| Summary: | SIGUSR2 file switching doesn't work with busy script | ||
|---|---|---|---|
| Product: | systemtap | Reporter: | Masami Hiramatsu <mhiramat> |
| Component: | runtime | Assignee: | Unassigned <systemtap> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Bug Depends on: | |||
| Bug Blocks: | 10907 | ||
| Attachments: | [PATCH] fix to check file switching flag inside read-write loop too. | ||
Created attachment 4443 [details]
[PATCH] fix to check file switching flag inside read-write loop too.
This patch adds a check of file switching flag inside inner loop.
Committed as 5cd2f82 |
stapio doesn't handle SIGUSR2 if running script dumps so much data. e.g. $ stap -d hoge -F -e 'probe kernel.function("sys_*") {print("hoge")}' $ killall -USR2 stapio <switching logs correctly> $ killall -USR2 stapio <doesn't switch log anymore> Because SIGUSR2 is checked only right after ppoll(), but not checked in read-write inner loop.