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Reduce memory usage in low level tree, by storing dir info separately.

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This commit is contained in:
Vreixo Formoso
2007-12-29 18:30:59 +01:00
parent 4b8db2f274
commit 7e66fe43ce
6 changed files with 76 additions and 60 deletions
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72
src/ecma119_tree.c
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@ -96,20 +96,29 @@ int create_dir(Ecma119Image *img, IsoDir *iso, Ecma119Node **node)
{
int ret;
Ecma119Node **children;
struct ecma119_dir_info *dir_info;
children = calloc(1, sizeof(void*) * iso->nchildren);
if (children == NULL) {
return ISO_MEM_ERROR;
}
dir_info = calloc(1, sizeof(struct ecma119_dir_info));
if (dir_info == NULL) {
free(children);
return ISO_MEM_ERROR;
}
ret = create_ecma119_node(img, (IsoNode*)iso, node);
if (ret < 0) {
free(children);
free(dir_info);
return ret;
}
(*node)->type = ECMA119_DIR;
(*node)->info.dir.nchildren = 0;
(*node)->info.dir.children = children;
(*node)->info.dir = dir_info;
(*node)->info.dir->nchildren = 0;
(*node)->info.dir->children = children;
return ISO_SUCCESS;
}
@ -191,10 +200,11 @@ void ecma119_node_free(Ecma119Node *node)
}
if (node->type == ECMA119_DIR) {
int i;
for (i = 0; i < node->info.dir.nchildren; i++) {
ecma119_node_free(node->info.dir.children[i]);
for (i = 0; i < node->info.dir->nchildren; i++) {
ecma119_node_free(node->info.dir->children[i]);
}
free(node->info.dir.children);
free(node->info.dir->children);
free(node->info.dir);
}
free(node->iso_name);
iso_node_unref(node->node);
@ -288,8 +298,8 @@ int create_tree(Ecma119Image *image, IsoNode *iso, Ecma119Node **tree,
break;
} else if (cret == ISO_SUCCESS) {
/* add child to this node */
int nchildren = node->info.dir.nchildren++;
node->info.dir.children[nchildren] = child;
int nchildren = node->info.dir->nchildren++;
node->info.dir->children[nchildren] = child;
child->parent = node;
}
pos = pos->next;
@ -329,11 +339,11 @@ void sort_tree(Ecma119Node *root)
{
size_t i;
qsort(root->info.dir.children, root->info.dir.nchildren, sizeof(void*),
qsort(root->info.dir->children, root->info.dir->nchildren, sizeof(void*),
cmp_node_name);
for (i = 0; i < root->info.dir.nchildren; i++) {
if (root->info.dir.children[i]->type == ECMA119_DIR)
sort_tree(root->info.dir.children[i]);
for (i = 0; i < root->info.dir->nchildren; i++) {
if (root->info.dir->children[i]->type == ECMA119_DIR)
sort_tree(root->info.dir->children[i]);
}
}
@ -341,8 +351,8 @@ static
int contains_name(Ecma119Node *dir, const char *name)
{
int i;
for (i = 0; i < dir->info.dir.nchildren; i++) {
Ecma119Node *child = dir->info.dir.children[i];
for (i = 0; i < dir->info.dir->nchildren; i++) {
Ecma119Node *child = dir->info.dir->children[i];
if (!strcmp(child->iso_name, name)) {
return 1;
}
@ -365,8 +375,8 @@ int mangle_single_dir(Ecma119Image *img, Ecma119Node *dir, int max_file_len,
Ecma119Node **children;
int need_sort = 0;
nchildren = dir->info.dir.nchildren;
children = dir->info.dir.children;
nchildren = dir->info.dir->nchildren;
children = dir->info.dir->children;
for (i = 0; i < nchildren; ++i) {
char *name, *ext;
@ -534,9 +544,9 @@ int mangle_dir(Ecma119Image *img, Ecma119Node *dir, int max_file_len,
}
/* recurse */
for (i = 0; i < dir->info.dir.nchildren; ++i) {
if (dir->info.dir.children[i]->type == ECMA119_DIR) {
ret = mangle_dir(img, dir->info.dir.children[i], max_file_len,
for (i = 0; i < dir->info.dir->nchildren; ++i) {
if (dir->info.dir->children[i]->type == ECMA119_DIR) {
ret = mangle_dir(img, dir->info.dir->children[i], max_file_len,
max_dir_len);
if (ret < 0) {
/* error */
@ -611,8 +621,8 @@ static
size_t max_child_name_len(Ecma119Node *dir)
{
size_t ret = 0, i;
for (i = 0; i < dir->info.dir.nchildren; i++) {
size_t len = strlen(dir->info.dir.children[i]->iso_name);
for (i = 0; i < dir->info.dir->nchildren; i++) {
size_t len = strlen(dir->info.dir->children[i]->iso_name);
ret = MAX(ret, len);
}
return ret;
@ -632,31 +642,31 @@ int reparent(Ecma119Node *child, Ecma119Node *parent)
Ecma119Node *placeholder;
/* replace the child in the original parent with a placeholder */
for (i = 0; i < child->parent->info.dir.nchildren; i++) {
if (child->parent->info.dir.children[i] == child) {
for (i = 0; i < child->parent->info.dir->nchildren; i++) {
if (child->parent->info.dir->children[i] == child) {
ret = create_placeholder(child->parent, child, &placeholder);
if (ret < 0) {
return ret;
}
child->parent->info.dir.children[i] = placeholder;
child->parent->info.dir->children[i] = placeholder;
break;
}
}
/* just for debug, this should never happen... */
if (i == child->parent->info.dir.nchildren) {
if (i == child->parent->info.dir->nchildren) {
return ISO_ERROR;
}
/* keep track of the real parent */
child->info.dir.real_parent = child->parent;
child->info.dir->real_parent = child->parent;
/* add the child to its new parent */
child->parent = parent;
parent->info.dir.nchildren++;
parent->info.dir.children = realloc(parent->info.dir.children,
sizeof(void*) * parent->info.dir.nchildren);
parent->info.dir.children[parent->info.dir.nchildren - 1] = child;
parent->info.dir->nchildren++;
parent->info.dir->children = realloc(parent->info.dir->children,
sizeof(void*) * parent->info.dir->nchildren);
parent->info.dir->children[parent->info.dir->nchildren - 1] = child;
return ISO_SUCCESS;
}
@ -696,8 +706,8 @@ int reorder_tree(Ecma119Image *img, Ecma119Node *dir, int level, int pathlen)
} else {
size_t i;
for (i = 0; i < dir->info.dir.nchildren; i++) {
Ecma119Node *child = dir->info.dir.children[i];
for (i = 0; i < dir->info.dir->nchildren; i++) {
Ecma119Node *child = dir->info.dir->children[i];
if (child->type == ECMA119_DIR) {
int newpathlen = pathlen + 1 + strlen(child->iso_name);
ret = reorder_tree(img, child, level + 1, newpathlen);