sQklBG4PuaVl4lwwkGu49 changeset

Changeset323164306366 (b)
ParentNone (a)
ab
0+dave@akai ~ % lldb process attach -n beam.smp                                                                                             
0+Warning: program arguments are ignored when attaching.
0+Attaching to process with:
0+    process attach -n "beam.smp"
0+Process 94307 stopped
0+Executable module set to "/usr/local/Cellar/erlang/R15B01/lib/erlang/erts-5.9.1/bin/beam.smp".
0+Architecture set to: x86_64.
0+(lldb) c
0+Process 94307 resuming
0+Process 94307 stopped
0+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
0+    frame #0: 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15
0+libsystem_c.dylib`flockfile + 15:
0+-> 0x7fff89f8c1ec:  movq   104(%rbx), %rdi
0+   0x7fff89f8c1f0:  cmpq   %rax, 72(%rdi)
0+   0x7fff89f8c1f4:  jne    0x00007fff89f8c1fe       ; flockfile + 33
0+   0x7fff89f8c1f6:  incl   80(%rdi)
0+(lldb) thread list
0+Process 94307 stopped
0+  thread #1: tid = 0x1f03, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+  thread #2: tid = 0x2103, 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
0+  thread #3: tid = 0x2203, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #4: tid = 0x2303, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #5: tid = 0x2403, 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
0+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
0+  thread #7: tid = 0x2603, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+  thread #8: tid = 0x2703, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #9: tid = 0x2803, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #10: tid = 0x2903, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #11: tid = 0x2a03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #12: tid = 0x2b03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+  thread #13: tid = 0x2c03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+(lldb) thread backtrace all
0+  thread #1: tid = 0x1f03, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+    frame #0: 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+    frame #1: 0x0000000016841537 beam.smp`erts_sys_main_thread + 205
0+    frame #2: 0x000000001677036f beam.smp`erl_start + 4044
0+    frame #3: 0x000000001675a3d5 beam.smp`main + 9
0+    frame #4: 0x000000001675a3c4 beam.smp`start + 52
0+
0+  thread #2: tid = 0x2103, 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
0+    frame #0: 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
0+    frame #1: 0x0000000016841a33 beam.smp`signal_dispatcher_thread_func + 45
0+    frame #2: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #3: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #4: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #3: tid = 0x2203, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x000000001688e5bd beam.smp`ethr_cond_wait + 9
0+    frame #3: 0x000000001678e3af beam.smp`sys_msg_dispatcher_func + 327
0+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #4: tid = 0x2303, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x000000001688e5bd beam.smp`ethr_cond_wait + 9
0+    frame #3: 0x0000000016842234 beam.smp`child_waiter + 650
0+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #5: tid = 0x2403, 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
0+    frame #0: 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
0+    frame #1: 0x00000000167b3e21 beam.smp`schedule + 6745
0+    frame #2: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #3: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
0+    frame #0: 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15
0+    frame #1: 0x00007fff89f2c938 libsystem_c.dylib`putc + 32
0+    frame #2: 0x000000001687645c beam.smp`write_buf + 273
0+    frame #3: 0x0000000016876a91 beam.smp`insert_buf + 481
0+    frame #4: 0x000000001687608a beam.smp`put_chars + 9
0+    frame #5: 0x00000000168756ba beam.smp`ttysl_from_erlang + 110
0+    frame #6: 0x00000000167a1350 beam.smp`erts_write_to_port + 3056
0+    frame #7: 0x00000000167a273e beam.smp`erts_port_command + 256
0+    frame #8: 0x0000000016799db7 beam.smp`do_send + 1319
0+    frame #9: 0x00000000167995cf beam.smp`erl_send + 38
0+    frame #10: 0x00000000168248ec beam.smp`process_main + 18935
0+    frame #11: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #12: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #13: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #14: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #7: tid = 0x2603, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+    frame #0: 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
0+    frame #1: 0x0000000016848988 beam.smp`erts_poll_wait_nkp + 355
0+    frame #2: 0x000000001684a762 beam.smp`erts_check_io_nkp + 151
0+    frame #3: 0x00000000167b4304 beam.smp`schedule + 7996
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #8: tid = 0x2703, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #9: tid = 0x2803, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #10: tid = 0x2903, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #11: tid = 0x2a03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #12: tid = 0x2b03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
0+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
0+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
0+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+
0+  thread #13: tid = 0x2c03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
0+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
0+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
0+    frame #3: 0x00000000167afdab beam.smp`aux_thread + 343
0+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
0+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
0+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
0+(lldb) frame variable
0+(lldb)
...
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--- Revision None
+++ Revision 323164306366
@@ -0,0 +1,167 @@
+dave@akai ~ % lldb process attach -n beam.smp                                                                                              
+Warning: program arguments are ignored when attaching.
+Attaching to process with:
+    process attach -n "beam.smp"
+Process 94307 stopped
+Executable module set to "/usr/local/Cellar/erlang/R15B01/lib/erlang/erts-5.9.1/bin/beam.smp".
