File: openFile008.hs

package info (click to toggle)
ghc 8.0.1-17
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 55,080 kB
  • ctags: 9,332
  • sloc: haskell: 363,120; ansic: 54,900; sh: 4,782; makefile: 974; perl: 542; asm: 315; python: 306; xml: 154; lisp: 7
file content (22 lines) | stat: -rw-r--r-- 585 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
import System.IO
import System.Cmd
import System.FilePath
import Text.Printf
import System.Directory
import Control.Monad

testdir = "openFile008_testdir"

-- Test repeated opening/closing of 1000 files.  This is useful for guaging
-- the performance of open/close and file locking.
main = do
  system ("rm -rf " ++ testdir)
  createDirectory testdir
  let filenames = [testdir </> printf "file%03d" (n::Int) | n <- [1..1000]]

  forM_ [1..50] $ \_ -> do
    hs <- mapM (\f -> openFile f WriteMode) filenames
    mapM_ hClose hs

  mapM_ removeFile filenames
  removeDirectory testdir