Mailing-List:	contact cygwin-developers-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-developers-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin-developers/>
List-Post:	<mailto:cygwin-developers AT cygwin DOT com>
List-Help:	<mailto:cygwin-developers-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-developers-owner AT cygwin DOT com
Delivered-To:	mailing list cygwin-developers AT cygwin DOT com
Date:	Thu, 5 Sep 2002 11:33:20 -0400
From:	Christopher Faylor <cgf AT redhat DOT com>
To:	cygwin-developers AT cygwin DOT com
Subject:	Re: hang in sig_wait waiting for debug lock
Message-ID:	<20020905153320.GC16827@redhat.com>
Reply-To:	cygwin-developers AT cygwin DOT com
Mail-Followup-To:	cygwin-developers AT cygwin DOT com
References:	<7710998905 DOT 20020828173811 AT logos-m DOT ru>
Mime-Version:	1.0
In-Reply-To:	<7710998905.20020828173811@logos-m.ru>
User-Agent:	Mutt/1.3.23.1i

Any word on this?  Have you determined which thread has the lock?
It should be easy to do by looking at the muto structure.

cgf

On Wed, Aug 28, 2002 at 05:38:11PM +0400, egor duda wrote:
>Hi!
>
>  Running gcc's testsuite with cygwin1.dll from latest cvs i get the following strace:
>
>[...]
>**********************************************
>Program name: e:\unix\bin\sh.exe (376)
>App version:  1003.3, api: 0.46
>DLL version:  1003.13, api: 0.62
>DLL build:    2002-08-28 17:24
>OS version:   Windows NT-4.0
>Date/Time:    2002-08-28 17:25:52
>**********************************************
>  109    4291 [unknown (0x179)] sh 376 fhandler_base::fixup_after_fork: inheriting '/dev/tty1' from parent
>   83    4374 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xBC already opened
>   72    4446 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xD4 already opened
>   78    4524 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xAC already opened
>   75    4599 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xA0 already opened
>   72    4671 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xB4 already opened
>   72    4743 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xB0 already opened
>   82    4825 [unknown (0x179)] sh 376 fhandler_base::fixup_after_fork: inheriting '/dev/tty1' from parent
>   77    4902 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x134 already opened
>   72    4974 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x13C already opened
>   73    5047 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x160 already opened
>   73    5120 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0xC already opened
>   72    5192 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x104 already opened
>   73    5265 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x138 already opened
>   70    5335 [unknown (0x179)] sh 376 fhandler_base::fixup_after_fork: inheriting '/dev/tty1' from parent
>   68    5403 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x140 already opened
>   68    5471 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x1C8 already opened
>   67    5538 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x14C already opened
>   69    5607 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x164 already opened
>   67    5674 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x144 already opened
>   67    5741 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x168 already opened
>   69    5810 [unknown (0x179)] sh 376 fhandler_base::fixup_after_fork: inheriting '/dev/tty0' from parent
>   68    5878 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x64 already opened
>   68    5946 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x6C already opened
>   66    6012 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x28 already opened
>   70    6082 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x38 already opened
>   69    6151 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x34 already opened
>   67    6218 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x44 already opened
>   67    6285 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x4C already opened
>   67    6352 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x48 already opened
>   68    6420 [unknown (0x179)] sh 376 fhandler_base::fork_fixup: handle 0x70 already opened
>  131    6551 [unknown (0x179)] sh 376 open_shared: name shared, shared 0xA000000 (wanted 0xA000000), h 0x54
> 1808    8359 [unknown (0x179)] sh 376 add_handle: void memory_init():147 54(cygheap->shared_h)
>  187    8546 [unknown (0x179)] sh 376 heap_init: heap base 0xA010000, heap top 0xA010000
>  282    8828 [unknown (0x179)] sh 376 open_shared: name duda, shared 0x1A010000 (wanted 0x0), h 0x78
>   78    8906 [unknown (0x179)] sh 376 memory_init: opening mount table for 'duda' at 0xA010000
>   76    8982 [unknown (0x179)] sh 376 add_handle: void memory_init():155 78(cygwin_mount_h)
>   80    9062 [unknown (0x179)] sh 376 memory_init: mount table version 31DF at 0x1A010000
>  185    9247 [main] sh 376 add_handle: void dll_crt0_1():661 16C(hMainProc)
>   85    9332 [main] sh 376 add_handle: protecting handle 'hMainProc', inherited flag 0
>   71    9403 [main] sh 376 add_handle: void dll_crt0_1():662 174(hMainThread)
>   71    9474 [main] sh 376 add_handle: protecting handle 'hMainThread', inherited flag 0
>  138    9612 [main] sh 376 add_handle: void events_init():1118 1B4(title_mutex)
>   81    9693 [main] sh 376 add_handle: protecting handle 'title_mutex', inherited flag 0
>   90    9783 [main] sh 376 events_init: windows_system_directory 'D:\WINNT40\System32\', windows_system_directory_length 20
>   77    9860 [main] sh 376 events_init: cygwin_hmodule 0x61000000
>  912   10772 [main] sh 376 parse_options: ntsec 1
>  153   10925 [main] sh 376 parse_options: ntea 0
>  138   11063 [main] sh 376 parse_options: binmode 65536
>  138   11201 [main] sh 376 parse_options: glob (called func)
>  135   11336 [main] sh 376 parse_options: tty 1801
>  142   11478 [main] sh 376 parse_options: error_start (called func)
>  132   11610 [main] sh 376 set_file_api_mode: File APIs set to OEM
>   65   11675 [main] sh 376 parse_options: codepage (called func)
>  127   11802 [main] sh 376 parse_options: winsymlinks 0
>  388   12190 [main] sh 376 parse_options: returning
>   73   12263 [main] sh 376 pinfo_init: pid 376, pgid 294
>  147   12410 [main] sh 376 add_handle: void sigproc_init():563 210(wait_sig_inited)
>  190   12600 [main] sh 376 add_handle: protecting handle 'wait_sig_inited', inherited flag 0
>   89   12689 [main] sh 376 add_handle: void sigproc_init():568 214(signal_arrived)
>   76   12765 [main] sh 376 add_handle: protecting handle 'signal_arrived', inherited flag 0
>  921   13686 [main] sh 376 sigproc_init: process/signal handling enabled(1881)
>  325   14011 [main] sh 376 transport_layer_pipes::connect: Error opening the pipe (2)
>  224   14235 [main] sh 376 dll_crt0_1: user_data->main 0x408494
>  272   14507 [sig] sh 376 wait_sig: sigcatch_nonmain 0x248, sigcatch_main 0x24C
>   71   14742 [sig] sh 376 add_handle: DWORD wait_sig(void*):1065 244(sigcatch_nosync)
>
>Here add_handle() blocks trying to acquire debug lock. I've added a
>debug_printf just at start of add_handle, before call to lock
>constructor. I'm trying to look deeper into this, but wanted to give a
>heads-up.
>
>egor.            mailto:deo AT logos-m DOT ru icq 5165414 fidonet 2:5020/496.19

- Raw text -