mirror of
https://github.com/google/flatbuffers.git
synced 2026-06-24 07:41:48 +00:00
Port FlatBuffers to Rust (#4898)
This is a port of FlatBuffers to Rust. It provides code generation and a runtime library derived from the C++ implementation. It utilizes the Rust type system to provide safe and fast traversal of FlatBuffers data. There are 188 tests, including many fuzz tests of roundtrips for various serialization scenarios. Initial benchmarks indicate that the canonical example payload can be written in ~700ns, and traversed in ~100ns. Rustaceans may be interested in the Follow, Push, and SafeSliceAccess traits. These traits lift traversals, reads, writes, and slice accesses into the type system, providing abstraction with no runtime penalty.
This commit is contained in:
Robert
285
tests/rust_usage_test/Cargo.lock
generated
Normal file
285
tests/rust_usage_test/Cargo.lock
generated
Normal file
@@ -0,0 +1,285 @@
|
||||
[[package]]
|
||||
name = "aho-corasick"
|
||||
version = "0.6.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "atty"
|
||||
version = "0.2.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "bencher"
|
||||
version = "0.1.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "bitflags"
|
||||
version = "1.0.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "cfg-if"
|
||||
version = "0.1.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
||||
[[package]]
|
||||
name = "env_logger"
|
||||
version = "0.5.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"atty 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"humantime 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"regex 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"termcolor 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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||||
name = "flatbuffers"
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||||
version = "0.1.0"
|
||||
dependencies = [
|
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"smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
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]
|
||||
|
||||
[[package]]
|
||||
name = "fuchsia-zircon"
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version = "0.3.3"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
|
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"bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
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"fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "fuchsia-zircon-sys"
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version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "humantime"
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version = "1.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "lazy_static"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "libc"
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version = "0.2.42"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "log"
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version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
|
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"cfg-if 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "memchr"
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version = "2.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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||||
name = "quick-error"
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version = "1.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "quickcheck"
|
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version = "0.6.2"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
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"env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
|
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"rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "rand"
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||||
version = "0.4.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "redox_syscall"
|
||||
version = "0.1.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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||||
name = "redox_termios"
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version = "0.1.1"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
|
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"redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
|
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]
|
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||||
[[package]]
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||||
name = "regex"
|
||||
version = "1.0.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"aho-corasick 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"regex-syntax 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"thread_local 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
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|
||||
[[package]]
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||||
name = "regex-syntax"
|
||||
version = "0.6.1"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
dependencies = [
|
||||
"ucd-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
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||||
|
||||
[[package]]
|
||||
name = "rust_usage_test"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"bencher 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"flatbuffers 0.1.0",
|
||||
"quickcheck 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "smallvec"
|
||||
version = "0.6.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "termcolor"
|
||||
version = "0.3.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "termion"
|
||||
version = "1.5.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
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||||
[[package]]
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||||
name = "thread_local"
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||||
version = "0.3.5"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
dependencies = [
|
||||
"lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "ucd-util"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
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||||
name = "unreachable"
|
||||
version = "1.0.0"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "utf8-ranges"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "void"
|
||||
version = "1.0.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "wincolor"
|
||||
version = "0.1.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[metadata]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"checksum ucd-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fd2be2d6639d0f8fe6cdda291ad456e23629558d466e2789d2c3e9892bda285d"
|
||||
"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
"checksum wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "eeb06499a3a4d44302791052df005d5232b927ed1a9658146d842165c4de7767"
|
||||
22
tests/rust_usage_test/Cargo.toml
Normal file
22
tests/rust_usage_test/Cargo.toml
Normal file
@@ -0,0 +1,22 @@
|
||||
[package]
|
||||
name = "rust_usage_test"
|
||||
version = "0.1.0"
|
||||
authors = ["Robert Winslow <hello@rwinslow.com>", "FlatBuffers Maintainers"]
|
||||
|
||||
[dependencies]
|
||||
flatbuffers = { path = "../../rust/flatbuffers" }
|
||||
|
||||
[[bin]]
|
||||
name = "monster_example"
|
||||
path = "bin/monster_example.rs"
|
||||
|
||||
|
||||
[dev-dependencies]
|
||||
quickcheck = "0.6"
|
||||
# TODO(rw): look into moving to criterion.rs
|
||||
bencher = "0.1.5"
|
||||
|
||||
[[bench]]
|
||||
# setup for bencher
|
||||
name = "flatbuffers_benchmarks"
|
||||
harness = false
|
||||
218
tests/rust_usage_test/benches/flatbuffers_benchmarks.rs
Normal file
218
tests/rust_usage_test/benches/flatbuffers_benchmarks.rs
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/*
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* Copyright 2018 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#[macro_use]
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extern crate bencher;
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use bencher::Bencher;
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extern crate flatbuffers;
