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Change the interface of placement new to take a tydesc as part of Issue #2831.

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This commit is contained in:
Michael Sullivan 2012-07-09 17:23:13 -07:00
parent a7897b3ef3
commit 120773b2a7
7 changed files with 42 additions and 27 deletions
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12
src/libstd/arena.rs
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@ -31,11 +31,11 @@ impl arena for arena {
head = chunk(uint::next_power_of_two(new_min_chunk_size + 1u));
self.chunks = @cons(head, self.chunks);
ret self.alloc(n_bytes, align);
ret self.alloc_inner(n_bytes, align);
}
#[inline(always)]
fn alloc(n_bytes: uint, align: uint) -> *() {
fn alloc_inner(n_bytes: uint, align: uint) -> *() {
let alignm1 = align - 1u;
let mut head = list::head(self.chunks);
@ -52,5 +52,13 @@ impl arena for arena {
ret unsafe::reinterpret_cast(p);
}
}
#[inline(always)]
fn alloc(tydesc: *()) -> *() {
unsafe {
let tydesc = tydesc as *sys::type_desc;
self.alloc_inner((*tydesc).size, (*tydesc).align)
}
}
}