wangchdo opened a new pull request, #17368: URL: https://github.com/apache/nuttx/pull/17368
## Summary Introduce the nxched_nanosleep() API to provide a lightweight nanosecond-level sleep based on nxsched_ticksleep(). This API offers the same functionality as nxsig_nanosleep() but without signal-related overhead, making it suitable for implementing libc sleep() or usleep() when signals are disabled. ## Impact New api added, no impact to existing nuttx functions ## Testing **ostest passed on board fvp-armv8r-aarch32** ``` NuttShell (NSH) nsh> [ 0] Idle_Task: nx_start: CPU0: Beginning Idle Loop nsh> nsh> uname -a NuttX 0.0.0 3e83236063 Nov 23 2025 23:19:00 arm fvp-armv8r-aarch32 nsh> ostest (...) user_main: vfork() test [ 4] ostest: arm_fork: fork context [0x2000f6b8]: [ 4] ostest: arm_fork: r4:20003860 r5:00000000 r6:00000000 r7:00000000 [ 4] ostest: arm_fork: r8:00000000 r9:00000000 r10:00000000 [ 4] ostest: arm_fork: r11:00000000 sp:2000f6e0 lr:00055f04 [ 4] ostest: nxtask_setup_fork: Child priority=100 start=0x55f04 [ 4] ostest: nxtask_setup_fork: parent=0x2000d358, returning child=0x2000f790 [ 4] ostest: arm_fork: TCBs: Parent=0x2000d358 Child=0x2000f790 [ 4] ostest: arm_fork: Parent: stackutil:152 [ 4] ostest: arm_fork: Old stack top:2000f778 SP:2000f6e0 FP:00000000 [ 4] ostest: arm_fork: New stack top:20013a80 SP:200139e8 FP:00000000 [ 4] ostest: nxtask_start_fork: Starting Child TCB=0x2000f790 [ 4] ostest: nxtask_activate: ostest pid=85,TCB=0x2000f790 [85] ostest: nxtask_exit: ostest pid=85,TCB=0x2000f790 vfork_test: Child 85 ran successfully Final memory usage: VARIABLE BEFORE AFTER ======== ======== ======== arena 7ff9d3c 7ff9d3c ordblks 1 5 mxordblk 7ff0880 7febf08 uordblks 94bc b55c fordblks 7ff0880 7fee7e0 user_main: Exiting [ 4] ostest: nxtask_exit: ostest pid=4,TCB=0x2000d358 ostest_main: Exiting with status 0 stdio_test: Standard I/O Check: fprintf to stderr [ 3] ostest: nxtask_exit: ostest pid=3,TCB=0x2000af38 nsh> ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
