[Mono-dev] Running --profiler=log:coverage
Alex Rønne Petersen
alex at alexrp.com
Thu Mar 3 14:44:22 UTC 2016
Hi,
The "time went backwards" message is harmless and has been removed in
later Mono versions.
Could you have a look at the crash, Iain? (cc)
On Thu, Mar 3, 2016 at 2:00 PM, Antoine Cailliau
<antoinecailliau at gmail.com> wrote:
> Hello,
>
> I'm trying to measure the code coverage of a test suite. I noticed that
> recently (Apr'15) cov and monocov were removed for log:coverage profiler.
>
> When I'm running that profile on my tests using nunit-console. I got a
> segmentation fault, see below. When using mprof-report, I do not get the
> section related to code coverage.
>
> What I use to run the tests :
> $ MONO_OPTIONS="--profile=log:coverage,covfilter=+MinePumpSystem.Test"
> nunit-console MinePumpSystem.Test.dll
>
> Plus, it is displaying "time went backwards" a lot.
>
> Anyone with any tips on how I could get this to work is welcome :-)
>
> Regards,
>
> Antoine
>
> -- The trace :
>
> tacktrace:
>
>
> Native stacktrace:
>
>
> Debug info from gdb:
>
> (lldb) command source -s 0 '/tmp/mono-gdb-commands.2cpqir'
> Executing commands in '/tmp/mono-gdb-commands.2cpqir'.
> (lldb) process attach --pid 47647
> warning: (i386)
> /Library/Frameworks/Mono.framework/Versions/4.2.2/lib/mono/4.5/mscorlib.dll.dylib
> empty dSYM file detected, dSYM was created with an executable with no debug
> info.
> Process 47647 stopped
> * thread #1: tid = 0x109c479, 0x92bb6d06 libsystem_kernel.dylib`__wait4 +
> 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
> frame #0: 0x92bb6d06 libsystem_kernel.dylib`__wait4 + 10
> libsystem_kernel.dylib`__wait4:
> -> 0x92bb6d06 <+10>: jae 0x92bb6d16 ; <+26>
> 0x92bb6d08 <+12>: calll 0x92bb6d0d ; <+17>
> 0x92bb6d0d <+17>: popl %edx
> 0x92bb6d0e <+18>: movl 0x104be317(%edx), %edx
>
> Executable module set to
> "/Library/Frameworks/Mono.framework/Versions/4.2.2/bin/mono".
> Architecture set to: i386-apple-macosx.
> (lldb) thread list
> Process 47647 stopped
> * thread #1: tid = 0x109c479, 0x92bb6d06 libsystem_kernel.dylib`__wait4 +
> 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
> thread #2: tid = 0x109c47a, 0x92bb6402
> libsystem_kernel.dylib`__psynch_cvwait + 10
> thread #3: tid = 0x109c47b, 0x92baf886
> libsystem_kernel.dylib`semaphore_wait_trap + 10
> thread #4: tid = 0x109c47c, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> thread #5: tid = 0x109c47d, 0x92bb7812 libsystem_kernel.dylib`kevent_qos +
> 10, queue = 'com.apple.libdispatch-manager'
> thread #6: tid = 0x109c47e, 0x0027008d mono`mono_hazard_pointer_get + 13
> at hazard-pointer.c:176
> thread #7: tid = 0x109c482, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> thread #8: tid = 0x109c484, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> (lldb) thread backtrace all
> mono was compiled with optimization - stepping may behave oddly; variables
> may not be available.
> * thread #1: tid = 0x109c479, 0x92bb6d06 libsystem_kernel.dylib`__wait4 +
> 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
> * frame #0: 0x92bb6d06 libsystem_kernel.dylib`__wait4 + 10
> frame #1: 0x969f07dc libsystem_c.dylib`waitpid$UNIX2003 + 48
> frame #2: 0x000d7f2d mono`mono_handle_native_sigsegv(signal=11,
> ctx=0x007abfe0, info=0x007abfa0) + 541 at mini-exceptions.c:2193 [opt]
> frame #3: 0x00124482
> mono`mono_arch_handle_altstack_exception(sigctx=<unavailable>,
> siginfo=<unavailable>, fault_addr=<unavailable>, stack_ovf=0) + 162 at
> exceptions-x86.c:1097 [opt]
> frame #4: 0x0002540e
> mono`mono_sigsegv_signal_handler(_dummy=<unavailable>, _info=<unavailable>,
> context=<unavailable>) + 446 at mini-runtime.c:2471 [opt]
> frame #5: 0x9aad301b libsystem_platform.dylib`_sigtramp + 43
> frame #6: 0x96973051 libsystem_c.dylib`strlen + 17
> frame #7: 0x00690b48
> libmono-profiler-log.0.dylib`build_assembly_buffer(key=0x79962860,
> value=0x79962860, userdata=<unavailable>) + 216 at proflog.c:3514 [opt]
> frame #8: 0x00277150
> mono`mono_conc_hashtable_foreach(hash_table=<unavailable>,
> func=<unavailable>, userdata=<unavailable>) + 80 at
> mono-conc-hashtable.c:365 [opt]
> frame #9: 0x0068520a libmono-profiler-log.0.dylib`log_shutdown [inlined]
> dump_coverage(prof=0x79960ba0) + 92 at proflog.c:3544 [opt]
> frame #10: 0x006851ae
> libmono-profiler-log.0.dylib`log_shutdown(prof=0x79960ba0) + 46 at
