35 lines
969 B
Text
35 lines
969 B
Text
$NetBSD: patch-ab,v 1.2 2007/08/04 12:52:57 joerg Exp $
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--- fifo.cpp.orig 2007-07-16 17:54:23.000000000 +0000
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+++ fifo.cpp
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@@ -39,6 +39,12 @@
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#include "wave.h"
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#include "debug.h"
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+#ifndef timespeccmp
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+#define timespeccmp(tvp, uvp, cmp) \
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+ (((tvp)->tv_sec == (uvp)->tv_sec) ? \
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+ ((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
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+ ((tvp)->tv_sec cmp (uvp)->tv_sec))
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+#endif
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//>
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//<decls and function prototypes
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@@ -306,10 +312,14 @@ int sleep_until_start_request_or_inactiv
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to.tv_sec, to.tv_nsec,
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ts.tv_sec, ts.tv_nsec);
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- while ((err = sem_timedwait(&my_sem_start_is_required, &ts)) == -1
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- && errno == EINTR)
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+ while ((err = sem_trywait(&my_sem_start_is_required)) == -1
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+ && (errno == EINTR || errno == EAGAIN))
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{
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- continue;
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+ struct timespec help;
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+ clock_gettime2(&help);
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+ if (timespeccmp(&help, &ts, >=))
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+ break;
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+ sched_yield();
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}
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assert (gettimeofday(&tv, NULL) != -1);
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