diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/pugixml.cpp | 51 |
1 files changed, 22 insertions, 29 deletions
diff --git a/src/pugixml.cpp b/src/pugixml.cpp index c98ee40..033bf13 100644 --- a/src/pugixml.cpp +++ b/src/pugixml.cpp @@ -473,7 +473,7 @@ PUGI__NS_BEGIN #ifdef PUGIXML_COMPACT char_t* compact_string_base; void* compact_shared_parent; - char* compact_page_marker; + uint32_t* compact_page_marker; #endif }; @@ -556,7 +556,16 @@ PUGI__NS_BEGIN assert(_root == page); // top page freed, just reset sizes - page->busy_size = page->freed_size = 0; + page->busy_size = 0; + page->freed_size = 0; + + #ifdef PUGIXML_COMPACT + // reset compact state to maximize efficiency + page->compact_string_base = 0; + page->compact_shared_parent = 0; + page->compact_page_marker = 0; + #endif + _busy_size = 0; } else @@ -696,7 +705,7 @@ PUGI__NS_BEGIN PUGI__STATIC_ASSERT(xml_memory_block_alignment == compact_alignment); PUGI__STATIC_ASSERT(sizeof(xml_memory_page) + xml_memory_page_size <= (1 << (16 + compact_alignment_log2))); - ptrdiff_t offset = (reinterpret_cast<char*>(this) - page->compact_page_marker); + ptrdiff_t offset = (reinterpret_cast<char*>(this) - reinterpret_cast<char*>(page->compact_page_marker)); assert(offset >= 0 && offset < 256 << compact_alignment_log2); _page = static_cast<unsigned char>(offset >> compact_alignment_log2); @@ -725,11 +734,6 @@ PUGI__NS_BEGIN return const_cast<xml_memory_page*>(reinterpret_cast<const xml_memory_page*>(page_marker - *reinterpret_cast<const uint32_t*>(page_marker))); } - bool has_marker() const - { - return _page == sizeof(uint32_t) >> compact_alignment_log2; - } - private: unsigned char _page; unsigned char _flags; @@ -1122,13 +1126,17 @@ PUGI__NS_BEGIN if (!result) return 0; // adjust for marker - if (PUGI__UNLIKELY(static_cast<uintptr_t>(static_cast<char*>(result) - out_page->compact_page_marker) >= 256 * compact_alignment)) + if (PUGI__UNLIKELY(static_cast<uintptr_t>(static_cast<char*>(result) - reinterpret_cast<char*>(out_page->compact_page_marker)) >= 256 * compact_alignment)) { // insert new marker uint32_t* marker = static_cast<uint32_t*>(result); *marker = reinterpret_cast<char*>(marker) - reinterpret_cast<char*>(out_page); - out_page->compact_page_marker = reinterpret_cast<char*>(marker); + out_page->compact_page_marker = marker; + + // since we don't reuse the page space until we reallocate it, we can just pretend that we freed the marker block + // this will make sure deallocate_memory correctly tracks the size + out_page->freed_size += sizeof(uint32_t); return marker + 1; } @@ -1140,26 +1148,11 @@ PUGI__NS_BEGIN return result; } } - - template <typename T> - inline void deallocate_object(xml_allocator& alloc, T* ptr, size_t size, xml_memory_page* page) - { - // this is very crude... we should be able to do better? - if (ptr->header.has_marker()) - page->compact_page_marker = 0; - - alloc.deallocate_memory(ptr, size + ptr->header.has_marker() * sizeof(uint32_t), page); - } #else inline void* allocate_object(xml_allocator& alloc, size_t size, xml_memory_page*& out_page) { return alloc.allocate_memory(size, out_page); } - - inline void deallocate_object(xml_allocator& alloc, void* ptr, size_t size, xml_memory_page* page) - { - alloc.deallocate_memory(ptr, size, page); - } #endif inline xml_attribute_struct* allocate_attribute(xml_allocator& alloc) @@ -1186,7 +1179,7 @@ PUGI__NS_BEGIN if (a->header & impl::xml_memory_page_value_allocated_mask) alloc.deallocate_string(a->value); - deallocate_object(alloc, a, sizeof(xml_attribute_struct), PUGI__GETPAGE(a)); + alloc.deallocate_memory(a, sizeof(xml_attribute_struct), PUGI__GETPAGE(a)); } inline void destroy_node(xml_node_struct* n, xml_allocator& alloc) @@ -1215,7 +1208,7 @@ PUGI__NS_BEGIN child = next; } - deallocate_object(alloc, n, sizeof(xml_node_struct), PUGI__GETPAGE(n)); + alloc.deallocate_memory(n, sizeof(xml_node_struct), PUGI__GETPAGE(n)); } inline void append_node(xml_node_struct* child, xml_node_struct* node) @@ -6725,8 +6718,8 @@ namespace pugi // setup first page marker #ifdef PUGIXML_COMPACT - page->compact_page_marker = reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page); - *reinterpret_cast<uint32_t*>(page->compact_page_marker) = sizeof(impl::xml_memory_page); + page->compact_page_marker = reinterpret_cast<uint32_t*>(reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page)); + *page->compact_page_marker = sizeof(impl::xml_memory_page); #endif // allocate new root |