Bram Moolenaar wrote：
> Patch 8.0.0105
> Problem: When using ch_read() with zero timeout, can't tell the difference
> between reading an empty line and nothing available.
> Solution: Add ch_canread().
> Files: src/evalfunc.c, src/channel.c, src/proto/channel.pro,
> src/testdir/test_channel.vim, src/testdir/shared.vim,
> runtime/doc/eval.txt, runtime/doc/channel.txt
This is fabulous, thanks for ch_canread()
However, a lot of messages are still dropped in spite of adding a sleep before
exiting:
-----------------------------
timerjob.vim
-----------------------------
function! MyTimer(id)
let ch = job_getchannel(g:job)
let st = ch_status(ch)
if st == "fail" || st == "closed"
return
endif
if ch_canread(ch)
let text = ch_read(ch, {'timeout':0})
caddexpr text
cbottom
endif
endfunc
" according to channel.txt, add a close callback
function! MyClose(channel)
caddexpr "[channel closed]"
cbottom
endfunc
copen 8
cexpr "[python output]"
wincmd k
let cmd = ['/usr/bin/python', 'timerjob.py']
let opt = {"out_io": "pipe", "err_io": "out", "close_cb": "MyClose"}
let job = job_start(cmd, opt)
let timer = timer_start(10, "MyTimer", {"repeat":-1})
-------------------------
timerjob.py
-------------------------
#! /usr/bin/env python2
import sys, time
for i in xrange(80000):
sys.stdout.write('timer job: this is line %d\n'%(i))
sys.stdout.flush()
# as channel.txt said, we need a sleep here
time.sleep(1)
-------------------------
output in quickfix
-------------------------
|| [python output]
|| timer job: this is line 0
|| timer job: this is line 1
|| timer job: this is line 2
|| timer job: this is line 3
|| timer job: this is line 4
|| timer job: this is line 5
.....
|| timer job: this is line 57
|| timer job: this is line 58
|| timer job: this is line 59
|| timer job: this is line 60
|| timer job: this is line 61
|| [channel closed]
Only 62 messages have been received, almost 80000 - 62 = 79938 messages have
been dropped.
I can sleep longer in timerjob.py, but I can't add a single sleep if I start
grep as a job. And I can't decide how long should I sleep to avoid dropping.
--
--
You received this message from the "vim_dev" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php
---
You received this message because you are subscribed to the Google Groups
"vim_dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
