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rose: move lookaround tables to engine blob

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This commit is contained in:
Justin Viiret 2017-02-28 11:18:23 +11:00 committed by Matthew Barr
parent b6254ca11f
commit e3d2d67833
2 changed files with 13 additions and 17 deletions
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26
src/rose/rose_build_bytecode.cpp
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@ -2683,13 +2683,15 @@ bool hasEodAnchors(const RoseBuildImpl &build, const build_context &bc,
}
static
void fillLookaroundTables(char *look_base, char *reach_base,
const vector<LookEntry> &look_vec) {
void writeLookaroundTables(build_context &bc, RoseEngine &proto) {
const auto &look_vec = bc.lookaround;
DEBUG_PRINTF("%zu lookaround table entries\n", look_vec.size());
s8 *look = (s8 *)look_base;
u8 *reach = (u8 *)reach_base; // base for 256-bit bitvectors
vector<s8> look_table(look_vec.size(), 0);
vector<u8> reach_table(REACH_BITVECTOR_LEN * look_vec.size(), 0);
s8 *look = look_table.data();
u8 *reach = reach_table.data();
for (const auto &le : look_vec) {
*look = verify_s8(le.offset);
const CharReach &cr = le.reach;
@ -2700,6 +2702,11 @@ void fillLookaroundTables(char *look_base, char *reach_base,
++look;
reach += REACH_BITVECTOR_LEN;
}
proto.lookaroundTableOffset =
bc.engine_blob.add(begin(look_table), end(look_table));
proto.lookaroundReachOffset =
bc.engine_blob.add(begin(reach_table), end(reach_table));
}
static
@ -5376,6 +5383,8 @@ aligned_unique_ptr<RoseEngine> RoseBuildImpl::buildFinalEngine(u32 minWidth) {
addSomRevNfas(bc, proto, ssm);
writeLookaroundTables(bc, proto);
// Enforce role table resource limit.
if (num_vertices(g) > cc.grey.limitRoseRoleCount) {
throw ResourceLimitError();
@ -5446,12 +5455,6 @@ aligned_unique_ptr<RoseEngine> RoseBuildImpl::buildFinalEngine(u32 minWidth) {
proto.leftOffset = currOffset;
currOffset += sizeof(LeftNfaInfo) * leftInfoTable.size();
proto.lookaroundReachOffset = currOffset;
currOffset += REACH_BITVECTOR_LEN * bc.lookaround.size();
proto.lookaroundTableOffset = currOffset;
currOffset += sizeof(s8) * bc.lookaround.size();
currOffset = ROUNDUP_N(currOffset, sizeof(u32));
proto.nfaInfoOffset = currOffset;
currOffset += sizeof(NfaInfo) * queue_count;
@ -5597,9 +5600,6 @@ aligned_unique_ptr<RoseEngine> RoseBuildImpl::buildFinalEngine(u32 minWidth) {
bc.engine_blob.write_bytes(engine.get());
copy_bytes(ptr + engine->leftOffset, leftInfoTable);
fillLookaroundTables(ptr + proto.lookaroundTableOffset,
ptr + proto.lookaroundReachOffset, bc.lookaround);
// Safety check: we shouldn't have written anything to the engine blob
// after we copied it into the engine bytecode.
assert(bc.engine_blob.size() == engineBlobSize);

4
src/rose/rose_build_dump.cpp
View File

@ -1694,10 +1694,6 @@ void roseDumpText(const RoseEngine *t, FILE *f) {
t->rolesWithStateCount * sizeof(u32));
fprintf(f, " - nfa info table : %zu bytes\n",
t->queueCount * sizeof(NfaInfo));
fprintf(f, " - lookaround table : %u bytes\n",
t->nfaInfoOffset - t->lookaroundTableOffset);
fprintf(f, " - lookaround reach : %u bytes\n",
t->lookaroundTableOffset - t->lookaroundReachOffset);
fprintf(f, "state space required : %u bytes\n", t->stateOffsets.end);
fprintf(f, " - history buffer : %u bytes\n", t->historyRequired);