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Added void* buffer util functions

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This commit is contained in:
Justin Ethier 2015-10-28 22:56:42 -04:00
parent 91e52dda62
commit 60d55e8974
2 changed files with 60 additions and 46 deletions
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101
gc.c
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@ -326,56 +326,34 @@ void gc_thr_add_to_move_buffer(gc_thread_data *d, int *alloci, object obj)
(*alloci)++;
}
// Generic buffer functions
void **vpbuffer_realloc(void **buf, int *len)
{
return realloc(buf, (*len) * sizeof(void *));
}
void **vpbuffer_add(void **buf, int *len, int i, void *obj)
{
if (i == *len) {
*len *= 2;
buf = vpbuffer_realloc(buf, len);
}
buf[i] = obj;
return buf;
}
void vpbuffer_free(void **buf)
{
free(buf);
}
// void gc_init()
// {
// }
// END heap definitions
// int main(int argc, char **argv) {
// int i;
// size_t freed = 0, max_freed = 0;
// gc_heap *h = gc_heap_create(8 * 1024 * 1024, 0, 0);
// void *obj1 = gc_alloc(h, sizeof(cons_type));
// void *obj2 = gc_alloc(h, sizeof(cons_type));
// void *objI = gc_alloc(h, sizeof(integer_type));
//
// for (i = 0; i < 1000000; i++) {
// gc_alloc(h, sizeof(integer_type));
// gc_alloc(h, sizeof(integer_type));
// }
//
// // Build up an object graph to test collection...
// ((integer_type *)objI)->hdr.mark = 0;
// ((integer_type *)objI)->tag = integer_tag;
// ((integer_type *)objI)->value = 42;
//
// ((list)obj2)->hdr.mark = 0;
// ((list)obj2)->tag = cons_tag;
// ((list)obj2)->cons_car = objI;
// ((list)obj2)->cons_cdr = NULL;
//
// ((list)obj1)->hdr.mark = 0;
// ((list)obj1)->tag = cons_tag;
// ((list)obj1)->cons_car = obj2;
// ((list)obj1)->cons_cdr = NULL;
//
// printf("(heap: %p size: %d)", h, (unsigned int)gc_heap_total_size(h));
// gc_mark(h, obj1);
// max_freed = gc_sweep(h, &freed);
// printf("done, freed = %d, max_freed = %d\n", freed, max_freed);
// for (i = 0; i < 10; i++) {
// gc_alloc(h, sizeof(integer_type));
// gc_alloc(h, sizeof(integer_type));
// }
// printf("(heap: %p size: %d)", h, (unsigned int)gc_heap_total_size(h));
// gc_mark(h, obj1);
// max_freed = gc_sweep(h, &freed);
// printf("done, freed = %d, max_freed = %d\n", freed, max_freed);
//
// return 0;
// }
/*
Rough plan for how to implement new GC algorithm. We need to do this in
phases in order to have any hope of getting everything working. Let's prove
@ -481,8 +459,8 @@ static int gc_status_col;
static int gc_stage;
// Does not need sync, only used by collector thread
static void **mark_stack;
static int mark_stack_len;
static void **mark_stack = NULL;
static int mark_stack_len = 128;
// GC functions called by the Mutator threads
@ -521,3 +499,34 @@ void gc_mark_gray(object obj)
// GC Collection cycle
// END tri-color marking section
//// Unit testing:
//int main(int argc, char **argv) {
// int a = 1, b = 2, c = 3, i;
// void **buf = NULL;
// int size = 1;
//
// buf = vpbuffer_realloc(buf, &size);
// printf("buf = %p, size = %d\n", buf, size);
// buf = vpbuffer_add(buf, &size, 0, &a);
// printf("buf = %p, size = %d\n", buf, size);
// buf = vpbuffer_add(buf, &size, 1, &b);
// printf("buf = %p, size = %d\n", buf, size);
// buf = vpbuffer_add(buf, &size, 2, &c);
// printf("buf = %p, size = %d\n", buf, size);
// buf = vpbuffer_add(buf, &size, 3, &a);
// printf("buf = %p, size = %d\n", buf, size);
// buf = vpbuffer_add(buf, &size, 4, &b);
// printf("buf = %p, size = %d\n", buf, size);
// for (i = 5; i < 20; i++) {
// buf = vpbuffer_add(buf, &size, i, &c);
// }
//
// for (i = 0; i < 20; i++){
// printf("%d\n", *((int *) buf[i]));
// }
// vpbuffer_free(buf);
// printf("buf = %p, size = %d\n", buf, size);
// return 0;
//}
//

5
include/cyclone/types.h
View file

@ -73,6 +73,11 @@ struct gc_header_type_t {
#define gc_word_align(n) gc_align((n), 2)
#define gc_heap_align(n) gc_align(n, 5)
/* Utility functions */
void **vpbuffer_realloc(void **buf, int *len);
void **vpbuffer_add(void **buf, int *len, int i, void *obj);
void vpbuffer_free(void **buf);
/* GC prototypes */
gc_heap *gc_heap_create(size_t size, size_t max_size, size_t chunk_size);
int gc_grow_heap(gc_heap *h, size_t size, size_t chunk_size);