Skip to content

Add a feature to make spin use optional #8

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jan 8, 2018
Merged

Add a feature to make spin use optional #8

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 6 additions & 1 deletion Cargo.toml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -11,5 +11,10 @@ repository = "https://github.com/phil-opp/linked-list-allocator"
documentation = "https://docs.rs/crate/linked_list_allocator"
homepage = "http://os.phil-opp.com/kernel-heap.html#a-better-allocator"

[dependencies]
[features]
default = ["use_spin"]
use_spin = ["spin"]

[dependencies.spin]
spin = "0.4.5"
optional = true
7 changes: 7 additions & 0 deletions src/lib.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,12 +9,15 @@ extern crate alloc;
#[macro_use]
extern crate std;

#[cfg(feature = "use_spin")]
extern crate spin;

use hole::{Hole, HoleList};
use core::mem;
#[cfg(feature = "use_spin")]
use core::ops::Deref;
use alloc::allocator::{Alloc, Layout, AllocErr};
#[cfg(feature = "use_spin")]
use spin::Mutex;

mod hole;
Expand Down Expand Up @@ -138,8 +141,10 @@ unsafe impl Alloc for Heap {
}
}

#[cfg(feature = "use_spin")]
pub struct LockedHeap(Mutex<Heap>);

#[cfg(feature = "use_spin")]
impl LockedHeap {
/// Creates an empty heap. All allocate calls will return `None`.
pub const fn empty() -> LockedHeap {
Expand All @@ -159,6 +164,7 @@ impl LockedHeap {
}
}

#[cfg(feature = "use_spin")]
impl Deref for LockedHeap {
type Target = Mutex<Heap>;

Expand All @@ -167,6 +173,7 @@ impl Deref for LockedHeap {
}
}

#[cfg(feature = "use_spin")]
unsafe impl<'a> Alloc for &'a LockedHeap {
unsafe fn alloc(&mut self, layout: Layout) -> Result<*mut u8, AllocErr> {
self.0.lock().allocate_first_fit(layout)
Expand Down