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Commit 1e551946 authored by Zardosht Kasheff's avatar Zardosht Kasheff Committed by Yoni Fogel
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closes #5872, update verify_snapshot_system 

git-svn-id: file:///svn/toku/tokudb@55057 c7de825b-a66e-492c-adef-691d508d4ae1
parent 22b00bdf
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Showing with 78 additions and 43 deletions
ft/txn_manager.cc
View file @ 1e551946
......@@ -32,26 +32,58 @@ static bool is_txnid_live(TXN_MANAGER txn_manager, TXNID txnid) {
//Heaviside function to search through an OMT by a TXNID
int find_by_xid (const TOKUTXN &txn, const TXNID &txnidfind);
static bool is_txnid_live(TXN_MANAGER txn_manager, TXNID txnid) {
TOKUTXN result = NULL;
TXNID_PAIR id = { .parent_id64 = txnid, .child_id64 = TXNID_NONE };
toku_txn_manager_id2txn_unlocked(txn_manager, id, &result);
return (result != NULL);
}
static void toku_txn_manager_clone_state_for_gc_unlocked(
TXN_MANAGER txn_manager,
xid_omt_t* snapshot_xids,
rx_omt_t* referenced_xids,
xid_omt_t* live_root_txns
);
static void
verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
#if 0
uint32_t num_snapshot_txnids = txn_manager->snapshot_txnids.size();
uint32_t num_snapshot_txnids = txn_manager->num_snapshots;
TXNID snapshot_txnids[num_snapshot_txnids];
uint32_t num_live_txns = txn_manager->live_txns.size();
TOKUTXN snapshot_txns[num_snapshot_txnids];
uint32_t num_live_txns = txn_manager->live_root_txns.size();
TOKUTXN live_txns[num_live_txns];
uint32_t num_referenced_xid_tuples = txn_manager->referenced_xids.size();
struct referenced_xid_tuple *referenced_xid_tuples[num_referenced_xid_tuples];
// do this to get an omt of snapshot_txnids
xid_omt_t snapshot_txnids_omt;
rx_omt_t referenced_xids_omt;
xid_omt_t live_root_txns_omt;
toku_txn_manager_clone_state_for_gc_unlocked(
txn_manager,
&snapshot_txnids_omt,
&referenced_xids_omt,
&live_root_txns_omt
);
int r;
uint32_t i;
uint32_t j;
//set up arrays for easier access
for (i = 0; i < num_snapshot_txnids; i++) {
r = txn_manager->snapshot_txnids.fetch(i, &snapshot_txnids[i]);
assert_zero(r);
{
TOKUTXN curr_txn = txn_manager->snapshot_head;
uint32_t curr_index = 0;
while (curr_txn != NULL) {
snapshot_txns[curr_index] = curr_txn;
snapshot_txnids[curr_index] = curr_txn->snapshot_txnid64;
curr_txn = curr_txn->snapshot_next;
curr_index++;
}
}
for (i = 0; i < num_live_txns; i++) {
r = txn_manager->live_txns.fetch(i, &live_txns[i]);
r = txn_manager->live_root_txns.fetch(i, &live_txns[i]);
assert_zero(r);
}
for (i = 0; i < num_referenced_xid_tuples; i++) {
......@@ -63,9 +95,7 @@ verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
//Verify snapshot_txnids
for (i = 0; i < num_snapshot_txnids; i++) {
TXNID snapshot_xid = snapshot_txnids[i];
invariant(is_txnid_live(txn_manager, snapshot_xid));
TOKUTXN snapshot_txn;
toku_txn_manager_id2txn_unlocked(txn_manager, snapshot_xid, &snapshot_txn);
TOKUTXN snapshot_txn = snapshot_txns[i];
uint32_t num_live_root_txn_list = snapshot_txn->live_root_txn_list->size();
TXNID live_root_txn_list[num_live_root_txn_list];
{
......@@ -78,7 +108,7 @@ verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
// Only committed entries have return a youngest.
