memb.h

Go to the documentation of this file.

#ifndef __MEMB_H__
#define __MEMB_H__

/*
 * Here we define a C preprocessing macro for concatenating to
 * strings. We need use two macros in order to allow concatenation of
 * two #defined macros.
 */
#define MEMB_CONCAT2(s1, s2) s1##s2
#define MEMB_CONCAT(s1, s2) MEMB_CONCAT2(s1, s2)

#define MEMB(name, structure, num) \
        static char MEMB_CONCAT(name,_memb_count)[num]; \
        static structure MEMB_CONCAT(name,_memb_mem)[num]; \
        static struct memb_blocks name = {sizeof(structure), num, \
                                          MEMB_CONCAT(name,_memb_count), \
                                          (void *)MEMB_CONCAT(name,_memb_mem)}

struct memb_blocks {
  unsigned short size;
  unsigned short num;
  char *count;
  void *mem;
};

void  memb_init(struct memb_blocks *m);

void *memb_alloc(struct memb_blocks *m);

char  memb_free(struct memb_blocks *m, void *ptr);

#endif /* __MEMB_H__ */