On 10/14/2015 02:21 PM, Frederik Bayart wrote: >> On Wednesday, 14 October 2015, 12:43, Philippe Gerum <r...@xenomai.org> >> wrote: >> On 10/14/2015 12:22 PM, Frederik Bayart wrote: >>> Hallo, >>> I'm using xenomai 3.0 on kernel 3.18.20 (64 bit). >>> >>> When using single block heap, I'm getting memory allocation problem when >>> calling rt_heap_alloc with size 0. I don't get the error when calling the >>> function with size used in rt_heap_create. >>> On the mailing list, I found there has been an issue with this in May : >>> http://www.xenomai.org/pipermail/xenomai/2015-May/034165.html >>> Is this still an issue ? >> >> No, this one is long gone. >> >>> >>> In attachment a test program htest.c + makefile to generate the problem : >>> >>> $ sudo ./htest 1 ==> use 0 >>> htest.c:69: heapsize = 70000, usablemem = 70144, usedmem = 0 >>> htest.c:79 ERROR: rt_heap_alloc(-12): Cannot allocate memory >>> >>> $ sudo ./htest 1 ==> use same size as in create >>> htest.c:69: heapsize = 70000, usablemem = 70144, usedmem = 0 >>> htest.c:92: heapsize = 70000, usablemem = 70144, usedmem = 70144 >>> >> >> Does this help? >> >> diff --git a/lib/alchemy/heap.c b/lib/alchemy/heap.c >> index 20531e3..146bfa1 100644 >> --- a/lib/alchemy/heap.c >> +++ b/lib/alchemy/heap.c >> @@ -442,7 +442,9 @@ int rt_heap_alloc_timed(RT_HEAP *heap, >> p = __mptr(hcb->sba); >> if (p) >> goto done; >> - if (size > 0 && size != hcb->size) { >> + if (size == 0) >> + size = heapobj_size(&hcb->hobj); >> + else if (size != hcb->size) { >> ret = -EINVAL; >> goto done; >> >> } >> > > After code reading, could it be that the exception for size == 0 has > disappeared in the released code ? >
Did you try that patch? -- Philippe. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org http://xenomai.org/mailman/listinfo/xenomai