+Architecture set to: x86_64.
+(lldb) c
+Process 94307 resuming
+Process 94307 stopped
+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
+    frame #0: 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15
+libsystem_c.dylib`flockfile + 15:
+-> 0x7fff89f8c1ec:  movq   104(%rbx), %rdi
+   0x7fff89f8c1f0:  cmpq   %rax, 72(%rdi)
+   0x7fff89f8c1f4:  jne    0x00007fff89f8c1fe       ; flockfile + 33
+   0x7fff89f8c1f6:  incl   80(%rdi)
+(lldb) thread list
+Process 94307 stopped
+  thread #1: tid = 0x1f03, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+  thread #2: tid = 0x2103, 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
+  thread #3: tid = 0x2203, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #4: tid = 0x2303, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #5: tid = 0x2403, 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
+  thread #7: tid = 0x2603, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+  thread #8: tid = 0x2703, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #9: tid = 0x2803, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #10: tid = 0x2903, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #11: tid = 0x2a03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #12: tid = 0x2b03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+  thread #13: tid = 0x2c03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+(lldb) thread backtrace all
+  thread #1: tid = 0x1f03, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+    frame #0: 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+    frame #1: 0x0000000016841537 beam.smp`erts_sys_main_thread + 205
+    frame #2: 0x000000001677036f beam.smp`erl_start + 4044
+    frame #3: 0x000000001675a3d5 beam.smp`main + 9
+    frame #4: 0x000000001675a3c4 beam.smp`start + 52
+
+  thread #2: tid = 0x2103, 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
+    frame #0: 0x00007fff921ecaf2 libsystem_kernel.dylib`read + 10
+    frame #1: 0x0000000016841a33 beam.smp`signal_dispatcher_thread_func + 45
+    frame #2: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #3: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #4: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #3: tid = 0x2203, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x000000001688e5bd beam.smp`ethr_cond_wait + 9
+    frame #3: 0x000000001678e3af beam.smp`sys_msg_dispatcher_func + 327
+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #4: tid = 0x2303, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x000000001688e5bd beam.smp`ethr_cond_wait + 9
+    frame #3: 0x0000000016842234 beam.smp`child_waiter + 650
+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #5: tid = 0x2403, 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
+    frame #0: 0x00000000167bacf3 beam.smp`sched_spin_wait + 37
+    frame #1: 0x00000000167b3e21 beam.smp`schedule + 6745
+    frame #2: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #3: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+* thread #6: tid = 0x2503, 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
+    frame #0: 0x00007fff89f8c1ec libsystem_c.dylib`flockfile + 15
+    frame #1: 0x00007fff89f2c938 libsystem_c.dylib`putc + 32
+    frame #2: 0x000000001687645c beam.smp`write_buf + 273
+    frame #3: 0x0000000016876a91 beam.smp`insert_buf + 481
+    frame #4: 0x000000001687608a beam.smp`put_chars + 9
+    frame #5: 0x00000000168756ba beam.smp`ttysl_from_erlang + 110
+    frame #6: 0x00000000167a1350 beam.smp`erts_write_to_port + 3056
+    frame #7: 0x00000000167a273e beam.smp`erts_port_command + 256
+    frame #8: 0x0000000016799db7 beam.smp`do_send + 1319
+    frame #9: 0x00000000167995cf beam.smp`erl_send + 38
+    frame #10: 0x00000000168248ec beam.smp`process_main + 18935
+    frame #11: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #12: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #13: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #14: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #7: tid = 0x2603, 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+    frame #0: 0x00007fff921ebdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
+    frame #1: 0x0000000016848988 beam.smp`erts_poll_wait_nkp + 355
+    frame #2: 0x000000001684a762 beam.smp`erts_check_io_nkp + 151
+    frame #3: 0x00000000167b4304 beam.smp`schedule + 7996
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #8: tid = 0x2703, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #9: tid = 0x2803, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #10: tid = 0x2903, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #11: tid = 0x2a03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #12: tid = 0x2b03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167b3e4d beam.smp`schedule + 6789
+    frame #4: 0x00000000168203e6 beam.smp`process_main + 1265
+    frame #5: 0x00000000167afbfc beam.smp`sched_thread_func + 506
+    frame #6: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #7: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #8: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+
+  thread #13: tid = 0x2c03, 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #0: 0x00007fff921ebbca libsystem_kernel.dylib`__psynch_cvwait + 10
+    frame #1: 0x00007fff89f48274 libsystem_c.dylib`_pthread_cond_wait + 840
+    frame #2: 0x00000000168904ce beam.smp`wait__ + 195
+    frame #3: 0x00000000167afdab beam.smp`aux_thread + 343
+    frame #4: 0x0000000016890203 beam.smp`thr_wrapper + 111
+    frame #5: 0x00007fff89f448bf libsystem_c.dylib`_pthread_start + 335
+    frame #6: 0x00007fff89f47b75 libsystem_c.dylib`thread_start + 13
+(lldb) frame variable
+(lldb)