From c6c6a95fa196117f38fb589c20852fc907f6d0a7 Mon Sep 17 00:00:00 2001
From: ChunelFeng <chunel@foxmail.com>
Date: Sun, 5 Jan 2025 17:16:38 +0800
Subject: [PATCH] [perf] optimize tree shape, timecost 22s->18s

---
 .../GDynamicEngine/GDynamicEngine.cpp         |  9 +++++---
 src/GraphCtrl/GraphElement/_GEngine/GEngine.h | 22 +++++++++++++------
 2 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/src/GraphCtrl/GraphElement/_GEngine/GDynamicEngine/GDynamicEngine.cpp b/src/GraphCtrl/GraphElement/_GEngine/GDynamicEngine/GDynamicEngine.cpp
index 19f77a41..7ebd9690 100644
--- a/src/GraphCtrl/GraphElement/_GEngine/GDynamicEngine/GDynamicEngine.cpp
+++ b/src/GraphCtrl/GraphElement/_GEngine/GDynamicEngine/GDynamicEngine.cpp
@@ -15,13 +15,13 @@ CStatus GDynamicEngine::setup(const GSortedGElementPtrSet& elements) {
     /**
      * 1. 判断是否是 dag 结构
      * 2. 标记数据，比如有多少个结束element等
-     * 3. 标记哪些数据，是linkable 的
+     * 3. 计算element的结构类型
      * 4. 分析当前dag类型信息
      */
     CGRAPH_RETURN_ERROR_STATUS_BY_CONDITION(!GEngine::isDag(elements),
                                             "it is not a dag struct");
     mark(elements);
-    link(elements);
+    calcShape(elements);
     analysisDagType(elements);
     CGRAPH_FUNCTION_END
 }
@@ -125,8 +125,11 @@ CVoid GDynamicEngine::afterElementRun(GElementPtr element) {
     element->done_ = true;
     if (!element->run_before_.empty() && cur_status_.isOK()) {
         if (internal::GElementShape::LINKABLE == element->shape_) {
-            // 针对linkable 的情况，做特殊判定
             process(*(element->run_before_.begin()), true);
+        } else if (internal::GElementShape::ROOT == element->shape_) {
+            for (CSize i = 0; i < element->run_before_.size(); i++) {
+                process(element->run_before_[i], i == element->run_before_.size() - 1);
+            }
         } else {
             GElementPtr reserved = nullptr;
             for (auto* cur : element->run_before_) {
diff --git a/src/GraphCtrl/GraphElement/_GEngine/GEngine.h b/src/GraphCtrl/GraphElement/_GEngine/GEngine.h
index f00aab70..dbea0e13 100644
--- a/src/GraphCtrl/GraphElement/_GEngine/GEngine.h
+++ b/src/GraphCtrl/GraphElement/_GEngine/GEngine.h
@@ -30,25 +30,33 @@ class GEngine : public GElementObject {
     virtual CStatus setup(const GSortedGElementPtrSet& elements) = 0;
 
     /**
-     * 分析所有的可以设置 linkable 的数据
+     * 分析当前的element的形状
      * @param elements
      * @return
      */
-    CVoid link(const GSortedGElementPtrSet& elements) {
+    CVoid calcShape(const GSortedGElementPtrSet& elements) {
         /**
-         * 认定图可以连通的判定条件：
-         * 1，当前元素仅有一个后继
-         * 2，当前元素的唯一后继，仅有一个前驱
-         * 3，前后元素绑定机制是一样的
+         * 认定LINKABLE的判定条件：
+         *   1，当前元素仅有一个后继
+         *   2，当前元素的唯一后继，仅有一个前驱
+         *   3，前后元素绑定机制是一样的
+         * 认定ROOT的判断条件：
+         *   1，有后继，且不是LINKABLE
+         *   2，所有的后继仅有当前一个前驱
          */
         linked_size_ = 0;
         for (GElementPtr element : elements) {
-            element->shape_ = internal::GElementShape::NORMAL;
             if (1 == element->run_before_.size()
                 && 1 == (*element->run_before_.begin())->dependence_.size()
                 && element->binding_index_ == (*(element->run_before_.begin()))->binding_index_) {
                 element->shape_ = internal::GElementShape::LINKABLE;
                 linked_size_++;
+            } else if (!element->run_before_.empty()
+                       && std::all_of(element->run_before_.begin(), element->run_before_.end(),
+                                      [](GElementPtr ptr) { return 1 == ptr->dependence_.size();})) {
+                element->shape_ = internal::GElementShape::ROOT;
+            } else {
+                element->shape_ = internal::GElementShape::NORMAL;
             }
         }
     }