text: #ifndef OPA_MALLOC_H
  #define OPA_MALLOC_H
  
  #include <stddef.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  void *opa_malloc(size_t size);
  void opa_free(void *ptr);
  void *opa_realloc(void *ptr, size_t size);
  
  unsigned int opa_heap_ptr_get(void);
  unsigned int opa_heap_top_get(void);
  void opa_heap_ptr_set(unsigned int);
  void opa_heap_top_set(unsigned int);
  
  void opa_malloc_init(unsigned int);
  
  void opa_malloc_init_test(void);
  
  void *opa_builtin_cache_get(size_t i);
  void opa_builtin_cache_set(size_t i, void *p);
  
  void opa_heap_compact(void);
  size_t opa_heap_free_blocks(void);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  