Function tikv_jemalloc_sys::posix_memalign

source · 
pub unsafe extern "C" fn posix_memalign(
    ptr: *mut *mut c_void,
    alignment: size_t,
    size: size_t,
) -> c_int
Expand description

Allocates size bytes of memory at an address which is a multiple of alignment and is placed in *ptr.

If size is zero, then the value placed in *ptr is either null, or the behavior is as if the size were some nonzero value, except that the returned pointer shall not be used to access an object.

§Errors

On success, it returns zero. On error, the value of errno is not set, *ptr is not modified, and the return values can be:

  • EINVAL: the alignment argument was not a power-of-two or was not a multiple of mem::size_of::<*const c_void>().
  • ENOMEM: there was insufficient memory to fulfill the allocation request.

§Safety

The behavior is undefined if:

  • ptr is null.