diff options
Diffstat (limited to 'src/pkg/runtime/malloc.h')
| -rw-r--r-- | src/pkg/runtime/malloc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/pkg/runtime/malloc.h b/src/pkg/runtime/malloc.h index 84e438d455..7583b4b4e3 100644 --- a/src/pkg/runtime/malloc.h +++ b/src/pkg/runtime/malloc.h @@ -158,6 +158,9 @@ struct MLink // SysAlloc obtains a large chunk of zeroed memory from the // operating system, typically on the order of a hundred kilobytes // or a megabyte. +// NOTE: SysAlloc returns OS-aligned memory, but the heap allocator +// may use larger alignment, so the caller must be careful to realign the +// memory obtained by SysAlloc. // // SysUnused notifies the operating system that the contents // of the memory region are no longer needed and can be reused @@ -173,6 +176,9 @@ struct MLink // If the pointer passed to it is non-nil, the caller wants the // reservation there, but SysReserve can still choose another // location if that one is unavailable. +// NOTE: SysReserve returns OS-aligned memory, but the heap allocator +// may use larger alignment, so the caller must be careful to realign the +// memory obtained by SysAlloc. // // SysMap maps previously reserved address space for use. // |