Merge pull request #389 from jamessan/concurrency-limit

Defer VCS detection when too many jobs are running

Author: jamessan

autoload/sy.vim

@@ -10,6 +10,11 @@ function! sy#start(...) abort
     return
   endif
 
+  if g:signify_detecting > 50
+    call sy#verbose('Too many detection jobs running, deferring detection')
+    return
+  endif
+
   let bufnr = a:0 && has_key(a:1, 'bufnr') ? a:1.bufnr : bufnr('')
   let sy = getbufvar(bufnr, 'sy')
 

autoload/sy/repo.vim

@@ -7,6 +7,7 @@ function! sy#repo#detect(bufnr) abort
   let sy = getbufvar(a:bufnr, 'sy')
   for vcs in s:vcs_list
     let sy.detecting += 1
+    let g:signify_detecting += 1
     call sy#repo#get_diff(a:bufnr, vcs, function('sy#sign#set_signs'))
   endfor
 endfunction
@@ -130,6 +131,7 @@ function! s:handle_diff(options, exitval) abort
     call sy#verbose(printf('Signs already got updated by %s.', sy.updated_by), a:options.vcs)
     return
   elseif empty(sy.vcs)
+    let g:signify_detecting -= 1
     let sy.detecting -= 1
   endif
 

plugin/signify.vim

@@ -8,6 +8,7 @@ endif
 
 let g:loaded_signify = 1
 let g:signify_locked = 0
+let g:signify_detecting = 0
 
 " Commands {{{1
 command! -nargs=0 -bar       SignifyList            call sy#debug#list_active_buffers()