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Auto merge of #15629 - heycam:variables-leak, r=bholley,emilio

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stylo: Destroy static Variables struct on shutdown.

Fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1340457.

r? @emilio

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This commit is contained in:
bors-servo 2017-02-19 21:12:57 -08:00 • committed by GitHub
commit 58aa6ce7ae
2 changed files with 23 additions and 11 deletions
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27
components/style/properties/gecko.mako.rs
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@ -26,6 +26,7 @@ use gecko_bindings::bindings::Gecko_CopyFontFamilyFrom;
use gecko_bindings::bindings::Gecko_CopyImageValueFrom;
use gecko_bindings::bindings::Gecko_CopyListStyleImageFrom;
use gecko_bindings::bindings::Gecko_CopyListStyleTypeFrom;
use gecko_bindings::bindings::Gecko_Destroy_nsStyleVariables;
use gecko_bindings::bindings::Gecko_EnsureImageLayersLength;
use gecko_bindings::bindings::Gecko_FontFamilyList_AppendGeneric;
use gecko_bindings::bindings::Gecko_FontFamilyList_AppendNamed;
@ -3147,19 +3148,25 @@ ${impl_style_struct(style_struct)}
${define_ffi_struct_accessor(style_struct)}
% endfor
lazy_static! {
static ref EMPTY_VARIABLES_STRUCT: nsStyleVariables = {
unsafe {
let mut variables: nsStyleVariables = unsafe { zeroed() };
Gecko_Construct_nsStyleVariables(&mut variables);
variables
}
};
}
// This is only accessed from the Gecko main thread.
static mut EMPTY_VARIABLES_STRUCT: Option<nsStyleVariables> = None;
#[no_mangle]
#[allow(non_snake_case)]
pub unsafe extern "C" fn Servo_GetStyleVariables(_cv: ServoComputedValuesBorrowedOrNull)
-> *const nsStyleVariables {
&*EMPTY_VARIABLES_STRUCT
EMPTY_VARIABLES_STRUCT.as_ref().unwrap()
}
pub fn initialize() {
unsafe {
EMPTY_VARIABLES_STRUCT = Some(zeroed());
Gecko_Construct_nsStyleVariables(EMPTY_VARIABLES_STRUCT.as_mut().unwrap());
}
}
pub fn shutdown() {
unsafe {
EMPTY_VARIABLES_STRUCT.take().as_mut().map(|v| Gecko_Destroy_nsStyleVariables(v));
}
}