Some joystick inputs are delayed on FreeBSD

[SDLBugzilla]

This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• A patch to read() multiple times (single.patch, text/plain, 2013-09-06 20:36:41 +0000, 3453 bytes)

Reported in version: HG 1.2
Reported for operating system, platform: FreeBSD, All

Comments on the original bug report:

On 2013-09-06 20:36:41 +0000, wrote:

Created attachment 1322
A patch to read() multiple times

Some joysticks with high sampling rate need to be read() more fast,
otherwise it delay user inputs due to internal queue.
Especially, an app that issues SDL_PollEvent() not so frequent, such as:

while ( ! done ) {
usleep(10*1000); // <-- some delay
while ( SDL_PollEvent(&event) ) {
:
}
}

It is solved by read()-ing multiple times at once.
(I think this is safe because of O_NONBLOCK mode)

On 2013-09-07 03:54:44 +0000, Sam Lantinga wrote:

Fixed, thanks!
http://hg.libsdl.org/SDL/rev/957d7137867c