solo5: do not yield for expired deadlines
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@ -20,7 +20,7 @@ in stdenv.mkDerivation {
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enableParallelBuilding = true;
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enableParallelBuilding = true;
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patches = [ ./genode.patch ./elftool.patch ];
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patches = [ ./genode.patch ./elftool.patch ./time.patch ];
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configurePhase = ''
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configurePhase = ''
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runHook preConfigure
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runHook preConfigure
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@ -0,0 +1,60 @@
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commit a7902e24ba8fd2c6cfd56f68952f8d5417b9a303
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Author: Emery Hemingway <ehmry@posteo.net>
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Date: Sat May 16 02:07:54 2020 +0530
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Genode: do not yield for expired deadlines
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diff --git a/bindings/genode/bindings.cc b/bindings/genode/bindings.cc
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index 5785ae5..a4a4a34 100644
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--- a/bindings/genode/bindings.cc
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+++ b/bindings/genode/bindings.cc
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@@ -104,6 +104,12 @@ namespace Solo5
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return epoch;
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}
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+
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+ static Microseconds from_ns(solo5_time_t ns) {
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+ return Microseconds { ns / 1000ULL }; }
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+
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+ static solo5_time_t to_ns(Microseconds us) {
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+ return us.value * 1000ULL; }
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}
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@@ -431,20 +437,19 @@ struct Solo5::Platform
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_initial_epoch = rtc_epoch(env);
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return _initial_epoch * 1000000000ULL
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- + timer.curr_time().trunc_to_plain_us().value * 1000ULL;
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+ + to_ns(timer.curr_time().trunc_to_plain_us());
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}
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void
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yield(solo5_time_t deadline_ns, solo5_handle_set_t *ready_set)
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{
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if (!nic_ready) {
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- solo5_time_t deadline_us = deadline_ns / 1000;
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- solo5_time_t now_us = timer.curr_time()
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- .trunc_to_plain_us().value;
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+ Microseconds deadline = from_ns(deadline_ns);
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+ Microseconds now = timer.curr_time().trunc_to_plain_us();
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+ if (deadline.value <= now.value) return;
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// schedule a timeout signal
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- yield_timeout.schedule(
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- Genode::Microseconds{deadline_us - now_us});
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+ yield_timeout.schedule(Microseconds {deadline.value - now.value});
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/*
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* Block for Nic and Timer signals until a packet is
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@@ -531,8 +536,8 @@ void solo5_abort(void)
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solo5_time_t solo5_clock_monotonic(void)
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{
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- return Platform::instance->timer.curr_time()
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- .trunc_to_plain_us().value*1000;
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+ return Solo5::to_ns(Platform::instance->
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+ timer.curr_time().trunc_to_plain_us());
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}
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