0498770c0e
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
94 lines
2.7 KiB
Diff
94 lines
2.7 KiB
Diff
From 466b3eee340f022e53478e706e8d4dc02136b1e1 Mon Sep 17 00:00:00 2001
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From: Chuan Zheng <zhengchuan@huawei.com>
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Date: Wed, 16 Sep 2020 14:21:57 +0800
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Subject: [PATCH] migration/dirtyrate: add DirtyRateStatus to denote
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calculation status
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add DirtyRateStatus to denote calculating status.
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Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
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Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Reviewed-by: Li Qiang <liq3ea@gmail.com>
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Message-Id: <1600237327-33618-3-git-send-email-zhengchuan@huawei.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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atomic name fixup
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---
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migration/dirtyrate.c | 26 ++++++++++++++++++++++++++
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qapi/migration.json | 17 +++++++++++++++++
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2 files changed, 43 insertions(+)
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diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
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index 29ef663acb..44a60bf10d 100644
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--- a/migration/dirtyrate.c
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+++ b/migration/dirtyrate.c
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@@ -22,6 +22,19 @@
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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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+
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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 (atomic_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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+
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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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@@ -31,8 +44,21 @@ static void calculate_dirtyrate(struct DirtyRateConfig config)
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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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+
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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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diff --git a/qapi/migration.json b/qapi/migration.json
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index 9cfbaf8c6c..fdddde0af7 100644
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--- a/qapi/migration.json
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+++ b/qapi/migration.json
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@@ -1445,3 +1445,20 @@
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# Since: 3.0
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##
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{ 'command': 'migrate-pause', 'allow-oob': true }
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+
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+##
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+# @DirtyRateStatus:
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+#
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+# An enumeration of dirtyrate status.
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+#
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+# @unstarted: the dirtyrate thread has not been started.
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+#
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+# @measuring: the dirtyrate thread is measuring.
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+#
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+# @measured: the dirtyrate thread has measured and results are available.
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+#
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+# Since: 5.2
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+#
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+##
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+{ 'enum': 'DirtyRateStatus',
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+ 'data': [ 'unstarted', 'measuring', 'measured'] }
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--
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2.27.0
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