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#[path = "../../monster_test_generated.rs"]
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mod monster_test_generated;
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pub use monster_test_generated::my_game;
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fn traverse_canonical_buffer(bench: &mut Bencher) {
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let owned_data = {
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let mut builder = &mut flatbuffers::FlatBufferBuilder::new();
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create_serialized_example_with_generated_code(&mut builder, true);
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builder.finished_data().to_vec()
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};
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let data = &owned_data[..];
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let n = data.len() as u64;
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bench.iter(|| {
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traverse_serialized_example_with_generated_code(data);
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});
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bench.bytes = n;
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}
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fn create_canonical_buffer_then_reset(bench: &mut Bencher) {
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let mut builder = &mut flatbuffers::FlatBufferBuilder::new();
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// warmup
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create_serialized_example_with_generated_code(&mut builder, true);
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let n = builder.finished_data().len() as u64;
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builder.reset();
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bench.iter(|| {
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let _ = create_serialized_example_with_generated_code(&mut builder, true);
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builder.reset();
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});
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bench.bytes = n;
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}
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#[inline(always)]
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fn create_serialized_example_with_generated_code(builder: &mut flatbuffers::FlatBufferBuilder, finish: bool) -> usize{
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let s0 = builder.create_string("test1");
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let s1 = builder.create_string("test2");
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let t0_name = builder.create_string("Barney");
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let t1_name = builder.create_string("Fred");
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let t2_name = builder.create_string("Wilma");
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let t0 = my_game::example::Monster::create(builder, &my_game::example::MonsterArgs{
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hp: 1000,
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name: Some(t0_name),
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..Default::default()
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});
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let t1 = my_game::example::Monster::create(builder, &my_game::example::MonsterArgs{
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name: Some(t1_name),
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..Default::default()
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});
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let t2 = my_game::example::Monster::create(builder, &my_game::example::MonsterArgs{
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name: Some(t2_name),
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..Default::default()
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});
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let mon = {
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let name = builder.create_string("MyMonster");
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let fred_name = builder.create_string("Fred");
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let inventory = builder.create_vector_direct(&[0u8, 1, 2, 3, 4]);
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let test4 = builder.create_vector_direct(&[my_game::example::Test::new(10, 20),
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my_game::example::Test::new(30, 40)]);
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let pos = my_game::example::Vec3::new(1.0, 2.0, 3.0, 3.0, my_game::example::Color::Green, &my_game::example::Test::new(5i16, 6i8));
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let args = my_game::example::MonsterArgs{
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hp: 80,
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mana: 150,
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name: Some(name),
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pos: Some(&pos),
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test_type: my_game::example::Any::Monster,
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test: Some(my_game::example::Monster::create(builder, &my_game::example::MonsterArgs{
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name: Some(fred_name),
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..Default::default()
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}).as_union_value()),
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inventory: Some(inventory),
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test4: Some(test4),
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testarrayofstring: Some(builder.create_vector(&[s0, s1])),
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testarrayoftables: Some(builder.create_vector(&[t0, t1, t2])),
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..Default::default()
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};
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my_game::example::Monster::create(builder, &args)
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};
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if finish {
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my_game::example::finish_monster_buffer(builder, mon);
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}
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builder.finished_data().len()
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// make it do some work
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// if builder.finished_data().len() == 0 { panic!("bad benchmark"); }
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}
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#[inline(always)]
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fn blackbox<T>(t: T) -> T {
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// encapsulate this in case we need to turn it into a noop
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bencher::black_box(t)
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}
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#[inline(always)]
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fn traverse_serialized_example_with_generated_code(bytes: &[u8]) {
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let m = my_game::example::get_root_as_monster(bytes);
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blackbox(m.hp());
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blackbox(m.mana());
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blackbox(m.name());
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let pos = m.pos().unwrap();
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blackbox(pos.x());
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blackbox(pos.y());
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blackbox(pos.z());
