Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 987 insertions, 0 deletions

diff --git a/vendor/countme/.cargo-checksum.json b/vendor/countme/.cargo-checksum.json
new file mode 100644
index 000000000..21af6b7a5
--- /dev/null
+++ b/vendor/countme/.cargo-checksum.json
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diff --git a/vendor/countme/Cargo.lock b/vendor/countme/Cargo.lock
new file mode 100644
index 000000000..102108341
--- /dev/null
+++ b/vendor/countme/Cargo.lock
@@ -0,0 +1,168 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+ "once_cell",
+ "rustc-hash",
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+ "cfg-if",
+ "num_cpus",
+ "parking_lot",
+]
+
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+ "libc",
+]
+
+[[package]]
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+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-sys",
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+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
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diff --git a/vendor/countme/Cargo.toml b/vendor/countme/Cargo.toml
new file mode 100644
index 000000000..675dea03a
--- /dev/null
+++ b/vendor/countme/Cargo.toml
@@ -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"
+version = "3.0.1"
+authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
+exclude = [".github/", "bors.toml", "rustfmt.toml"]
+description = "Counts the number of live instances of types"
+categories = ["development-tools::profiling"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/matklad/countme"
+
+[[example]]
+name = "print_at_exit"
+required-features = ["print_at_exit"]
+
+[[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]
+version = "1.1"
+optional = true
+
+[features]
+enable = ["dashmap", "once_cell", "rustc-hash"]
+print_at_exit = ["enable"]
diff --git a/vendor/countme/LICENSE-APACHE b/vendor/countme/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/countme/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   any Contribution intentionally submitted for inclusion in the Work
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+   on Your own behalf and on Your sole responsibility, not on behalf
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+END OF TERMS AND CONDITIONS
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+APPENDIX: How to apply the Apache License to your work.
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diff --git a/vendor/countme/LICENSE-MIT b/vendor/countme/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/countme/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/countme/README.md b/vendor/countme/README.md
new file mode 100644
index 000000000..42f3c7ea8
--- /dev/null
+++ b/vendor/countme/README.md
@@ -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());
+```
diff --git a/vendor/countme/examples/bench.rs b/vendor/countme/examples/bench.rs
new file mode 100644
index 000000000..1f9cc967f
--- /dev/null
+++ b/vendor/countme/examples/bench.rs
@@ -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());
+}
diff --git a/vendor/countme/examples/bench_single_thread.rs b/vendor/countme/examples/bench_single_thread.rs
new file mode 100644
index 000000000..ac147f861
--- /dev/null
+++ b/vendor/countme/examples/bench_single_thread.rs
@@ -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());
+}
diff --git a/vendor/countme/examples/print_at_exit.rs b/vendor/countme/examples/print_at_exit.rs
new file mode 100644
index 000000000..fd51e2288
--- /dev/null
+++ b/vendor/countme/examples/print_at_exit.rs
@@ -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();
+}
diff --git a/vendor/countme/src/imp.rs b/vendor/countme/src/imp.rs
new file mode 100644
index 000000000..c1ace0da7
--- /dev/null
+++ b/vendor/countme/src/imp.rs
@@ -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
+    }
+}
diff --git a/vendor/countme/src/lib.rs b/vendor/countme/src/lib.rs
new file mode 100644
index 000000000..f89e63c5b
--- /dev/null
+++ b/vendor/countme/src/lib.rs
@@ -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(())
+    }
+}