job: fix race between channel close and job exit

autoload/go/cmd.vim

@@ -446,7 +446,7 @@ function s:cmd_job(args) abort
 
   let start_options = {
         \ 'callback': callbacks.callback,
-        \ 'close_cb': callbacks.close_cb,
+        \ 'exit_cb': callbacks.exit_cb,
         \ }
 
   " modify GOPATH if needed

autoload/go/coverage.vim

@@ -288,7 +288,7 @@ function s:coverage_job(args)
 
   let start_options = {
         \ 'callback': callbacks.callback,
-        \ 'close_cb': callbacks.close_cb,
+        \ 'exit_cb': callbacks.exit_cb,
         \ }
 
   " modify GOPATH if needed

autoload/go/def.vim

@@ -303,7 +303,7 @@ function s:def_job(args) abort
 
   let start_options = {
         \ 'callback': callbacks.callback,
-        \ 'close_cb': callbacks.close_cb,
+        \ 'exit_cb': callbacks.exit_cb,
         \ }
 
   if &modified

autoload/go/guru.vim

@@ -155,21 +155,12 @@ function! s:async_guru(args) abort
     endif
   endif
 
-  function! s:close_cb(chan) closure
-    let messages = []
-    while ch_status(a:chan, {'part': 'out'}) == 'buffered'
-      let msg = ch_read(a:chan, {'part': 'out'})
-      call add(messages, msg)
-    endwhile
-
-    while ch_status(a:chan, {'part': 'err'}) == 'buffered'
-      let msg = ch_read(a:chan, {'part': 'err'})
-      call add(messages, msg)
-    endwhile
-
-    let l:job = ch_getjob(a:chan)
-    let l:info = job_info(l:job)
+  let messages = []
+  function! s:callback(chan, msg) closure
+    call add(messages, a:msg)
+  endfunction
 
+  function! s:exit_cb(job, exitval) closure
     let out = join(messages, "\n")
 
     let status = {
@@ -178,21 +169,22 @@ function! s:async_guru(args) abort
           \ 'state': "finished",
           \ }
 
-    if l:info.exitval
+    if a:exitval
       let status.state = "failed"
     endif
 
     call go#statusline#Update(status_dir, status)
 
     if has_key(a:args, 'custom_parse')
-      call a:args.custom_parse(l:info.exitval, out)
+      call a:args.custom_parse(a:exitval, out)
     else
-      call s:parse_guru_output(l:info.exitval, out, a:args.mode)
+      call s:parse_guru_output(a:exitval, out, a:args.mode)
     endif
   endfunction
 
   let start_options = {
-        \ 'close_cb': funcref("s:close_cb"),
+        \ 'callback': funcref("s:callback"),
+        \ 'exit_cb': funcref("s:exit_cb"),
         \ }
 
   if has_key(result, 'stdin_content')

autoload/go/job.vim

@@ -30,36 +30,25 @@ function go#job#Spawn(args)
     call add(self.messages, a:msg)
   endfunction
 
-  function cbs.close_cb(chan) dict
-    let l:job = ch_getjob(a:chan)
-    let l:status = job_status(l:job)
-
-    " the job might be in fail status, we assume by default it's failed.
-    " However if it's dead, we can use the real exitval
-    let exitval = 1
-    if l:status == "dead"
-      let l:info = job_info(l:job)
-      let exitval = l:info.exitval
-    endif
-
+  function cbs.exit_cb(job, exitval) dict
     if has_key(self, 'custom_cb')
-      call self.custom_cb(l:job, exitval, self.messages)
+      call self.custom_cb(a:job, a:exitval, self.messages)
     endif
 
     if has_key(self, 'error_info_cb')
-      call self.error_info_cb(l:job, exitval, self.messages)
+      call self.error_info_cb(a:job, a:exitval, self.messages)
     endif
 
     if get(g:, 'go_echo_command_info', 1)
-      if exitval == 0
+      if a:exitval == 0
         call go#util#EchoSuccess("SUCCESS")
       else
         call go#util#EchoError("FAILED")
       endif
     endif
 
     let l:listtype = go#list#Type("quickfix")
-    if exitval == 0
+    if a:exitval == 0
       call go#list#Clean(l:listtype)
       call go#list#Window(l:listtype)
       return
@@ -99,9 +88,9 @@ function go#job#Spawn(args)
     let cbs.callback = a:args.callback
   endif
 
-  " override close callback handler if user provided it
-  if has_key(a:args, 'close_cb')
-    let cbs.close_cb = a:args.close_cb
+  " override exit callback handler if user provided it
+  if has_key(a:args, 'exit_cb')
+    let cbs.exit_cb = a:args.exit_cb
   endif
 
   return cbs

autoload/go/lint.vim

@@ -252,23 +252,14 @@ function s:lint_job(args)
     copen
   endfunction
 
-  function! s:close_cb(chan) closure
-    let l:job = ch_getjob(a:chan)
-    let l:status = job_status(l:job)
-
-    let exitval = 1
-    if l:status == "dead"
-      let l:info = job_info(l:job)
-      let exitval = l:info.exitval
-    endif
-
+  function! s:exit_cb(job, exitval) closure
     let status = {
           \ 'desc': 'last status',
           \ 'type': "gometaliner",
           \ 'state': "finished",
           \ }
 
-    if exitval
+    if a:exitval
       let status.state = "failed"
     endif
 
@@ -297,7 +288,7 @@ function s:lint_job(args)
 
   let start_options = {
         \ 'callback': funcref("s:callback"),
-        \ 'close_cb': funcref("s:close_cb"),
+        \ 'exit_cb': funcref("s:exit_cb"),
         \ }
 
   call job_start(a:args.cmd, start_options)

autoload/go/rename.vim

@@ -71,28 +71,25 @@ function s:rename_job(args)
 
   let status_dir =  expand('%:p:h')
 
-  function! s:close_cb(chan) closure
-    let l:job = ch_getjob(a:chan)
-    let l:info = job_info(l:job)
-
+  function! s:exit_cb(job, exitval) closure
     let status = {
           \ 'desc': 'last status',
           \ 'type': "gorename",
           \ 'state': "finished",
           \ }
 
-    if l:info.exitval
+    if a:exitval
       let status.state = "failed"
     endif
 
     call go#statusline#Update(status_dir, status)
 
-    call s:parse_errors(l:info.exitval, a:args.bang, messages)
+    call s:parse_errors(a:exitval, a:args.bang, messages)
   endfunction
 
   let start_options = {
         \ 'callback': funcref("s:callback"),
-        \ 'close_cb': funcref("s:close_cb"),
+        \ 'exit_cb': funcref("s:exit_cb"),
         \ }
 
   " modify GOPATH if needed