Function tree_sitter::ffi::ts_set_allocator

source · 
pub unsafe extern "C" fn ts_set_allocator(
    new_malloc: Option<unsafe extern "C" fn(arg1: usize) -> *mut c_void>,
    new_calloc: Option<unsafe extern "C" fn(arg1: usize, arg2: usize) -> *mut c_void>,
    new_realloc: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: usize) -> *mut c_void>,
    new_free: Option<unsafe extern "C" fn(arg1: *mut c_void)>
)
Expand description

Set the allocation functions used by the library.

By default, Tree-sitter uses the standard libc allocation functions, but aborts the process when an allocation fails. This function lets you supply alternative allocation functions at runtime.

If you pass NULL for any parameter, Tree-sitter will switch back to its default implementation of that function.

If you call this function after the library has already been used, then you must ensure that either:

  1. All the existing objects have been freed.
  2. The new allocator shares its state with the old one, so it is capable of freeing memory that was allocated by the old allocator.