Commit Graph

200 Commits

Author SHA1 Message Date
Xiang Xiao
4d634b9006 sched: Consolidate the cancellation notification logic
to avoid the code duplication

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ie2ba55c382eb3eb7c8d9f04bba1b9e294aaf6196
2020-06-15 21:21:14 +01:00
Xiang Xiao
5785340e04 sched/group: Change group_kill_children's argument from task_tcb_s to tcb_s
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I8fee46e75bd192bbaa6b03db8fc4d5dd60c58b10
2020-06-15 07:09:51 -06:00
Gregory Nutt
d823a3ab3e sched/: Make more naming consistent
Rename various functions per the quidelines of https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions
2020-05-16 13:39:03 -03:00
Xiang Xiao
517974787f Rename clock_systime[r|spec] to clock_systime_[ticks|timespec]
follow up the new naming convention:
https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions
2020-05-10 14:35:50 -06:00
Gregory Nutt
f92dba212d sched/sched/sched.h: Make naming of all internal names consistent:
1. Add internal scheduler functions should begin with nxsched_, not sched_
2. Follow the consistent naming patter of https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions
2020-05-09 16:58:42 -03:00
Gregory Nutt
a4218e2144 include/nuttx/sched.h: Make naming of all internal names consistent:
1. Add internal scheduler functions should begin with nxsched_, not sched_
2. Follow the consistent naming patter of https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions
2020-05-09 14:19:08 -03:00
Gregory Nutt
3dca5eba15 Completes the Implementation of the TLS-based errno
- Remove per-thread errno from the TCB structure (pterrno)
- Remove get_errno() and set_errno() as functions.  The macros are still available as stubs and will be needed in the future if we need to access the errno from a different address environment (KERNEL mode).
- Add errno value to the tls_info_s structure definitions
- Move sched/errno to libs/libc/errno.  Replace old TCB access to the errno with TLS access to the errno.
2020-05-07 23:11:34 +01:00
Xiang Xiao
eca7059785 Refine __KERNEL__ and CONFIG_BUILD_xxx usage in the code base
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-01 10:43:47 -03:00
Ouss4
d0bb7c137a Use NuttX's signal set functions inside the OS. 2020-04-29 16:40:27 -06:00
Gregory Nutt
67ec3d7926 Remove CONFIG_CAN_PASS_STRUCT
This commit resolves issue #620:

Remove CONFIG_CAN_PASS_STRUCTS #620

The configuration option CONFIG_CAN_PASS_STRUCTS was added many years ago to support an old version of the SDCC compiler. That compiler is currently used only with the Z80 and Z180 targets. The limitation of that old compiler was that it could not pass structures or unions as either inputs or outputs. For example:

    #ifdef CONFIG_CAN_PASS_STRUCTS
    struct mallinfo mallinfo(void);
    #else
    int      mallinfo(FAR struct mallinfo *info);
    #endif

And even leads to violation of a few POSIX interfaces like:

    #ifdef CONFIG_CAN_PASS_STRUCTS
    int  sigqueue(int pid, int signo, union sigval value);
    #else
    int  sigqueue(int pid, int signo, FAR void *sival_ptr);
    #endif

This breaks the 1st INVIOLABLES rule:

Strict POSIX compliance
-----------------------

  o Strict conformance to the portable standard OS interface as defined at
    OpenGroup.org.
  o A deeply embedded system requires some special support.  Special
    support must be minimized.
  o The portable interface must never be compromised only for the sake of
    expediency.
  o Expediency or even improved performance are not justifications for
   violation of the strict POSIX interface

Also, it appears that the current SDCC compilers have resolve this issue and so, perhaps, this is no longer a problem: z88dk/z88dk#1132

NOTE:  This commit cannot pass the PR checks because it depends on matching changes to the apps/ directory.
2020-04-11 21:19:47 +01:00
ligd
231ad202ee global change: repace sched_xfree() to kxmm_free()
Changes:
sched_xfree() => kxmm_free()
remove garbage related APIs
remove ARCH_HAVE_GARBAGE

Cause garbage feature move to mm_heap, then don't need
garbage anymore.

