void *
vec_gc_o_reserve_1 (void *vec, int reserve, size_t vec_offset, size_t elt_size,
bool exact MEM_STAT_DECL)
{
struct vec_prefix *pfx = (struct vec_prefix *) vec;
unsigned alloc = calculate_allocation (pfx, reserve, exact);
size_t size;
if (!alloc)
{
if (pfx)
ggc_free (pfx);
return NULL;
}
/* Calculate the amount of space we want. */
size = vec_offset + alloc * elt_size;
/* Ask the allocator how much space it will really give us. */
size = ggc_round_alloc_size (size);
/* Adjust the number of slots accordingly. */
alloc = (size - vec_offset) / elt_size;
/* And finally, recalculate the amount of space we ask for. */
size = vec_offset + alloc * elt_size;
vec = ggc_realloc_stat (vec, size PASS_MEM_STAT);
((struct vec_prefix *)vec)->alloc = alloc;
if (!pfx)
((struct vec_prefix *)vec)->num = 0;
return vec;
}
void *
vec_gc_o_reserve (void *vec, int reserve, size_t vec_offset, size_t elt_size
MEM_STAT_DECL)
{
struct vec_prefix *pfx = vec;
unsigned alloc = alloc = calculate_allocation (pfx, reserve);
if (!alloc)
return NULL;
vec = ggc_realloc_stat (vec, vec_offset + alloc * elt_size PASS_MEM_STAT);
((struct vec_prefix *)vec)->alloc = alloc;
if (!pfx)
((struct vec_prefix *)vec)->num = 0;
return vec;
}
static void *
vec_gc_o_reserve_1 (void *vec, int reserve, size_t vec_offset, size_t elt_size,
bool exact MEM_STAT_DECL)
{
struct vec_prefix *pfx = (struct vec_prefix *) vec;
unsigned alloc = calculate_allocation (pfx, reserve, exact);
if (!alloc)
{
if (pfx)
ggc_free (pfx);
return NULL;
}
vec = ggc_realloc_stat (vec, vec_offset + alloc * elt_size PASS_MEM_STAT);
((struct vec_prefix *)vec)->alloc = alloc;
if (!pfx)
((struct vec_prefix *)vec)->num = 0;
return vec;
}
