summaryrefslogtreecommitdiff
path: root/src/pugixml.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/pugixml.cpp')
-rw-r--r--src/pugixml.cpp98
1 files changed, 82 insertions, 16 deletions
diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index 677ae7b..7a8d7c1 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -309,9 +309,7 @@ PUGI__NS_BEGIN
void** insert(const void* key, size_t tag)
{
assert(key);
-
- if (_count >= _capacity * 3 / 4)
- rehash();
+ assert(_count < _capacity * 3 / 4);
size_t hashmod = _capacity - 1;
size_t bucket = hash(key) & hashmod;
@@ -341,6 +339,14 @@ PUGI__NS_BEGIN
return 0;
}
+ bool reserve()
+ {
+ if (_count + 16 >= _capacity * 3 / 4)
+ return rehash();
+
+ return true;
+ }
+
private:
struct item_t
{
@@ -353,13 +359,14 @@ PUGI__NS_BEGIN
size_t _count;
- void rehash()
+ bool rehash()
{
compact_hash_table rt;
- rt._capacity = (_capacity == 0) ? 256 : _capacity * 2;
+ rt._capacity = (_capacity == 0) ? 32 : _capacity * 2;
rt._items = static_cast<item_t*>(xml_memory::allocate(sizeof(item_t) * rt._capacity));
- assert(rt._items);
+ if (!rt._items)
+ return false;
memset(rt._items, 0, sizeof(item_t) * rt._capacity);
@@ -372,6 +379,8 @@ PUGI__NS_BEGIN
_capacity = rt._capacity;
_items = rt._items;
+
+ return true;
}
// http://burtleburtle.net/bob/hash/integer.html
@@ -593,6 +602,15 @@ PUGI__NS_BEGIN
deallocate_memory(header, full_size, page);
}
+ bool reserve()
+ {
+ #ifdef PUGIXML_COMPACT
+ return _hash->reserve();
+ #else
+ return true;
+ #endif
+ }
+
xml_memory_page* _root;
size_t _busy_size;
@@ -1269,6 +1287,8 @@ PUGI__NS_BEGIN
PUGI__FN_NO_INLINE xml_node_struct* append_new_node(xml_node_struct* node, xml_allocator& alloc, xml_node_type type = node_element)
{
+ if (!alloc.reserve()) return 0;
+
xml_node_struct* child = allocate_node(alloc, type);
if (!child) return 0;
@@ -1279,6 +1299,8 @@ PUGI__NS_BEGIN
PUGI__FN_NO_INLINE xml_attribute_struct* append_new_attribute(xml_node_struct* node, xml_allocator& alloc)
{
+ if (!alloc.reserve()) return 0;
+
xml_attribute_struct* attr = allocate_attribute(alloc);
if (!attr) return 0;
@@ -2252,6 +2274,8 @@ PUGI__NS_BEGIN
{
xml_allocator* alloc = reinterpret_cast<xml_memory_page*>(header & xml_memory_page_pointer_mask)->allocator;
+ if (!alloc->reserve()) return false;
+
// allocate new buffer
char_t* buf = alloc->allocate_string(source_length + 1);
if (!buf) return false;
@@ -5345,7 +5369,10 @@ namespace pugi
{
if (type() != node_element && type() != node_declaration) return xml_attribute();
- xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
if (!a) return xml_attribute();
impl::append_attribute(a._attr, _root);
@@ -5359,7 +5386,10 @@ namespace pugi
{
if (type() != node_element && type() != node_declaration) return xml_attribute();
- xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
if (!a) return xml_attribute();
impl::prepend_attribute(a._attr, _root);
@@ -5374,7 +5404,10 @@ namespace pugi
if (type() != node_element && type() != node_declaration) return xml_attribute();
if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
- xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
if (!a) return xml_attribute();
impl::insert_attribute_before(a._attr, attr._attr, _root);
@@ -5389,7 +5422,10 @@ namespace pugi
if (type() != node_element && type() != node_declaration) return xml_attribute();
if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
- xml_attribute a(impl::allocate_attribute(impl::get_allocator(_root)));
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
if (!a) return xml_attribute();
impl::insert_attribute_after(a._attr, attr._attr, _root);
@@ -5443,7 +5479,10 @@ namespace pugi
{
if (!impl::allow_insert_child(this->type(), type_)) return xml_node();
- xml_node n(impl::allocate_node(impl::get_allocator(_root), type_));
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
if (!n) return xml_node();
impl::append_node(n._root, _root);
@@ -5456,8 +5495,11 @@ namespace pugi
PUGI__FN xml_node xml_node::prepend_child(xml_node_type type_)
{
if (!impl::allow_insert_child(this->type(), type_)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
- xml_node n(impl::allocate_node(impl::get_allocator(_root), type_));
+ xml_node n(impl::allocate_node(alloc, type_));
if (!n) return xml_node();
impl::prepend_node(n._root, _root);
@@ -5471,8 +5513,11 @@ namespace pugi
{
if (!impl::allow_insert_child(this->type(), type_)) return xml_node();
if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
- xml_node n(impl::allocate_node(impl::get_allocator(_root), type_));
+ xml_node n(impl::allocate_node(alloc, type_));
if (!n) return xml_node();
impl::insert_node_before(n._root, node._root);
@@ -5486,8 +5531,11 @@ namespace pugi
{
if (!impl::allow_insert_child(this->type(), type_)) return xml_node();
if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
- xml_node n(impl::allocate_node(impl::get_allocator(_root), type_));
+ xml_node n(impl::allocate_node(alloc, type_));
if (!n) return xml_node();
impl::insert_node_after(n._root, node._root);
@@ -5573,6 +5621,9 @@ namespace pugi
{
if (!impl::allow_move(*this, moved)) return xml_node();
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
// disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
@@ -5586,6 +5637,9 @@ namespace pugi
{
if (!impl::allow_move(*this, moved)) return xml_node();
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
// disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
@@ -5601,6 +5655,9 @@ namespace pugi
if (!node._root || node._root->parent != _root) return xml_node();
if (moved._root == node._root) return xml_node();
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
// disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
@@ -5616,6 +5673,9 @@ namespace pugi
if (!node._root || node._root->parent != _root) return xml_node();
if (moved._root == node._root) return xml_node();
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
// disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
@@ -5635,8 +5695,11 @@ namespace pugi
if (!_root || !a._attr) return false;
if (!impl::is_attribute_of(a._attr, _root)) return false;
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
impl::remove_attribute(a._attr, _root);
- impl::destroy_attribute(a._attr, impl::get_allocator(_root));
+ impl::destroy_attribute(a._attr, alloc);
return true;
}
@@ -5650,8 +5713,11 @@ namespace pugi
{
if (!_root || !n._root || n._root->parent != _root) return false;
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
impl::remove_node(n._root);
- impl::destroy_node(n._root, impl::get_allocator(_root));
+ impl::destroy_node(n._root, alloc);
return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 23:15:22 +0000