Type Alias binder_ndk_sys::AParcel_stringAllocator
source · pub type AParcel_stringAllocator = Option<unsafe extern "C" fn(stringData: *mut c_void, length: i32, buffer: *mut *mut c_char) -> bool>;Expand description
This is called to allocate a buffer for a C-style string (null-terminated). The returned buffer should be at least length bytes. This includes space for a null terminator. For a string, length will always be strictly less than or equal to the maximum size that can be held in a size_t and will always be greater than 0. However, if a ‘null’ string is being read, length will be -1.
See also AParcel_readString.
If allocation fails, null should be returned.
\param stringData some external representation of a string \param length the length of the buffer needed to fill (including the null-terminator) \param buffer a buffer of size ‘length’ or null if allocation failed.
\return true if the allocation succeeded, false otherwise. If length is -1, a true return here means that a ‘null’ value (or equivalent) was successfully stored.
Aliased Type§
enum AParcel_stringAllocator {
None,
Some(unsafe extern "C" fn(_: *mut c_void, _: i32, _: *mut *mut i8) -> bool),
}