patch 8.2.5057: using gettimeofday() for timeout is very inefficient
Problem: Using gettimeofday() for timeout is very inefficient.
Solution: Set a platform dependent timer. (Paul Ollis, closes #10505)
diff --git a/src/testdir/test_syntax.vim b/src/testdir/test_syntax.vim
index be2f458..82d5cbb 100644
--- a/src/testdir/test_syntax.vim
+++ b/src/testdir/test_syntax.vim
@@ -527,6 +527,15 @@
CheckFunction reltimefloat
CheckFeature syntax
+ " So, it turns out the Windows 7 implements TimerQueue timers differently
+ " and they can expire *before* the requested time has elapsed. So allow for
+ " the timeout occurring after 80 ms (5 * 16 (the typical clock tick)).
+ if has("win32")
+ let min_timeout = 0.08
+ else
+ let min_timeout = 0.1
+ endif
+
" This pattern takes a long time to match, it should timeout.
new
call setline(1, ['aaa', repeat('abc ', 1000), 'ccc'])
@@ -535,7 +544,7 @@
syn match Error /\%#=1a*.*X\@<=b*/
redraw
let elapsed = reltimefloat(reltime(start))
- call assert_true(elapsed > 0.1)
+ call assert_true(elapsed > min_timeout)
call assert_true(elapsed < 1.0)
" second time syntax HL is disabled
@@ -549,7 +558,7 @@
exe "normal \<C-L>"
redraw
let elapsed = reltimefloat(reltime(start))
- call assert_true(elapsed > 0.1)
+ call assert_true(elapsed > min_timeout)
call assert_true(elapsed < 1.0)
set redrawtime&
@@ -642,7 +651,7 @@
\ "\tNote: asdf",
\ '}',
\ ], 'Xtest.c')
-
+
" This makes the default for 'background' use "dark", check that the
" response to t_RB corrects it to "light".
let $COLORFGBG = '15;0'