1 files changed, 41 insertions, 0 deletions
diff --git a/implement.h b/implement.h
index 2256965..e507831 100644
--- a/implement.h
+++ b/implement.h
@@ -27,6 +27,47 @@ enum { _PTHREAD_HANDLER_POP_LIFO, _PTHREAD_HANDLER_POP_FIFO };
  */
 #define RND_SIZEOF(T) (((sizeof(T) / sizeof(DWORD)) + 1) * sizeof(DWORD))
 
+/* General description of a handler function on a stack. */
+typedef struct _pthread_handler_node _pthread_handler_node_t;
+
+struct _pthread_handler_node {
+  _pthread_handler_node_t next;
+  void (* routine)(void *);
+  void * arg;
+};
+
+/* Stores a thread call routine and argument. */
+typedef struct {
+  unsigned (*routine)(void *);
+  void * arg;
+} _pthread_call_t;
+
+#define _PTHREAD_THIS (_pthread_find_thread_entry(pthread_this()))
+
+#define _PTHREAD_STACK(stack) \
+  ((_pthread_handler_node_t *) &(_PTHREAD_THIS)->cleanupstack + stack);
+
+/* An element in the thread table. */
+typedef struct _pthread_threads_thread _pthread_threads_thread_t;
+
+struct _pthread_threads_thread {
+  pthread_t                   thread;
+  pthread_attr_t              attr;
+  _pthread_call_t             call;
+  enum {
+    _PTHREAD_CLEANUP_STACK,
+    _PTHREAD_DESTRUCTOR_STACK,
+    _PTHREAD_FORKPREPARE_STACK,
+    _PTHREAD_FORKPARENT_STACK,
+    _PTHREAD_FORKCHILD_STACK
+  };
+  _pthread_handler_node_t *   cleanupstack;
+  _pthread_handler_node_t *   destructorstack;
+  _pthread_handler_node_t *   forkpreparestack;
+  _pthread_handler_node_t *   forkparentstack;
+  _pthread_handler_node_t *   forkchildstack;
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */