For level triggered interrupts currently the handler would have been
called two times (assuming no one cleared the mask in a handler which
would have been bad because the handler couldn't process all other that
got cleared by accident). This patch allows the handler only to return
if nothing is left to do.
This ensures that lines are output atomically if they are produced by
different other contexts, e.g. interrupts, other processors, other
threads.
Update #3199.
Retrieved from:
https://creativecommons.org/licenses/by-sa/4.0/legalcode.txt
This license is inteded for code which is shared with the documentation,
e.g code examples. Such code should be dual licensed BSD-2-Clause or
CC-BY-SA-4.0 with the following license identifier:
SPDX-License-Identifier: BSD-2-Clause OR CC-BY-SA-4.0
This patch adds the ability for termios to send SIGINTR on receipt
of VINTR and SIGQUIT for VKILL and return -1/EINTR from read() on
a termios channel. Importantly, this patch does not alter the default
behavior or force POSIX signal code in just because termios is used.
The application must explicitly enable the POSIX behavior of generating
a signal upon receipt of these characters. This is discussed in the
POSIX standard:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap11.html
Closes#3800.
This makes it possible to install higher quality timecounter in
plug-and-play systems and helps to override the clock driver provided
timecounter in some test scenarios.
Introduce new library librtemsrecordwrap.a which contains wrappers for
operating system functions which produce entry/exit events.
The wrappers can be selected during link time via the GNU ld --wrap
option.
Update #3665.
+ Modify POSIX thread create extension to ensure expected
initial signal mask is provided to system threads, initial
tasks and threads, and inheritied by tasks and threads.
+ Adds psxsignal07 to verify functionality when using a POSIX
Initialization thread and POSIX threads.
+ Adds psxsignal08 to verify functionality when using a Classic API
Initialization task and Classic API tasks.
Closes#3794.
The use case for this function is the libbsd. In FreeBSD, the interrupt
setup and binding to a processor is done in two steps. Message
based interrupts like PCIe MSI and MSI-X interrupts can be implemented
through interrupt server entries. They are setup at the default
interrupt server and may optionally move to an interrupt server bound to
a specific processor.
The _Record_Initialize() function depends only initialized read-only
data. Call it as the first initialization step to allow tracing of the
complete system initialization.
Update #3665.
Reduce the system dependencies to allow tracing of very low level
functions, for example the interrupt disable/enable.
Introduce general purpose RTEMS_RECORD_CALLER and RTEMS_RECORD_LINE
events.
Update #3665.
The .rtemsrwset section is used for the per-CPU data. This section has
loadable content. Place the ring buffers in the BSS section to avoid
large executable image sizes.
Not using the per-CPU data makes it possible to initialize the record
support earlier.
Update #3665.
