95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "refuse.h"
|
|
|
|
#ifndef __unused
|
|
#define __unused __attribute__((unused))
|
|
#endif
|
|
|
|
static inline refhdr_t* _refuse_header(void* ptr)
|
|
{
|
|
return (refhdr_t*)((char*)ptr - sizeof(refhdr_t));
|
|
}
|
|
|
|
void refuse_init(refuse_t* refuse)
|
|
{
|
|
refuse->dec = refdeque_alloc();
|
|
refuse->mod = refdeque_alloc();
|
|
}
|
|
|
|
void refuse_destroy(refuse_t* refuse)
|
|
{
|
|
refdeque_release(refuse->dec);
|
|
refuse->dec = NULL;
|
|
refdeque_release(refuse->mod);
|
|
refuse->mod = NULL;
|
|
}
|
|
|
|
void refuse_reconcile(refuse_t* refuse)
|
|
{
|
|
refhdr_t* h = refdeque_pop_front(refuse->mod);
|
|
while(h != NULL) {
|
|
if(h->new) {
|
|
h->new = 0;
|
|
}
|
|
|
|
if(h->dirty) {
|
|
h->dirty = 0;
|
|
} else {
|
|
h->retainCount++;
|
|
}
|
|
h = refdeque_pop_front(refuse->mod);
|
|
}
|
|
|
|
refhdr_t* hdr = refdeque_pop_front(refuse->dec);
|
|
while(hdr != NULL) {
|
|
hdr->retainCount--;
|
|
if(hdr->retainCount == 0) {
|
|
// Iterate children, delete children
|
|
free(hdr);
|
|
hdr = NULL;
|
|
}
|
|
hdr = refdeque_pop_front(refuse->dec);
|
|
}
|
|
}
|
|
|
|
void* refuse_alloc(__unused refuse_t* refuse, size_t size)
|
|
{
|
|
refhdr_t* o = (refhdr_t*)calloc(sizeof(refhdr_t) + size, 1);
|
|
char* ptr = (char*)o + sizeof(refhdr_t);
|
|
|
|
o->new = 1;
|
|
o->dirty = 0;
|
|
o->retainCount = 0;
|
|
|
|
return ptr;
|
|
}
|
|
|
|
void refuse_set_dirty(__unused refuse_t* refuse, void* ptr)
|
|
{
|
|
refhdr_t* hdr = _refuse_header(ptr);
|
|
hdr->dirty = 1;
|
|
}
|
|
|
|
void refuse_retain(refuse_t* refuse, void* ptr)
|
|
{
|
|
refhdr_t* o;
|
|
char* cptr = (char*)ptr;
|
|
cptr -= sizeof(refhdr_t);
|
|
o = (refhdr_t*)cptr;
|
|
|
|
if(o->dirty) {
|
|
return;
|
|
}
|
|
|
|
refdeque_push_back(refuse->mod, o);
|
|
}
|
|
|
|
void refuse_release(refuse_t* refuse, void* ptr)
|
|
{
|
|
refhdr_t* hdr = _refuse_header(ptr);
|
|
refdeque_push_back(refuse->dec, hdr);
|
|
}
|