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fdr: align major structures to cachelines

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This commit is contained in:
Justin Viiret
2017-05-23 14:28:12 +10:00
committed by Matthew Barr
parent c36c071564
commit 9bdd370163
3 changed files with 43 additions and 29 deletions
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61
src/fdr/fdr_compile.cpp
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@@ -144,50 +144,59 @@ void FDRCompiler::createInitialState(FDR *fdr) {
}
}
/**
* \brief Lay out FDR structures in bytecode.
*
* Note that each major structure (header, table, confirm, flood control) is
* cacheline-aligned.
*/
bytecode_ptr<FDR> FDRCompiler::setupFDR() {
size_t tabSize = eng.getTabSizeBytes();
size_t tabSize = ROUNDUP_CL(eng.getTabSizeBytes());
auto floodControlTmp = setupFDRFloodControl(lits, eng, grey);
auto confirmTmp = setupFullConfs(lits, eng, bucketToLits, make_small);
auto floodTable = setupFDRFloodControl(lits, eng, grey);
auto confirmTable = setupFullConfs(lits, eng, bucketToLits, make_small);
assert(ISALIGNED_16(tabSize));
assert(ISALIGNED_16(confirmTmp.size()));
assert(ISALIGNED_16(floodControlTmp.size()));
size_t headerSize = ROUNDUP_16(sizeof(FDR));
size_t size = ROUNDUP_16(headerSize + tabSize + confirmTmp.size() +
floodControlTmp.size());
size_t headerSize = ROUNDUP_CL(sizeof(FDR));
size_t size = headerSize + tabSize + ROUNDUP_CL(confirmTable.size()) +
floodTable.size();
DEBUG_PRINTF("sizes base=%zu tabSize=%zu confirm=%zu floodControl=%zu "
"total=%zu\n",
headerSize, tabSize, confirmTmp.size(), floodControlTmp.size(),
headerSize, tabSize, confirmTable.size(), floodTable.size(),
size);
auto fdr = make_zeroed_bytecode_ptr<FDR>(size, 64);
assert(fdr); // otherwise would have thrown std::bad_alloc
u8 *fdr_base = (u8 *)fdr.get();
// Write header.
fdr->size = size;
fdr->engineID = eng.getID();
fdr->maxStringLen = verify_u32(maxLen(lits));
createInitialState(fdr.get());
u8 *fdr_base = (u8 *)fdr.get();
u8 *ptr = fdr_base + ROUNDUP_16(sizeof(FDR));
copy(tab.begin(), tab.end(), ptr);
ptr += tabSize;
memcpy(ptr, confirmTmp.get(), confirmTmp.size());
ptr += confirmTmp.size();
fdr->floodOffset = verify_u32(ptr - fdr_base);
memcpy(ptr, floodControlTmp.get(), floodControlTmp.size());
ptr += floodControlTmp.size();
/* we are allowing domains 9 to 15 only */
assert(eng.bits > 8 && eng.bits < 16);
assert(eng.bits > 8 && eng.bits < 16); // we allow domains 9 to 15 only
fdr->domain = eng.bits;
fdr->domainMask = (1 << eng.bits) - 1;
fdr->tabSize = (1 << eng.bits) * (eng.schemeWidth / 8);
fdr->stride = eng.stride;
createInitialState(fdr.get());
// Write table.
u8 *ptr = fdr_base + ROUNDUP_CL(sizeof(FDR));
assert(ISALIGNED_CL(ptr));
copy(tab.begin(), tab.end(), ptr);
ptr += tabSize;
// Write confirm structures.
assert(ISALIGNED_CL(ptr));
memcpy(ptr, confirmTable.get(), confirmTable.size());
ptr += ROUNDUP_CL(confirmTable.size());
// Write flood control structures.
assert(ISALIGNED_CL(ptr));
fdr->floodOffset = verify_u32(ptr - fdr_base);
memcpy(ptr, floodTable.get(), floodTable.size());
ptr += floodTable.size(); // last write, no need to round up
return fdr;
}