blob: 452b0a0a7758d43dd4e9356ce8228377c99e0faa (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#ifndef GC_H
#define GC_H
#include "model.h"
#include <map>
const int GC_QUEUE_SIZE = 262144;
const size_t GC_CYC_THRESHOLD = GC_QUEUE_SIZE >> 1;
typedef std::map<EvalObj*, size_t> EvalObj2Int;
typedef std::set<EvalObj*> EvalObjSet;
#define GC_CYC_TRIGGER(ptr) \
do { \
if ((ptr) && (ptr)->is_container() && !visited.count(ptr)) \
visited.insert(*tail++ = (ptr)); \
} while (0)
#define GC_CYC_DEC(ptr) \
do { \
if ((ptr) && (ptr)->is_container()) \
static_cast<Container*>(ptr)->gc_refs--; \
} while (0)
class GarbageCollector {
struct PendingEntry {
EvalObj *obj;
PendingEntry *next;
PendingEntry(EvalObj *obj, PendingEntry *next);
};
EvalObj2Int mapping;
PendingEntry *pending_list;
size_t resolve_threshold;
public:
GarbageCollector();
void collect();
void cycle_resolve();
void force();
void expose(EvalObj *ptr);
void set_resolve_threshold(size_t new_thres);
size_t get_remaining();
EvalObj *attach(EvalObj *ptr);
};
extern GarbageCollector gc;
#endif
|