ptos: pool: Propagate page information and prepend header

Signed-off-by: Chloe M <chloe@mensia.org>
2026-07-13 20:09:53 -04:00
parent 6472e67fe2
commit aae870e874
2 changed files with 58 additions and 7 deletions
@@ -64,6 +64,24 @@ typedef struct {
    POOL_SEGMENT Level[POOL_LEVEL_MAX];
 } POOL_REGION;

+/*
+ * A pool header is prepended to the start of allocated
+ * memory.
+ *
+ * @Gran:       Granularity of page bitmap
+ * @BitBase:    Allocation bitbase
+ * @SizeBytes:  Allocation size in bytes
+ * @Tag:        Tag assigned to allocation
+ * @Page:       Page we reside in
+ */
+typedef struct {
+    USHORT Gran;
+    UCHAR BitBase : 6;
+    USIZE SizeBytes;
+    ULONG Tag;
+    POOL_PAGE *Page;
+} POOL_HEADER;
+
 /*
 * Initialize a pool region
 *