Bug 118838
| Summary: | cannot send signals to threads waiting on (p)select | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Edward Pilipczuk <edward.pilipczuk> | ||||
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 1 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2004-03-25 20:38:00 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
Please write a short testcase which reproduces your problem. Created attachment 98857 [details] example of source code for bug#118838 illustration compilation by: $ g++ pkill.cpp -o pkill -lpthread I have shrink the code of my application to isolate the proble. Funny! This code works properly - see attachment. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031114 Description of problem: My multithread application works in the following scenario. global setting - set signal handler for SIGCONT (in fact it restores only signal service) thread#1 - blocks the SIGCONT signal by calling the pthread_sigmask function - listens on pselect on the set of IO channels enabling catching the SIGCONT signal thread#2 - sends SIGCONT (pthread_kill) to the thread #1 informing that set of IO channels change their status Result is that process disapear ! Does it mean that signal catching can be done only by sigwait call? Version-Release number of selected component (if applicable): glibc 2.3.2 build 101.4 How reproducible: Always Steps to Reproduce: As in description Actual Results: process diesapear Expected Results: Info, how to catch signals in thread waiting on select (pselect) Additional info: