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| author | Chuan Zheng <zhengchuan@huawei.com> | 2020-09-16 14:21:57 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-09-25 12:45:57 +0100 |
| commit | 7df3aa30838c010ce9b2f587afdcd6609386f630 (patch) | |
| tree | a874150d0cd46b48ef80c06061caac11283bd52b | |
| parent | 4240dceeb3362d7589faf2ea88235ca91ae447e4 (diff) | |
| download | qemu-7df3aa30838c010ce9b2f587afdcd6609386f630.zip qemu-7df3aa30838c010ce9b2f587afdcd6609386f630.tar.gz qemu-7df3aa30838c010ce9b2f587afdcd6609386f630.tar.bz2 | |
migration/dirtyrate: add DirtyRateStatus to denote calculation status
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
| -rw-r--r-- | migration/dirtyrate.c | 26 | ||||
| -rw-r--r-- | qapi/migration.json | 17 |
2 files changed, 43 insertions, 0 deletions
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index bf7fd24..3edf000 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -22,6 +22,19 @@ #include "migration.h" #include "dirtyrate.h" +static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED; + +static int dirtyrate_set_state(int *state, int old_state, int new_state) +{ + assert(new_state < DIRTY_RATE_STATUS__MAX); + if (qatomic_cmpxchg(state, old_state, new_state) == old_state) { + return 0; + } else { + return -1; + } +} + + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */ @@ -31,8 +44,21 @@ static void calculate_dirtyrate(struct DirtyRateConfig config) void *get_dirtyrate_thread(void *arg) { struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg; + int ret; + + ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_UNSTARTED, + DIRTY_RATE_STATUS_MEASURING); + if (ret == -1) { + error_report("change dirtyrate state failed."); + return NULL; + } calculate_dirtyrate(config); + ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_MEASURING, + DIRTY_RATE_STATUS_MEASURED); + if (ret == -1) { + error_report("change dirtyrate state failed."); + } return NULL; } diff --git a/qapi/migration.json b/qapi/migration.json index 675f70b..76a59b4 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1720,3 +1720,20 @@ ## { 'event': 'UNPLUG_PRIMARY', 'data': { 'device-id': 'str' } } + +## +# @DirtyRateStatus: +# +# An enumeration of dirtyrate status. +# +# @unstarted: the dirtyrate thread has not been started. +# +# @measuring: the dirtyrate thread is measuring. +# +# @measured: the dirtyrate thread has measured and results are available. +# +# Since: 5.2 +# +## +{ 'enum': 'DirtyRateStatus', + 'data': [ 'unstarted', 'measuring', 'measured'] } |