Replace all uses of the heapsize crate with malloc_size_of.

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`.

components/atoms/Cargo.toml

@@ -10,7 +10,7 @@ build = "build.rs"
 path = "lib.rs"
 
 [dependencies]
-string_cache = {version = "0.6", features = ["heapsize"]}
+string_cache = {version = "0.6"}
 
 [build-dependencies]
 string_cache_codegen = "0.4"

components/canvas_traits/Cargo.toml

@@ -12,10 +12,10 @@ path = "lib.rs"
 [dependencies]
 cssparser = "0.22.0"
 euclid = "0.15"
-heapsize = "0.4"
-heapsize_derive = "0.1"
 ipc-channel = "0.9"
 lazy_static = "0.2"
+malloc_size_of = { path = "../malloc_size_of" }
+malloc_size_of_derive = { path = "../malloc_size_of_derive" }
 nonzero = {path = "../nonzero"}
 offscreen_gl_context = { version = "0.11", features = ["serde"] }
 serde = "1.0"

components/canvas_traits/canvas.rs

@@ -82,13 +82,13 @@ pub enum FromScriptMsg {
     SendPixels(IpcSender<Option<Vec<u8>>>),
 }
 
-#[derive(Clone, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Deserialize, MallocSizeOf, Serialize)]
 pub struct CanvasGradientStop {
     pub offset: f64,
     pub color: RGBA,
 }
 
-#[derive(Clone, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Deserialize, MallocSizeOf, Serialize)]
 pub struct LinearGradientStyle {
     pub x0: f64,
     pub y0: f64,
@@ -110,7 +110,7 @@ impl LinearGradientStyle {
     }
 }
 
-#[derive(Clone, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Deserialize, MallocSizeOf, Serialize)]
 pub struct RadialGradientStyle {
     pub x0: f64,
     pub y0: f64,
@@ -165,7 +165,7 @@ pub enum FillOrStrokeStyle {
     Surface(SurfaceStyle),
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum LineCapStyle {
     Butt = 0,
     Round = 1,
@@ -185,7 +185,7 @@ impl FromStr for LineCapStyle {
     }
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum LineJoinStyle {
     Round = 0,
     Bevel = 1,
@@ -227,7 +227,7 @@ impl FromStr for RepetitionStyle {
     }
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum CompositionStyle {
     SrcIn,
     SrcOut,
@@ -281,7 +281,7 @@ impl CompositionStyle {
     }
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum BlendingStyle {
     Multiply,
     Screen,
@@ -347,7 +347,7 @@ impl BlendingStyle {
     }
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, PartialEq, Serialize)]
 pub enum CompositionOrBlending {
     Composition(CompositionStyle),
     Blending(BlendingStyle),

components/canvas_traits/lib.rs

@@ -9,10 +9,10 @@
 
 extern crate cssparser;
 extern crate euclid;
-extern crate heapsize;
-#[macro_use] extern crate heapsize_derive;
 extern crate ipc_channel;
 #[macro_use] extern crate lazy_static;
+extern crate malloc_size_of;
+#[macro_use] extern crate malloc_size_of_derive;
 extern crate nonzero;
 extern crate offscreen_gl_context;
 #[macro_use] extern crate serde;

components/canvas_traits/webgl.rs

@@ -64,7 +64,7 @@ pub struct WebGLCreateContextResult {
     pub share_mode: WebGLContextShareMode,
 }
 
-#[derive(Clone, Copy, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Copy, Deserialize, MallocSizeOf, Serialize)]
 pub enum WebGLContextShareMode {
     /// Fast: a shared texture_id is used in WebRender.
     SharedTexture,
@@ -73,10 +73,10 @@ pub enum WebGLContextShareMode {
 }
 
 /// Helper struct to send WebGLCommands to a specific WebGLContext.
-#[derive(Clone, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Deserialize, MallocSizeOf, Serialize)]
 pub struct WebGLMsgSender {
     ctx_id: WebGLContextId,
-    #[ignore_heap_size_of = "channels are hard"]
+    #[ignore_malloc_size_of = "channels are hard"]
     sender: WebGLChan,
 }
 
@@ -313,8 +313,8 @@ macro_rules! define_resource_id {
             }
         }
 
-        impl ::heapsize::HeapSizeOf for $name {
-            fn heap_size_of_children(&self) -> usize { 0 }
+        impl ::malloc_size_of::MallocSizeOf for $name {
+            fn size_of(&self, _ops: &mut ::malloc_size_of::MallocSizeOfOps) -> usize { 0 }
         }
     }
 }
@@ -327,13 +327,10 @@ define_resource_id!(WebGLProgramId);
 define_resource_id!(WebGLShaderId);
 define_resource_id!(WebGLVertexArrayId);
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord)]
+#[derive(PartialEq, PartialOrd, Serialize)]
 pub struct WebGLContextId(pub usize);
 
