Feature #4528 ยป 0001-ext-io-nonblock-avoid-unnecessary-fcntl-F_SETFL-call.patch
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static void
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io_nonblock_set(int fd, int f, int nb)
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{
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if (nb)
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if (nb) {
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if ((f & O_NONBLOCK) != 0)
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return;
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f |= O_NONBLOCK;
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else
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}
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else {
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if ((f & O_NONBLOCK) == 0)
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return;
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f &= ~O_NONBLOCK;
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}
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if (fcntl(fd, F_SETFL, f) == -1)
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rb_sys_fail(0);
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}
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