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authorEduardo Chappa <chappa@washington.edu>2020-02-06 07:31:41 -0700
committerEduardo Chappa <chappa@washington.edu>2020-02-06 07:31:41 -0700
commit2eb52cbfe33171eda83b69d9df36cee0ff834f33 (patch)
tree7a6409b650961475ede1484f47274508cce2082f /pico/osdep/mswin.c
parentdba6c62a11eed30f7a4e3e625eec8ca88252ab6c (diff)
downloadalpine-2eb52cbfe33171eda83b69d9df36cee0ff834f33.tar.xz
* Fix a bug in PC-Alpine that made Alpine go into an infinte loop and
consume CPU when it was iconized. Reported by Holger Schieferdecker in comp.mail.pine.
Diffstat (limited to 'pico/osdep/mswin.c')
-rw-r--r--pico/osdep/mswin.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/pico/osdep/mswin.c b/pico/osdep/mswin.c
index 76d358ba..824ccd4c 100644
--- a/pico/osdep/mswin.c
+++ b/pico/osdep/mswin.c
@@ -1992,8 +1992,14 @@ PaintTTY (HWND hWnd)
if (pTTYInfo == NULL)
return (FALSE);
- if (IsIconic (hWnd))
- return (TRUE);
+ // There used to be an instruction to return when we were iconized:
+ // if (IsIconic (hWnd))
+ // return (TRUE);
+ // We remove this, because when Windows wants to update the screen
+ // and Alpine returns because the screen is iconized,, neither Windows
+ // nor Alpine will stop their vicious infinite cycle: Windows trying to
+ // force the update and Alpine avoiding it. We better yield because
+ // otherwise we will end up with a high consumption of CPU.
hDC = BeginPaint (hWnd, &ps);
rect = ps.rcPaint;
@@ -6736,6 +6742,7 @@ mswin_caninput (void)
int
mswin_charavail (void)
{
+ DWORD start;
MSG msg;
BOOL ca, pa, ma;
@@ -6788,6 +6795,7 @@ mswin_charavail (void)
UCS
mswin_getc (void)
{
+ DWORD start;
BOOL ca, pa, ma;
MSG msg;