ogg123 doesn't quit - version 1.2.0

[jpschewe@…]

This appears to be the same problem as ticket:5024. I just upgraded to Snow Leopard and reinstalled all of my ports "port uninstall installed; port install <those I care about>".

When ogg123 finishes a file, it doesn't exit, nor can I kill it will ctrl-c or kill -15, I need to use kill -9. Ctrl-z doesn't suspend it either. I suspect there's a deadlock in the signal handler.

Here is the inspection trace from activitity monitor: Sampling process 26021 for 3 seconds with 1 millisecond of run time between samples Sampling completed, processing symbols... Analysis of sampling ogg123 (pid 26021) every 1 millisecond Call graph:

2494 Thread_1327455 DispatchQueue_1: com.apple.main-thread (serial)

2494 start

2494 main

2494 exit

2494 cxa_finalize

2494 ao_onexit

2494 close_audio_devices

2494 ao_close

2494 ao_plugin_close

2494 _pthread_cond_wait

2494 semwait_signal

2494 Thread_1327461 DispatchQueue_2: com.apple.libdispatch-manager (serial)

2494 start_wqthread

2494 _pthread_wqthread

2494 _dispatch_worker_thread2

2494 _dispatch_queue_invoke

2494 _dispatch_mgr_invoke

2494 kevent

Total number in stack (recursive counted multiple, when >=5):

Sort by top of stack, same collapsed (when >= 5):

semwait_signal 2494 kevent 2494

Sample analysis of process 26021 written to file /dev/stdout

Here is the trace from gdb: Undefined command: "thread-list". Try "help". (gdb) info threads

2 port# 0x2a03 0x00007fff8437fb16 in kevent ()

• 1 port# 0x903 0x00007fff843a19c6 in semwait_signal ()

(gdb) bt #0 0x00007fff843a19c6 in semwait_signal () #1 0x00007fff843a5801 in _pthread_cond_wait () #2 0x00000001003c514b in ao_plugin_close () #3 0x00000001000618d9 in ao_close () #4 0x000000010000110e in close_audio_devices () #5 0x0000000100001141 in ao_onexit () #6 0x00007fff8437927f in cxa_finalize () #7 0x00007fff8437918c in exit () #8 0x0000000100005e35 in main () (gdb) thread 2 [Switching to thread 2 (process 26021)] 0x00007fff8437fb16 in kevent () (gdb) bt #0 0x00007fff8437fb16 in kevent () #1 0x00007fff84381a19 in _dispatch_mgr_invoke () #2 0x00007fff843816d6 in _dispatch_queue_invoke () #3 0x00007fff843811f6 in _dispatch_worker_thread2 () #4 0x00007fff84380b28 in _pthread_wqthread () #5 0x00007fff843809c5 in start_wqthread ()

I've also noticed that when xemacs execs a process xemacs locks up. Perhaps there is is a common problem between the two and how threads are handled in Snow Leopard.