33 lines
912 B
Rust
33 lines
912 B
Rust
#![allow(unsafe_op_in_unsafe_fn)]
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use crate::alloc::{GlobalAlloc, Layout, System};
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use crate::ptr;
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use crate::sys::hermit::abi;
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#[stable(feature = "alloc_system_type", since = "1.28.0")]
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unsafe impl GlobalAlloc for System {
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#[inline]
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unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
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abi::malloc(layout.size(), layout.align())
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}
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unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
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let addr = abi::malloc(layout.size(), layout.align());
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if !addr.is_null() {
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ptr::write_bytes(addr, 0x00, layout.size());
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}
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addr
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}
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#[inline]
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unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
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abi::free(ptr, layout.size(), layout.align())
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}
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#[inline]
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unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
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abi::realloc(ptr, layout.size(), layout.align(), new_size)
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}
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}
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