Change-Id: If310790a3208155ca8ab319e8d038cb6ff92c518
Signed-off-by: ligd <liguiding@fishsemi.com>
2020-04-09 10:29:28 -06:00
Nakamura, Yuuichi
3cc336dddd Remove type casting to wdentry_t (sched/) 2020-04-07 06:23:15 -06:00
Nathan Hartman
a5e643b0cd Fix typos in comments and documentation. 2020-03-16 20:01:11 -06:00
YAMAMOTO Takashi
a0bfc24b4c sched/signal: Wrap long lines to make nxstyle happy 2020-03-10 11:13:42 +01:00
YAMAMOTO Takashi
674417bb33 Don't actually send a signal with signo 0
As stated by standards.
2020-03-09 07:56:11 -06:00
Xiang Xiao
cde88cabcc Run codespell -w with the latest dictonary again
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-02-23 22:27:46 +01:00
Xiang Xiao
bd4e8e19d3 Run codespell -w against all files
and fix the wrong correction
2020-02-22 14:45:07 -06:00
Xiang Xiao
5c80b94820 Replace #include <semaphore.h> to #include <nuttx/semaphore.h>
Since the kernel side should call nxsem_xxx instead and remove the unused inclusion
2020-02-01 08:27:30 -06:00
Xiang Xiao
68951e8d72 Remove exra whitespace from files (#189)
* Remove multiple newlines at the end of files
* Remove the whitespace from the end of lines
2020-01-31 09:24:49 -06:00
raiden00pl
02f619a8be sched/signal/sig_default.c: fix compilation error when CONFIG_SIG_SIGPIPE_ACTION undefined 2020-01-15 08:04:37 -06:00
Gregory Nutt
cf5d17f795 tools/nxstyle: Added logic to parse section headers (#90)
* tools/nxstyle:  Added logic to parse section headers (like Included files, Pre-processor Definitions, etc.) and to assure that the section headers are correct for the file type.  Also (1) verify that #include appears only in the 'Included Files' section and that (2) #define only occurs in the Pre-processor definition section.

    Right now, there are several places where that rule is not followed.  I think most of these are acceptable so these failures only generate warnings, not errors.  The warning means that we need to go look at the offending #define or #include and decide if it is a acceptable usage or not.
2020-01-13 18:08:45 +00:00
Xiang Xiao
6a3c2aded6 Fix wait loop and void cast (#24)
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
2020-01-02 10:54:43 -06:00
Guillherme Amaral
d022b56b84 arch/arm/src/stm32f0l0g0/Kconfig: Select STM32F0L0G0_PWM when TIM{14-17}_PWM enabled. 2019-11-30 15:34:00 -06:00
Gregory Nutt
80a56e9f3d sched/signal/sig_dispatch.c: Extend some comments. 2019-11-30 14:08:47 -06:00
Gregory Nutt
4e277a7f62 sched/signal/sig_dispatch.c: Trivial update to a comment. 2019-11-29 10:01:42 -06:00
Gregory Nutt
81790f2ca8 sched/signal/sig_dispatch.c: Clarify some logic. It is not necessary to test the TCB's TCB_FLAG_SYSCALL if syscalls are not enabled. 2019-11-29 08:11:55 -06:00
Gregory Nutt
c4d10de565 Fix a warning found in build testing. 2019-11-28 14:53:17 -06:00
Gregory Nutt
69318b1024 Re-implements reverted commit 344f7bc9f6 in a way that should not have the undesired side-effect. include/nuttx/sched.h: Add a bit to the TCB flags to indicat the thread is a user thread in a syscall. sched/nuttx/nxsig_dispatch.c: Delay dispatching to signal handlers if within a system call. In all syscall implementations: Process delayed signal handling when exiting system call. 2019-11-28 12:47:36 -06:00
Gregory Nutt
b5111d2c38 tools/nxstyle.c: Add logic to detect if there is a blank line following the final right brace. sched/: Applied the modified nxstyle to all C file as a test. 2019-10-24 11:02:42 -06:00
liuhaitao
b2f8a79c3b sched/signal: Add support for SIGPIPE. SIGPIPE uses SIG_SIGPIPE_ACTION which terminates process by default. It also could be ignored. 2019-10-17 11:29:39 -06:00
raiden00pl
7715ee71d2 Merged in raiden00/nuttx_sim (pull request #1044)
sched/signal/sig_default.c: fix undefined reference to sched_suspend if CONFIG_SIG_SIGSTOP_ACTIO not defined and eliminate compilation warnings

