source: examples/gc_no_raii/src/internal/card_table.h @ 62315a0

ADTarm-ehast-experimentalcleanup-dtorsenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change on this file since 62315a0 was bf71cfd, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Moved up many directories in source

  • Property mode set to 100644
File size: 1.3 KB
Line 
1#pragma once
2
3#include "globals.h"
4#include "tools.h"
5
6static inline size_t card_of(void* address)
7{
8        size_t card = ( ((intptr_t)address) & CARDS_OFFSET_MASK ) >> CARDS_SIZE_EXP;
9        checkf(card < CARDS_COUNT, (const char*)"%lu %lu = (%lx & %lx) >> %lu\n", (size_t)CARDS_COUNT, (size_t)card, (size_t)address, (size_t)CARDS_OFFSET_MASK, (size_t)CARDS_SIZE_EXP);
10        check(card < CARDS_COUNT);
11        return card;
12}
13
14struct card_table_t
15{
16        size_t count;
17        void* cards_start[CARDS_COUNT];
18};
19
20static inline void ?{}(card_table_t* this)
21{
22        this->count = 0;
23}
24
25static inline void ^?{}(card_table_t* this)
26{
27
28}
29
30static inline void* object_at(card_table_t* const this, size_t card_number)
31{
32        return card_number < this->count ? this->cards_start[card_number] : NULL;
33}
34
35static inline void register_object(card_table_t* const this, void* object)
36{
37        size_t card = card_of(object);
38        if(card < this->count)
39        {
40                intptr_t card_obj_add = (intptr_t)object_at(this, card);
41                intptr_t obj_add = (intptr_t)object;
42                if(card_obj_add > obj_add)
43                {
44                        this->cards_start[card] = object;
45                }
46        }
47        else
48        {
49                check(card == this->count);
50                this->count++;
51                this->cards_start[card] = object;
52        }
53}
54
55static inline void reset(card_table_t* const this)
56{
57        for(size_t i = 0; i < this->count; i++)
58        {
59                this->cards_start[i] = NULL;
60        }
61        this->count = 0;
62}
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