-impl ::heapsize::HeapSizeOf for WebGLContextId {
-    fn heap_size_of_children(&self) -> usize { 0 }
-}
-
 #[derive(Clone, Copy, Debug, Deserialize, PartialEq, Serialize)]
 pub enum WebGLError {
     InvalidEnum,

components/devtools_traits/Cargo.toml

@@ -11,11 +11,11 @@ path = "lib.rs"
 
 [dependencies]
 bitflags = "0.7"
-heapsize = "0.4"
-heapsize_derive = "0.1"
 hyper = "0.10"
 hyper_serde = "0.7"
 ipc-channel = "0.9"
+malloc_size_of = { path = "../malloc_size_of" }
+malloc_size_of_derive = { path = "../malloc_size_of_derive" }
 msg = {path = "../msg"}
 serde = "1.0"
 servo_url = {path = "../url"}

components/devtools_traits/lib.rs

@@ -14,10 +14,10 @@
 
 #[macro_use]
 extern crate bitflags;
-extern crate heapsize;
-#[macro_use] extern crate heapsize_derive;
 extern crate hyper;
 extern crate ipc_channel;
+extern crate malloc_size_of;
+#[macro_use] extern crate malloc_size_of_derive;
 extern crate msg;
 #[macro_use] extern crate serde;
 extern crate servo_url;
@@ -40,7 +40,7 @@ pub struct DevtoolsPageInfo {
     pub url: ServoUrl,
 }
 
-#[derive(Clone, Debug, Deserialize, HeapSizeOf, Serialize)]
+#[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
 pub struct CSSError {
     pub filename: String,
     pub line: u32,
@@ -144,7 +144,7 @@ pub struct TimelineMarker {
     pub end_stack: Option<Vec<()>>,
 }
 
-#[derive(Clone, Debug, Deserialize, Eq, Hash, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize)]
 pub enum TimelineMarkerType {
     Reflow,
     DOMEvent,
@@ -355,5 +355,5 @@ impl PreciseTime {
     }
 }
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, HeapSizeOf, PartialEq, Serialize)]
+#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, PartialEq, Serialize)]
 pub struct WorkerId(pub u32);

components/dom_struct/lib.rs

@@ -15,7 +15,7 @@ pub fn dom_struct(args: TokenStream, input: TokenStream) -> TokenStream {
         panic!("#[dom_struct] takes no arguments");
     }
     let attributes = quote! {
-        #[derive(DenyPublicFields, DomObject, HeapSizeOf, JSTraceable)]
+        #[derive(DenyPublicFields, DomObject, JSTraceable, MallocSizeOf)]
         #[must_root]
         #[repr(C)]
     };

components/geometry/Cargo.toml

@@ -12,4 +12,5 @@ path = "lib.rs"
 [dependencies]
 app_units = "0.5"
 euclid = "0.15"
-heapsize = "0.4"
+malloc_size_of = { path = "../malloc_size_of" }
+malloc_size_of_derive = { path = "../malloc_size_of_derive" }

components/geometry/lib.rs

@@ -4,7 +4,8 @@
 
 extern crate app_units;
 extern crate euclid;
-#[macro_use] extern crate heapsize;
+extern crate malloc_size_of;
+#[macro_use] extern crate malloc_size_of_derive;
 
 use app_units::{Au, MAX_AU, MIN_AU};
 use euclid::{Point2D, Rect, Size2D};
@@ -24,11 +25,9 @@ use euclid::{Point2D, Rect, Size2D};
 ///
 /// The ratio between DeviceIndependentPixel and DevicePixel for a given display be found by calling
 /// `servo::windowing::WindowMethods::hidpi_factor`.
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, MallocSizeOf)]
 pub enum DeviceIndependentPixel {}
 
-known_heap_size!(0, DeviceIndependentPixel);
-
 // An Au is an "App Unit" and represents 1/60th of a CSS pixel.  It was
 // originally proposed in 2002 as a standard unit of measure in Gecko.
 // See https://bugzilla.mozilla.org/show_bug.cgi?id=177805 for more info.

components/gfx/Cargo.toml

@@ -21,12 +21,12 @@ fnv = "1.0"
 fontsan = {git = "https://github.com/servo/fontsan"}
 gfx_traits = {path = "../gfx_traits"}
 harfbuzz-sys = "0.1"
-heapsize = "0.4"
-heapsize_derive = "0.1"
 ipc-channel = "0.9"
 lazy_static = "0.2"
 libc = "0.2"
 log = "0.3.5"
+malloc_size_of = { path = "../malloc_size_of" }
+malloc_size_of_derive = { path = "../malloc_size_of_derive" }
 msg = {path = "../msg"}
 net_traits = {path = "../net_traits"}
 ordered-float = "0.4"