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authorArseny Kapoulkine <arseny.kapoulkine@gmail.com>2014-11-08 20:05:12 +0100
committerArseny Kapoulkine <arseny.kapoulkine@gmail.com>2014-11-08 20:05:12 +0100
commitcca23e636354dc73429a19e14e32cc9a5e632735 (patch)
tree4673f508a2e9b7e6acf1dd8efdf9c4a6cfb2277f /src
parentc74dc3360470dd68646dbce80d9d088d84946610 (diff)
Reduce required page alignment to 32
Since we no longer have a name/value pair in nodes we need one less bit to represent allocated flags. This reduces the page overhead by 32 bytes.
Diffstat (limited to 'src')
-rw-r--r--src/pugixml.cpp16
1 files changed, 11 insertions, 5 deletions
diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index e92ae60..f0efa90 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -407,13 +407,19 @@ PUGI__NS_BEGIN
#endif
;
- static const uintptr_t xml_memory_page_alignment = 64;
+ static const uintptr_t xml_memory_page_alignment = 32;
static const uintptr_t xml_memory_page_pointer_mask = ~(xml_memory_page_alignment - 1);
- static const uintptr_t xml_memory_page_contents_shared_mask = 32;
- static const uintptr_t xml_memory_page_contents_allocated_mask = 16;
- static const uintptr_t xml_memory_page_name_allocated_mask = 16;
- static const uintptr_t xml_memory_page_value_allocated_mask = 8;
+
+ // extra metadata bits for xml_node_struct
+ static const uintptr_t xml_memory_page_contents_shared_mask = 16;
+ static const uintptr_t xml_memory_page_contents_allocated_mask = 8;
static const uintptr_t xml_memory_page_type_mask = 7;
+
+ // extra metadata bits for xml_attribute_struct
+ static const uintptr_t xml_memory_page_name_allocated_mask = 2;
+ static const uintptr_t xml_memory_page_value_allocated_mask = 1;
+
+ // combined masks for string uniqueness
static const uintptr_t xml_memory_page_name_allocated_or_shared_mask = xml_memory_page_name_allocated_mask | xml_memory_page_contents_shared_mask;
static const uintptr_t xml_memory_page_value_allocated_or_shared_mask = xml_memory_page_value_allocated_mask | xml_memory_page_contents_shared_mask;
static const uintptr_t xml_memory_page_contents_allocated_or_shared_mask = xml_memory_page_contents_allocated_mask | xml_memory_page_contents_shared_mask;