Approved-by: Gregory Nutt <gnutt@nuttx.org>
2019-10-04 11:51:14 +00:00
Gregory Nutt
5141d9f53c sched/signal/sig_initialize.c: Add some checks for allocation failures. 2019-09-23 07:49:21 -06:00
Juha Niskanen
ebc6f51641 Fix some typos 2019-09-17 10:46:23 -06:00
igd
32bac84548 sched/Kconfig, sched/signal/sig_notification.c: Add configuration option to decide select either the high-priority or low-priority work queue for SIG_EVTHREAD notifications. 2019-08-26 10:54:49 -06:00
Gregory Nutt
bff30ff9bc Fix minor typo / copy-paste. 'cancellaction point'->'cancellation point' 2019-08-23 11:57:35 -06:00
Gregory Nutt
bde0509cae tools/nxstyle.c: Fix error in conditional logic that was preventing detection bad brace alignment. Add logic to handle alignment of braces in data initializators which following slightly different indentation rules. 2019-06-30 10:35:10 -06:00
Gregory Nutt
7ab149d8e9 Various fixes to get a clean compile with the SDCC compiler. Compile is 'almost' clean. 2019-06-03 16:53:11 -06:00
Gregory Nutt
7a0481d2a9 drivers/net/telnet.c: Fix a C89 non-compliance that was breaking the ez80 build. 2019-06-03 08:20:21 -06:00
Gregory Nutt
e4069ebe5e include/nuttx/signal.h: Fix a C89 compliance problem that cause the ez80 build to fail. Empty structure and unions are not accepted by the compiler. 2019-06-03 08:12:20 -06:00
Gregory Nutt
b49be4bb20 Squashed commit of the following:
arch/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    sched/ audio/ crypto/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    Documentation/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    fs/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    graphics/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    net/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    drivers/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    include/, syscall/, wireless/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    configs/:  Remove all references to CONFIG_DISABLE_POLL.  Standard POSIX poll can no longer be disabled.
2019-05-21 18:57:54 -06:00
Gregory Nutt
c2136fda6d sched/signal/sig_default.c: The abnormal termination handler was just calling exit() conditionally when, for example, Ctrl-C is sent to a task. The abnormal termination handler must obey the rules of cancellation points: If cancelation is disabled, then the abnormal termintion logic must wait for cancelation to be re-enabled; If cancellation is deffered then the abnormal termination logic may have to wait for the victim task to enter or exit a cancellation point. 2019-05-17 07:39:04 -06:00
Gregory Nutt
abf6965c24 Squashed commit of the following:
libs/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    syscall/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    wireless/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    Documentation/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    include/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    drivers/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    sched/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    configs:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/xtensa:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/z80:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/x86:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/renesas and arch/risc-v:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/or1k:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/misoc:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/mips:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/avr:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/arm:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
2019-04-29 14:52:05 -06:00
Matous Pokorny
1e54a14c9f Fix some typos in comments. 2019-04-15 07:56:53 -06:00
Gregory Nutt
f914ec6e2b tools/nxstyle.c: Fix logic that detects if an operator is correctly delimited with spaces. sched/: Various changes because sched/ C files were used as Guinea Pigs to test nstyle.c. 2019-03-01 10:50:02 -06:00
Gregory Nutt
3c0f6f4876 arch/xtensa/src/esp32/esp32_serial.c: Fix some backward arguments. Correct 2-stop bit setting.
sched/sched/sched_waitid.c:  Could exit without leaving critical section on some error conditions.
sched/signal/sig_deliver.c: Update some comments.
2019-02-28 11:32:31 -06:00
Gregory Nutt
bb623d1e04 This commit renames all internal OS functions defined under sched/task so that they begin with the prefix. For example, nxtask_exit() vs. task_exit().
Squashed commit of the following:

