build(rust): vendor rnix parser crate
This commit was merged in pull request #57.
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alexion committed
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||||
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@@ -0,0 +1,6 @@
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{
|
||||
"git": {
|
||||
"sha1": "9e037c4293fb8ef6c1c632094349734955f06d89"
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},
|
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"path_in_vcs": ""
|
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}
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@@ -0,0 +1,3 @@
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{
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"rust-analyzer.cargo.features": ["enable", "print_at_exit"]
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}
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+110
@@ -0,0 +1,110 @@
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###############################################################################
|
||||
# @generated
|
||||
# DO NOT MODIFY: This file is auto-generated by a crate_universe tool. To
|
||||
# regenerate this file, run the following:
|
||||
#
|
||||
# bazel run @@//third_party:vendor_crates
|
||||
###############################################################################
|
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|
||||
load("@rules_rust//cargo:defs.bzl", "cargo_toml_env_vars")
|
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load("@rules_rust//rust:defs.bzl", "rust_library")
|
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|
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package(default_visibility = ["//visibility:public"])
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|
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cargo_toml_env_vars(
|
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name = "cargo_toml_env_vars",
|
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src = "Cargo.toml",
|
||||
)
|
||||
|
||||
rust_library(
|
||||
name = "countme",
|
||||
srcs = glob(
|
||||
include = ["**/*.rs"],
|
||||
allow_empty = False,
|
||||
),
|
||||
compile_data = glob(
|
||||
include = ["**"],
|
||||
allow_empty = True,
|
||||
exclude = [
|
||||
"**/* *",
|
||||
".tmp_git_root/**/*",
|
||||
"BUILD",
|
||||
"BUILD.bazel",
|
||||
"WORKSPACE",
|
||||
"WORKSPACE.bazel",
|
||||
],
|
||||
),
|
||||
crate_root = "src/lib.rs",
|
||||
edition = "2018",
|
||||
rustc_env_files = [
|
||||
":cargo_toml_env_vars",
|
||||
],
|
||||
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|
||||
"--cap-lints=allow",
|
||||
],
|
||||
tags = [
|
||||
"cargo-bazel",
|
||||
"crate-name=countme",
|
||||
"manual",
|
||||
"noclippy",
|
||||
"norustfmt",
|
||||
],
|
||||
target_compatible_with = select({
|
||||
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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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|
||||
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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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|
||||
"@rules_rust//rust/platform:wasm32-unknown-unknown": [],
|
||||
"@rules_rust//rust/platform:wasm32-wasip1": [],
|
||||
"@rules_rust//rust/platform:wasm32-wasip1-threads": [],
|
||||
"@rules_rust//rust/platform:wasm32-wasip2": [],
|
||||
"@rules_rust//rust/platform:x86_64-apple-darwin": [],
|
||||
"@rules_rust//rust/platform:x86_64-apple-ios": [],
|
||||
"@rules_rust//rust/platform:x86_64-apple-ios-macabi": [],
|
||||
"@rules_rust//rust/platform:x86_64-linux-android": [],
|
||||
"@rules_rust//rust/platform:x86_64-pc-windows-msvc": [],
|
||||
"@rules_rust//rust/platform:x86_64-unknown-freebsd": [],
|
||||
"@rules_rust//rust/platform:x86_64-unknown-fuchsia": [],
|
||||
"@rules_rust//rust/platform:x86_64-unknown-linux-gnu": [],
|
||||
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|
||||
"@rules_rust//rust/platform:x86_64-unknown-none": [],
|
||||
"@rules_rust//rust/platform:x86_64-unknown-uefi": [],
|
||||
"//conditions:default": ["@platforms//:incompatible"],
|
||||
}),
|
||||
version = "3.0.1",
|
||||
)
|
||||
+168
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|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
version = 3
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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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|
||||
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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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|
