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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef BUILD_ASYNC_EVENTS
# ifndef _MSC_VER
# include <unistd.h>
# endif
# include <fcntl.h>
# include <errno.h>
#endif
#include "evas_common.h"
#include "evas_private.h"
#ifdef BUILD_ASYNC_EVENTS
static int _fd_write = -1;
static int _fd_read = -1;
static int _init_evas_event = 0;
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;
};
int
evas_async_events_init(void)
{
int filedes[2];
_init_evas_event++;
if (_init_evas_event > 1) return _init_evas_event;
if (pipe(filedes) == -1)
{
_init_evas_event = 0;
return 0;
}
_fd_read = filedes[0];
_fd_write = filedes[1];
fcntl(_fd_read, F_SETFL, O_NONBLOCK);
return _init_evas_event;
}
int
evas_async_events_shutdown(void)
{
_init_evas_event--;
if (_init_evas_event > 0) return _init_evas_event;
close(_fd_read);
close(_fd_write);
_fd_read = -1;
_fd_write = -1;
return _init_evas_event;
}
#endif
EAPI int
evas_async_events_fd_get(void)
{
#ifdef BUILD_ASYNC_EVENTS
return _fd_read;
#else
return -1;
#endif
}
EAPI int
evas_async_events_process(void)
{
#ifdef BUILD_ASYNC_EVENTS
Evas_Event_Async *ev;
int check;
int count = 0;
if (_fd_read == -1) return 0;
do
{
check = read(_fd_read, &ev, sizeof (Evas_Event_Async *));
if (check == sizeof (Evas_Event_Async *))
{
if (ev->func) ev->func((void *)ev->target, ev->type, ev->event_info);
free(ev);
count++;
}
}
while (check > 0);
evas_cache_image_wakeup();
if (check < 0)
{
switch (errno)
{
case EBADF:
case EINVAL:
case EIO:
case EISDIR:
_fd_read = -1;
}
}
return count;
#else
return 0;
#endif
}
EAPI Eina_Bool
evas_async_events_put(const void *target, Evas_Callback_Type type, void *event_info, Evas_Async_Events_Put_Cb func)
{
#ifdef BUILD_ASYNC_EVENTS
Evas_Event_Async *ev;
ssize_t check;
Eina_Bool result = EINA_FALSE;
if (!func) return 0;
if (_fd_write == -1) return 0;
ev = calloc(1, sizeof (Evas_Event_Async));
if (!ev) return 0;
ev->func = func;
ev->target = target;
ev->type = type;
ev->event_info = event_info;
do
{
check = write(_fd_write, &ev, sizeof (Evas_Event_Async*));
}
while ((check != sizeof (Evas_Event_Async*)) &&
((errno == EINTR) || (errno == EAGAIN)));
evas_cache_image_wakeup();
if (check == sizeof (Evas_Event_Async*))
result = EINA_TRUE;
else
{
switch (errno)
{
case EBADF:
case EINVAL:
case EIO:
case EPIPE:
_fd_write = -1;
}
}
return result;
#else
func((void*) target, type, event_info);
return EINA_TRUE;
#endif
}
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