|
|
eina_main_loop_define();
|
|
|
|
_thread_loop = 1;
|
|
|
|
return _thread_loop;
|
|
}
|
|
|
|
EAPI int
|
|
evas_thread_main_loop_end(void)
|
|
{
|
|
int current_id;
|
|
|
|
if (_thread_loop == 0)
|
|
abort();
|
|
|
|
/* until we unlock the main loop, this thread has the main loop id */
|
|
if (!eina_main_loop_is())
|
|
{
|
|
ERR("Not in a locked thread !");
|
|
return -1;
|
|
}
|
|
|
|
_thread_loop--;
|
|
if (_thread_loop > 0)
|
|
return _thread_loop;
|
|
|
|
current_id = _thread_id;
|
|
|
|
eina_lock_take(&_thread_mutex);
|
|
_thread_id_update = _thread_id;
|
|
eina_condition_broadcast(&_thread_cond);
|
|
eina_lock_release(&_thread_mutex);
|
|
|
|
eina_lock_take(&_thread_feedback_mutex);
|
|
while (current_id == _thread_id && _thread_id != -1)
|
|
eina_condition_wait(&_thread_feedback_cond);
|
|
eina_lock_release(&_thread_feedback_mutex);
|
|
|
|
return 0;
|
|
}
|