/* bufnew • allocation of a new buffer */
struct buf *
#ifndef TRACK_BUFFER_DEBUG
bufnew(size_t unit) {
#else
bufnew_(size_t unit, const char *file, int line) {
struct buf_debug_data *bdd;
#endif
struct buf *ret;
ret = malloc(sizeof (struct buf));
if (ret) {
#ifdef BUFFER_STATS
buffer_stat_nb += 1;
#endif
#ifdef TRACK_BUFFERS
parr_push(&all_buffers, ret);
#endif
ret->data = 0;
ret->size = ret->asize = 0;
ret->ref = 1;
ret->unit = unit; }
#ifdef TRACK_BUFFER_DEBUG
if (ret) {
bdd = arr_item(&all_buffers, arr_newitem(&all_buffers));
bdd->buf = ret;
bdd->dupped = 0;
bdd->ctime = time(0);
bdd->file = file;
bdd->line = line; }
return ret; }
#else
return ret; }
/* new_work_buffer • get a new working buffer from the stack or create one */
static struct buf *
new_work_buffer(struct render *rndr) {
struct buf *ret = 0;
if (rndr->work.size < rndr->work.asize) {
ret = rndr->work.item[rndr->work.size ++];
ret->size = 0; }
else {
ret = bufnew(WORK_UNIT);
parr_push(&rndr->work, ret); }
return ret; }
static inline struct buf *
rndr_newbuf(struct render *rndr)
{
struct buf *work = NULL;
if (rndr->work.size < rndr->work.asize) {
work = rndr->work.item[rndr->work.size++];
work->size = 0;
} else {
work = bufnew(WORK_UNIT);
parr_push(&rndr->work, work);
}
return work;
}
/* bufdup • buffer duplication */
struct buf *
#ifndef TRACK_BUFFER_DEBUG
bufdup(const struct buf *src, size_t dupunit) {
#else
bufdup_(const struct buf *src, size_t dupunit, const char *file, int line) {
struct buf_debug_data *bdd;
#endif
size_t blocks;
struct buf *ret;
if (src == 0) return 0;
ret = malloc(sizeof (struct buf));
if (ret == 0) return 0;
ret->unit = dupunit;
ret->size = src->size;
ret->ref = 1;
if (!src->size) {
#ifdef BUFFER_STATS
buffer_stat_nb += 1;
#endif
ret->asize = 0;
ret->data = 0;
return ret; }
blocks = (src->size + dupunit - 1) / dupunit;
ret->asize = blocks * dupunit;
ret->data = malloc(ret->asize);
if (ret->data == 0) {
free(ret);
return 0; }
memcpy(ret->data, src->data, src->size);
#ifdef BUFFER_STATS
buffer_stat_nb += 1;
buffer_stat_alloc_bytes += ret->asize;
#endif
#ifdef TRACK_BUFFERS
parr_push(&all_buffers, ret);
#endif
#ifdef TRACK_BUFFER_DEBUG
bdd = arr_item(&all_buffers, arr_newitem(&all_buffers));
bdd->buf = ret;
bdd->dupped = 1;
bdd->ctime = time(0);
bdd->file = file;
bdd->line = line;
return ret; }
#else
return ret; }
