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mdbx: use single pointer to lck-less stub.

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Change-Id: I80542423386bd54cac574d1678af2620f147c769
This commit is contained in:
Leonid Yuriev
2021-04-28 03:44:54 +03:00
parent 7d249c97ad
commit e57e42d0f8
4 changed files with 230 additions and 264 deletions
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9
src/lck-windows.c
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@@ -262,11 +262,12 @@ MDBX_INTERNAL_FUNC int
mdbx_suspend_threads_before_remap(MDBX_env *env, mdbx_handle_array_t **array) {
const uintptr_t CurrentTid = GetCurrentThreadId();
int rc;
if (env->me_lck) {
if (env->me_lck_mmap.lck) {
/* Scan LCK for threads of the current process */
const MDBX_reader *const begin = env->me_lck->mti_readers;
const MDBX_reader *const begin = env->me_lck_mmap.lck->mti_readers;
const MDBX_reader *const end =
begin + atomic_load32(&env->me_lck->mti_numreaders, mo_AcquireRelease);
begin +
atomic_load32(&env->me_lck_mmap.lck->mti_numreaders, mo_AcquireRelease);
const uintptr_t WriteTxnOwner = env->me_txn0 ? env->me_txn0->mt_owner : 0;
for (const MDBX_reader *reader = begin; reader < end; ++reader) {
if (reader->mr_pid.weak != env->me_pid || !reader->mr_tid.weak) {
@@ -599,7 +600,7 @@ MDBX_INTERNAL_FUNC int mdbx_lck_destroy(MDBX_env *env,
* STATUS_USER_MAPPED_FILE/ERROR_USER_MAPPED_FILE */
if (env->me_map)
mdbx_munmap(&env->me_dxb_mmap);
if (env->me_lck) {
if (env->me_lck_mmap.lck) {
const bool synced = env->me_lck_mmap.lck->mti_unsynced_pages.weak == 0;
mdbx_munmap(&env->me_lck_mmap);
if (synced && !inprocess_neighbor && env->me_lfd != INVALID_HANDLE_VALUE &&