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40 Commits

Author SHA1 Message Date
makejian
ee78219f9c semaphore: export priority ceiling interfaces in semaphore 
Signed-off-by: makejian <makejian@xiaomi.com>
 2024-09-10 01:26:31 +08:00
zhangyuan21
514e77b75e semaphore: Optimize priority inheritance with only one holder 
This PR is a modification that optimizes priority inheritance
for only one holder. After the above modifications are completed,
the mutex lock->unlock process that supports priority inheritance
can be optimized by 200 cycles.

Before modify: 2000 cycle
After modify: 1742 cycle

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
 2023-06-17 08:26:46 +03:00
Xiang Xiao
7990f90915 Indent the define statement by two spaces 
follow the code style convention

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-05-21 09:52:08 -03:00
lilei19
1d8af7e105 add holder for mutex 
Signed-off-by: lilei19 <lilei19@xiaomi.com>
 2023-01-31 12:08:05 +09:00
Masayuki Ishikawa
dc454765fb Revert "add holder for mutex" 
This reverts commit fc176addeb.
 2023-01-19 06:04:48 +09:00
lilei19
fc176addeb add holder for mutex 
Signed-off-by: lilei19 <lilei19@xiaomi.com>
 2023-01-18 17:40:58 +08:00
Xiang Xiao
ef65d443ad sem: Remove PRIOINHERIT_FLAGS_ENABLE and use SEM_PRIO_INHERIT instead 
and refine the code to prepare the support of new flags

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-01-11 17:35:28 +02:00
Xiang Xiao
732092570e sched/mutex: NXMUTEX_INITIALIZER should enable priority inheritance 
and remove the unused macro PRIOINHERIT_FLAGS_DISABLE

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2022-10-29 21:37:06 +02:00
anjiahao
577e550698 libc/semaphore:sem_init change defult protocol 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2022-10-22 14:50:48 +08:00
Xiang Xiao
6b31918b42 Remove the unnecessary cast for main_t, NULL and argv 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2022-10-18 08:51:45 +02:00
zhangyuan21
838309313e sched: semaphore wait list optimize 2022-09-28 18:08:37 +08:00
Zeng Zhaoxiu
5bf7c185af semphore: release all semphores' holder that the task held when exit 
Add a list in TCB to track all semphores the task held, so we
can release all holders when exit, so nxsched_verify_tcb
is unnecessary.

Signed-off-by: Zeng Zhaoxiu <walker.zeng@transtekcorp.com>
 2022-02-13 03:20:51 +08:00
Xiang Xiao
001e7c3e76 sched: Don't include nuttx/sched.h inside sched.h 
But let nuttx/sched.h include sched.h instead to
avoid expose nuttx kernel API to userspace.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-05-24 12:11:53 +09:00
Alin Jerpelea
9b9be7e1f0 include: Author: Gregory Nutt: update licenses to Apache 2.0 
Update files from Gregory Nutt to Apache 2.0 license.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-04 03:33:58 -08:00
Xiang Xiao
33ec242caf Implement proposed POSIX _clockwait variants of existing _timedwait functions 
Here is the related glibc patchset:
https://patchwork.ozlabs.org/project/glibc/cover/cover.b0c66849a87ca79889a49f2f1f2563b1a8a15d8b.1551291557.git-series.mac@mcrowe.com/

