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Diffstat (limited to '')
-rw-r--r-- | library/std/src/sys/solid/alloc.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/library/std/src/sys/solid/alloc.rs b/library/std/src/sys/solid/alloc.rs new file mode 100644 index 000000000..d013bd876 --- /dev/null +++ b/library/std/src/sys/solid/alloc.rs @@ -0,0 +1,32 @@ +use crate::{ + alloc::{GlobalAlloc, Layout, System}, + sys::common::alloc::{realloc_fallback, MIN_ALIGN}, +}; + +#[stable(feature = "alloc_system_type", since = "1.28.0")] +unsafe impl GlobalAlloc for System { + #[inline] + unsafe fn alloc(&self, layout: Layout) -> *mut u8 { + if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { + unsafe { libc::malloc(layout.size()) as *mut u8 } + } else { + unsafe { libc::memalign(layout.align(), layout.size()) as *mut u8 } + } + } + + #[inline] + unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) { + unsafe { libc::free(ptr as *mut libc::c_void) } + } + + #[inline] + unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { + unsafe { + if layout.align() <= MIN_ALIGN && layout.align() <= new_size { + libc::realloc(ptr as *mut libc::c_void, new_size) as *mut u8 + } else { + realloc_fallback(self, ptr, layout, new_size) + } + } + } +} |