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Code Issues

Fixed wrong flags assignment when backversions chain is stored.

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Correct debug output and add a bit of new debug messages.
This commit is contained in:
hvlad 2016-03-31 13:35:57 +03:00
parent 5836bcf2e8
commit 2f0c8b2683
1 changed files with 41 additions and 6 deletions
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47
src/jrd/vio.cpp
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@ -1377,8 +1377,8 @@ void VIO_data(thread_db* tdbb, record_param* rpb, MemoryPool* pool)
rpb->rpb_number.getValue(), length, format->fmt_length);
VIO_trace(DEBUG_WRITES_INFO,
" record %" SLONGFORMAT"d:%d, rpb_trans %" SQUADFORMAT
"d, flags %d, back %" SLONGFORMAT"d:%d, fragment %" SLONGFORMAT"d:%d\n",
" record %" SLONGFORMAT":%d, rpb_trans %" SQUADFORMAT
"d, flags %d, back %" SLONGFORMAT":%d, fragment %" SLONGFORMAT":%d\n",
rpb->rpb_page, rpb->rpb_line, rpb->rpb_transaction_nr, rpb->rpb_flags,
rpb->rpb_b_page, rpb->rpb_b_line, rpb->rpb_f_page, rpb->rpb_f_line);
#endif
@ -1956,6 +1956,19 @@ static void delete_version_chain(thread_db* tdbb, record_param* rpb, bool delete
* because we have the last existing copy of them.
*
**************************************/
#ifdef VIO_DEBUG
VIO_trace(DEBUG_TRACE,
"delete_version_chain (record_param %" SQUADFORMAT", delete_head %s)\n",
rpb->rpb_number.getValue(), delete_head ? "true" : "false");
VIO_trace(DEBUG_TRACE_INFO,
" record %" SLONGFORMAT":%d, rpb_trans %" SQUADFORMAT
", flags %d, back %" SLONGFORMAT":%d, fragment %" SLONGFORMAT":%d\n",
rpb->rpb_page, rpb->rpb_line, rpb->rpb_transaction_nr,
rpb->rpb_flags, rpb->rpb_b_page, rpb->rpb_b_line,
rpb->rpb_f_page, rpb->rpb_f_line);
#endif
ULONG prior_page = 0;
while (rpb->rpb_b_page != 0)
@ -2019,6 +2032,20 @@ void VIO_intermediate_gc(
return;
}
#ifdef VIO_DEBUG
VIO_trace(DEBUG_TRACE,
"VIO_intermediate_gc (record_param %" SQUADFORMAT", transaction %"
SQUADFORMAT")\n",
rpb->rpb_number.getValue(), transaction ? transaction->tra_number : 0);
VIO_trace(DEBUG_TRACE_INFO,
" record %" SLONGFORMAT":%d, rpb_trans %" SQUADFORMAT
", flags %d, back %" SLONGFORMAT":%d, fragment %" SLONGFORMAT":%d\n",
rpb->rpb_page, rpb->rpb_line, rpb->rpb_transaction_nr,
rpb->rpb_flags, rpb->rpb_b_page, rpb->rpb_b_line,
rpb->rpb_f_page, rpb->rpb_f_line);
#endif
// Determine what records need to stay and which need to go.
// For that we iterate all records in newest->oldest order (natural order is oldest->newest)
// and move unnecessary records from staying into going stack.
@ -2051,7 +2078,6 @@ void VIO_intermediate_gc(
// Delta-compress and store new versions chain for staying records (iterate oldest->newest)
record_param staying_chain_rpb;
staying_chain_rpb.getWindow(tdbb).win_flags = WIN_secondary;
staying_chain_rpb.rpb_flags = rpb_chained;
staying_chain_rpb.rpb_relation = rpb->rpb_relation;
PageStack precedence_stack;
@ -2060,6 +2086,7 @@ void VIO_intermediate_gc(
fb_assert(staying.hasData());
Record* current_record = const_i.object(), *org_record;
++const_i;
bool prior_delta = false;
while (const_i.hasData()) {
org_record = current_record;
current_record = const_i.object();
@ -2069,15 +2096,18 @@ void VIO_intermediate_gc(
Compressor::makeDiff(current_record->getLength(), current_record->getData(),
org_record->getLength(), org_record->getData(),
sizeof(differences), differences);
staying_chain_rpb.rpb_flags = rpb_chained | (prior_delta ? rpb_delta : 0);
if ((l < sizeof(differences)) && (l < org_record->getLength()))
{
staying_chain_rpb.rpb_address = differences;
staying_chain_rpb.rpb_length = (ULONG) l;
staying_chain_rpb.rpb_flags |= rpb_delta;
prior_delta = true;
} else {
staying_chain_rpb.rpb_address = org_record->getData();
staying_chain_rpb.rpb_length = org_record->getLength();
staying_chain_rpb.rpb_flags &= ~rpb_delta;
prior_delta = false;
}
staying_chain_rpb.rpb_transaction_nr = org_record->getTransaction_nr();
staying_chain_rpb.rpb_format_number = org_record->getFormat()->fmt_version;
@ -2095,7 +2125,8 @@ void VIO_intermediate_gc(
if (rpb->rpb_flags & rpb_deleted) {
staying_chain_rpb.rpb_address = current_record->getData();
staying_chain_rpb.rpb_length = current_record->getLength();
staying_chain_rpb.rpb_flags &= ~rpb_delta;
staying_chain_rpb.rpb_flags = rpb_chained | (prior_delta ? rpb_delta : 0);
prior_delta = false;
staying_chain_rpb.rpb_transaction_nr = current_record->getTransaction_nr();
staying_chain_rpb.rpb_format_number = current_record->getFormat()->fmt_version;
if (staying_chain_rpb.rpb_page) {
@ -2140,6 +2171,10 @@ void VIO_intermediate_gc(
temp_rpb.rpb_b_page = staying_chain_rpb.rpb_page;
temp_rpb.rpb_b_line = staying_chain_rpb.rpb_line;
CCH_MARK(tdbb, &temp_rpb.getWindow(tdbb));
if (prior_delta)
temp_rpb.rpb_flags |= rpb_delta;
else
temp_rpb.rpb_flags &= ~rpb_delta;
DPM_rewrite_header(tdbb, &temp_rpb);
CCH_RELEASE(tdbb, &temp_rpb.getWindow(tdbb));