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4506f0d30c
Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`. `malloc_size_of` is better -- it handles various cases that `heapsize` does not -- so this patch changes Servo to use `malloc_size_of`. This patch makes the following changes to the `malloc_size_of` crate. - Adds `MallocSizeOf` trait implementations for numerous types, some built-in (e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`). - Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't support that operation. - For `HashSet`/`HashMap`, falls back to a computed estimate when `enclosing_size_of_op` isn't available. - Adds an extern "C" `malloc_size_of` function that does the actual heap measurement; this is based on the same functions from the `heapsize` crate. This patch makes the following changes elsewhere. - Converts all the uses of `heapsize` to instead use `malloc_size_of`. - Disables the "heapsize"/"heap_size" feature for the external crates that provide it. - Removes the `HeapSizeOf` implementation from `hashglobe`. - Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of` doesn't derive those types, unlike `heapsize`.
26 lines
960 B
Rust
26 lines
960 B
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Generic types for CSS handling of specified and computed values of
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//! [`position`](https://drafts.csswg.org/css-backgrounds-3/#position)
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/// A generic type for representing a CSS [position](https://drafts.csswg.org/css-values/#position).
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#[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug)]
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#[derive(MallocSizeOf, PartialEq, ToAnimatedZero, ToComputedValue)]
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pub struct Position<H, V> {
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/// The horizontal component of position.
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pub horizontal: H,
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/// The vertical component of position.
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pub vertical: V,
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}
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impl<H, V> Position<H, V> {
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/// Returns a new position.
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pub fn new(horizontal: H, vertical: V) -> Self {
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Self {
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horizontal: horizontal,
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vertical: vertical,
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}
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}
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}
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