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mdbx: добавление UUID для идентификации БД.

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Леонид Юрьев (Leonid Yuriev)
2024-07-06 10:46:42 +03:00
parent 319753661a
commit fe31958d46
13 changed files with 246 additions and 72 deletions
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21
src/meta.c
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@@ -332,8 +332,8 @@ int meta_sync(const MDBX_env *env, const meta_ptr_t head) {
return rc;
}
__cold static page_t *meta_model(const MDBX_env *env, page_t *model,
size_t num) {
__cold static page_t *meta_model(const MDBX_env *env, page_t *model, size_t num,
const bin128_t *guid) {
ENSURE(env, is_powerof2(env->ps));
ENSURE(env, env->ps >= MDBX_MIN_PAGESIZE);
ENSURE(env, env->ps <= MDBX_MAX_PAGESIZE);
@@ -373,6 +373,7 @@ __cold static page_t *meta_model(const MDBX_env *env, page_t *model,
model_meta->trees.gc.flags = MDBX_INTEGERKEY;
model_meta->trees.gc.root = P_INVALID;
model_meta->trees.main.root = P_INVALID;
memcpy(&model_meta->dxbid, guid, sizeof(model_meta->dxbid));
meta_set_txnid(env, model_meta, MIN_TXNID + num);
unaligned_poke_u64(4, model_meta->sign, meta_sign_calculate(model_meta));
eASSERT(env, coherency_check_meta(env, model_meta, true));
@@ -380,10 +381,11 @@ __cold static page_t *meta_model(const MDBX_env *env, page_t *model,
}
__cold meta_t *meta_init_triplet(const MDBX_env *env, void *buffer) {
const bin128_t guid = osal_guid(env);
page_t *page0 = (page_t *)buffer;
page_t *page1 = meta_model(env, page0, 0);
page_t *page2 = meta_model(env, page1, 1);
meta_model(env, page2, 2);
page_t *page1 = meta_model(env, page0, 0, &guid);
page_t *page2 = meta_model(env, page1, 1, &guid);
meta_model(env, page2, 2, &guid);
return page_meta(page2);
}
@@ -394,7 +396,8 @@ __cold int __must_check_result meta_override(MDBX_env *env, size_t target,
if (unlikely(rc != MDBX_SUCCESS))
return rc;
page_t *const page = env->page_auxbuf;
meta_model(env, page, target);
meta_model(env, page, target,
&((target == 0 && shape) ? shape : METAPAGE(env, 0))->dxbid);
meta_t *const model = page_meta(page);
meta_set_txnid(env, model, txnid);
if (txnid)
@@ -430,6 +433,12 @@ __cold int __must_check_result meta_override(MDBX_env *env, size_t target,
}
}
}
if (target == 0 && (model->dxbid.x | model->dxbid.y) == 0) {
const bin128_t guid = osal_guid(env);
memcpy(&model->dxbid, &guid, sizeof(model->dxbid));
}
meta_sign_as_steady(model);
rc = meta_validate(env, model, page, (pgno_t)target, nullptr);
if (unlikely(MDBX_IS_ERROR(rc)))