Beat Küng 40675bd1f4 logger: fix potential semaphore counter overflow ...

When the timer callback is called at a higher rate than the logger can
execute the main loop (which is never the case under normal conditions),
the semaphore counter will increase unbounded, and eventually lead to
an assertion failure in NuttX.
The maximum semaphore counter is 0x7FFF, and when the logger runs at
default rate (3.5ms), the logger task must be blocked for 0x7FFF*3.5/1000
= 114 seconds continuously for an overflow to happen.

I see 2 cases where that could happen:
- the logger execution blocks somehow, or busy-loops in an inner loop
- a higher-prio task runs busy and hogs the CPU over a long period of time

2018-02-27 21:01:29 +01:00

..

array.h

logger: add copyright to files

2016-05-14 11:27:07 +02:00

CMakeLists.txt

ignore -Wsign-compare per module

2017-09-07 10:27:36 +02:00

log_writer_file.cpp

log_writer_file: register hardfault handler before opening the log file

2017-08-16 16:46:56 +02:00

log_writer_file.h

hardfault_log: move hardfault_store_ulog_filename to logger module

2017-07-07 17:06:48 +02:00

log_writer_mavlink.cpp

mavlink ulog: advertise ulog_stream topic before subscribing to ulog_stream_ack

2017-08-16 16:46:56 +02:00

log_writer_mavlink.h

logger: add mavlink write backend

2016-10-19 13:13:47 +02:00

log_writer.cpp

astyle src/modules/logger

2017-01-29 01:18:32 +01:00

log_writer.h

logwriter: fix shadowing compiler warnings

2016-10-19 13:13:47 +02:00

logger.cpp

logger: fix potential semaphore counter overflow

2018-02-27 21:01:29 +01:00

logger.h

logger: Add logging profile to support comparison of multiple sensors (#8134)

2017-10-20 09:30:55 -04:00

messages.h

ULog: add INFO_MULTIPLE & FLAG_BITS messages

2017-07-07 17:06:48 +02:00

params.c

logger: Add logging profile to support comparison of multiple sensors (#8134)

2017-10-20 09:30:55 -04:00