-
-
Notifications
You must be signed in to change notification settings - Fork 5.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
2 changed files
with
144 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,140 @@ | ||
" Tests for memory usage. | ||
|
||
if !has('terminal') || has('gui_running') | ||
finish | ||
endif | ||
|
||
source shared.vim | ||
|
||
func s:pick_nr(str) abort | ||
return substitute(a:str, '[^0-9]', '', 'g') * 1 | ||
endfunc | ||
|
||
if has('win32') | ||
if !executable('wmic') | ||
finish | ||
endif | ||
func s:memory_usage(pid) abort | ||
let cmd = printf('wmic process where processid=%d get WorkingSetSize', a:pid) | ||
return s:pick_nr(system(cmd)) / 1024 | ||
endfunc | ||
elseif has('unix') | ||
if !executable('ps') | ||
finish | ||
endif | ||
func s:memory_usage(pid) abort | ||
return s:pick_nr(system('ps -o rss= -p ' . a:pid)) | ||
endfunc | ||
endif | ||
|
||
" Wait for memory usage to level off. | ||
func s:monitor_memory_usage(pid) abort | ||
let proc = {} | ||
let proc.pid = a:pid | ||
let proc.hist = [] | ||
let proc.min = 0 | ||
let proc.max = 0 | ||
|
||
func proc.op() abort | ||
" Check the last 200ms. | ||
let val = s:memory_usage(self.pid) | ||
if self.min > val | ||
let self.min = val | ||
elseif self.max < val | ||
let self.max = val | ||
endif | ||
call add(self.hist, val) | ||
if len(self.hist) < 20 | ||
return 0 | ||
endif | ||
let sample = remove(self.hist, 0) | ||
return len(uniq([sample] + self.hist)) == 1 | ||
endfunc | ||
|
||
call WaitFor({-> proc.op()}, 10000) | ||
return {'last': get(proc.hist, -1), 'min': proc.min, 'max': proc.max} | ||
endfunc | ||
|
||
let s:term_vim = {} | ||
|
||
func s:term_vim.start(...) abort | ||
let self.buf = term_start([GetVimProg()] + a:000) | ||
let self.job = term_getjob(self.buf) | ||
call WaitFor({-> job_status(self.job) ==# 'run'}) | ||
let self.pid = job_info(self.job).process | ||
endfunc | ||
|
||
func s:term_vim.stop() abort | ||
call term_sendkeys(self.buf, ":qall!\<CR>") | ||
call WaitFor({-> job_status(self.job) ==# 'dead'}) | ||
exe self.buf . 'bwipe!' | ||
endfunc | ||
|
||
func s:vim_new() abort | ||
return copy(s:term_vim) | ||
endfunc | ||
|
||
func Test_memory_func_capture_vargs() | ||
" Case: if a local variable captures a:000, funccall object will be free | ||
" just after it finishes. | ||
let testfile = 'Xtest.vim' | ||
call writefile([ | ||
\ 'func s:f(...)', | ||
\ ' let x = a:000', | ||
\ 'endfunc', | ||
\ 'for _ in range(10000)', | ||
\ ' call s:f(0)', | ||
\ 'endfor', | ||
\ ], testfile) | ||
|
||
let vim = s:vim_new() | ||
call vim.start('--clean', '-c', 'set noswapfile', testfile) | ||
let before = s:monitor_memory_usage(vim.pid).last | ||
|
||
call term_sendkeys(vim.buf, ":so %\<CR>") | ||
call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) | ||
let after = s:monitor_memory_usage(vim.pid) | ||
|
||
" Estimate the limit of max usage as 2x initial usage. | ||
call assert_inrange(before, 2 * before, after.max) | ||
" In this case, garbase collecting is not needed. | ||
call assert_equal(after.last, after.max) | ||
|
||
call vim.stop() | ||
call delete(testfile) | ||
endfunc | ||
|
||
func Test_memory_func_capture_lvars() | ||
" Case: if a local variable captures l: dict, funccall object will not be | ||
" free until garbage collector runs, but after that memory usage doesn't | ||
" increase so much even when rerun Xtest.vim since system memory caches. | ||
let testfile = 'Xtest.vim' | ||
call writefile([ | ||
\ 'func s:f()', | ||
\ ' let x = l:', | ||
\ 'endfunc', | ||
\ 'for _ in range(10000)', | ||
\ ' call s:f()', | ||
\ 'endfor', | ||
\ ], testfile) | ||
|
||
let vim = s:vim_new() | ||
call vim.start('--clean', '-c', 'set noswapfile', testfile) | ||
let before = s:monitor_memory_usage(vim.pid).last | ||
|
||
call term_sendkeys(vim.buf, ":so %\<CR>") | ||
call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) | ||
let after = s:monitor_memory_usage(vim.pid) | ||
|
||
" Rerun Xtest.vim. | ||
for _ in range(3) | ||
call term_sendkeys(vim.buf, ":so %\<CR>") | ||
call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) | ||
let last = s:monitor_memory_usage(vim.pid).last | ||
endfor | ||
|
||
call assert_inrange(before, after.max + (after.last - before), last) | ||
|
||
call vim.stop() | ||
call delete(testfile) | ||
endfunc |