    Trivial, cosmetic
    sched/, arch/, and include:  Rename task_vforkstart() as nxtask_vforkstart()
    sched/, arch/, and include:  Rename task_vforkabort() as nxtask_vforkabort()
    sched/, arch/, and include:  Rename task_vforksetup() as nxtask_vfork_setup()
    sched/:  Rename notify_cancellation() as nxnotify_cancellation()
    sched/:  Rename task_recover() to nxtask_recover()
    sched/task, sched/pthread/, Documentation/:  Rename task_argsetup() and task_terminate() to nxtask_argsetup() and nxtask_terminate(), respectively.
    sched/task:  Rename task_schedsetup() to nxtask_schedsetup()
    sched/ (plus some binfmt/, include/, and arch/):  Rename task_start() and task_starthook() to nxtask_start() and nxtask_starthook().
    arch/ and sched/:  Rename task_exit() and task_exithook() to nxtask_exit() and nxtask_exithook(), respectively.
    sched/task:  Rename all internal, static, functions to begin with the nx prefix.
2019-02-04 13:42:51 -06:00
Gregory Nutt
90e4cf4349 mm/umm_heap: sbrk() is only available in the KERNEL build. 2019-02-04 10:32:31 -06:00
Gregory Nutt
641a98a434 arch/: The saved return register state is available on the user stack. Thic commit reorders some logic so that certain, critical registers are preserved in the TCB. This does not make the logic 100% secure, but does prevent some obvious things. sched/signal/sig_delivery: Add a flag to the TCB to indicate that we are in a signal handler. Use this flag to assure that a there a never attempts to nest signal handling operations on a thread. This was guaranteed before but when locking of pre-emption during signal delivering was eliminated in a previous commit, there was a remote possibility of an attempt to do nested signal handling. This flag assures that there is only one signal handled at a time. 2019-02-03 15:29:47 -06:00
Gregory Nutt
1b1be1f327 sched/signal/sig_deliver.c: Restructure nxsig_deliver() so that the signal handler is not called with the pre-emption disabled (or, at least no with pre-emption disabled by nxsig_deliver() itself). 2019-02-03 10:39:41 -06:00
Gregory Nutt
78c8485b0d Fix some warnings found in build testing. 2019-01-27 17:23:01 -06:00
Xiang Xiao
fb63c0a293 sched/signal and related changes to other OS subsystems. 2019-01-27 09:28:59 -06:00
Gregory Nutt
3b22d13493 sched/: Add debug assertions before each call to up_block_task() to assure that there is no attempt to block an IDLE task. 2018-11-30 06:54:15 -06:00
Gregory Nutt
807d5bb4ae Critical Section Monitor: Add low level timer support for simulation. Fix serial bugs and logic errors in initial implementation. Still does not work; takes assertions. 2018-11-24 15:07:12 -06:00
Gregory Nutt
d2a11cdea5 sched/signal/sig_timedwait.c: Remove unnecessary disble of pre-emption. 2018-11-23 06:59:48 -06:00
Xiang Xiao
d32d9d4b24 fs/partition: Try MTDIOC_GEOMETRY IOCTL before bops's geometry
fs/driver/fs_blockpartition.c:  Support MTD IOCTL
2018-11-08 09:41:54 -06:00
Xiang Xiao
a9ff43d93c fs/aio, libs/libc/aio, sched/mqueue, sched/timer, and sched/signal: Remove the code duplication for SIGEV_THREAD. 2018-11-08 08:19:17 -06:00
dongjianli
057d555129 sched/signal and syscall/: Add support for pselect() and ppoll() functions 2018-11-08 07:45:23 -06:00
Xiang Xiao
27c7974cb1 sched/signal/sig_suspend.c: sigsuspend() shouldn't eat the pending signal but dispatch all instead 2018-11-08 07:39:37 -06:00
Gregory Nutt
7769bd490c sched/signal/sig_nanosleep.c: Fix an error introduced with recent commit. Noted by Jussi Kivilinna. 2018-09-17 06:21:25 -06:00
Gregory Nutt
abc0e58799 sched/task/task_restart.c: Fix a compile error if CONFIG_DISABLE_SIGNALS defined. 2018-09-15 14:51:04 -06:00
Gregory Nutt
dc48263a6a libs/libc/wqueue/work_usrthread.c: Revise commit 49e725625a. Use sigprocmask() so tht we do not lose a signal, not sched_lock() which will not do the job in SMP mode. 2018-09-14 09:02:03 -06:00
Gregory Nutt
9d3148406c Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue.
Squashed commit of the following:

