7df3aa3083
add DirtyRateStatus to denote calculating status. Signed-off-by: Chuan Zheng <zhengchuan@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Message-Id: <1600237327-33618-3-git-send-email-zhengchuan@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> atomic name fixup
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Dirtyrate implement code
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*
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* Copyright (c) 2020 HUAWEI TECHNOLOGIES CO.,LTD.
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*
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* Authors:
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* Chuan Zheng <zhengchuan@huawei.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "cpu.h"
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#include "qemu/config-file.h"
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#include "exec/memory.h"
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#include "exec/ramblock.h"
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#include "exec/target_page.h"
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#include "qemu/rcu_queue.h"
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#include "qapi/qapi-commands-migration.h"
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#include "migration.h"
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#include "dirtyrate.h"
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static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED;
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static int dirtyrate_set_state(int *state, int old_state, int new_state)
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{
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assert(new_state < DIRTY_RATE_STATUS__MAX);
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if (qatomic_cmpxchg(state, old_state, new_state) == old_state) {
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return 0;
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} else {
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return -1;
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}
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}
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static void calculate_dirtyrate(struct DirtyRateConfig config)
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{
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/* todo */
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return;
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}
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void *get_dirtyrate_thread(void *arg)
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{
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struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg;
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int ret;
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ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_UNSTARTED,
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DIRTY_RATE_STATUS_MEASURING);
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if (ret == -1) {
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error_report("change dirtyrate state failed.");
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return NULL;
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}
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calculate_dirtyrate(config);
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ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_MEASURING,
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DIRTY_RATE_STATUS_MEASURED);
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if (ret == -1) {
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error_report("change dirtyrate state failed.");
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}
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return NULL;
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}
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