FilesExpand file tree

 master

/

function-graph-fold.vim

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

42 lines (39 loc) · 1.32 KB

 master

/

function-graph-fold.vim

Copy path

Top

File metadata and controls

• Code
• Blame

42 lines (39 loc) · 1.32 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

" Enable folding for ftrace function_graph traces.

"

" To use, :source this file while viewing a function_graph trace, or use vim's

" -S option to load from the command-line together with a trace. You can then

" use the usual vim fold commands, such as "za", to open and close nested

" functions. While closed, a fold will show the total time taken for a call,

" as would normally appear on the line with the closing brace. Folded

" functions will not include finish_task_switch(), so folding should remain

" relatively sane even through a context switch.

"

" Note that this will almost certainly only work well with a

" single-CPU trace (e.g. trace-cmd report --cpu 1).

function! FunctionGraphFoldExpr(lnum)

let line = getline(a:lnum)

if line[-1:] == '{'

if line =~ 'finish_task_switch() {$'

return '>1'

endif

return 'a1'

elseif line[-1:] == '}'

return 's1'

else

return '='

endif

endfunction

function! FunctionGraphFoldText()

let s = split(getline(v:foldstart), '|', 1)

if getline(v:foldend+1) =~ 'finish_task_switch() {$'

let s[2] = ' task switch '

else

let e = split(getline(v:foldend), '|', 1)

let s[2] = e[2]

endif

return join(s, '|')

endfunction

setlocal foldexpr=FunctionGraphFoldExpr(v:lnum)

setlocal foldtext=FunctionGraphFoldText()

setlocal foldcolumn=12

setlocal foldmethod=expr