    Fix up some final compile isses.

    net/netdev:  Convert the network down notification logic to use the new wqueue-based notification factility.

    net/udp:  Convert the UDP readahead notification logic to use the new wqueue-based notification factility.

    net/tcp:  Convert the TCP readahead notification logic to use the new wqueue-based notification factility.

    mm/iob:  Convert the IOB notification logic to use the new wqueue-based notification factility.

    sched/wqueue:  Signals are not good IPCs to support the target poll functionality for several reasons including the amount of data that can be passed with a signal and in the fact that in protected and kernel modes, user threads executing signal handlers in protected, kernel memory is problematic.  Instead, convert the same logic to perform the notifications via function callback on the high priority work queue.
2018-09-09 15:01:44 -06:00
Gregory Nutt
20814acad2 sched/signal: In signal notification facility, use sigqueue() to notify vs. kill(). With sigqueue, we can pass more info (but still not enough). 2018-09-09 11:57:25 -06:00
Gregory Nutt
fc127fd297 sched/signal: Add a generic signal notification facility. Modify the custom IOB available notifier so that it is now just a wrapper around this generic signal notification. This generic signal notification faility will, eventually, be used to support network polling.
Squashed commit of the following:

    mm/iob:  The IOB available notifier is now just a wrapper around the common signal notifier.

    sched/signal:  Add a generic signal notification facility.

    sched/signal/sig_evthread.c:  More trivial naming changes.

    sched/signal:  Rename nxsig_notification() to nxsig_evthread() to make forthcoming naming additions more consistent.
2018-09-09 08:32:37 -06:00
Gregory Nutt
993321dda6 drivers/serial: Add support for Ctrl-Z. This works just like the recently added Ctrl-C support except that SIGSTP is sent when the Ctrl-Z characters is encountered vs. SIGINT. 2018-09-02 15:36:25 -06:00
Gregory Nutt
093348030e sched/: Update signal default STOP action. If waitpid was called with the WUNTRACED then wake up waitpid. Also fix some compile problems.. How did this work before? 2018-09-02 13:51:52 -06:00
Gregory Nutt
a7265d71c6 This commit adds support for default signal actions for SIGSTOP, SIGSTP, and SIGCONT.
Squashed commit of the following:

    Add procfs support to show stopped tasks.  Add nxsig_action() to solve a chicken and egg problem:  We needed to use sigaction to set default actions, but sigaction() would refuse to set actions if the default actions could not be caught or ignored.

    sched/signal:  Add configuration option to selectively enabled/disable default signal actions for SIGSTOP/SIGSTP/SIGCONT and SIGKILL/SIGINT.  Fix some compilation issues.

    sched/sched:  Okay.. I figured out a way to handle state changes that may occur while they were stopped. If a task/thread was already blocked when SIGSTOP/SIGSTP was received, it will restart in the running state.  I will appear that to the task/thread that the blocked condition was interrupt by a signal and returns the EINTR error.

    sched/group and sched/sched:  Finish framework for continue/resume logic.

