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When querying the calling task itself (pid == 0 or the caller's own pid), nxsched_get_param() only filled in sched_priority and never touched the SCHED_SPORADIC related members (sched_ss_low_priority, sched_ss_max_repl, sched_ss_repl_period and sched_ss_init_budget). With CONFIG_SCHED_SPORADIC enabled, the caller received uninitialized stack garbage in these fields, and a task running under the sporadic policy could not retrieve its own sporadic parameters. Fix this by factoring the sporadic parameter fill-in into a common helper nxsched_get_sporadic_param() shared by both the self-query and the lookup paths, so both paths now return identical information. The self-query path keeps its original fast-path behavior: no TCB lookup and a lock-free read of sched_priority. Only the read of the sporadic state is wrapped in a critical section, because tcb->sporadic may be freed concurrently, e.g. by sched_setscheduler() from another CPU switching the task away from SCHED_SPORADIC. Signed-off-by: yushuailong <yyyusl@qq.com> |
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| dummy | ||
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| graphics | ||
| include | ||
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| mm | ||
| net | ||
| openamp | ||
| pass1 | ||
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| tools | ||
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| AUTHORS | ||
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| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
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| README.md | ||
| ReleaseNotes | ||
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
Getting Started
First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.
Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.