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Format component allocator #21373

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This commit is contained in:
kingdido999 2018-08-16 15:44:54 +08:00
parent 89ab110357
commit b25a01f492
1 changed files with 25 additions and 17 deletions
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42
components/allocator/lib.rs
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@ -9,7 +9,6 @@ static ALLOC: Allocator = Allocator;
pub use platform::*;
#[cfg(not(windows))]
mod platform {
extern crate jemalloc_sys as ffi;
@ -31,19 +30,31 @@ mod platform {
// The minimum alignment guaranteed by the architecture. This value is used to
// add fast paths for low alignment values.
#[cfg(all(any(target_arch = "arm",
target_arch = "mips",
target_arch = "mipsel",
target_arch = "powerpc")))]
#[cfg(
all(
any(
target_arch = "arm",
target_arch = "mips",
target_arch = "mipsel",
target_arch = "powerpc"
)
)
)]
const MIN_ALIGN: usize = 8;
#[cfg(all(any(target_arch = "x86",
target_arch = "x86_64",
target_arch = "aarch64",
target_arch = "powerpc64",
target_arch = "powerpc64le",
target_arch = "mips64",
target_arch = "s390x",
target_arch = "sparc64")))]
#[cfg(
all(
any(
target_arch = "x86",
target_arch = "x86_64",
target_arch = "aarch64",
target_arch = "powerpc64",
target_arch = "powerpc64le",
target_arch = "mips64",
target_arch = "s390x",
target_arch = "sparc64"
)
)
)]
const MIN_ALIGN: usize = 16;
fn layout_to_flags(align: usize, size: usize) -> c_int {
@ -84,10 +95,7 @@ mod platform {
}
#[inline]
unsafe fn realloc(&self,
ptr: *mut u8,
layout: Layout,
new_size: usize) -> *mut u8 {
unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
let flags = layout_to_flags(layout.align(), new_size);
ffi::rallocx(ptr as *mut _, new_size, flags) as *mut u8
}