    sched/signal:  Roughing out basic structure to support task suspend/resume
2018-08-30 10:27:18 -06:00
Gregory Nutt
aaa660bae6 sched/group and sched/signal: Some good but trivial stuff harvested from the suspend branch. 2018-08-29 15:50:01 -06:00
Gregory Nutt
1d04ef2f93 sched/signal/sig_default.c: Lock the scheduler while while killing the children so that we do not lose priority and let the task group continue to run in an indeterminate state. 2018-08-29 14:55:45 -06:00
Gregory Nutt
94910d2925 sched/: Cosmetic reordering of conditional compilation. Style is that comments related to the conditionally compiled logic are included within the conditional compipilation so that its scope and belongingness is clear. 2018-08-29 13:09:00 -06:00
Gregory Nutt
d24f58c790 sched/group/group_killchildren.c: In some circumstances, group_killchildren() could have called pthread_cancel() to kill a task. Also, the behavior would not be as expected if a pthread had cancellation disabled. sched/signal/sig_default.c: Correct signal handling in the multiple threaded case. The SIGKILL signal may actually be processed on a pthread, not the main thread of the task. 2018-08-29 07:33:28 -06:00
Xiang Xiao
19bde835e2 sched/signal/sig_default.c: Fix warnings about implicit declaration of 'this_task' and 'group_killchildren' 2018-08-29 06:10:52 -06:00
Gregory Nutt
dcb3d4b050 sched/signal: Add logic and an interface to determin if a signal can be caught or ignored. sigaction now correctly returns EINVAL on any attempt to catch or ignore such signals (only SIGKILL for now and only if CONFIG_SIG_DEFAULT=y). 2018-08-28 12:39:03 -06:00
Gregory Nutt
0756cf66ed sched/signal: Add support for SIGINT in addition to SIGKILL. drivers/serial: Use SIGINT instead of SIGKILL when control-C is pressed. 2018-08-28 12:15:31 -06:00
Gregory Nutt
5a51702ef2 sched/signal/sig_default.c: Correct an error in signal number usage. Add critical sections (not sure if that is necessary). Update some comments. 2018-08-27 22:32:57 -06:00
Gregory Nutt
499b89feed sched/signal: Default Signal Actions. Change some types to superficially simplify. Add configuration options to enabled default signal behaviors on a per-signal basis. I don't think users are prepared for SIGALRM to terminate the task (which is the correct default behavior if you don't change it). Extend the implementation of default signals so that it is totally table driven and extensible by simply mondifying the content of const tables. 2018-08-27 15:37:43 -06:00
Gregory Nutt
6d094e4b33 sched/signals: Update the signal default action logic to support sigaction(). signaction() must be able to handle and input action of SIG_DFL to setup the default signal action; it mast also return SIG_DFL it is replacing the default action. 2018-08-27 13:13:23 -06:00
Gregory Nutt
c0d234a474 Squashed commit of the following:
drivers/serial/Kconfig:  It is no longer necessary to restrict Ctrl-C handling to the FLAT build

    sched/signal:  Add a new configuration option to select signal default actions, separate handling of signal default actions from both task startup logic and from the serial TTY Ctrl-C logic.  Add a signal set in the group structure to keep track of what signals have been set to the default action.  In dispatching signals in PROTECTED or KERNEL mode, use this signal set to determine if the default signal handler is attached and dispatch the signal in kernel mode for the default actions.
2018-08-27 11:40:09 -06:00
Xiang Xiao
e1202d2ed3 Replace all ASSERT with DEBUGASSERT to save the code space 2018-08-24 06:58:30 -06:00
Alan Carvalho de Assis
283b73edc5 Fix lots of typos in C comments and Kconfig help text 2018-07-08 18:24:45 -06:00
Gregory Nutt
8fdbb1e0a4 Elimate use of the non-standard type systime_t and replace it the equivalent, standard type clock_t
Squashed commit of the following:

