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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`.
63 lines
2.3 KiB
Rust
63 lines
2.3 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::bindings::cell::DomRefCell;
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use dom::bindings::codegen::Bindings::VRDisplayCapabilitiesBinding;
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use dom::bindings::codegen::Bindings::VRDisplayCapabilitiesBinding::VRDisplayCapabilitiesMethods;
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::root::DomRoot;
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use dom::globalscope::GlobalScope;
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use dom_struct::dom_struct;
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use webvr_traits::WebVRDisplayCapabilities;
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#[dom_struct]
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pub struct VRDisplayCapabilities {
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reflector_: Reflector,
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#[ignore_malloc_size_of = "Defined in rust-webvr"]
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capabilities: DomRefCell<WebVRDisplayCapabilities>
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}
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unsafe_no_jsmanaged_fields!(WebVRDisplayCapabilities);
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impl VRDisplayCapabilities {
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fn new_inherited(capabilities: WebVRDisplayCapabilities) -> VRDisplayCapabilities {
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VRDisplayCapabilities {
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reflector_: Reflector::new(),
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capabilities: DomRefCell::new(capabilities)
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}
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}
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pub fn new(capabilities: WebVRDisplayCapabilities, global: &GlobalScope) -> DomRoot<VRDisplayCapabilities> {
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reflect_dom_object(Box::new(VRDisplayCapabilities::new_inherited(capabilities)),
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global,
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VRDisplayCapabilitiesBinding::Wrap)
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}
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}
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impl VRDisplayCapabilitiesMethods for VRDisplayCapabilities {
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// https://w3c.github.io/webvr/#dom-vrdisplaycapabilities-hasposition
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fn HasPosition(&self) -> bool {
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self.capabilities.borrow().has_position
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}
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// https://w3c.github.io/webvr/#dom-vrdisplaycapabilities-hasorientation
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fn HasOrientation(&self) -> bool {
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self.capabilities.borrow().has_orientation
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}
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// https://w3c.github.io/webvr/#dom-vrdisplaycapabilities-hasexternaldisplay
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fn HasExternalDisplay(&self) -> bool {
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self.capabilities.borrow().has_external_display
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}
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// https://w3c.github.io/webvr/#dom-vrdisplaycapabilities-canpresent
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fn CanPresent(&self) -> bool {
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self.capabilities.borrow().can_present
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}
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// https://w3c.github.io/webvr/#dom-vrdisplaycapabilities-maxlayers
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fn MaxLayers(&self) -> u32 {
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if self.CanPresent() { 1 } else { 0 }
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}
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}
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