diff options
Diffstat (limited to 'src/liballoc_jemalloc/lib.rs')
| -rw-r--r-- | src/liballoc_jemalloc/lib.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/liballoc_jemalloc/lib.rs b/src/liballoc_jemalloc/lib.rs index 83cc1ef09c2..288531cb5b2 100644 --- a/src/liballoc_jemalloc/lib.rs +++ b/src/liballoc_jemalloc/lib.rs @@ -40,6 +40,10 @@ mod imp { fn mallocx(size: size_t, flags: c_int) -> *mut c_void; #[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios", target_os = "dragonfly", target_os = "windows", target_env = "musl"), + link_name = "je_calloc")] + fn calloc(size: size_t, flags: c_int) -> *mut c_void; + #[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios", + target_os = "dragonfly", target_os = "windows", target_env = "musl"), link_name = "je_rallocx")] fn rallocx(ptr: *mut c_void, size: size_t, flags: c_int) -> *mut c_void; #[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios", @@ -56,6 +60,8 @@ mod imp { fn nallocx(size: size_t, flags: c_int) -> size_t; } + const MALLOCX_ZERO: c_int = 0x40; + // The minimum alignment guaranteed by the architecture. This value is used to // add fast paths for low alignment values. In practice, the alignment is a // constant at the call site and the branch will be optimized out. @@ -92,6 +98,16 @@ mod imp { } #[no_mangle] + pub extern "C" fn __rust_allocate_zeroed(size: usize, align: usize) -> *mut u8 { + if align <= MIN_ALIGN { + unsafe { calloc(size as size_t, 1) as *mut u8 } + } else { + let flags = align_to_flags(align) | MALLOCX_ZERO; + unsafe { mallocx(size as size_t, flags) as *mut u8 } + } + } + + #[no_mangle] pub extern "C" fn __rust_reallocate(ptr: *mut u8, _old_size: usize, size: usize, @@ -136,6 +152,11 @@ mod imp { } #[no_mangle] + pub extern "C" fn __rust_allocate_zeroed(_size: usize, _align: usize) -> *mut u8 { + bogus() + } + + #[no_mangle] pub extern "C" fn __rust_reallocate(_ptr: *mut u8, _old_size: usize, _size: usize, |