    sched:  Rename all use of system_t to clock_t.
    syscall:  Rename all use of system_t to clock_t.
    net:  Rename all use of system_t to clock_t.
    libs:  Rename all use of system_t to clock_t.
    fs:  Rename all use of system_t to clock_t.
    drivers:  Rename all use of system_t to clock_t.
    arch:  Rename all use of system_t to clock_t.
    include:  Remove definition of systime_t; rename all use of system_t to clock_t.
2018-06-16 12:16:13 -06:00
Gregory Nutt
b54ffe858a Standardization of some function headers. 2018-03-13 09:52:27 -06:00
Gregory Nutt
02df81bc5f Squashed commit of the following:
drivers/lcd:  Add an IOcTL to FT80x driver to write to FIFO CMD RAM.
2018-02-20 15:24:52 -06:00
Gregory Nutt
3ddea73dc1 arch/arm/src/armv7-a: Port the SMP change by Masayuki Ishikawa to the ARMv7-A family. 2018-02-14 08:36:34 -06:00
Gregory Nutt
d7fae340c1 Trivial changes from review of last PR. 2018-02-14 08:20:40 -06:00
Masayuki Ishikawa
b9707776d6 Merged in masayuki2009/nuttx.nuttx/fix_signal_handing_for_smp (pull request #599)
Fix signal handing for smp

* sched/signal: Remove SMP related logic in sig_dispatch.c

    This change prevents from a deadlock in up_schedulesigaction.c
    where inter-CPU signal handling is actually implemented.

    Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/armv7-m: Fix signal handling for SMP

    In previous implementation, signal handling for SMP was incorrect.
    Thus, for example, if an inter-CPU signal happened an incorret tcb
    was signaled and caused ASSERT().

    This change fixes the issues and works for both inter-CPU signal
    handling and signal handling on the same CPU.

    Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>
2018-02-14 14:10:32 +00:00
Gregory Nutt
7cf88d7dbd Make sure that labeling is used consistently in all function headers. 2018-02-01 10:00:02 -06:00
Gregory Nutt
da50646bcf sched/wdog: wd_start() is an internal OS function and should not set the errno value. Reviewed and updated every call to wd_start() to verify if return value is used and if so if the errno value is accessed. 2018-01-31 10:09:14 -06:00
Gregory Nutt
b9fa3e167e Changes from review of clock_nanosleep(): Misplaced right bracket, but return value in one failure case. 2017-11-11 18:01:28 -06:00
Gregory Nutt
35ee844590 sched/signal/sig_nanosleep.c and libc/time/lib_nanosleep.c: Implement clock_nanosleep(). nanosleep() is now reduced to a libc wrapper around clock_nanosleep(). 2017-11-11 17:44:59 -06:00
Gregory Nutt
3c3c712887 nxsig_timedwait: Add logic to suppress the wait if there is a pending cancellation. 2017-10-12 09:53:17 -06:00
Gregory Nutt
fd58bfd9c0 sched/signal: Add logic to wake up a thread that is waiting on a signal if it is canceled. 2017-10-12 08:55:19 -06:00
Gregory Nutt
e7c52bac60 Squashed commit of the following:
sched/mqueue:  Rename all private static functions for use the nxmq_ vs. mq_ naming.

    sched/mqueue:  Rename all OS internal functions declared in sched/mqueue/mqueue.h to begin with nxmq_ vs. mq_.  The mq_ prefix is reserved for standard application interfaces.
2017-10-09 09:06:46 -06:00
Gregory Nutt
d633c9bf8c Squashed commit of the following:
Replace all calls to sigprocmask() in the OS proper with calls to nxsig_procmask().

    sched/signal:  Add internal OS interface nxsig_procmask().  This internal interface is equivalent to the standard sigprocmask() used by applications except that it does not modify the errno value.  Also fixes a problem in that the original sigprocmask() was not setting the errno.
2017-10-07 12:16:10 -06:00
Gregory Nutt
4810499d3a Squashed commit of the following:
Replace all calls to sigqueue() in the OS proper with calls to nxsig_queue() to avoid accessing the errno variable.

    sched/signal:  Add nxsig_queue() which is functionally equivalent to sigqueue() except that it does not modify the errno variable.
2017-10-07 10:57:09 -06:00
Gregory Nutt
9e25d89223 Squashed commit of the following:
Replace all usage kill() in the OS proper with nxsig_kill().

    sched/signal:  Add nxsig_kill() which is functionally equivalent to kill() except that it does not modify the errno variable.
2017-10-07 08:22:18 -06:00
Gregory Nutt
936df1bcb5 Adds new OS internal functions nxsig_sleep() and nxsig_usleep. These differ from the standard sleep() and usleep() in that (1) they don't cause cancellation points, and (2) don't set the errno variable (if applicable). All calls to sleep() and usleep() changed to calls to nxsig_sleep() and nxsig_usleep().
Squashed commit of the following:

    Change all calls to usleep() in the OS proper to calls to nxsig_usleep()

    sched/signal:  Add a new OS internal function nxsig_usleep() that is functionally equivalent to usleep() but does not cause a cancellaption point and does not modify the errno variable.

    sched/signal:  Add a new OS internal function nxsig_sleep() that is functionally equivalent to sleep() but does not cause a cancellaption point.
2017-10-06 10:15:01 -06:00
Gregory Nutt
fdd0dcc0b6 This commit adds internal versions of the signal interfaces:
sigtimedwait() -> nxsig_timedwait()
  sigwaitinfo()  -> nxsig_waitinfo()
  nanosleep()    -> nxsig_nanosleep()

The internal OS versions differ from the standard application interfaces in that:

  - They do not create cancellation points, and
  - they do not modify the application's errno variable

Squashed commit of the following:

    sched/signal:  Replace all usage of sigwaitinfo(), sigtimedwait(), and nanosleep() with the OS internal counterparts nxsig_waitinfo(), nxsig_timedwait(), and nxsig_nanosleep().

    sched/signal:  Add nxsig_nanosleep().  This is an internal OS version of nanosleep().  It differs in that it does not set the errno varaiable and does not create a cancellation point.

    sched/signal:  Add nxsig_timedwait() and nxsig_waitinfo().  These are internal OS versions of sigtimedwait() and sigwaitinfo().  They differ in that they do not set the errno varaiable and they do not create cancellation points.
2017-10-06 08:28:20 -06:00
Gregory Nutt
8198ba6a6d This change renames all internal, private NuttX signal-related functions to use the prefix nxsig_ so that they cannot be confused with application interfaces that begin, primarily, with sig_
This is analogous to similar renaming that was done previously for semaphores.

Squashed commit of the following:

    sched/signal:  Fix a few compile warnings introduced by naming changes.

    sched/signal:  Rename all private, internal signl functions to use the nxsig_ prefix.

    sched/signal:  Rename sig_removependingsignal, sig_unmaskpendingsignal, and sig_mqnotempty to nxsig_remove_pendingsignal, nxsig_unmask_pendingsignal, and nxsig_mqnotempty to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_findaction and sig_lowest to nxsig_find_action and nxsig_lowest to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_allocatepingsigaction and sig_deliver to nxsig_alloc_pendingsigaction and nxsig_deliver to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_cleanup, sig_release, sig_releasependingaction, and sig_releasependingsignal to nxsig_cleanup, nxsig_release, nxsig_release_pendingaction, and nxsig_release_pendingsignal to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_tcbdispatch and sig_dispatch to nxsig_tcbdispatch and nxsig_dispatch to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_releaseaction and sig_pendingset to nxsig_release_action and nxsig_pendingset to make it clear that these are OS internal interfaces.

    sched/signal:  Rename sig_initialize and sig_allocateactionblock to nxsig_initialize and nxsig_alloc_actionblock to make it clear that these are OS internal interfaces.
2017-10-05 13:25:25 -06:00
Gregory Nutt
83cdb0c552 Squashed commit of the following:
libc/semaphore:  Add nxsem_getvalue() which is identical to sem_getvalue() except that it never modifies the errno variable.  Changed all references to sem_getvalue in the OS to nxsem_getvalue().

    sched/semaphore:  Rename all internal private functions from sem_xyz to nxsem_xyz.  The sem_ prefix is (will be) reserved only for the application semaphore interfaces.

    libc/semaphore:  Add nxsem_init() which is identical to sem_init() except that it never modifies the errno variable.  Changed all references to sem_init in the OS to nxsem_init().

    sched/semaphore:  Rename sem_tickwait() to nxsem_tickwait() so that it is clear this is an internal OS function.

    sched/semaphoate:  Rename sem_reset() to nxsem_reset() so that it is clear this is an internal OS function.
2017-10-03 12:52:31 -06:00