TXNID youngest = toku_get_youngest_live_list_txnid_for(
snapshot_xid,
txn_manager->snapshot_txnids,
snapshot_txnids_omt,
txn_manager->referenced_xids
);
invariant(youngest == TXNID_NONE);
......@@ -88,7 +118,7 @@ verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
invariant(live_xid <= snapshot_xid);
TXNID youngest = toku_get_youngest_live_list_txnid_for(
live_xid,
txn_manager->snapshot_txnids,
snapshot_txnids_omt,
txn_manager->referenced_xids
);
if (is_txnid_live(txn_manager, live_xid)) {
......@@ -113,26 +143,27 @@ verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
{
//verify neither pair->begin_id nor end_id is in live_list
r = txn_manager->live_txns.find_zero<TXNID, find_by_xid>(tuple->begin_id, nullptr, nullptr);
r = txn_manager->live_root_txns.find_zero<TXNID, find_by_xid>(tuple->begin_id, nullptr, nullptr);
invariant(r == DB_NOTFOUND);
r = txn_manager->live_txns.find_zero<TXNID, find_by_xid>(tuple->end_id, nullptr, nullptr);
r = txn_manager->live_root_txns.find_zero<TXNID, find_by_xid>(tuple->end_id, nullptr, nullptr);
invariant(r == DB_NOTFOUND);
}
{
//verify neither pair->begin_id nor end_id is in snapshot_xids
r = txn_manager->snapshot_txnids.find_zero<TXNID, toku_find_xid_by_xid>(tuple->begin_id, nullptr, nullptr);
invariant(r == DB_NOTFOUND);
r = txn_manager->snapshot_txnids.find_zero<TXNID, toku_find_xid_by_xid>(tuple->end_id, nullptr, nullptr);
invariant(r == DB_NOTFOUND);
//verify neither pair->begin_id nor end_id is in snapshot_xids
TOKUTXN curr_txn = txn_manager->snapshot_head;
uint32_t curr_index = 0;
while (curr_txn != NULL) {
invariant(tuple->begin_id != curr_txn->txnid.parent_id64);
invariant(tuple->end_id != curr_txn->txnid.parent_id64);
curr_txn = curr_txn->snapshot_next;
curr_index++;
}
}
{
// Verify number of references is correct
uint32_t refs_found = 0;
for (j = 0; j < num_snapshot_txnids; j++) {
TXNID snapshot_xid = snapshot_txnids[j];
TOKUTXN snapshot_txn;
toku_txn_manager_id2txn_unlocked(txn_manager, snapshot_xid, &snapshot_txn);
TOKUTXN snapshot_txn = snapshot_txns[j];
if (toku_is_txn_in_live_root_txn_list(*snapshot_txn->live_root_txn_list, tuple->begin_id)) {
refs_found++;
}
......@@ -146,34 +177,21 @@ verify_snapshot_system(TXN_MANAGER txn_manager UU()) {
// Verify youngest makes sense.
TXNID youngest = toku_get_youngest_live_list_txnid_for(
tuple->begin_id,
txn_manager->snapshot_txnids,
snapshot_txnids_omt,
txn_manager->referenced_xids
);
invariant(youngest != TXNID_NONE);
invariant(youngest > tuple->begin_id);
invariant(youngest < tuple->end_id);
// Youngest must be found, and must be a snapshot txn
r = txn_manager->snapshot_txnids.find_zero<TXNID, toku_find_xid_by_xid>(youngest, nullptr, nullptr);
r = snapshot_txnids_omt.find_zero<TXNID, toku_find_xid_by_xid>(youngest, nullptr, nullptr);
invariant_zero(r);
}
}
}
{
//Verify live_txns
for (i = 0; i < num_live_txns; i++) {
TOKUTXN txn = live_txns[i];
bool expect = txn->snapshot_txnid64 == txn->txnid64;
{
//verify pair->xid2 is in snapshot_xids
r = txn_manager->snapshot_txnids.find_zero<TXNID, toku_find_xid_by_xid>(txn->txnid64, nullptr, nullptr);
invariant(r==0 || r==DB_NOTFOUND);
invariant((r==0) == (expect!=0));
}
}
}
#endif
snapshot_txnids_omt.destroy();
referenced_xids_omt.destroy();
live_root_txns_omt.destroy();
}
void toku_txn_manager_init(TXN_MANAGER* txn_managerp) {
......@@ -679,14 +697,13 @@ void toku_txn_manager_finish_txn(TXN_MANAGER txn_manager, TOKUTXN txn) {
return;
}
void toku_txn_manager_clone_state_for_gc(
static void toku_txn_manager_clone_state_for_gc_unlocked(
TXN_MANAGER txn_manager,
xid_omt_t* snapshot_xids,
rx_omt_t* referenced_xids,
xid_omt_t* live_root_txns
)
{
txn_manager_lock(txn_manager);
TXNID* snapshot_xids_array = NULL;
XMALLOC_N(txn_manager->num_snapshots, snapshot_xids_array);
TOKUTXN curr_txn = txn_manager->snapshot_head;
......@@ -704,9 +721,27 @@ void toku_txn_manager_clone_state_for_gc(
referenced_xids->clone(txn_manager->referenced_xids);
setup_live_root_txn_list(&txn_manager->live_root_ids, live_root_txns);
}
void toku_txn_manager_clone_state_for_gc(
TXN_MANAGER txn_manager,
xid_omt_t* snapshot_xids,
rx_omt_t* referenced_xids,
xid_omt_t* live_root_txns
)
{
txn_manager_lock(txn_manager);
toku_txn_manager_clone_state_for_gc_unlocked(
txn_manager,
snapshot_xids,
referenced_xids,
live_root_txns
);
txn_manager_unlock(txn_manager);
}
void toku_txn_manager_id2txn_unlocked(TXN_MANAGER txn_manager, TXNID_PAIR txnid, TOKUTXN *result) {
TOKUTXN txn;
int r = txn_manager->live_root_txns.find_zero<TXNID, find_by_xid>(txnid.parent_id64, &txn, nullptr);
......
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