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kbtree: eliminate unneccesary heap allocation

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This commit is contained in:
Björn Linse
2016-08-28 13:01:33 +02:00
parent 53cf88c27b
commit 14e19b8aaf
3 changed files with 49 additions and 62 deletions
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57
src/nvim/buffer.c
View File

@@ -5201,11 +5201,8 @@ int bufhl_add_hl(buf_T *buf,
// no highlight group or invalid line, just return src_id
return src_id;
}
if (!buf->b_bufhl_info) {
buf->b_bufhl_info = kb_init(bufhl);
}
BufhlLine *lineinfo = bufhl_tree_ref(buf->b_bufhl_info, lnum, true);
BufhlLine *lineinfo = bufhl_tree_ref(&buf->b_bufhl_info, lnum, true);
bufhl_hl_item_T *hlentry = kv_pushp(lineinfo->items);
hlentry->src_id = src_id;
@@ -5229,25 +5226,23 @@ int bufhl_add_hl(buf_T *buf,
void bufhl_clear_line_range(buf_T *buf,
int src_id,
linenr_T line_start,
linenr_T line_end) {
if (!buf->b_bufhl_info) {
return;
}
linenr_T line_end)
{
linenr_T first_changed = MAXLNUM, last_changed = -1;
kbitr_t(bufhl) itr;
BufhlLine *l, t = {line_start};
if (!kb_itr_get(bufhl, buf->b_bufhl_info, &t, &itr)) {
kb_itr_next(bufhl, buf->b_bufhl_info, &itr);
if (!kb_itr_get(bufhl, &buf->b_bufhl_info, &t, &itr)) {
kb_itr_next(bufhl, &buf->b_bufhl_info, &itr);
}
for (; kb_itr_valid(&itr); kb_itr_next(bufhl, buf->b_bufhl_info, &itr)) {
for (; kb_itr_valid(&itr); kb_itr_next(bufhl, &buf->b_bufhl_info, &itr)) {
l = kb_itr_key(&itr);
linenr_T line = l->line;
if (line > line_end) {
break;
}
if (line_start <= line && line <= line_end) {
BufhlLineStatus status = bufhl_clear_line(buf->b_bufhl_info, src_id, line);
BufhlLineStatus status = bufhl_clear_line(l, src_id, line);
if (status != kBLSUnchanged) {
if (line > last_changed) {
last_changed = line;
@@ -5257,7 +5252,8 @@ void bufhl_clear_line_range(buf_T *buf,
}
}
if (status == kBLSDeleted) {
kb_del_itr(bufhl, buf->b_bufhl_info, &itr);
kb_del_itr(bufhl, &buf->b_bufhl_info, &itr);
xfree(l);
}
}
}
@@ -5273,10 +5269,9 @@ void bufhl_clear_line_range(buf_T *buf,
/// @param bufhl_info The highlight info for the buffer
/// @param src_id Highlight source group to clear, or -1 to clear all groups.
/// @param lnum Linenr where the highlight should be cleared
static BufhlLineStatus bufhl_clear_line(bufhl_info_T *bufhl_info, int src_id,
static BufhlLineStatus bufhl_clear_line(BufhlLine *lineinfo, int src_id,
linenr_T lnum)
{
BufhlLine *lineinfo = bufhl_tree_ref(bufhl_info, lnum, false);
size_t oldsize = kv_size(lineinfo->items);
if (src_id < 0) {
kv_size(lineinfo->items) = 0;
@@ -5303,12 +5298,8 @@ static BufhlLineStatus bufhl_clear_line(bufhl_info_T *bufhl_info, int src_id,
/// Remove all highlights and free the highlight data
void bufhl_clear_all(buf_T *buf)
{
if (!buf->b_bufhl_info) {
return;
}
bufhl_clear_line_range(buf, -1, 1, MAXLNUM);
kb_destroy(bufhl, buf->b_bufhl_info);
buf->b_bufhl_info = NULL;
kb_destroy(bufhl, (&buf->b_bufhl_info));
}
/// Adjust a placed highlight for inserted/deleted lines.
@@ -5316,24 +5307,23 @@ void bufhl_mark_adjust(buf_T* buf,
linenr_T line1,
linenr_T line2,
long amount,
long amount_after) {
if (!buf->b_bufhl_info) {
return;
}
long amount_after)
{
// XXX: does not support move
// we need to detect this case and
kbitr_t(bufhl) itr;
BufhlLine *l, t = {line1};
if (!kb_itr_get(bufhl, buf->b_bufhl_info, &t, &itr)) {
kb_itr_next(bufhl, buf->b_bufhl_info, &itr);
if (!kb_itr_get(bufhl, &buf->b_bufhl_info, &t, &itr)) {
kb_itr_next(bufhl, &buf->b_bufhl_info, &itr);
}
for (; kb_itr_valid(&itr); kb_itr_next(bufhl, buf->b_bufhl_info, &itr)) {
for (; kb_itr_valid(&itr); kb_itr_next(bufhl, &buf->b_bufhl_info, &itr)) {
l = kb_itr_key(&itr);
if (l->line >= line1 && l->line <= line2) {
if (amount == MAXLNUM) {
if (bufhl_clear_line(buf->b_bufhl_info, -1, l->line) == kBLSDeleted) {
kb_del_itr(bufhl, buf->b_bufhl_info, &itr);
if (bufhl_clear_line(l, -1, l->line) == kBLSDeleted) {
kb_del_itr(bufhl, &buf->b_bufhl_info, &itr);
xfree(l);
} else {
assert(false);
}
@@ -5356,12 +5346,9 @@ void bufhl_mark_adjust(buf_T* buf,
/// @param lnum The line number
/// @param[out] info The highligts for the line
/// @return true if there was highlights to display
bool bufhl_start_line(buf_T *buf, linenr_T lnum, bufhl_lineinfo_T *info) {
if (!buf->b_bufhl_info) {
return false;
}
BufhlLine *lineinfo = bufhl_tree_ref(buf->b_bufhl_info, lnum, false);
bool bufhl_start_line(buf_T *buf, linenr_T lnum, bufhl_lineinfo_T *info)
{
BufhlLine *lineinfo = bufhl_tree_ref(&buf->b_bufhl_info, lnum, false);
if (!lineinfo) {
return false;
}

