72d10a9421
This new function allows to look for a consecutively dirty area in a dirty bitmap. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20180613181823.13618-10-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
106 lines
6.0 KiB
C
106 lines
6.0 KiB
C
#ifndef BLOCK_DIRTY_BITMAP_H
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#define BLOCK_DIRTY_BITMAP_H
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#include "qemu-common.h"
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#include "qapi/qapi-types-block-core.h"
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#include "qemu/hbitmap.h"
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BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
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uint32_t granularity,
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const char *name,
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Error **errp);
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void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap,
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int chunk_size);
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void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap);
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int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
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BdrvDirtyBitmap *bitmap,
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Error **errp);
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BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs,
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BdrvDirtyBitmap *bitmap,
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Error **errp);
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BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs,
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BdrvDirtyBitmap *bitmap,
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Error **errp);
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void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap);
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BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs,
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const char *name);
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void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
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void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs);
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void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs);
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void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
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const char *name,
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Error **errp);
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void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
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void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
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BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
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uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
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uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);
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bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap);
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bool bdrv_dirty_bitmap_frozen(BdrvDirtyBitmap *bitmap);
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const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap);
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int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap *bitmap);
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DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap);
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void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap,
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int64_t offset, int64_t bytes);
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void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap,
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int64_t offset, int64_t bytes);
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BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap);
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BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap);
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void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter);
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uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap,
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uint64_t offset, uint64_t bytes);
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uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap);
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void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap,
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uint8_t *buf, uint64_t offset,
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uint64_t bytes);
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void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap,
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uint8_t *buf, uint64_t offset,
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uint64_t bytes, bool finish);
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void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap,
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uint64_t offset, uint64_t bytes,
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bool finish);
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void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap,
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uint64_t offset, uint64_t bytes,
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bool finish);
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void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap);
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void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value);
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void bdrv_dirty_bitmap_set_persistance(BdrvDirtyBitmap *bitmap,
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bool persistent);
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void bdrv_dirty_bitmap_set_qmp_locked(BdrvDirtyBitmap *bitmap, bool qmp_locked);
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void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src,
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Error **errp);
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/* Functions that require manual locking. */
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void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap);
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void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap);
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bool bdrv_get_dirty_locked(BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
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int64_t offset);
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void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
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int64_t offset, int64_t bytes);
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void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap,
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int64_t offset, int64_t bytes);
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int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter);
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bool bdrv_dirty_iter_next_area(BdrvDirtyBitmapIter *iter, uint64_t max_offset,
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uint64_t *offset, int *bytes);
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void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset);
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int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap);
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int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap);
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void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes);
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bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap);
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bool bdrv_has_readonly_bitmaps(BlockDriverState *bs);
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bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap);
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bool bdrv_dirty_bitmap_get_persistance(BdrvDirtyBitmap *bitmap);
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bool bdrv_dirty_bitmap_qmp_locked(BdrvDirtyBitmap *bitmap);
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bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs);
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BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs,
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BdrvDirtyBitmap *bitmap);
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char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp);
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int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t start);
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BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs,
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BdrvDirtyBitmap *bitmap,
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Error **errp);
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#endif
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