refactor: reorganize kernel structure and implement memory management zonesHEADmain

1 files changed, 39 insertions, 0 deletions

diff --git a/mirai/memory/zone/create/create.zig b/mirai/memory/zone/create/create.zig
new file mode 100644
index 0000000..d115df0
--- /dev/null
+++ b/mirai/memory/zone/create/create.zig
@@ -0,0 +1,39 @@
+//! Zone Creation
+
+const types = @import("../types/types.zig");
+const Zone = types.Zone;
+const page_size = types.page_size;
+const min_elem_size = types.min_elem_size;
+
+const bootstrap = @import("../bootstrap/bootstrap.zig");
+const alloc_mod = @import("../alloc/alloc.zig");
+
+pub const CreateError = error{
+    NotInitialized,
+    OutOfMemory,
+};
+
+pub fn create(name: []const u8, elem_size: usize) CreateError!*Zone {
+    if (!bootstrap.is_initialized()) return CreateError.NotInitialized;
+
+    const zone_zone = bootstrap.get_zone_zone();
+    const ptr = alloc_mod.zalloc(zone_zone) catch return CreateError.OutOfMemory;
+    const zone: *Zone = @ptrCast(@alignCast(ptr));
+
+    const actual_size = if (elem_size < min_elem_size) min_elem_size else elem_size;
+    const aligned_size = (actual_size + 7) & ~@as(usize, 7);
+
+    zone.elem_size = aligned_size;
+    zone.elems_per_page = page_size / aligned_size;
+    zone.partial_pages = null;
+    zone.full_pages = null;
+    zone.alloc_count = 0;
+    zone.free_count = 0;
+    zone.page_count = 0;
+
+    const copy_len = @min(name.len, 31);
+    @memcpy(zone.name[0..copy_len], name[0..copy_len]);
+    zone.name_len = @truncate(copy_len);
+
+    return zone;
+}