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de7ade69d5
Source-Repo: https://github.com/servo/servo Source-Revision: 2f80a3bac66ae3d0a84b5f4317ebfb537c5c6e2c
49 lines
2.1 KiB
Rust
49 lines
2.1 KiB
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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use dom::characterdata::CharacterData;
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use dom::element::Element;
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use dom::eventtarget::EventTarget;
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use dom::htmldivelement::HTMLDivElement;
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use dom::htmlelement::HTMLElement;
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use dom::htmlspanelement::HTMLSpanElement;
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use dom::node::Node;
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use dom::text::Text;
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use std::mem::size_of;
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// Macro so that we can stringify type names
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// I'd really prefer the tests themselves to be run at plugin time,
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// however rustc::middle doesn't have access to the full type data
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macro_rules! sizeof_checker (
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($testname: ident, $t:ty, $known_size:expr) => (
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#[test]
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fn $testname() {
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let new = size_of::<$t>();
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let old = $known_size;
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if new < old {
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panic!("Your changes have decreased the stack size of commonly used DOM struct {} from {} to {}. \
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Good work! Please update the size in script/tests.rs",
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stringify!($t), old, new)
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} else if new > old {
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panic!("Your changes have increased the stack size of commonly used DOM struct {} from {} to {}. \
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These structs are present in large quantities in the DOM, and increasing the size \
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may dramatically affect our memory footprint. Please consider choosing a design which \
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avoids this increase. If you feel that the increase is necessary, \
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update to the new size in script/tests.rs.",
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stringify!($t), old, new)
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}
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});
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)
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// Update the sizes here
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sizeof_checker!(size_event_target, EventTarget, 56)
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sizeof_checker!(size_node, Node, 304)
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sizeof_checker!(size_element, Element, 448)
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sizeof_checker!(size_htmlelement, HTMLElement, 448)
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sizeof_checker!(size_div, HTMLDivElement, 448)
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sizeof_checker!(size_span, HTMLSpanElement, 448)
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sizeof_checker!(size_text, Text, 336)
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sizeof_checker!(size_characterdata, CharacterData, 336)
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