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Merged
merged 2 commits into from
Sep 19, 2023
Merged

Fix build warnings and a few assorted tweaks #13

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537687d
fix build warnings and a few assorted tweaks
fu5ha Sep 12, 2023
37130bb
remove unnecessary ref wrappers
fu5ha Sep 13, 2023
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7 changes: 5 additions & 2 deletions benchmark/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,14 @@ version = "0.0.0"
publish = false

[features]
default = ["alkahest/default"]

nightly = ["criterion/real_blackbox"]

default = ["alkahest/default", "speedy", "rkyv", "serde", "bincode"]

[dependencies]
alkahest = { path = "..", features = ["derive"], default-features = false }
criterion = { version = "0.4", features = ["real_blackbox"] }
criterion = { version = "0.4" }
serde = { version = "1.0", features = ["derive"], optional = true }
serde_json = { version = "1.0", optional = true }
bincode = { version = "1.3", optional = true }
Expand Down
119 changes: 110 additions & 9 deletions benchmark/benches/benchmark.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -11,20 +11,20 @@ extern crate rkyv;
#[cfg(feature = "speedy")]
extern crate speedy;

use alkahest::{alkahest, Deserialize, Formula, Lazy, Ref, SerIter, Serialize};
use alkahest::{alkahest, Deserialize, Formula, Lazy, SerIter, Serialize};
use criterion::{black_box, criterion_group, criterion_main, Criterion};

#[cfg(feature = "rkyv")]
use bytecheck::CheckBytes;
use rand::{
distributions::{Alphanumeric, DistString},
rngs::SmallRng,
thread_rng, Rng, SeedableRng,
Rng, SeedableRng,
};

#[derive(Debug, Clone, Formula, Serialize, Deserialize)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize))]
#[cfg_attr(feature = "rkyv", archive_attr(derive(CheckBytes)))]
#[cfg_attr(feature = "speedy", derive(speedy::Writable, speedy::Readable))]
pub enum GameMessage {
Expand All @@ -42,7 +42,7 @@ pub enum GameMessageRead<'de> {

#[derive(Debug, Clone, Formula, Serialize, Deserialize)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize))]
#[cfg_attr(feature = "rkyv", archive_attr(derive(CheckBytes)))]
#[cfg_attr(feature = "speedy", derive(speedy::Writable, speedy::Readable))]
pub enum ClientMessage {
Expand All @@ -60,7 +60,7 @@ pub enum ClientMessageRead<'de> {

#[derive(Debug, Clone, Formula, Serialize, Deserialize)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize))]
#[cfg_attr(feature = "rkyv", archive_attr(derive(CheckBytes)))]
#[cfg_attr(feature = "speedy", derive(speedy::Writable, speedy::Readable))]
pub enum ServerMessage {
Expand All @@ -78,7 +78,7 @@ pub enum ServerMessageRead<'de> {

#[derive(Debug, Formula, Serialize, Deserialize)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize))]
#[cfg_attr(feature = "rkyv", derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize))]
#[cfg_attr(feature = "rkyv", archive_attr(derive(CheckBytes)))]
#[cfg_attr(feature = "speedy", derive(speedy::Writable, speedy::Readable))]
pub struct NetPacket<G> {
Expand Down Expand Up @@ -123,9 +123,9 @@ fn messages<'a>(mut rng: impl Rng + 'a, len: usize) -> impl Iterator<Item = Game
pub fn criterion_benchmark(c: &mut Criterion) {
let mut buffer = Vec::with_capacity(1 << 14);
buffer.resize(buffer.capacity(), 0);
let mut rng = SmallRng::seed_from_u64(42);
let rng = SmallRng::seed_from_u64(42);

const LEN: usize = 200;
const LEN: usize = 2000;
let mut size = 0;

{
Expand Down Expand Up @@ -176,6 +176,41 @@ pub fn criterion_benchmark(c: &mut Criterion) {
}
})
});

group.bench_function("deserialize", |b| {
b.iter(|| {
let packet = alkahest::deserialize::<
NetPacket<GameMessage>,
NetPacket<GameMessage>,
>(&buffer[..size])
.unwrap();

for message in packet.game_messages.iter() {
match message {
GameMessage::Client(ClientMessage::ClientData {
nickname,
clan,
}) => {
black_box(nickname);
black_box(clan);
}
GameMessage::Client(ClientMessage::Chat(message)) => {
black_box(message);
}
GameMessage::Server(ServerMessage::ServerData(data)) => {
black_box(data);
}
GameMessage::Server(ServerMessage::ClientChat {
client_id,
message,
}) => {
black_box(client_id);
black_box(message);
}
}
}
})
});
}

#[cfg(feature = "bincode")]
Expand All @@ -194,7 +229,7 @@ pub fn criterion_benchmark(c: &mut Criterion) {
})
});

group.bench_function("read", |b| {
group.bench_function("deserialize", |b| {
b.iter(|| {
let packet = bincode::deserialize::<NetPacket<GameMessage>>(&buffer).unwrap();

