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mdbx: fix without-LCK (exclusive + readonly) mode.
This commit is contained in:
20
src/core.c
20
src/core.c
@@ -20144,15 +20144,17 @@ __cold static int fetch_envinfo_ex(const MDBX_env *env, const MDBX_txn *txn,
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arg->mi_self_latter_reader_txnid = arg->mi_latter_reader_txnid =
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arg->mi_recent_txnid;
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for (unsigned i = 0; i < arg->mi_numreaders; ++i) {
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const uint32_t pid =
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atomic_load32(&lck->mti_readers[i].mr_pid, mo_AcquireRelease);
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if (pid) {
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const txnid_t txnid = safe64_read(&lck->mti_readers[i].mr_txnid);
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if (arg->mi_latter_reader_txnid > txnid)
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arg->mi_latter_reader_txnid = txnid;
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if (pid == env->me_pid && arg->mi_self_latter_reader_txnid > txnid)
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arg->mi_self_latter_reader_txnid = txnid;
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if (env->me_lck_mmap.lck) {
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for (unsigned i = 0; i < arg->mi_numreaders; ++i) {
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const uint32_t pid =
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atomic_load32(&lck->mti_readers[i].mr_pid, mo_AcquireRelease);
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if (pid) {
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const txnid_t txnid = safe64_read(&lck->mti_readers[i].mr_txnid);
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if (arg->mi_latter_reader_txnid > txnid)
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arg->mi_latter_reader_txnid = txnid;
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if (pid == env->me_pid && arg->mi_self_latter_reader_txnid > txnid)
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arg->mi_self_latter_reader_txnid = txnid;
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}
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}
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}
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