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android has posix_memalign for API 16+ since NDK r10d

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See: http://developer.android.com/ndk/downloads/revision_history.html

Also, use `libc`'s `posix_memalign`.
This commit is contained in:
Tamir Duberstein
2015-12-28 20:04:20 -05:00
parent 7cffc9b195
commit 5657eefcd8
2 changed files with 7 additions and 27 deletions
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32
src/liballoc_system/lib.rs
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@@ -75,37 +75,17 @@ mod imp {
use libc;
use MIN_ALIGN;
extern "C" {
// Apparently android doesn't have posix_memalign
#[cfg(target_os = "android")]
fn memalign(align: libc::size_t, size: libc::size_t) -> *mut libc::c_void;
#[cfg(not(target_os = "android"))]
fn posix_memalign(memptr: *mut *mut libc::c_void,
align: libc::size_t,
size: libc::size_t)
-> libc::c_int;
}
pub unsafe fn allocate(size: usize, align: usize) -> *mut u8 {
if align <= MIN_ALIGN {
libc::malloc(size as libc::size_t) as *mut u8
} else {
#[cfg(target_os = "android")]
unsafe fn more_aligned_malloc(size: usize, align: usize) -> *mut u8 {
memalign(align as libc::size_t, size as libc::size_t) as *mut u8
let mut out = ptr::null_mut();
let ret = libc::posix_memalign(&mut out, align as libc::size_t, size as libc::size_t);
if ret != 0 {
ptr::null_mut()
} else {
out as *mut u8
}
#[cfg(not(target_os = "android"))]
unsafe fn more_aligned_malloc(size: usize, align: usize) -> *mut u8 {
let mut out = ptr::null_mut();
let ret = posix_memalign(&mut out, align as libc::size_t, size as libc::size_t);
if ret != 0 {
ptr::null_mut()
} else {
out as *mut u8
}
}
more_aligned_malloc(size, align)
}
}