Hello experts, I was moving some prototyping work done in python for API programming, back to C, for performance reasons. Unfortunately I am stuck with a crash at this place , tracing from vl_client_connect_to_vlib() thru vl_map_shmem. I am following the instructions here. (
https://wiki.fd.io/view/VPP/How_To_Use_The_C_API ) ( https://wiki.fd.io/view/VPP/How_To_Use_The_C_API ) I suspect I am linking a wrong library.? VPPAPITEST works perfect. though . I linked the following set of libraries. (-lvlibmemoryclient -lsvm -lvlib. -lpthread -lm -lrt -ldl -lcrypto). Seeing this in 19.04 VPP, and also in 18.10. It has got something to do with the heap set to 0 for some wierd reason in (heap = clib_per_cpu_mheaps[cpu];) in the function clib_mem_alloc_aligned_at_offset (). (gdb) bt #0 mspace_malloc (msp=0x0, bytes=bytes@entry=20) at /home/ubuntu/vpp/vpp/src/vppinfra/dlmalloc.c:4338 #1 0x00007ffff73822f8 in mspace_get_aligned (msp=0x0, n_user_data_bytes=20, n_user_data_bytes@entry=16, align=align@entry=8, align_offset=align_offset@entry=8) at /home/ubuntu/vpp/vpp/src/vppinfra/dlmalloc.c:4177 #2 0x00007ffff73775e8 in clib_mem_alloc_aligned_at_offset ( os_out_of_memory_on_failure=1, align_offset=8, align=8, size=16) at /home/ubuntu/vpp/vpp/src/vppinfra/mem.h:118 #3 vec_resize_allocate_memory (v=v@entry=0x0, length_increment=length_increment@entry=8, data_bytes=16, header_bytes=<optimized out>, header_bytes@entry=0, data_align=data_align@entry=8) at /home/ubuntu/vpp/vpp/src/vppinfra/vec.c:59 #4 0x00007ffff731d9b6 in _vec_resize_inline (data_align=<optimized out>, header_bytes=<optimized out>, data_bytes=<optimized out>, length_increment=<optimized out>, v=<optimized out>) at /home/ubuntu/vpp/vpp/src/vppinfra/vec.h:147 #5 va_format (s=0x0, fmt=<optimized out>, va=va@entry=0x7fffffffe358) at /home/ubuntu/vpp/vpp/src/vppinfra/format.c:403 #6 0x00007ffff731d907 in format (s=s@entry=0x0, fmt=fmt@entry=0x7ffff7bd192c "/dev/shm%s%c") at /home/ubuntu/vpp/vpp/src/vppinfra/format.c:423 #7 0x00007ffff7bc6544 in vl_map_shmem ( region_name=0x5555555566aa "vpe-api", is_vlib=is_vlib@entry=0) at /home/ubuntu/vpp/vpp/src/vlibmemory/memory_shared.c:545 #8 0x00007ffff7bc78eb in vl_client_api_map (region_name=<optimized out>) at /home/ubuntu/vpp/vpp/src/vlibmemory/memory_client.c:389 #9 0x00007ffff7bc792c in connect_to_vlib_internal ( svm_name=<optimized out>, client_name=0x55555555669e "vpp-manager", rx_queue_size=32, want_pthread=1, do_map=<optimized out>) at /home/ubuntu/vpp/vpp/src/vlibmemory/memory_client.c:416 #10 0x00005555555560fe in main () (gdb) Thanks, Milan
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