diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9854000..c630fde 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
cmake_minimum_required(VERSION 3.25)
-project(blt-gp VERSION 0.0.7)
+project(blt-gp VERSION 0.0.8)
option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)
diff --git a/include/blt/gp/program.h b/include/blt/gp/program.h
index 9d98755..99da360 100644
--- a/include/blt/gp/program.h
+++ b/include/blt/gp/program.h
@@ -16,6 +16,7 @@
* along with this program. If not, see .
*/
+#include
#ifndef BLT_GP_PROGRAM_H
#define BLT_GP_PROGRAM_H
@@ -86,38 +87,50 @@ namespace blt::gp
class stack_allocator
{
- constexpr static blt::size_t BLOCK_SIZE = 4096;
+ constexpr static blt::size_t PAGE_SIZE = 0x1000;
public:
private:
- template
- static inline auto to_block(T* p)
- {
- return reinterpret_cast(reinterpret_cast(p) & static_cast(~(BLOCK_SIZE - 1)));
- }
-
struct block
{
struct block_metadata_t
{
+ blt::size_t size = 0;
block* next = nullptr;
block* prev = nullptr;
blt::u8* offset = nullptr;
} metadata;
- blt::u8 buffer[BLOCK_SIZE - sizeof(block_metadata_t)]{};
+ blt::u8 buffer[8]{};
- block()
+ explicit block(blt::size_t size)
{
+ metadata.size = size;
metadata.offset = buffer;
}
- // remaining space inside the block after accounting for the metadata
- static constexpr blt::size_t BLOCK_REMAINDER = BLOCK_SIZE - sizeof(typename block::block_metadata_t);
+ [[nodiscard]] blt::size_t remainder_after_meta() const
+ {
+ return metadata.size - sizeof(typename block::block_metadata_t);
+ }
+
+ [[nodiscard]] blt::ptrdiff_t remaining_bytes() const
+ {
+ return static_cast(metadata.offset - buffer);
+ }
};
- static block* allocate_block()
+ static size_t to_nearest_page_size(blt::size_t bytes)
{
- return reinterpret_cast(std::aligned_alloc(BLOCK_SIZE, BLOCK_SIZE));
+ constexpr static blt::size_t MASK = ~(PAGE_SIZE - 1);
+ return (bytes & MASK) + PAGE_SIZE;
+ }
+
+ static block* allocate_block(blt::size_t bytes)
+ {
+ auto size = to_nearest_page_size(bytes);
+ auto* data = std::aligned_alloc(PAGE_SIZE, size);
+ new(data) block{size};
+ return reinterpret_cast(data);
}
private:
diff --git a/lib/blt b/lib/blt
index bc68e6d..8d3bfbc 160000
--- a/lib/blt
+++ b/lib/blt
@@ -1 +1 @@
-Subproject commit bc68e6dd4a3dfa1de9be2fb8e9302b52c4f3db5c
+Subproject commit 8d3bfbcdc36fb769257ae58c0374ef44253e0a34