> proflog.c:3851 [opt]
> frame #11: 0x001b7262 mono`mono_profiler_shutdown + 50 at profiler.c:813
> [opt]
> frame #12: 0x0002861a mono`mini_cleanup(domain=0x79863ce0) + 778 at
> mini-runtime.c:3455 [opt]
> frame #13: 0x000a2f61 mono`mono_main(argc=<unavailable>,
> argv=<unavailable>) + 8001 at driver.c:2083 [opt]
> frame #14: 0x0001ab50 mono`main [inlined]
> mono_main_with_options(argc=<unavailable>, argv=<unavailable>) + 768 at
> main.c:94 [opt]
> frame #15: 0x0001a86d mono`main(argc=<unavailable>, argv=<unavailable>)
> + 29 at main.c:125 [opt]
> frame #16: 0x0001a845 mono`start + 53
>
> thread #2: tid = 0x109c47a, 0x92bb6402
> libsystem_kernel.dylib`__psynch_cvwait + 10
> frame #0: 0x92bb6402 libsystem_kernel.dylib`__psynch_cvwait + 10
> frame #1: 0x95c80f6b libsystem_pthread.dylib`_pthread_cond_wait + 757
> frame #2: 0x95c84cc0 libsystem_pthread.dylib`pthread_cond_wait$UNIX2003
> + 71
> frame #3: 0x0024b7e2 mono`thread_func(thread_data=0x00000000) + 466 at
> sgen-thread-pool.c:118 [opt]
> frame #4: 0x95c80a26 libsystem_pthread.dylib`_pthread_body + 138
> frame #5: 0x95c8099c libsystem_pthread.dylib`_pthread_start + 155
> frame #6: 0x95c7df96 libsystem_pthread.dylib`thread_start + 34
>
> thread #3: tid = 0x109c47b, 0x92baf886
> libsystem_kernel.dylib`semaphore_wait_trap + 10
> frame #0: 0x92baf886 libsystem_kernel.dylib`semaphore_wait_trap + 10
> frame #1: 0x0026e2da mono`mono_sem_wait(sem=0x0034e090, alertable=1) +
> 26 at mono-semaphore.c:109 [opt]
> frame #2: 0x001eb40e mono`finalizer_thread(unused=0x00000000) + 158 at
> gc.c:1096 [opt]
> frame #3: 0x001c5451 mono`start_wrapper [inlined] start_wrapper_internal
> + 516 at threads.c:725 [opt]
> frame #4: 0x001c524d mono`start_wrapper(data=<unavailable>) + 29 at
> threads.c:772 [opt]
> frame #5: 0x00275e70 mono`inner_start_thread(arg=<unavailable>) + 240 at
> mono-threads-posix.c:97 [opt]
> frame #6: 0x95c80a26 libsystem_pthread.dylib`_pthread_body + 138
> frame #7: 0x95c8099c libsystem_pthread.dylib`_pthread_start + 155
> frame #8: 0x95c7df96 libsystem_pthread.dylib`thread_start + 34
>
> thread #4: tid = 0x109c47c, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #0: 0x92bb6d76 libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #1: 0x95c8052d libsystem_pthread.dylib`_pthread_wqthread + 1289
> frame #2: 0x95c7df72 libsystem_pthread.dylib`start_wqthread + 34
>
> thread #5: tid = 0x109c47d, 0x92bb7812 libsystem_kernel.dylib`kevent_qos +
> 10, queue = 'com.apple.libdispatch-manager'
> frame #0: 0x92bb7812 libsystem_kernel.dylib`kevent_qos + 10
> frame #1: 0x9aa4670e libdispatch.dylib`_dispatch_mgr_invoke + 234
> frame #2: 0x9aa462e2 libdispatch.dylib`_dispatch_mgr_thread + 52
>
> thread #6: tid = 0x109c47e, 0x0027008d mono`mono_hazard_pointer_get + 13
> at hazard-pointer.c:176
> frame #0: 0x0027008d mono`mono_hazard_pointer_get + 13 at
> hazard-pointer.c:176 [opt]
> frame #1: 0x00270afa mono`mono_lock_free_queue_dequeue(q=0x79960bd8) +
> 26 at lock-free-queue.c:214 [opt]
> frame #2: 0x0068e072
> libmono-profiler-log.0.dylib`writer_thread(arg=0x00270aee) + 434 at
> proflog.c:4164 [opt]
> frame #3: 0x95c80a26 libsystem_pthread.dylib`_pthread_body + 138
> frame #4: 0x95c8099c libsystem_pthread.dylib`_pthread_start + 155
> frame #5: 0x95c7df96 libsystem_pthread.dylib`thread_start + 34
>
> thread #7: tid = 0x109c482, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #0: 0x92bb6d76 libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #1: 0x95c8052d libsystem_pthread.dylib`_pthread_wqthread + 1289
> frame #2: 0x95c7df72 libsystem_pthread.dylib`start_wqthread + 34
>
> thread #8: tid = 0x109c484, 0x92bb6d76
> libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #0: 0x92bb6d76 libsystem_kernel.dylib`__workq_kernreturn + 10
> frame #1: 0x95c8052d libsystem_pthread.dylib`_pthread_wqthread + 1289
> frame #2: 0x95c7df72 libsystem_pthread.dylib`start_wqthread + 34
> (lldb) detach
>
> =================================================================
> Got a SIGSEGV while executing native code. This usually indicates
> a fatal error in the mono runtime or one of the native libraries
> used by your application.
> =================================================================
>
> Process 47647 detached
> (lldb) quit
> Abort trap: 6
>
>
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