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perf(gameplay): optimize protobuf message allocation with Arena and limit thread pool size

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Switch to Arena allocation for protobuf messages to reduce heap allocations. Pass ChunkDataRsp by value to enable move semantics. Cap thread pool size to hardware concurrency with max 4 threads.
This commit is contained in:
zhenyan121
2026-06-26 21:52:57 +08:00
parent d31ec68f3c
commit 932ef9ace4
5 changed files with 106 additions and 84 deletions
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70
src/gameplay/server_world.cpp
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@@ -10,6 +10,7 @@
#include <utility>
using namespace std::chrono;
using namespace std::chrono_literals;
using namespace google::protobuf;
namespace Cubed {
ServerWorld::ServerWorld() {}
@@ -36,12 +37,14 @@ void ServerWorld::wait_all_chunk_tasks() {
}
void ServerWorld::send_time() {
UpdateTime rsp;
rsp.set_day_tick(m_day_tick);
rsp.set_game_tick(m_game_ticks);
Arena arena;
auto* rsp = Arena::Create<UpdateTime>(&arena);
rsp->set_day_tick(m_day_tick);
rsp->set_game_tick(m_game_ticks);
for (auto& [uuid, player] : m_players) {
player.get_session()->send(make_packet(rsp));
player.get_session()->send(make_packet(*rsp));
}
}
@@ -439,14 +442,15 @@ void ServerWorld::sync_player_pos(const std::string& uuid, float x, float y,
}
for (auto& session : other) {
PlayerInfoRsp rsp;
rsp.set_uuid(uuid);
rsp.set_name(name);
auto* pos = rsp.mutable_pos();
Arena arena;
auto* rsp = Arena::Create<PlayerInfoRsp>(&arena);
rsp->set_uuid(uuid);
rsp->set_name(name);
auto* pos = rsp->mutable_pos();
pos->set_x(x);
pos->set_y(y);
pos->set_z(z);
session->send(make_packet(rsp));
session->send(make_packet(*rsp));
}
}
@@ -461,10 +465,11 @@ void ServerWorld::handle_player_login(const std::string& name,
std::forward_as_tuple(name, uuid, *this, session, m_game_ticks));
}
m_uuid_to_name.emplace(uuid, name);
LoginRsp rsp;
rsp.set_success(true);
rsp.set_uuid(uuid);
session->send(make_packet(rsp));
Arena arena;
auto* rsp = Arena::Create<LoginRsp>(&arena);
rsp->set_success(true);
rsp->set_uuid(uuid);
session->send(make_packet(*rsp));
}
void ServerWorld::handle_player_exit(const std::string& uuid) {
@@ -491,9 +496,10 @@ void ServerWorld::handle_player_exit(const std::string& uuid) {
}
for (auto& s : sessions) {
LogoutRsp rsp;
rsp.set_uuid(uuid);
s->send(make_packet(rsp));
Arena arena;
auto* rsp = Arena::Create<LogoutRsp>(&arena);
rsp->set_uuid(uuid);
s->send(make_packet(*rsp));
}
}
@@ -508,8 +514,10 @@ glm::vec3 ServerWorld::get_player_pos(const std::string& uuid) const {
}
void ServerWorld::handle_chunk_req(const std::string& uuid, ChunkPos pos) {
ChunkDataRsp rsq;
auto* rsq_pos = rsq.mutable_pos();
Arena arean;
ChunkDataRsp* rsp = Arena::Create<ChunkDataRsp>(&arean);
auto* rsq_pos = rsp->mutable_pos();
rsq_pos->set_x(pos.x);
rsq_pos->set_z(pos.z);
{
@@ -518,9 +526,9 @@ void ServerWorld::handle_chunk_req(const std::string& uuid, ChunkPos pos) {
if (it == m_chunks.end()) {
return;
}
rsq.set_chunk_seed(it->second.seed());
rsq.set_biome_type(std::to_underlying(it->second.biome()));
auto* blocks = rsq.mutable_chunk_blocks();
rsp->set_chunk_seed(it->second.seed());
rsp->set_biome_type(std::to_underlying(it->second.biome()));
auto* blocks = rsp->mutable_chunk_blocks();
auto& chunk_blocks = it->second.get_chunk_blocks();
blocks->Assign(chunk_blocks.begin(), chunk_blocks.end());
auto& neighbor_blocks = it->second.get_neightbor_blocks();
@@ -534,10 +542,10 @@ void ServerWorld::handle_chunk_req(const std::string& uuid, ChunkPos pos) {
}
nb->Assign(blocks->begin(), blocks->end());
};
auto* nb1 = rsq.mutable_neighbor_blocks_1();
auto* nb2 = rsq.mutable_neighbor_blocks_2();
auto* nb3 = rsq.mutable_neighbor_blocks_3();
auto* nb4 = rsq.mutable_neighbor_blocks_4();
auto* nb1 = rsp->mutable_neighbor_blocks_1();
auto* nb2 = rsp->mutable_neighbor_blocks_2();
auto* nb3 = rsp->mutable_neighbor_blocks_3();
auto* nb4 = rsp->mutable_neighbor_blocks_4();
assign(nb1, neighbor_blocks[0]);
assign(nb2, neighbor_blocks[1]);
assign(nb3, neighbor_blocks[2]);
@@ -557,7 +565,7 @@ void ServerWorld::handle_chunk_req(const std::string& uuid, ChunkPos pos) {
return;
}
s->send(make_packet(rsq));
s->send(make_packet(*rsp));
}
void ServerWorld::handle_block_change(const BlockChangeReq& req) {
@@ -567,18 +575,20 @@ void ServerWorld::handle_block_change(const BlockChangeReq& req) {
if (!set_block(glm::ivec3(x, y, z), req.block())) {
return;
}
BlockChangeRsp rsp;
auto* pos = rsp.mutable_pos();
Arena arena;
BlockChangeRsp* rsp = Arena::Create<BlockChangeRsp>(&arena);
auto* pos = rsp->mutable_pos();
pos->set_x(x);
pos->set_y(y);
pos->set_z(z);
rsp.set_block(req.block());
rsp->set_block(req.block());
{
std::shared_lock lock(m_player_mutex);
for (auto& [uuid, player] : m_players) {
auto session = player.get_session();
if (session) {
session->send(make_packet(rsp));
session->send(make_packet(*rsp));
}
}
}