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replay: rewrite async event handling

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This patch decouples checkpoints and async events.
It was a tricky part of replay implementation. Now it becomes
much simpler and easier to maintain.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <165364837856.688121.8785039478408995979.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2022-05-27 13:46:18 +03:00 • committed by Paolo Bonzini
parent 75bbe5e5ec
commit 60618e2d77
8 changed files with 54 additions and 76 deletions
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5
accel/tcg/tcg-accel-ops-icount.c
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@ -84,8 +84,7 @@ void icount_handle_deadline(void)
* Don't interrupt cpu thread, when these events are waiting
* (i.e., there is no checkpoint)
*/
if (deadline == 0
&& (replay_mode != REPLAY_MODE_PLAY || replay_has_checkpoint())) {
if (deadline == 0) {
icount_notify_aio_contexts();
}
}
@ -109,7 +108,7 @@ void icount_prepare_for_run(CPUState *cpu)
replay_mutex_lock();
if (cpu->icount_budget == 0 && replay_has_checkpoint()) {
if (cpu->icount_budget == 0) {
icount_notify_aio_contexts();
}
}