tracing gc only

1 files changed, 7 insertions, 16 deletions

diff --git a/docs/application/gc.md b/docs/application/gc.md
index ff538ee..e171a05 100644
--- a/docs/application/gc.md
+++ b/docs/application/gc.md
@@ -7,32 +7,23 @@
 ```c
 typedef struct _kpl_gc {
     POOL_HEADER(_kpl_gc);
-    union {
-        _Atomic int32_t ref_count;
-        _Atomic bool mark;
-    } method;
+    _Atomic bool mark;
     kpl_any any;
     pthread_mutex_t mutex;
 } kpl_gc;
 
 static _Atomic size_t gc_threads;
 
-static kpl_gc *old_gc_head, *gc_head;
-```
-
-## Counting
-
-`ref_count` starts at 1
+static pthread_mutex_t gc_head_mutex;
 
-Each assign increments the `ref_count`, each time it goes out of scope the `ref_count` is decreased
-
-When `ref_count` hits 0, data is freed
+static kpl_gc *gc_head_sweep, *gc_head;
+```
 
 ## Tracing
 
 1. Once triggered add a init task to the async queue
-2. This task moves the `gc_head` to the `old_gc_head` and sets the `gc_wait` to off for each thread
+2. This task moves the `gc_head` to the `gc_head_sweep` and sets the `gc_wait` to off for each thread
 3. Each thread will run down its queue queue marking found gc objects
 3. Once all have run and `gc_threads == available_threads` add a mark and sweep task to the async queue
-4. Async task goes down async queue and does final mark, then a sweep on the `old_gc_head` is done
-5. What remains on the `old_gc_head` is added to `gc_head`
+4. Async task goes down async queue and does final mark, then a sweep on the `gc_head_sweep` is done
+5. What remains on the `gc_head_sweep` is added to `gc_head`