TB print hello world

ulib/linklist.h

@@ -0,0 +1,45 @@
+#ifndef ULIB_LINKLIST_H_
+#define ULIB_LINKLIST_H_
+
+#define LL_APPEND(head, new) \
+  do { \
+    if ((head) != NULL) { \
+      typeof((head)) __tmp; \
+      (new)->next = NULL; \
+      __tmp = (head); \
+      while (__tmp->next != NULL) { \
+        __tmp = __tmp->next; \
+      } \
+      __tmp->next = (new); \
+    } else { \
+      (new)->next = NULL; \
+      (head) = (new); \
+    } \
+  } while(0)
+
+#define LL_REMOVE(head, ele) \
+  do { \
+    typeof((head)) __cur = (head); \
+    typeof((head)) __prev = NULL; \
+    while (__cur != (ele)) { \
+      __prev = __cur; \
+      __cur = __cur->next; \
+    } \
+    if (__prev != NULL) { \
+      __prev->next = __cur->next; \
+    } \
+  } while(0)
+
+#define LL_FINDPROP(head, out, propname, propvalue) \
+  do { \
+    typeof((head)) __tmp = (head); \
+    while (__tmp) { \
+      if (__tmp->propname == (propvalue)) { \
+        (out) = __tmp; \
+        break; \
+      } \
+      __tmp = __tmp->next; \
+    } \
+  } while(0)
+
+#endif // ULIB_LINKLIST_H_