Hi all, This is a brief week status report about my GSOC2013 project ----- atomic ops support for RTEMS.
DONE: 1. Discuss with mentor to define the new atomic API. 2. Implement a generic architecture-depend part atomic ops based on std atomic.h 3. Test on ARM architecture realview_pbx_a9_qemu_smp BSP. 4. Add conditional check for atomic support when build. TODO: 1. Clean up old atomic related files 2. Design new atomic test case based on new API and implementation. Blog updates: http://weiy.github.io WeiY Best Regards 在 2013-6-24，下午4:16，Sebastian Huber <sebastian.hu...@embedded-brains.de> 写道： > Hello Wei, > > great, you have now a good development environment. > > I work currently on a requirements document for the atomic operations API. > It was not really clear what we need for the SMP support in RTEMS, but since > I worked on this topic the last couple of months I have now a better > understanding of the requirements. > > Hopefully we can implement the ticket locks for example in > > http://git.rtems.org/rtems/tree/cpukit/score/cpu/powerpc/rtems/score/cpusmplock.h > http://git.rtems.org/rtems/tree/cpukit/score/cpu/arm/rtems/score/cpusmplock.h > > with the atomic operations and get sufficiently efficient code. > > Other applications are a phase-fair read-write lock (for example to read and > update the ticks since boot), a sense barrier or lock-free updates of heir to > executing thread changes. > > On 06/22/2013 03:59 PM, Deng Hengyi wrote: >> Hi all, >> >> This is a brief status report about my GSOC2013 project ----- atomic ops >> support for RTEMS. >> >> DONE: >> 1. Setup the development environment including the latest rtems git repo, >> rtems-test git repo and qemu for realview_pbx_a9. >> 2. Build the latest rtems toolchains which include the stdatomic.h support. >> 3. Modify the existing atomic API to be compatible with C11 std atomic.h. >> 4. Replace the existing atomic SMP implementation with stdatomic.h. >> 5. Build the spatomic and smpatomic test case for realview_pbx_a9 SMP and UP. >> 6. All the spatomic and smpatomic have been passed. >> 7. Have submit the patches to devel list to be reviewed. >> >> TODO. >> 1. Plan to integrate the patches into mainline. >> 2. Support the stdatomic.h for other architectures such as PowerPC, Mips and >> Sparc. >> 3. Add the detection for whether support stdatomic.h for some architectures. >> >> WeiY >> Best Regards >> > > > -- > Sebastian Huber, embedded brains GmbH > > Address : Dornierstr. 4, D-82178 Puchheim, Germany > Phone : +49 89 189 47 41-16 > Fax : +49 89 189 47 41-09 > E-Mail : sebastian.hu...@embedded-brains.de > PGP : Public key available on request. > > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. _______________________________________________ rtems-devel mailing list rtems-devel@rtems.org http://www.rtems.org/mailman/listinfo/rtems-devel