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blackbox(pos.test1());
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blackbox(pos.test2());
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let pos_test3 = pos.test3();
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blackbox(pos_test3.a());
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blackbox(pos_test3.b());
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blackbox(m.test_type());
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let table2 = m.test().unwrap();
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let monster2 = my_game::example::Monster::init_from_table(table2);
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blackbox(monster2.name());
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blackbox(m.inventory());
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blackbox(m.test4());
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let testarrayoftables = m.testarrayoftables().unwrap();
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blackbox(testarrayoftables.get(0).hp());
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blackbox(testarrayoftables.get(0).name());
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blackbox(testarrayoftables.get(1).name());
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blackbox(testarrayoftables.get(2).name());
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let testarrayofstring = m.testarrayofstring().unwrap();
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blackbox(testarrayofstring.get(0));
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blackbox(testarrayofstring.get(1));
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}
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fn create_string_10(bench: &mut Bencher) {
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let builder = &mut flatbuffers::FlatBufferBuilder::new_with_capacity(1<<20);
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let mut i = 0;
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bench.iter(|| {
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builder.create_string("foobarbaz"); // zero-terminated -> 10 bytes
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i += 1;
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if i == 10000 {
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builder.reset();
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i = 0;
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}
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});
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bench.bytes = 10;
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}
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fn create_string_100(bench: &mut Bencher) {
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let builder = &mut flatbuffers::FlatBufferBuilder::new_with_capacity(1<<20);
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let s_owned = (0..99).map(|_| "x").collect::<String>();
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let s: &str = &s_owned;
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let mut i = 0;
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bench.iter(|| {
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builder.create_string(s); // zero-terminated -> 100 bytes
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i += 1;
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if i == 1000 {
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builder.reset();
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i = 0;
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}
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});
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bench.bytes = s.len() as u64;
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}
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fn create_byte_vector_100_naive(bench: &mut Bencher) {
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let builder = &mut flatbuffers::FlatBufferBuilder::new_with_capacity(1<<20);
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let v_owned = (0u8..100).map(|i| i).collect::<Vec<u8>>();
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let v: &[u8] = &v_owned;
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let mut i = 0;
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bench.iter(|| {
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builder.create_vector(v); // zero-terminated -> 100 bytes
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i += 1;
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if i == 10000 {
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builder.reset();
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i = 0;
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}
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});
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bench.bytes = v.len() as u64;
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}
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fn create_byte_vector_100_optimal(bench: &mut Bencher) {
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let builder = &mut flatbuffers::FlatBufferBuilder::new_with_capacity(1<<20);
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let v_owned = (0u8..100).map(|i| i).collect::<Vec<u8>>();
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let v: &[u8] = &v_owned;
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let mut i = 0;
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bench.iter(|| {
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builder.create_vector_direct(v);
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i += 1;
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if i == 10000 {
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builder.reset();
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i = 0;
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}
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});
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bench.bytes = v.len() as u64;
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}
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benchmark_group!(benches, create_byte_vector_100_naive, create_byte_vector_100_optimal, traverse_canonical_buffer, create_canonical_buffer_then_reset, create_string_10, create_string_100);
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benchmark_main!(benches);
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18
tests/rust_usage_test/bin/monster_example.rs
Normal file
18
tests/rust_usage_test/bin/monster_example.rs
Normal file
@@ -0,0 +1,18 @@
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extern crate flatbuffers;
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#[path = "../../monster_test_generated.rs"]
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mod monster_test_generated;
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pub use monster_test_generated::my_game;
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use std::io::Read;
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fn main() {
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let mut f = std::fs::File::open("../monsterdata_test.mon").unwrap();
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let mut buf = Vec::new();
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f.read_to_end(&mut buf).expect("file reading failed");
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let monster = my_game::example::get_root_as_monster(&buf[..]);
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println!("{}", monster.hp()); // `80`
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println!("{}", monster.mana()); // default value of `150`
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println!("{:?}", monster.name()); // Some("MyMonster")
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}
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2639
tests/rust_usage_test/tests/integration_test.rs
Normal file
2639
tests/rust_usage_test/tests/integration_test.rs
Normal file
File diff suppressed because it is too large
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