||||
+48
@@ -0,0 +1,48 @@
|
||||
# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
|
||||
#
|
||||
# When uploading crates to the registry Cargo will automatically
|
||||
# "normalize" Cargo.toml files for maximal compatibility
|
||||
# with all versions of Cargo and also rewrite `path` dependencies
|
||||
# to registry (e.g., crates.io) dependencies.
|
||||
#
|
||||
# If you are reading this file be aware that the original Cargo.toml
|
||||
# will likely look very different (and much more reasonable).
|
||||
# See Cargo.toml.orig for the original contents.
|
||||
|
||||
[package]
|
||||
edition = "2018"
|
||||
name = "countme"
|
||||
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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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|
||||
|
||||
[[example]]
|
||||
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|
||||
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|
||||
|
||||
[[example]]
|
||||
name = "bench"
|
||||
required-features = ["enable"]
|
||||
|
||||
[[example]]
|
||||
name = "bench_single_thread"
|
||||
required-features = ["enable"]
|
||||
[dependencies.dashmap]
|
||||
version = "5.0"
|
||||
optional = true
|
||||
|
||||
[dependencies.once_cell]
|
||||
version = "1.5"
|
||||
optional = true
|
||||
|
||||
[dependencies.rustc-hash]
|
||||
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|
||||
optional = true
|
||||
|
||||
[features]
|
||||
enable = ["dashmap", "once_cell", "rustc-hash"]
|
||||
print_at_exit = ["enable"]
|
||||
+35
@@ -0,0 +1,35 @@
|
||||
[package]
|
||||
name = "countme"
|
||||
description = "Counts the number of live instances of types"
|
||||
version = "3.0.1"
|
||||
categories = ["development-tools::profiling"]
|
||||
license = "MIT OR Apache-2.0"
|
||||
repository = "https://github.com/matklad/countme"
|
||||
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|
||||
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|
||||
|
||||
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|
||||
|
||||
[workspace]
|
||||
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|
||||
|
||||
[[example]]
|
||||
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|
||||
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|
||||
|
||||
[[example]]
|
||||
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|
||||
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|
||||
|
||||
[[example]]
|
||||
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|
||||
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|
||||
|
||||
[dependencies]
|
||||
dashmap = { version = "5.0", optional = true }
|
||||
once_cell = { version = "1.5", optional = true }
|
||||
rustc-hash = { version = "1.1", optional = true }
|
||||
|
||||
[features]
|
||||
enable = [ "dashmap", "once_cell", "rustc-hash" ]
|
||||
print_at_exit = ["enable"]
|
||||
+201
@@ -0,0 +1,201 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
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|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
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|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
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|
||||
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|
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|
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|
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"Work" shall mean the work of authorship, whether in Source or
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|
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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+23
@@ -0,0 +1,23 @@
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Permission is hereby granted, free of charge, to any
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publish, distribute, sublicense, and/or sell copies of
