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POSIX: added hrt_queue for handling fast periodic events

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The workqueues measure time in ticks  which is typically 10ms.
Some interrupt events in Nuttx occur at about 1ms so a more
granular workqueue is needed for POSIX.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>
This commit is contained in:
Mark Charlebois
2015-06-02 16:55:33 +00:00
parent 9882b78383
commit cced8ed69e
5 changed files with 453 additions and 8 deletions
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src/platforms/posix/drivers/accelsim/accelsim.cpp
+7 -7
View File
@@ -625,10 +625,10 @@ ACCELSIM::ioctl(device::file_t *filp, int cmd, unsigned long arg)
bool want_start = (_call_accel_interval == 0);
/* convert hz to hrt interval via microseconds */
unsigned ticks = 1000000 / arg;
unsigned period = 1000000 / arg;
/* check against maximum sane rate */
if (ticks < 500)
if (period < 500)
return -EINVAL;
/* adjust filters */
@@ -636,7 +636,7 @@ ACCELSIM::ioctl(device::file_t *filp, int cmd, unsigned long arg)
/* update interval for next measurement */
/* XXX this is a bit shady, but no other way to adjust... */
_accel_call.period = _call_accel_interval = ticks;
_accel_call.period = _call_accel_interval = period;
/* if we need to start the poll state machine, do it */
if (want_start)
@@ -749,15 +749,15 @@ ACCELSIM::mag_ioctl(device::file_t *filp, int cmd, unsigned long arg)
bool want_start = (_call_mag_interval == 0);
/* convert hz to hrt interval via microseconds */
unsigned ticks = 1000000 / arg;
unsigned period = 1000000 / arg;
/* check against maximum sane rate */
if (ticks < 1000)
/* check against maximum sane rate (1ms) */
if (period < 1000)
return -EINVAL;
/* update interval for next measurement */
/* XXX this is a bit shady, but no other way to adjust... */
_mag_call.period = _call_mag_interval = ticks;
_mag_call.period = _call_mag_interval = period;
/* if we need to start the poll state machine, do it */
if (want_start)