Philippe,
Thank you very much.Exactly as you say, the reason is that my code isn't lastest. Best regards. At 2017-02-07 23:17:28, "Philippe Gerum" <[email protected]> wrote: >On 02/07/2017 03:19 PM, [email protected] wrote: >> Just now when I compiling xenomai, removed "--enable-pshared" >> configuration option. My demo is normal finally, and print out third >> sentence "enter func ..." without segmentaion fault. > >I believe that you are not using the right code. Did you pull the code >from the stable-3.0.x branch as mentioned earlier? > >If you did so, you should see this output when passing the --version >switch to your program: > >based on Xenomai/mercury v3.0.3 -- #00e3d01 (2017-01-27 10:16:11 +0100) > >> Although the question is solved temporarily , but still don't know the >> reason. So I'm still worried about my system environment have some problems. >> >> Thanks again, best regards. >> >> >> 发自网易邮箱大师 >> >> 在2017年02月07日 14:18，[email protected] >> <mailto:[email protected]> 写道： >> Thank you for help. >> I had git clone git://git.xenomai.org/xenomai-3.git, compile and >> install it with： >> ./scripts/bootstrap >> ../xenomai-3/configure --with-core=mercury --enable-smp >> --enable-pshared --enable-debug=full >> make install >> Then run my demo, but the result is the same as before ： >> >> ---------------------------------------------------------------------------------------------------------- >> 0"002.570| WARNING: [main] Xenomai compiled with full debug enabled, >> very high latencies expected >> [--enable-debug=full] >> enter func ... >> enter func ... >> rt_task_create: >> ../../../xenomai-3/lib/copperplate/heapobj-pshared.c:452: >> alloc_block: Assertion `0' failed. >> Aborted >> >> ---------------------------------------------------------------------------------------------------------- >> Yesterday, I add some printf to alloc_block() of heapobj-pshared.c. >> I found that segmentaion fault occur when run to the >> line 455 "++extent->pagemap[pgnum].bcount;" . At this time the value >> of "heap->buckets[ilog].freelist" is very big. >> >> Now I think whether my xenomai >> configuration or system environment have something wrong. >> Besides, my system(x86_64bit) run in a 8 cores Oracle virtual >> machine, the host cpu is Inter(R) xeon(R) CPU E5-2630 v4 @ 2.20GHz. >> I don't know whether these information is useful. >> >> Thanks in advance, best regards. >> >> >> >> At 2017-02-06 21:50:13, "Philippe Gerum" <[email protected] >> <mailto:[email protected]>> wrote: >> >On 02/06/2017 02:30 AM, [email protected] >> <mailto:[email protected]> wrote: >> >> System configuration: >> >> debian-8.6, 3.18.46-rt50 >> >> Xenomai/mercury v3.0.3 >> >> Build args: --with-core=mercury --enable-smp --enable-pshared >> >> >> >> Now I am need help. Thanks. >> >> >> >> >> >> -------- Forwarding messages -------- >> >> From: "[email protected] <mailto:[email protected]>" >> <[email protected] <mailto:[email protected]>> >> >> Date: 2017-02-04 12:04:15 >> >> To: [email protected] <mailto:[email protected]> >> >> Subject: some API about RT_TASK occur Segmentation fault >> >> Hi >> >> During using API about RT_TASK I found some doubt. >> >> 1) rt_task_inquire(RT_TASK * task, RT_TASK_INFO * info ), if info is >> >> NULL will occur Segmentation fault, but in API reference this is >> valid. >> >> >> http://www.xenomai.org/documentation/xenomai-3/html/xeno3prm/group__alchemy__task.html#ga53bad6acf5496f8008e594954507dce8 >> >> >> >> 2) After main task called rt_task_shadow(), program will create other >> >> tasks depend on request, but when create second task will occur >> >> Segmentation fault. >> >> Now main task don't call rt_task_shadow(), program will OK. I don't >> >> know why. >> >> >> >> 3) I write a demo which create the same task three times as follows: >> >> #include <stdio.h> >> >> #include <unistd.h> >> >> #include <alchemy/task.h> >> >> RT_TASK task1; >> >> void func(void *arg) >> >> { >> >> printf("enter func ...\n"); >> >> } >> >> int main() >> >> { >> >> rt_task_spawn(&task1, "task1", 0, 80, 0, func, NULL); >> >> sleep(1); >> >> rt_task_spawn(&task1, "task1", 0, 80, 0, func, NULL); >> >> sleep(1); >> >> rt_task_spawn(&task1, "task1", 0, 80, 0, func, NULL); >> >> //rt_task_delete(&task1); >> >> return 0; >> >> } >> >> >> >> When the third time create , program will occur Segmentation fault. >> >> >> > >> >This bug was fixed in the stable branch some time ago: >> >git://git.xenomai.org/xenomai-3.git, branch stable-3.0.x >> > >> >-- >> >Philippe. >> >> >> >> >> > > >-- >Philippe. _______________________________________________ Xenomai mailing list [email protected] https://xenomai.org/mailman/listinfo/xenomai
