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Created on 2017-05-02 12:17 by vstinner, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 1386 | closed | vstinner, 2017-05-02 13:02 | |
| Messages (3) | |||
|---|---|---|---|
| msg292749 - (view) | Author: STINNER Victor (vstinner) *  |
Date: 2017-05-02 12:17 | |
Given the following snippet:
with open("x", "w+", encoding="utf-8") as fp:
pass
Creating the TextIOWrapper object requires many syscall: see the issue #30228.
But I also noticed that *closing* such object also requires multiple lseek() syscalls, whereas the snippet doesn't read nor write anything.
Attached PR avoids lseek() if read and write buffers are empty.
|
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| msg292930 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2017-05-03 17:55 | |
READAHEAD uses read_end, RAW_OFFSET uses raw_pos. Are you sure that if READAHEAD(self) is zero RAW_OFFSET(self) is zero too? |
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| msg300145 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2017-08-11 00:09 | |
I closed my PR, so I also close this issue. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:45 | admin | set | github: 74415 |
| 2017-08-11 00:09:08 | vstinner | set | status: open -> closed resolution: rejected messages: + msg300145 stage: resolved |
| 2017-05-03 17:55:48 | serhiy.storchaka | set | messages: + msg292930 |
| 2017-05-02 13:02:52 | vstinner | set | pull_requests: + pull_request1493 |
| 2017-05-02 12:17:53 | vstinner | create | |