2
src/nvim/buffer_defs.h
View File

@@ -760,7 +760,7 @@ struct file_buffer {
int b_mapped_ctrl_c; // modes where CTRL-C is mapped
bufhl_info_T *b_bufhl_info; // buffer stored highlights
bufhl_info_T b_bufhl_info; // buffer stored highlights
};
/*

52
src/nvim/lib/kbtree.h
View File

@@ -40,18 +40,19 @@
#define __KB_PTR(btr, x) (x->ptr)
#define __KB_TREE_T(name,key_t,T) \
typedef struct kbnode_##name##_s kbnode_##name##_t; \
struct kbnode_##name##_s { \
int32_t n; \
bool is_internal; \
key_t key[2*T-1]; \
kbnode_##name##_t *ptr[0]; \
} ; \
\
typedef struct { \
kbnode_##name##_t *root; \
int n_keys, n_nodes; \
} kbtree_##name##_t; \
typedef struct kbnode_##name##_s kbnode_##name##_t; \
struct kbnode_##name##_s { \
int32_t n; \
bool is_internal; \
key_t key[2*T-1]; \
kbnode_##name##_t *ptr[0]; \
} ; \
\
typedef struct { \
kbnode_##name##_t *root; \
int n_keys, n_nodes; \
} kbtree_##name##_t; \
\
typedef struct { \
kbnode_##name##_t *x; \
int i; \
@@ -61,21 +62,11 @@ struct kbnode_##name##_s { \
} kbitr_##name##_t; \
#define __KB_INIT(name, key_t, kbnode_t, T, ILEN) \
static inline kbtree_##name##_t *kb_init_##name() \
{ \
kbtree_##name##_t *b; \
b = (kbtree_##name##_t*)xcalloc(1, sizeof(kbtree_##name##_t)); \
b->root = (kbnode_t*)xcalloc(1, ILEN); \
++b->n_nodes; \
return b; \
} \
#define __kb_destroy(kbnode_t,b) do { \
int i; \
unsigned int max = 8; \
kbnode_t *x, **top, **stack = 0; \
if (b) { \
if (b->root) { \
top = stack = (kbnode_t**)xcalloc(max, sizeof(kbnode_t*)); \
*top++ = (b)->root; \
while (top != stack) { \
@@ -93,7 +84,7 @@ struct kbnode_##name##_s { \
xfree(x); \
} \
} \
xfree(b); xfree(stack); \
xfree(stack); \
} while (0)
#define __KB_GET_AUX1(name, key_t, kbnode_t, __cmp) \
@@ -115,6 +106,9 @@ struct kbnode_##name##_s { \
#define __KB_GET(name, key_t, kbnode_t) \
static key_t *kb_getp_##name(kbtree_##name##_t *b, const key_t * __restrict k) \
{ \
if (!b->root) { \
return 0; \
} \
int i, r = 0; \
kbnode_t *x = b->root; \
while (x) { \
@@ -133,6 +127,9 @@ struct kbnode_##name##_s { \
#define __KB_INTERVAL(name, key_t, kbnode_t) \
static void kb_intervalp_##name(kbtree_##name##_t *b, const key_t * __restrict k, key_t **lower, key_t **upper) \
{ \
if (!b->root) { \
return; \
} \
int i, r = 0; \
kbnode_t *x = b->root; \
*lower = *upper = 0; \
@@ -194,6 +191,10 @@ struct kbnode_##name##_s { \
} \
static key_t *kb_putp_##name(kbtree_##name##_t *b, const key_t * __restrict k) \
{ \
if (!b->root) { \
b->root = (kbnode_t*)xcalloc(1, ILEN); \
++b->n_nodes; \
} \
kbnode_t *r, *s; \
++b->n_keys; \
r = b->root; \
@@ -358,6 +359,7 @@ struct kbnode_##name##_s { \
} \
static int kb_itr_getp_##name(kbtree_##name##_t *b, const key_t * __restrict k, kbitr_##name##_t *itr) \
{ \
if (b->n_keys == 0) return 0; \
int i, r = 0; \
itr->p = itr->stack; \
itr->p->x = b->root; \
@@ -388,7 +390,6 @@ struct kbnode_##name##_s { \
#define KBTREE_INIT_IMPL(name, key_t, kbnode_t, __cmp, T, ILEN) \
__KB_TREE_T(name, key_t, T) \
__KB_INIT(name, key_t, kbnode_t, T, ILEN) \
__KB_GET_AUX1(name, key_t, kbnode_t, __cmp) \
__KB_GET(name, key_t, kbnode_t) \
__KB_INTERVAL(name, key_t, kbnode_t) \
@@ -400,7 +401,6 @@ struct kbnode_##name##_s { \
#define kbtree_t(name) kbtree_##name##_t
#define kbitr_t(name) kbitr_##name##_t
#define kb_init(name) kb_init_##name()
#define kb_destroy(name, b) __kb_destroy(kbnode_##name##_t, b)
#define kb_get(name, b, k) kb_get_##name(b, k)
#define kb_put(name, b, k) kb_put_##name(b, k)