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use no blocking read

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Vincent Wei
2020-11-10 17:53:00 +08:00
parent 8694a342b9
commit cdc818d936
1 changed files with 6 additions and 3 deletions
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src/ial/singletouchkey.c
+6 -3
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@@ -70,9 +70,12 @@ static short MOUSEX = 0, MOUSEY = 0, MOUSEBUTTON = 0;
static int get_touch_data (short *x, short *y, short *button)
{
static struct input_event data;
struct input_event data;
while (1) {
if (read (sg_tp_event_fd, &data, sizeof (data)) < sizeof (data))
return -1;
while (read (sg_tp_event_fd, &data, sizeof (data)) == sizeof (data)) {
if (data.type == EV_SYN && data.code == SYN_REPORT) {
break;
}
@@ -198,7 +201,7 @@ BOOL ial_InitSingleTouchKey (INPUT* input, const char* mdev, const char* mtype)
return FALSE;
}
sg_tp_event_fd = open (touch_dev, O_RDWR /*| O_NONBLOCK */);
sg_tp_event_fd = open (touch_dev, O_RDWR | O_NONBLOCK);
if (sg_tp_event_fd < 0) {
_WRN_PRINTF ("failed when opening touch event device: %s\n", touch_dev);
return FALSE;