Green-Sky/solanaceae_ngc_ft1
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move self have_chunk to bitset

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Green Sky 2024-06-25 12:08:17 +02:00
parent c8619561ec
commit e9e38db1d5
No known key found for this signature in database
3 changed files with 60 additions and 48 deletions
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5
solanaceae/ngc_ft1_sha1/bitset.hpp
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@ -11,13 +11,16 @@
struct BitSet {
std::vector<uint8_t> _bytes;
BitSet(void) = delete;
BitSet(void) = default;
BitSet(const BitSet&) = default;
BitSet(BitSet&&) = default;
BitSet(size_t size) {
_bytes.resize((size+7)/8);
}
BitSet& operator=(const BitSet&) = default;
BitSet& operator=(BitSet&&) = default;
bool operator[](size_t pos) const {
assert(pos < size_bits());
if (pos >= size_bits()) {

7
solanaceae/ngc_ft1_sha1/components.hpp
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@ -8,6 +8,7 @@
#include "./ft1_sha1_info.hpp"
#include "./hash_utils.hpp"
#include "./bitset.hpp"
#include <vector>
@ -31,7 +32,11 @@ namespace Components {
};
struct FT1ChunkSHA1Cache {
std::vector<bool> have_chunk;
//std::vector<bool> have_chunk;
// have_chunk is the size of info.chunks.size(), or empty if have_all
// keep in mind bitset rounds up to 8s
BitSet have_chunk{0};
bool have_all {false};
size_t have_count {0};
entt::dense_map<SHA1Digest, std::vector<size_t>> chunk_hash_to_index;

26
solanaceae/ngc_ft1_sha1/sha1_ngcft1.cpp
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@ -424,8 +424,12 @@ void SHA1_NGCFT1::iterate(float delta) {
auto& cc = ce.get<Components::FT1ChunkSHA1Cache>();
const auto& info = ce.get<Components::FT1InfoSHA1>();
if (cc.have_all) {
_queue_content_want_chunk.pop_front();
} else {
// naive, choose first chunk we dont have (double requests!!)
for (size_t chunk_idx = 0; chunk_idx < cc.have_chunk.size(); chunk_idx++) {
// TODO: piece picker, choose what other have (invert selectPeerForRequest)
for (size_t chunk_idx = 0; chunk_idx < info.chunks.size() /* cc.total_ */; chunk_idx++) {
if (cc.have_chunk[chunk_idx]) {
continue;
}
@ -433,11 +437,11 @@ void SHA1_NGCFT1::iterate(float delta) {
// check by hash
if (cc.haveChunk(info.chunks.at(chunk_idx))) {
// TODO: fix this, a completed chunk should fill all the indecies it occupies
cc.have_chunk[chunk_idx] = true;
cc.have_chunk.set(chunk_idx);
cc.have_count += 1;
if (cc.have_count == info.chunks.size()) {
cc.have_all = true;
cc.have_chunk.clear();
cc.have_chunk = BitSet(0); // conserve space
break;
}
continue;
@ -472,6 +476,7 @@ void SHA1_NGCFT1::iterate(float delta) {
}
}
}
}
bool SHA1_NGCFT1::onEvent(const Message::Events::MessageUpdated& e) {
// see tox_transfer_manager.cpp for reference
@ -518,6 +523,7 @@ bool SHA1_NGCFT1::onEvent(const Message::Events::MessageUpdated& e) {
{ // next, create chuck cache and check for existing data
auto& cc = ce.emplace<Components::FT1ChunkSHA1Cache>();
auto& bytes_received = ce.get_or_emplace<Message::Components::Transfer::BytesReceived>().total;
cc.have_chunk = BitSet(info.chunks.size());
cc.have_all = false;
cc.have_count = 0;
@ -534,9 +540,8 @@ bool SHA1_NGCFT1::onEvent(const Message::Events::MessageUpdated& e) {
const auto data_hash = SHA1Digest{hash_sha1(existing_data.ptr, existing_data.size)};
const bool data_equal = data_hash == info.chunks.at(i);
cc.have_chunk.push_back(data_equal);
if (data_equal) {
cc.have_chunk.set(i);
cc.have_count += 1;
bytes_received += chunk_size;
//std::cout << "existing i[" << info.chunks.at(i) << "] == d[" << data_hash << "]\n";
@ -558,7 +563,6 @@ bool SHA1_NGCFT1::onEvent(const Message::Events::MessageUpdated& e) {
}
} else {
for (size_t i = 0; i < info.chunks.size(); i++) {
cc.have_chunk.push_back(false);
_chunks[info.chunks[i]] = ce;
cc.chunk_hash_to_index[info.chunks[i]].push_back(i);
}
@ -940,17 +944,17 @@ bool SHA1_NGCFT1::onEvent(const Events::NGCFT1_recv_done& e) {
if (!cc.have_all) {
for (const auto inner_chunk_index : std::get<ReceivingTransfer::Chunk>(tv).chunk_indices) {
if (!cc.have_all && !cc.have_chunk.at(inner_chunk_index)) {
cc.have_chunk.at(inner_chunk_index) = true;
if (!cc.have_all && !cc.have_chunk[inner_chunk_index]) {
cc.have_chunk.set(inner_chunk_index);
cc.have_count += 1;
if (cc.have_count == info.chunks.size()) {
// debug check
for ([[maybe_unused]] const bool it : cc.have_chunk) {
assert(it);
for ([[maybe_unused]] size_t i = 0; i < info.chunks.size(); i++) {
assert(cc.have_chunk[i]);
}
cc.have_all = true;
cc.have_chunk.clear(); // not wasting memory
cc.have_chunk = BitSet(0); // not wasting memory
std::cout << "SHA1_NGCFT1: got all chunks for \n" << info << "\n";
// HACK: remap file, to clear ram