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Cygwin: console: Fix deadlock at calling fork().

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- Calling fork() on console occasionally falls into deadlock. The reason
  is not clear, however, this patch fixes this problem anyway.
This commit is contained in:
Takashi Yano 2019-08-12 22:46:23 +09:00 committed by Corinna Vinschen
parent 744b90c996
commit 92e2c1ad9d
1 changed files with 6 additions and 2 deletions
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8
winsup/cygwin/fhandler_console.cc
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@ -168,8 +168,12 @@ fhandler_console::set_unit ()
if (created)
con.owner = getpid ();
}
if (!created && shared_console_info && kill (con.owner, 0) == -1)
con.owner = getpid ();
if (!created && shared_console_info)
{
pinfo p (con.owner);
if (!p)
con.owner = getpid ();
}
dev ().parse (devset);
if (devset != FH_ERROR)