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The above copyright notice and this permission notice
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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||||
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||
DEALINGS IN THE SOFTWARE.
|
||||
+21
@@ -0,0 +1,21 @@
|
||||
A library to quickly get the live/total/max counts of allocated instances.
|
||||
|
||||
```rust
|
||||
#[derive(Default)]
|
||||
struct Widget {
|
||||
_c: countme::Count<Self>,
|
||||
...
|
||||
}
|
||||
|
||||
let w1 = Widget::default();
|
||||
let w2 = Widget::default();
|
||||
let w3 = Widget::default();
|
||||
drop(w1);
|
||||
|
||||
let counts = countme::get::<Widget>();
|
||||
assert_eq!(counts.live, 2);
|
||||
assert_eq!(counts.max_live, 3);
|
||||
assert_eq!(counts.total, 3);
|
||||
|
||||
eprintln!("{}", countme::get_all());
|
||||
```
|
||||
@@ -0,0 +1,69 @@
|
||||
use std::thread;
|
||||
|
||||
use countme::{get, Count};
|
||||
|
||||
#[derive(Default)]
|
||||
struct Foo {
|
||||
_c: Count<Self>,
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
struct Bar {
|
||||
_c: Count<Self>,
|
||||
_x: i32,
|
||||
}
|
||||
|
||||
mod deeply {
|
||||
pub(crate) mod nested {
|
||||
pub(crate) mod module {
|
||||
use countme::Count;
|
||||
|
||||
#[derive(Default)]
|
||||
pub(crate) struct Quux {
|
||||
_c: Count<Self>,
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
countme::enable(true);
|
||||
let t = std::time::Instant::now();
|
||||
let n = 5;
|
||||
let m = 1_000_000;
|
||||
|
||||
let mut threads = Vec::new();
|
||||
for _ in 0..n {
|
||||
threads.push(thread::spawn(move || {
|
||||
for _ in 0..m {
|
||||
Foo::default();
|
||||
}
|
||||
}));
|
||||
threads.push(thread::spawn(move || {
|
||||
let mut xs = Vec::with_capacity(m);
|
||||
for _ in 0..m {
|
||||
xs.push(Bar::default())
|
||||
}
|
||||
}));
|
||||
threads.push(thread::spawn(move || {
|
||||
for _ in 0..m {
|
||||
deeply::nested::module::Quux::default();
|
||||
}
|
||||
}));
|
||||
}
|
||||
for t in threads {
|
||||
t.join().unwrap();
|
||||
}
|
||||
|
||||
let foo = get::<Foo>();
|
||||
assert_eq!(foo.total, m * n);
|
||||
assert!(foo.max_live >= 1);
|
||||
assert_eq!(foo.live, 0);
|
||||
|
||||
let bar = get::<Bar>();
|
||||
assert_eq!(bar.total, m * n);
|
||||
assert!(bar.max_live >= m);
|
||||
assert_eq!(bar.live, 0);
|
||||
|
||||
println!("{:?}", t.elapsed());
|
||||
}
|
||||
@@ -0,0 +1,77 @@
|
||||
use countme::{get, Count};
|
||||
|
||||
#[derive(Default)]
|
||||
struct Foo {
|
||||
_c: Count<Self>,
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
struct Bar {
|
||||
_c: Count<Self>,
|
||||
_x: i32,
|
||||
}
|
||||
|
||||
mod deeply {
|
||||
pub(crate) mod nested {
|
||||
pub(crate) mod module {
|
||||
use countme::Count;
|
||||
|
||||
#[derive(Default)]
|
||||
pub(crate) struct Quux {
|
||||
_c: Count<Self>,
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
countme::enable(true);
|
||||
let t = std::time::Instant::now();
|
||||
let n = 6;
|
||||
let m = 2_000_000;
|
||||
|
||||
for _ in 0..n {
|
||||
for _ in 0..m {
|
||||
Foo::default();
|
||||
}
|
||||
|
||||
let mut xs = Vec::with_capacity(m);
|
||||
for _ in 0..m {
|
||||
xs.push(Bar::default())
|
||||
}
|
||||
|
||||
for _ in 0..m {
|
||||
deeply::nested::module::Quux::default();
|
||||
}
|
||||
|
||||
let fs = [
|
||||
|| drop(Foo::default()),
|
||||
|| drop(Bar::default()),
|
||||
|| drop(deeply::nested::module::Quux::default()),
|
||||
|| {
|
||||
#[derive(Default)]
|
||||
struct Local(Count<Self>);
|
||||
|
||||
Local::default();
|
||||
},
|
||||
];
|
||||
for i in 0..m {
|
||||
fs[i % 4]();
|
||||
}
|
||||
}
|
||||
|
||||
let foo = get::<Foo>();
|
||||
assert_eq!(foo.total, m * n + (m * n / 4));
|
||||
assert_eq!(foo.max_live, 1);
|
||||
assert_eq!(foo.live, 0);
|
||||
|
||||
let bar = get::<Bar>();