Expand Down Expand Up @@ -268,6 +303,39 @@ pub fn criterion_benchmark(c: &mut Criterion) {
}
})
});

group.bench_function("deserialize", |b| {
b.iter(|| {
use rkyv::Deserialize;
let archive = rkyv::check_archived_root::<NetPacket<GameMessage>>(&vec[..]).unwrap();
let packet: NetPacket<GameMessage> = archive.deserialize(&mut rkyv::Infallible).unwrap();

for message in packet.game_messages.iter() {
match message {
GameMessage::Client(ClientMessage::ClientData {
nickname,
clan,
}) => {
black_box(nickname);
black_box(clan);
}
GameMessage::Client(ClientMessage::Chat(message)) => {
black_box(message);
}
GameMessage::Server(ServerMessage::ServerData(data)) => {
black_box(data);
}
GameMessage::Server(ServerMessage::ClientChat {
client_id,
message,
}) => {
black_box(client_id);
black_box(message);
}
}
}
})
});
}

#[cfg(feature = "speedy")]
Expand Down Expand Up @@ -321,6 +389,39 @@ pub fn criterion_benchmark(c: &mut Criterion) {
}
})
});

group.bench_function("deserialize", |b| {
b.iter(|| {
let packet =
<NetPacket<GameMessage> as speedy::Readable<_>>::read_from_buffer(&buffer)
.unwrap();

for message in packet.game_messages.iter() {
match message {
GameMessage::Client(ClientMessage::ClientData {
nickname,
clan,
}) => {
black_box(nickname);
black_box(clan);
}
GameMessage::Client(ClientMessage::Chat(message)) => {
black_box(message);
}
GameMessage::Server(ServerMessage::ServerData(data)) => {
black_box(data);
}
GameMessage::Server(ServerMessage::ClientChat {
client_id,
message,
}) => {
black_box(client_id);
black_box(message);
}
}
}
})
});
}
}

Expand Down
4 changes: 2 additions & 2 deletions src/primitive.rs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
use core::{borrow::Borrow, mem::size_of};
use core::mem::size_of;

use crate::{
buffer::Buffer,
Expand Down Expand Up @@ -157,7 +157,7 @@ impl Serialize<bool> for &bool {
where
B: Buffer,
{
<u8 as Serialize<u8>>::serialize(u8::from(*self.borrow()), sizes, buffer)
<u8 as Serialize<u8>>::serialize(u8::from(*self), sizes, buffer)
}

#[inline(always)]
Expand Down
1 change: 1 addition & 0 deletions src/serialize.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -496,6 +496,7 @@ where
let size = FixedUsize::truncate_unchecked(size);

if F::EXACT_SIZE {
debug_assert_eq!(size, FixedUsize::truncate_unchecked(F::MAX_STACK_SIZE.unwrap()));
buffer.write_stack(heap, stack, &address.to_le_bytes())?;
} else {
buffer.write_stack(heap, stack, &size.to_le_bytes())?;
Expand Down
68 changes: 46 additions & 22 deletions src/tests/net.rs
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Expand Up @@ -6,68 +6,92 @@ use rand::{
};

use crate::{
alkahest, read_packet, write_packet_to_vec, Formula, Lazy, SerIter, Serialize, SerializeRef,
alkahest, read_packet, write_packet_to_vec, Deserialize, Formula, Lazy, SerIter, Serialize, SerializeRef, Ref,
};

#[alkahest(Formula)]
pub enum GameMessageFormula {
Client(ClientMessageFormula),
Server(ServerMessageFormula),
}

#[derive(Debug, Clone, PartialEq, Eq)]
#[alkahest(Formula, Serialize, Deserialize)]
#[alkahest(Serialize<GameMessageFormula>, Deserialize<'_, GameMessageFormula>)]
pub enum GameMessage {
Client(ClientMessage),
Server(ServerMessage),
}

#[derive(Debug)]
#[alkahest(Deserialize<'de, GameMessage>)]
#[alkahest(Deserialize<'de, GameMessageFormula>)]
pub enum GameMessageRead<'de> {
Client(ClientMessageRead<'de>),
Server(ServerMessageRead<'de>),
}

#[alkahest(Formula)]
pub enum ClientMessageFormula {
ClientData { nickname: Ref<str>, clan: Ref<str> },
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Ref<str> and String are distinct but actually equivalent formulas.

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Right :D Which is cool

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So why making separate type? ClientMessage as Formula would be the same.

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It was not obvious to me from documentation what a formula actually is -- that it is a rust type that mirrors the type you want that contains types which have a direct exact representation. Making this split it becomes more obvious what's going on -- in my eyes at least. And it shows how you can create multiple formulas which the same type can serialize as / deserialize from, or customize the exact representation with wrappers like Ref. The point of all this change was to try what it would look like to 1. separate all the formulas 2. make tweaks like adding Ref to build my intuition on the versioned wrapper we talked about in the other thread.

Whether the proper place for that is in a test like here: perhaps not x) but I was just playing around with it to get a better idea of how things work.

Probably it should go in a separate test/example to show it better. I would be fine with reverting the formula changes in this file for sure.

