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mdbx: доработка env_info_snap().

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev) 2023-10-11 23:05:50 +03:00
parent 224f26813e
commit a67b9b9729
1 changed files with 25 additions and 27 deletions
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52
src/core.c
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@ -22260,6 +22260,8 @@ __cold static int env_info_snap(const MDBX_env *env, const MDBX_txn *txn,
meta_troika_t *const troika) {
const size_t size_before_bootid = offsetof(MDBX_envinfo, mi_bootid);
const size_t size_before_pgop_stat = offsetof(MDBX_envinfo, mi_pgop_stat);
if (unlikely(env->me_flags & MDBX_FATAL_ERROR))
return MDBX_PANIC;
/* is the environment open?
* (https://libmdbx.dqdkfa.ru/dead-github/issues/171) */
@ -22287,18 +22289,12 @@ __cold static int env_info_snap(const MDBX_env *env, const MDBX_txn *txn,
#endif
}
*troika = (txn && !(txn->mt_flags & MDBX_TXN_RDONLY)) ? txn->tw.troika
: meta_tap(env);
const meta_ptr_t head = meta_recent(env, troika);
const MDBX_meta *const meta0 = METAPAGE(env, 0);
const MDBX_meta *const meta1 = METAPAGE(env, 1);
const MDBX_meta *const meta2 = METAPAGE(env, 2);
if (unlikely(env->me_flags & MDBX_FATAL_ERROR))
return MDBX_PANIC;
if (txn && !(txn->mt_flags & MDBX_TXN_RDONLY))
*troika = txn->tw.troika;
else
*troika = meta_tap(env);
const meta_ptr_t head = meta_recent(env, troika);
out->mi_recent_txnid = head.txnid;
out->mi_meta_txnid[0] = troika->txnid[0];
out->mi_meta_sign[0] = unaligned_peek_u64(4, meta0->mm_sign);
@ -22330,11 +22326,6 @@ __cold static int env_info_snap(const MDBX_env *env, const MDBX_txn *txn,
out->mi_geo.upper = pgno2bytes(env, txn_meta->mm_geo.upper);
out->mi_geo.shrink = pgno2bytes(env, pv2pages(txn_meta->mm_geo.shrink_pv));
out->mi_geo.grow = pgno2bytes(env, pv2pages(txn_meta->mm_geo.grow_pv));
const uint64_t unsynced_pages =
atomic_load64(&env->me_lck->mti_unsynced_pages, mo_Relaxed) +
(atomic_load32(&env->me_lck->mti_meta_sync_txnid, mo_Relaxed) !=
(uint32_t)out->mi_recent_txnid);
out->mi_mapsize = env->me_dxb_mmap.limit;
const MDBX_lockinfo *const lck = env->me_lck;
@ -22346,6 +22337,10 @@ __cold static int env_info_snap(const MDBX_env *env, const MDBX_txn *txn,
out->mi_sys_pagesize = env->me_os_psize;
if (likely(bytes > size_before_bootid)) {
const uint64_t unsynced_pages =
atomic_load64(&lck->mti_unsynced_pages, mo_Relaxed) +
((uint32_t)out->mi_recent_txnid !=
atomic_load32(&lck->mti_meta_sync_txnid, mo_Relaxed));
out->mi_unsync_volume = pgno2bytes(env, (size_t)unsynced_pages);
const uint64_t monotime_now = osal_monotime();
uint64_t ts = atomic_load64(&lck->mti_eoos_timestamp, mo_Relaxed);
@ -22390,25 +22385,27 @@ __cold static int env_info_snap(const MDBX_env *env, const MDBX_txn *txn,
out->mi_pgop_stat.fsync =
atomic_load64(&lck->mti_pgop_stat.fsync, mo_Relaxed);
#else
memset(&arg->mi_pgop_stat, 0, sizeof(arg->mi_pgop_stat));
memset(&out->mi_pgop_stat, 0, sizeof(out->mi_pgop_stat));
#endif /* MDBX_ENABLE_PGOP_STAT*/
}
out->mi_self_latter_reader_txnid = out->mi_latter_reader_txnid =
out->mi_recent_txnid;
txnid_t overall_latter_reader_txnid = out->mi_recent_txnid;
txnid_t self_latter_reader_txnid = overall_latter_reader_txnid;
if (env->me_lck_mmap.lck) {
for (size_t i = 0; i < out->mi_numreaders; ++i) {
const uint32_t pid =
atomic_load32(&lck->mti_readers[i].mr_pid, mo_AcquireRelease);
if (pid) {
const txnid_t txnid = safe64_read(&lck->mti_readers[i].mr_txnid);
if (out->mi_latter_reader_txnid > txnid)
out->mi_latter_reader_txnid = txnid;
if (pid == env->me_pid && out->mi_self_latter_reader_txnid > txnid)
out->mi_self_latter_reader_txnid = txnid;
if (overall_latter_reader_txnid > txnid)
overall_latter_reader_txnid = txnid;
if (pid == env->me_pid && self_latter_reader_txnid > txnid)
self_latter_reader_txnid = txnid;
}
}
}
out->mi_self_latter_reader_txnid = self_latter_reader_txnid;
out->mi_latter_reader_txnid = overall_latter_reader_txnid;
osal_compiler_barrier();
return MDBX_SUCCESS;
@ -22421,6 +22418,7 @@ __cold int env_info(const MDBX_env *env, const MDBX_txn *txn, MDBX_envinfo *out,
if (unlikely(rc != MDBX_SUCCESS))
return rc;
eASSERT(env, sizeof(snap) >= bytes);
while (1) {
rc = env_info_snap(env, txn, out, bytes, troika);
if (unlikely(rc != MDBX_SUCCESS))
@ -22439,6 +22437,12 @@ __cold int mdbx_env_info_ex(const MDBX_env *env, const MDBX_txn *txn,
if (unlikely((env == NULL && txn == NULL) || arg == NULL))
return MDBX_EINVAL;
const size_t size_before_bootid = offsetof(MDBX_envinfo, mi_bootid);
const size_t size_before_pgop_stat = offsetof(MDBX_envinfo, mi_pgop_stat);
if (unlikely(bytes != sizeof(MDBX_envinfo)) && bytes != size_before_bootid &&
bytes != size_before_pgop_stat)
return MDBX_EINVAL;
if (txn) {
int err = check_txn(txn, MDBX_TXN_BLOCKED - MDBX_TXN_ERROR);
if (unlikely(err != MDBX_SUCCESS))
@ -22454,12 +22458,6 @@ __cold int mdbx_env_info_ex(const MDBX_env *env, const MDBX_txn *txn,
env = txn->mt_env;
}
const size_t size_before_bootid = offsetof(MDBX_envinfo, mi_bootid);
const size_t size_before_pgop_stat = offsetof(MDBX_envinfo, mi_pgop_stat);
if (unlikely(bytes != sizeof(MDBX_envinfo)) && bytes != size_before_bootid &&
bytes != size_before_pgop_stat)
return MDBX_EINVAL;
meta_troika_t troika;
return env_info(env, txn, arg, bytes, &troika);
}