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cpus: re-factor out handle_icount_deadline

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In preparation for adding a MTTCG thread we re-factor out a bit of what
will be common code to handle the QEMU_CLOCK_VIRTUAL expiration.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20161027151030.20863-18-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alex Bennée 2016-10-27 16:10:14 +01:00 committed by Paolo Bonzini
parent c93bbbefca
commit 12e9700d7a
1 changed files with 13 additions and 6 deletions
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19
cpus.c
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@ -1076,6 +1076,18 @@ static int64_t tcg_get_icount_limit(void)
}
}
static void handle_icount_deadline(void)
{
if (use_icount) {
int64_t deadline =
qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
if (deadline == 0) {
qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
}
}
}
static int tcg_cpu_exec(CPUState *cpu)
{
int ret;
@ -1198,13 +1210,8 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
/* Pairs with smp_wmb in qemu_cpu_kick. */
atomic_mb_set(&exit_request, 0);
if (use_icount) {
int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
handle_icount_deadline();
if (deadline == 0) {
qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
}
}
qemu_tcg_wait_io_event(QTAILQ_FIRST(&cpus));
deal_with_unplugged_cpus();
}