gcj 4.6 on OpenBSD/x86

Wed Oct 10 13:33:00 GMT 2012

On 10/9/12 1:21 PM, Boehm, Hans wrote:
> It may be worth checking whether the garbage collector tests, particularly gctest, run correctly in your environment. If not, that might give you an easier debugging task.
>> Hans
Hi Hans,
Initially gctest was failing which was caused by OpenBSD not having 
pthread_getattr_np(). We have pthread_stackseg_np() so I put an OpenBSD 
specific implementation into pthread_support.c 
GC_get_thread_stack_base(). This corrected the gctest failure and 'gmake 
check' passes all tests now. However gjar still segfaults unless 
GC_DONT_GC is used.
Based on the output below is there a place you can suggest I look for 
the problem? or can you suggest a way for me to isolate which part of GC 
is not setup correctly on OpenBSD?
Thanks,
-Kurt
$ GC_PRINT_STATS=1 ./.libs/gjar cf test.jar headers.stamp
Increasing heap size by 65536 after 0 allocated bytes
Initiating full world-stop collection 1 after 0 allocd bytes
--> Marking for collection 1 after 0 allocd bytes + 0 wasted bytes
Collection 0 finished ---> heapsize = 65536 bytes
World-stopped marking took 30 msecs
Complete collection took 30 msecs
Grew fo table to 1 entries
Grew fo table to 2 entries
Grew fo table to 4 entries
Grew fo table to 8 entries
Increasing heap size by 65536 after 11436 allocated bytes
Grew fo table to 16 entries
Grew fo table to 32 entries
Grew fo table to 64 entries
Grew fo table to 128 entries
Increasing heap size by 65536 after 22796 allocated bytes
Grew fo table to 256 entries
Grew fo table to 512 entries
Increasing heap size by 69632 after 78976 allocated bytes
Increasing heap size by 90112 after 146000 allocated bytes
Increasing heap size by 122880 after 224344 allocated bytes
Grew fo table to 1024 entries
Grew dl table to 1 entries
Grew dl table to 2 entries
Grew dl table to 4 entries
Grew dl table to 8 entries
Increasing heap size by 163840 after 328216 allocated bytes
Increasing heap size by 217088 after 480352 allocated bytes
Increasing heap size by 290816 after 704192 allocated bytes
Increasing heap size by 385024 after 1003400 allocated bytes
Increasing heap size by 516096 after 1367328 allocated bytes
Grew dl table to 16 entries
Grew fo table to 2048 entries
Increasing heap size by 733184 after 1869512 allocated bytes
Increasing heap size by 929792 after 2607408 allocated bytes
Increasing heap size by 1241088 after 3531840 allocated bytes
Initiating full world-stop collection 2 after 4753976 allocd bytes
--> Marking for collection 2 after 4753976 allocd bytes + 36728 wasted bytes
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Mark stack overflow; current size = 4096 entries
Grew mark stack to 8192 frames
Collection 1 finished ---> heapsize = 4988928 bytes
World-stopped marking took 90 msecs
Complete collection took 90 msecs
Segmentation fault (core dumped)