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#ifndef ALLOCATE_H
#define ALLOCATE_H
struct allocation_blob {
struct allocation_blob *next;
unsigned int left, offset;
unsigned char data[];
};
struct allocator_struct {
const char *name;
struct allocation_blob *blobs;
unsigned int alignment;
unsigned int chunking;
void *freelist;
/* statistics */
unsigned int allocations, total_bytes, useful_bytes;
};
extern void protect_allocations(struct allocator_struct *desc);
extern void drop_all_allocations(struct allocator_struct *desc);
extern void *allocate(struct allocator_struct *desc, unsigned int size);
extern void free_one_entry(struct allocator_struct *desc, void *entry);
extern void show_allocations(struct allocator_struct *);
#define __DECLARE_ALLOCATOR(type, x) \
extern type *__alloc_##x(int); \
extern void __free_##x(type *); \
extern void show_##x##_alloc(void); \
extern void clear_##x##_alloc(void); \
extern void protect_##x##_alloc(void);
#define DECLARE_ALLOCATOR(x) __DECLARE_ALLOCATOR(struct x, x)
#define __DO_ALLOCATOR(type, objsize, objalign, objname, x) \
static struct allocator_struct x##_allocator = { \
.name = objname, \
.alignment = objalign, \
.chunking = CHUNK }; \
type *__alloc_##x(int extra) \
{ \
return allocate(&x##_allocator, objsize+extra); \
} \
void __free_##x(type *entry) \
{ \
free_one_entry(&x##_allocator, entry); \
} \
void show_##x##_alloc(void) \
{ \
show_allocations(&x##_allocator); \
} \
void clear_##x##_alloc(void) \
{ \
drop_all_allocations(&x##_allocator); \
} \
void protect_##x##_alloc(void) \
{ \
protect_allocations(&x##_allocator); \
}
#define __ALLOCATOR(t, n, x) \
__DO_ALLOCATOR(t, sizeof(t), __alignof__(t), n, x)
#define ALLOCATOR(x, n) __ALLOCATOR(struct x, n, x)
DECLARE_ALLOCATOR(ident);
DECLARE_ALLOCATOR(token);
DECLARE_ALLOCATOR(context);
DECLARE_ALLOCATOR(symbol);
DECLARE_ALLOCATOR(expression);
DECLARE_ALLOCATOR(statement);
DECLARE_ALLOCATOR(string);
DECLARE_ALLOCATOR(scope);
__DECLARE_ALLOCATOR(void, bytes);
DECLARE_ALLOCATOR(basic_block);
DECLARE_ALLOCATOR(entrypoint);
DECLARE_ALLOCATOR(instruction);
DECLARE_ALLOCATOR(multijmp);
DECLARE_ALLOCATOR(phi);
DECLARE_ALLOCATOR(pseudo);
#endif
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