ArenaAllocatorReset

Description

Rewind every chunk’s bump cursor and clear the most-recent allocation snapshot, without releasing the chunks themselves. Existing kernel mappings are kept so subsequent allocations can reuse them without going back to mmap.

Parameters

Success

Function returns. Every previously-handed-out pointer is invalid; last_ptr / last_size are cleared so resize-the-most-recent-bump has no rollback target.

Failure

No action when self is NULL.

Usage example (Cross-references)

    }
    
    void ArenaAllocatorReset(ArenaAllocator *self) {
        if (!self) {
            return;

        bool           ok         = (a != NULL) && (b != NULL);
    
        ArenaAllocatorReset(&arena);
        u8 *c = (u8 *)AllocatorAlloc(alloc_base, 4096, true);
        ok    = ok && (c != NULL) && (c == a); // Reset reuses the first chunk.