- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: mktime and getenv(3) hang in signal handler
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
01-31-2012 12:04 AM
01-31-2012 12:04 AM
Our system is running on HPUX11.31
We have some processes that are running forever and very very rarely one is hanging without apparent reason.
As these process is running on live system it's quite difficult to investiguate : maintenance people just kill then restart the process that is working fine for a long while until the next occurence.
Yet, recently we had the problem on our integration platform : one developper got the call stack when the process hangs (but it's only a JPG file)
The call stack is :
#0 0xc000000000432750:0 in __ksleep
#1 0xc0000000001c51c0:0 in __mnx_sleep
#2 0xc00000000013fce0:0 in __pthread_mutex_lock??
#3 0xc00000000013dc90:0 in __pthread_mutex_lock??
#4 0xc00000000013da20:0 in pthread_mutex_lock??
#5 0xc000000000453e50:0 in __pthread_mutex_lock??
#6 0xc0000000003252a0:0 in getenv+0xfa0 ()
#7 0xc000000000320a90:0 in tzset+0x110 ()
#8 0xc00000000031d550:0 in localtime_r+0x120 ()
#9 0xc00000000031d210:0 in localtime+0x30 ()
#10 0x400000000004a630:0 in fg_cur_date_asc ()
#11 0x4000000000014f30:0 in fl_alarm_rcv_timer_signal ()
#12 <signal handler called>
#13 0xc00000000013db20:0 in __pthread_mutex_lock_ng+0xe0 ()
#14 0xc00000000013da20:0 in pthread_mutex_lock+0x20 ()
#15 0xc000000000453e50:0 in __pthread_mutex_lock+0xb0 ()
#16 0xc0000000003252a0:0 in getenv+0xfa0 ()
#17 0xc000000000320a90:0 in tzset+0x110 ()
#18 0xc000000000328810:0 in mktime+0x150 ()
#19 0x400000000004d2d0:0 in fg_dasc_to_dsec ()
#20 0x4000000000017c70:0 in fl_alarm_fault ()
Has anyone already observed this hang ?
Please advice,
Bruno
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
01-31-2012 12:49 AM - edited 01-31-2012 12:53 AM
01-31-2012 12:49 AM - edited 01-31-2012 12:53 AM
SolutionYour application is likely to be illegal and you gambled and lost. ;-)
You can't call mktime(3) or localtime(3) in a signal handler. I.e. it isn't async signal safe. See thread_safety(5)
You might be able to call gmtime(3)?