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Cygwin: pipe: Fix a regression that raw_write() slows down #227

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Sep 4, 2024
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Cygwin: pipe: Fix a regression that raw_write() slows down #227

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6 changes: 4 additions & 2 deletions winsup/cygwin/fhandler/pipe.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -503,15 +503,17 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len)
raise (SIGPIPE);
goto out;
}
else
cygwait (select_sem, 10, cw_cancel);
/* Break out on completion */
if (waitret == WAIT_OBJECT_0)
break;
/* If we got a timeout in the blocking case, and we already
did a short write, we got a signal in the previous loop. */
if (waitret == WAIT_TIMEOUT && short_write_once)
{
waitret = WAIT_SIGNALED;
break;
}
cygwait (select_sem, 10, cw_cancel);
}
/* Loop in case of blocking write or SA_RESTART */
while (waitret == WAIT_TIMEOUT || waitret == WAIT_SIGNALED);
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