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I0095cb34cef3d0d88a100255053da79266b73ff2
 2020-07-27 20:39:59 -03:00
Gregory Nutt
e7ce9c4a79 sem_open() should return SEM_FAILED on any failures. This is change change in the POSIX specification since the original sem_open() was written so many years ago. 2017-09-08 10:14:51 -06:00
Gregory Nutt
3fb0a00c35 Small changes from review of last PR. Plus spacing and typo fix. 2017-03-22 17:32:52 -06:00
David Sidrane
60d8606b19 Priority Inversion fixes:Initalization 2017-03-10 06:38:17 -10:00
Gregory Nutt
360539afac Priority inheritance: When CONFIG_SEM_PREALLOCHOLDERS==0, there is only a single, hard-allocated holder structure. This is problem because in sem_wait() the holder is released, but needs to remain in the holder container until sem_restorebaseprio() is called. The call to sem_restorebaseprio() must be one of the last things the sem_wait() does because it can cause the task to be suspended. If in sem_wait(), a new task gets the semaphore count then it will fail to allocate the holder and will not participate in priority inheritance. This fix is to add two hard-allocated holders in the sem_t structure: One of the old holder and one for the new holder. 2017-03-10 09:30:15 -06:00
Gregory Nutt
97bf82ee05 Semaphores: Provide macros for sem_setprotobol() and sem_getprotocol() if priority inheritance is not enabled. More SEM_PRIO_* definitions to include/nuttx/semaphore.h 2016-11-02 18:21:46 -06:00
Gregory Nutt
d5b4d848d3 Move protoypes for the non-standard include/semaphore.h file to the non-standard include/nuttx/semaphore.h with the other non-standard semaphore interfaces. 2016-11-02 14:43:03 -06:00
Gregory Nutt
92d3022411 Add pthread_mutexattr_get/set_protocol and non-standard sem_get/set_protocol. These may use to enable or disable priority inheritance on a single semaphore. 2016-11-02 09:05:18 -06:00
Gregory Nutt
9b5e88af71 Update some comments 2016-03-06 13:50:26 -06:00
Gregory Nutt
cb9e27c3b0 Standardize naming used for public data and function groupings 2015-10-02 16:30:35 -06:00
Gregory Nutt
242b34cf46 Create a build structure that will (eventually) support using the VFS to manage named semaphores 2014-09-28 12:19:01 -06:00
Gregory Nutt
e18844de32 P-code BINFMT: Add logic to pass information from the binfmt logic to the P-code interpreter. This includes some extension to the binfmt interfaces. 2014-05-08 16:58:10 -06:00
patacongo
b48009644f Rename _TCB to struct tcb_s 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5610 42af7a65-404d-4744-a932-0658087f49c3
 2013-02-04 18:46:28 +00:00
patacongo
b4d999e963 Fix SEM_INITIALIZER 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5483 42af7a65-404d-4744-a932-0658087f49c3
 2013-01-06 17:34:03 +00:00
patacongo
c611d361c1 Fix some list handling associated with priority inheritance 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5053 42af7a65-404d-4744-a932-0658087f49c3
 2012-08-26 21:35:14 +00:00
patacongo
98f6034444 Updated comments; starting to implement priority protection but backed everything out but some changes to comments 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4510 42af7a65-404d-4744-a932-0658087f49c3
 2012-03-23 20:14:21 +00:00
patacongo
2f6adf5714 FTPD daemon and example now build without errors 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4371 42af7a65-404d-4744-a932-0658087f49c3
 2012-02-05 17:36:13 +00:00
patacongo
2928511cce Add sem_timedwait() 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3798 42af7a65-404d-4744-a932-0658087f49c3
 2011-07-19 13:40:15 +00:00
patacongo
eeec4073a9 Switching to C99 stdint.h types 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2340 42af7a65-404d-4744-a932-0658087f49c3
 2009-12-14 23:32:23 +00:00
patacongo
264806e5b2 Add test for CONFIG_SEM_PREALLOCHOLDERS > 0 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1596 42af7a65-404d-4744-a932-0658087f49c3
 2009-03-13 00:25:05 +00:00
patacongo
8e93df66c6 Extend, improve, and partially fix priority inheritance logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1590 42af7a65-404d-4744-a932-0658087f49c3
 2009-03-10 11:41:20 +00:00
patacongo
166b4da551 Add support for priority inheritance 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1581 42af7a65-404d-4744-a932-0658087f49c3
 2009-03-08 23:33:41 +00:00
patacongo
40f92a9da4 Z16F integration changes 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@595 42af7a65-404d-4744-a932-0658087f49c3
 2008-01-31 17:59:22 +00:00
patacongo
3f1b80218e Restructure header files for POSIX compliance; eliminate compile warnings 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@107 42af7a65-404d-4744-a932-0658087f49c3
 2007-03-20 16:51:12 +00:00
patacongo
a60059d9d0 Finally, a clean SDCC compile 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@20 42af7a65-404d-4744-a932-0658087f49c3
 2007-02-27 21:17:21 +00:00
patacongo
b08a86171f NuttX RTOS 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3
 2007-02-17 23:21:28 +00:00