forked from M-Labs/libfringe
23 lines
843 B
Rust
23 lines
843 B
Rust
// This file is part of libfringe, a low-level green threading library.
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// Copyright (c) edef <edef@edef.eu>
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// See the LICENSE file included in this distribution.
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//! Traits for stacks.
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/// A trait for objects that hold ownership of a stack.
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pub trait Stack {
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/// Returns the top of the stack.
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/// On all modern architectures, the stack grows downwards,
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/// so this is the highest address.
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fn top(&self) -> *mut u8;
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/// Returns the bottom of the stack.
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/// On all modern architectures, the stack grows downwards,
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/// so this is the lowest address.
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fn limit(&self) -> *mut u8;
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}
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/// A marker trait for `Stack` objects with a guard page.
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///
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/// A guarded stack must guarantee that any access of data at addresses `limit()` to
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/// `limit().offset(4096)` will abnormally terminate the program.
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pub unsafe trait GuardedStack {}
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