|
||||
assert_eq!(bar.total, m * n + (m * n / 4));
|
||||
|
||||
// FIXME: why +1? This seems like a bug
|
||||
// overreporting by 1 is not significant, but anyway
|
||||
assert_eq!(bar.max_live, m + 1);
|
||||
assert_eq!(bar.live, 0);
|
||||
|
||||
println!("{:?}", t.elapsed());
|
||||
}
|
||||
@@ -0,0 +1,11 @@
|
||||
#[derive(Default)]
|
||||
struct Widget {
|
||||
_t: countme::Count<Self>,
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let w1 = Widget::default();
|
||||
let _w2 = Widget::default();
|
||||
drop(w1);
|
||||
let _w3 = Widget::default();
|
||||
}
|
||||
+175
@@ -0,0 +1,175 @@
|
||||
use std::{
|
||||
any::{type_name, TypeId},
|
||||
cell::RefCell,
|
||||
collections::HashMap,
|
||||
hash::BuildHasherDefault,
|
||||
os::raw::c_int,
|
||||
sync::atomic::{AtomicBool, AtomicUsize, Ordering::Relaxed},
|
||||
sync::Arc,
|
||||
};
|
||||
|
||||
use dashmap::DashMap;
|
||||
use once_cell::sync::OnceCell;
|
||||
use rustc_hash::FxHasher;
|
||||
|
||||
use crate::{AllCounts, Counts};
|
||||
|
||||
static ENABLE: AtomicBool = AtomicBool::new(cfg!(feature = "print_at_exit"));
|
||||
|
||||
type GlobalStore = DashMap<TypeId, Arc<Store>, BuildHasherDefault<FxHasher>>;
|
||||
|
||||
#[inline]
|
||||
fn global_store() -> &'static GlobalStore {
|
||||
static MAP: OnceCell<GlobalStore> = OnceCell::new();
|
||||
MAP.get_or_init(|| {
|
||||
if cfg!(feature = "print_at_exit") {
|
||||
extern "C" {
|
||||
fn atexit(f: extern "C" fn()) -> c_int;
|
||||
}
|
||||
extern "C" fn print_at_exit() {
|
||||
eprint!("{}", get_all());
|
||||
}
|
||||
unsafe {
|
||||
atexit(print_at_exit);
|
||||
}
|
||||
}
|
||||
|
||||
GlobalStore::default()
|
||||
})
|
||||
}
|
||||
|
||||
thread_local! {
|
||||
static LOCAL: RefCell<HashMap<TypeId, Arc<Store>, BuildHasherDefault<FxHasher>>> = RefCell::default();
|
||||
}
|
||||
|
||||
pub(crate) fn enable(yes: bool) {
|
||||
ENABLE.store(yes, Relaxed);
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn enabled() -> bool {
|
||||
ENABLE.load(Relaxed)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub(crate) fn dec<T: 'static>() {
|
||||
if enabled() {
|
||||
do_dec(TypeId::of::<T>())
|
||||
}
|
||||
}
|
||||
#[inline(never)]
|
||||
fn do_dec(key: TypeId) {
|
||||
LOCAL.with(|local| {
|
||||
// Fast path: we have needed store in thread local map
|
||||
if let Some(store) = local.borrow().get(&key) {
|
||||
store.dec();
|
||||
return;
|
||||
}
|
||||
|
||||
let global = global_store();
|
||||
|
||||
// Slightly slower: we don't have needed store in our thread local map,
|
||||
// but some other thread has already initialized the needed store in the global map
|
||||
if let Some(store) = global.get(&key) {
|
||||
let store = store.value();
|
||||
local.borrow_mut().insert(key, Arc::clone(store));
|
||||
store.inc();
|
||||
return;
|
||||
}
|
||||
|
||||
// We only decrement counter after incremenrting it, so this line is unreachable
|
||||
})
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub(crate) fn inc<T: 'static>() {
|
||||
if enabled() {
|
||||
do_inc(TypeId::of::<T>(), type_name::<T>())
|
||||
}
|
||||
}
|
||||
#[inline(never)]
|
||||
fn do_inc(key: TypeId, name: &'static str) {
|
||||
LOCAL.with(|local| {
|
||||
// Fast path: we have needed store in thread local map
|
||||
if let Some(store) = local.borrow().get(&key) {
|
||||
store.inc();
|
||||
return;
|
||||
}
|
||||
|
||||
let global = global_store();
|
||||
|
||||
let copy = match global.get(&key) {
|
||||
// Slightly slower path: we don't have needed store in our thread local map,
|
||||
// but some other thread has already initialized the needed store in the global map
|
||||
Some(store) => {
|
||||
let store = store.value();
|
||||
store.inc();
|
||||
Arc::clone(store)
|
||||
}
|
||||
// Slow path: we are the first to initialize both global and local maps
|
||||
None => {
|
||||
let store = global
|