Chat(Ref<str>),
}

#[derive(Debug, PartialEq, Eq, Clone)]
#[alkahest(Formula, Serialize, Deserialize)]
#[alkahest(Serialize<ClientMessageFormula>, Deserialize<'_, ClientMessageFormula>)]
pub enum ClientMessage {
ClientData { nickname: String, clan: String },
Chat(String),
}

#[derive(Debug)]
#[alkahest(Deserialize<'de, ClientMessage>)]
#[alkahest(Deserialize<'de, ClientMessageFormula>)]
pub enum ClientMessageRead<'de> {
ClientData { nickname: &'de str, clan: &'de str },
Chat(&'de str),
}

#[alkahest(Formula)]
pub enum ServerMessageFormula {
ServerData(u64),
ClientChat { client_id: u64, message: Ref<str> },
}

#[derive(Debug, PartialEq, Eq, Clone)]
#[alkahest(Formula, Serialize, Deserialize)]
#[alkahest(Serialize<ServerMessageFormula>, Deserialize<'_, ServerMessageFormula>)]
pub enum ServerMessage {
ServerData(u64),
ClientChat { client_id: u64, message: String },
}

#[derive(Debug)]
#[alkahest(Deserialize<'de, ServerMessage>)]
#[alkahest(Deserialize<'de, ServerMessageFormula>)]
pub enum ServerMessageRead<'de> {
ServerData(u64),
ClientChat { client_id: u64, message: &'de str },
}

#[alkahest(Formula)]
pub struct NetPacketFormula<F> {
pub game_messages: Vec<F>,
}

#[derive(Debug)]
#[alkahest(Formula, Serialize, Deserialize)]
#[alkahest(for<F: Formula> Serialize<NetPacketFormula<F>> where G: Serialize<F>)]
#[alkahest(for<'de, F: Formula> Deserialize<'de, NetPacketFormula<F>> where G: Deserialize<'de, F>)]
pub struct NetPacket<G> {
pub game_messages: Vec<G>,
}

#[derive(Debug)]
#[alkahest(for<X: Formula> Serialize<NetPacket<X>> where G: Serialize<[X]>)]
#[alkahest(for<X: Formula> SerializeRef<NetPacket<X>> where G: SerializeRef<[X]>)]
#[alkahest(for<F: Formula> Serialize<NetPacketFormula<F>> where G: Serialize<[F]>)]
#[alkahest(for<F: Formula> SerializeRef<NetPacketFormula<F>> where G: SerializeRef<[F]>)]
pub struct NetPacketWrite<G> {
pub game_messages: G,
}

#[derive(Debug)]
#[alkahest(Deserialize<'de, NetPacket::<G>> where G: Formula)]
pub struct NetPacketRead<'de, G> {
pub game_messages: Lazy<'de, [G]>,
#[alkahest(Deserialize<'de, NetPacketFormula<F>> where F: Formula)]
pub struct NetPacketRead<'de, F> {
pub game_messages: Lazy<'de, [F]>,
}

fn get_string(rng: &mut impl Rng) -> String {
Expand Down Expand Up @@ -103,15 +127,15 @@ fn test_net_packet() {
const LEN: usize = 1000;

let mut buffer = Vec::new();
let size = write_packet_to_vec::<NetPacket<GameMessage>, _>(
let size = write_packet_to_vec::<NetPacketFormula<GameMessageFormula>, _>(
NetPacketWrite {
game_messages: SerIter(messages(rng.clone(), LEN)),
},
&mut buffer,
);

let mut buffer2 = Vec::new();
let size2 = write_packet_to_vec::<NetPacket<GameMessage>, _>(
let size2 = write_packet_to_vec::<NetPacketFormula<GameMessageFormula>, _>(
NetPacket {
game_messages: messages(rng, LEN).collect::<Vec<_>>(),
},
Expand All @@ -122,23 +146,23 @@ fn test_net_packet() {
assert_eq!(buffer[..size], buffer2[..size]);

let (packet, _) =
read_packet::<NetPacket<GameMessage>, NetPacketRead<GameMessage>>(&buffer[..]).unwrap();
read_packet::<NetPacketFormula<GameMessageFormula>, NetPacketRead<GameMessageFormula>>(&buffer[..]).unwrap();

for message in packet.game_messages.iter::<GameMessageRead>() {
match message.unwrap() {
GameMessageRead::Client(ClientMessageRead::ClientData { nickname, clan }) => {
drop(nickname);
drop(clan);
let _ = nickname;
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Any reason for this besides style?

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Clippy doesn't like dropping references and says to ignore it via _ instead. But yeah it's ultimately just style.

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If default-configured clippy says so I have no objections.

let _ = clan;
}
GameMessageRead::Client(ClientMessageRead::Chat(message)) => {
drop(message);
let _ = message;
}
GameMessageRead::Server(ServerMessageRead::ServerData(data)) => {
drop(data);
let _ = data;
}
GameMessageRead::Server(ServerMessageRead::ClientChat { client_id, message }) => {
drop(client_id);
drop(message);
let _ = client_id;
let _ = message;
}
}
}
Expand Down