#ifndef PRISM_CUSTOM_ALLOCATOR_H
#define PRISM_CUSTOM_ALLOCATOR_H

#if defined(MRC_TARGET_MRUBY)
  #include "mruby.h"
  extern mrb_state *global_mrb;

  #define xmalloc(size)             mrb_malloc(global_mrb, size)
  #define xcalloc(nmemb,size)       mrb_calloc(global_mrb, nmemb, size)
  #define xrealloc(ptr,size)        mrb_realloc(global_mrb, ptr, size)
  #define xfree(ptr)                mrb_free(global_mrb, ptr)

  #define mrc_malloc(c,size)        mrb_malloc(c->mrb, size)
  #define mrc_calloc(c,nmemb,size)  mrb_calloc(c->mrb, nmemb, size)
  #define mrc_realloc(c,ptr,size)   mrb_realloc(c->mrb, ptr, size)
  #define mrc_free(c,ptr)           mrb_free(c->mrb, ptr)
#elif defined(MRC_TARGET_MRUBYC)
  #include "mrubyc.h"
  #if defined(MRBC_ALLOC_LIBC)
    #define xmalloc(size)             malloc(size)
    #define xcalloc(nmemb,size)       calloc(nmemb, size)
    #define xrealloc(nmemb,size)      realloc(nmemb, size)
    #define xfree(ptr)                free(ptr)

    #define mrc_malloc(c,size)        malloc(size)
    #define mrc_calloc(c,nmemb,size)  calloc(nmemb, size)
    #define mrc_realloc(c,ptr,size)   realloc(ptr, size)
    #define mrc_free(c,ptr)           free(ptr)
  #else
    #define xmalloc(size)             mrbc_raw_alloc(size)
    #define xcalloc(nmemb,size)       mrbc_raw_calloc(nmemb, size)
    #define xrealloc(nmemb,size)      mrc_raw_realloc(nmemb, size)
    #define xfree(ptr)                mrc_raw_free(ptr)

    #define mrc_malloc(c,size)        mrbc_raw_alloc(size)
    #define mrc_calloc(c,nmemb,size)  mrbc_raw_calloc(nmemb, size)
    #define mrc_realloc(c,ptr,size)   mrc_raw_realloc(ptr, size)
    #define mrc_free(c,ptr)           mrc_raw_free(ptr)

    static inline void mrc_raw_free(void *ptr)
    {
      /* mrbc_raw_free() warns when ptr=NULL but it should be allowed in C99 */
      if (ptr == NULL) return;
      mrbc_raw_free(ptr);
    }

    static inline void*
    mrc_raw_realloc(void *ptr, unsigned int size)
    {
      /* mrbc_raw_realloc() fails when ptr=NULL but it should be allowed in C99 */
      if (ptr == NULL) {
        return mrbc_raw_alloc(size);
      } else {
        return mrbc_raw_realloc(ptr, size);
      }
    }
  #endif
#else

  // for picorbc
  #define mrc_malloc(c,size)        malloc(size)
  #define mrc_calloc(c,nmemb,size)  calloc(nmemb, size)
  #define mrc_realloc(c,ptr,size)   realloc(ptr, size)
  #define mrc_free(c,ptr)           free(ptr)
  #define xmalloc(size)             malloc(size)
  #define xcalloc(nmemb,size)       calloc(nmemb, size)
  #define xrealloc(ptr,size)        realloc(ptr, size)
  #define xfree(ptr)                free(ptr)

#endif

#endif