||||
.entry(key)
|
||||
.or_insert_with(|| Arc::new(Store { name, ..Store::default() }))
|
||||
.downgrade();
|
||||
let store = store.value();
|
||||
|
||||
store.inc();
|
||||
Arc::clone(store)
|
||||
}
|
||||
};
|
||||
|
||||
local.borrow_mut().insert(key, copy);
|
||||
});
|
||||
}
|
||||
|
||||
pub(crate) fn get<T: 'static>() -> Counts {
|
||||
do_get(TypeId::of::<T>())
|
||||
}
|
||||
fn do_get(key: TypeId) -> Counts {
|
||||
global_store().entry(key).or_default().value().read()
|
||||
}
|
||||
|
||||
pub(crate) fn get_all() -> AllCounts {
|
||||
let mut entries = global_store()
|
||||
.iter()
|
||||
.map(|entry| {
|
||||
let store = entry.value();
|
||||
(store.type_name(), store.read())
|
||||
})
|
||||
.collect::<Vec<_>>();
|
||||
entries.sort_by_key(|(name, _counts)| *name);
|
||||
AllCounts { entries }
|
||||
}
|
||||
|
||||
#[derive(Default)]
|
||||
struct Store {
|
||||
total: AtomicUsize,
|
||||
max_live: AtomicUsize,
|
||||
live: AtomicUsize,
|
||||
name: &'static str,
|
||||
}
|
||||
|
||||
impl Store {
|
||||
fn inc(&self) {
|
||||
self.total.fetch_add(1, Relaxed);
|
||||
let live = self.live.fetch_add(1, Relaxed) + 1;
|
||||
self.max_live.fetch_max(live, Relaxed);
|
||||
}
|
||||
|
||||
fn dec(&self) {
|
||||
self.live.fetch_sub(1, Relaxed);
|
||||
}
|
||||
|
||||
fn read(&self) -> Counts {
|
||||
Counts {
|
||||
total: self.total.load(Relaxed),
|
||||
max_live: self.max_live.load(Relaxed),
|
||||
live: self.live.load(Relaxed),
|
||||
}
|
||||
}
|
||||
|
||||
fn type_name(&self) -> &'static str {
|
||||
self.name
|
||||
}
|
||||
}
|
||||
+193
@@ -0,0 +1,193 @@
|
||||
//! A library to quickly get the live/total/max counts of allocated instances.
|
||||
//!
|
||||
//! # Example
|
||||
//!
|
||||
//! ```
|
||||
//! # if cfg!(not(feature = "enable")) { return; }
|
||||
//!
|
||||
//! #[derive(Default)]
|
||||
//! struct Widget {
|
||||
//! _c: countme::Count<Self>,
|
||||
//! }
|
||||
//!
|
||||
//! countme::enable(true);
|
||||
//!
|
||||
//! let w1 = Widget::default();
|
||||
//! let w2 = Widget::default();
|
||||
//! let w3 = Widget::default();
|
||||
//! drop(w1);
|
||||
//!
|
||||
//! let counts = countme::get::<Widget>();
|
||||
//! assert_eq!(counts.live, 2);
|
||||
//! assert_eq!(counts.max_live, 3);
|
||||
//! assert_eq!(counts.total, 3);
|
||||
//!
|
||||
//! eprintln!("{}", countme::get_all());
|
||||
//! ```
|
||||
//!
|
||||
//! # Configuration
|
||||
//!
|
||||
//! By default, the implementation compiles to no-ops. Therefore it is possible
|
||||
//! to include `Count` fields into library types.
|
||||
//!
|
||||
//! The `enable` cargo feature ungates the counting code. The feature can be
|
||||
//! enabled anywhere in the crate graph.
|
||||
//!
|
||||
//! At run-time, the counters are controlled with [`enable`] function. Counting
|
||||
//! is enabled by default if `print_at_exit` feature is enabled. Otherwise
|
||||
//! counting is disabled by default. Call `enable(true)` early in `main` to enable:
|
||||
//!
|
||||
//! ```rust
|
||||
//! fn main() {
|
||||
//! countme::enable(std::env::var("COUNTME").is_ok());
|
||||
//! }
|
||||
//! ```
|
||||
//!
|
||||
//! The code is optimized for the case where counting is not enabled at runtime
|
||||
//! (counting is a relaxed load and a branch to a function call).
|
||||
//!
|
||||
//! The `print_at_exit` Cargo feature uses `atexit` call to print final counts
|
||||
//! before the program exits (it also enables counting at runtime). Use it only
|
||||
//! when you can't modify the main to print counts -- `atexit` is not guaranteed
|
||||
//! to work with rust's runtime.
|
||||
#[cfg(feature = "enable")]
|
||||
mod imp;
|
||||
|
||||
use std::{fmt, marker::PhantomData};
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Eq, Default)]
|
||||
#[non_exhaustive]
|
||||
pub struct Counts {
|
||||
/// The total number of tokens created.
|
||||
pub total: usize,
|
||||
/// The historical maximum of the `live` count.
|
||||
pub max_live: usize,
|
||||
/// The number of tokens which were created, but are not destroyed yet.
|
||||
pub live: usize,
|
||||
}
|
||||
|
||||
/// Store this inside your struct as `_c: countme::Count<Self>`.
|
||||
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
|
||||
pub struct Count<T: 'static> {
|
||||
ghost: PhantomData<fn(T)>,
|
||||
}
|
||||
|
||||
impl<T: 'static> Default for Count<T> {
|
||||
#[inline]
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> Clone for Count<T> {
|
||||
#[inline]
|
||||
fn clone(&self) -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> Count<T> {
|
||||
/// Create new `Count`, incrementing the corresponding count.
|
||||
#[inline]
|
||||
pub fn new() -> Count<T> {
|
||||
#[cfg(feature = "enable")]
|
||||
imp::inc::<T>();
|
||||
Count { ghost: PhantomData }
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> Drop for Count<T> {
|
||||
#[inline]
|
||||
fn drop(&mut self) {
|
||||
#[cfg(feature = "enable")]
|
||||
imp::dec::<T>();
|
||||
}
|
||||
}
|
||||
|
||||
/// Enable or disable counting at runtime.
|
||||
///
|
||||
/// Counting is enabled by default if `print_at_exit` feature is enabled.
|
||||
/// Otherwise counting is disabled by default.
|
||||
///
|
||||
/// If neither `enable` nor `print_at_exit` features are enabled, then this function is noop.
|
||||
pub fn enable(_yes: bool) {
|
||||
#[cfg(feature = "enable")]
|
||||
imp::enable(_yes);
|
||||
}
|
||||
|
||||
/// Returns the counts for the `T` type.
|
||||
#[inline]
|
||||
pub fn get<T: 'static>() -> Counts {
|
||||
#[cfg(feature = "enable")]
|
||||
{
|
||||
return imp::get::<T>();
|
||||
}
|
||||
#[cfg(not(feature = "enable"))]
|
||||
{
|
||||
return Counts::default();
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns a collection of counts for all types.
|
||||
pub fn get_all() -> AllCounts {
|
||||
#[cfg(feature = "enable")]
|
||||
{
|
||||
return imp::get_all();
|
||||
}
|
||||
#[cfg(not(feature = "enable"))]
|
||||
{
|
||||
return AllCounts::default();
|
||||
}
|
||||
}
|
||||
|
||||
/// A collection of counts for all types.
|
||||
#[derive(Default, Clone, Debug)]
|
||||
pub struct AllCounts {
|
||||
entries: Vec<(&'static str, Counts)>,
|
||||
}
|
||||
|
||||
impl fmt::Display for AllCounts {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
fn sep(mut n: usize) -> String {
|
||||
let mut groups = Vec::new();
|
||||
while n >= 1000 {
|
||||
groups.push(format!("{:03}", n % 1000));
|
||||
n /= 1000;
|
||||
}
|
||||
groups.push(n.to_string());
|
||||
groups.reverse();
|
||||
groups.join("_")
|
||||
}
|
||||
|
||||
if self.entries.is_empty() {
|
||||
return if cfg!(feature = "enable") {
|
||||
writeln!(f, "all counts are zero")
|
||||
} else {
|
||||
writeln!(f, "counts are disabled")
|
||||
};
|
||||
}
|
||||
let max_width =
|
||||
self.entries.iter().map(|(name, _count)| name.chars().count()).max().unwrap_or(0);
|
||||
for (name, counts) in &self.entries {
|
||||
writeln!(
|
||||
f,
|
||||
"{:<max_width$} {:>12} {:>12} {:>12}",
|
||||
name,
|
||||
sep(counts.total),
|
||||
sep(counts.max_live),
|
||||
sep(counts.live),
|
||||
max_width = max_width
|
||||
)?;
|
||||
}
|
||||
writeln!(
|
||||
f,
|
||||
"{:<max_width$} {:>12} {:>12} {:>12}",
|
||||
"",
|
||||
"total",
|
||||
"max_live",
|
||||
"live",
|
||||
max_width = max_width
|
||||
)?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user