move YGMarkerLayout to event based system

Summary: Using layoutPassStart and LayoutPassEnd events instead of YGMarkerLayout for instrumentation

Reviewed By: davidaurelio

Differential Revision: D16048789

fbshipit-source-id: 041a35bc2cb1b7281ca83cf9d35041b4011cfeb9

tests/InstrumentationTest.cpp

@@ -67,136 +67,6 @@ struct MarkerTest : public ::testing::Test {
   uniquePtr<YGConfig> config;
 };
 
-TEST_F(MarkerTest, marker_start_works) {
-  auto root = makeNode();
-
-  decltype(MarkerSection<YGMarkerLayout>::data)* dataAddress;
-  {
-    MarkerSection<YGMarkerLayout> marker{root.get()};
-    dataAddress = &marker.data;
-  }
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(markerCookie.start.marker, YGMarkerLayout)
-      << "wrong marker type passed to `startMarker`";
-  ASSERT_EQ(markerCookie.start.node, root.get())
-      << "wrong node pointer passed to `startMarker`";
-  ASSERT_EQ(markerCookie.start.markerData.layout, dataAddress)
-      << "wrong pointer to marker data passed to `startMarker`";
-}
-
-TEST_F(MarkerTest, marker_end_works) {
-  auto root = makeNode();
-
-  { MarkerSection<YGMarkerLayout> marker{root.get()}; }
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(markerCookie.end.data.marker, markerCookie.start.marker)
-      << "marker type passed to `endMarker` differs from type passed to "
-         "`startMarker`";
-  ASSERT_EQ(markerCookie.end.data.node, markerCookie.start.node)
-      << "node passed to `endMarker` differs from node passed to `startMarker`";
-  ASSERT_EQ(
-      markerCookie.end.data.markerData.layout,
-      markerCookie.start.markerData.layout)
-      << "marker data pointer passed to `endMarker` differs from pointer "
-         "passed to `startMarker`";
-  ASSERT_EQ(markerCookie.end.cookie, &markerCookie)
-      << "pointer returned by `startMarker` was not passed to `endMarker`";
-}
-
-TEST_F(MarkerTest, layout_marker) {
-  auto root = makeNode();
-
-  calculateLayout(root);
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(markerCookie.start.marker, YGMarkerLayout);
-  ASSERT_EQ(markerCookie.start.node, root.get());
-}
-
-TEST_F(MarkerTest, layout_marker_counts_single_node_layout) {
-  auto root = makeNode();
-
-  calculateLayout(root);
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(
-      markerCookie.end.markerData.layout,
-      (YGMarkerLayoutData{.layouts = 1, .measures = 0, .maxMeasureCache = 1}));
-}
-
-TEST_F(MarkerTest, layout_marker_counts_multi_node_layout) {
-  auto root = makeNode();
-  auto childA = addChild(root);
-  auto childB = addChild(root);
-
-  calculateLayout(root);
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(
-      markerCookie.end.markerData.layout,
-      (YGMarkerLayoutData{.layouts = 3, .measures = 4, .maxMeasureCache = 3}));
-}
-
-TEST_F(MarkerTest, layout_marker_counts_cache_hits_single_node_layout) {
-  auto root = makeNode();
-  calculateLayout(root);
-
-  calculateLayout(root);
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(
-      markerCookie.end.markerData.layout,
-      (YGMarkerLayoutData{.layouts = 0,
-                          .measures = 0,
-                          .cachedLayouts = 1,
-                          .cachedMeasures = 0}));
-}
-
-TEST_F(MarkerTest, layout_marker_counts_cache_hits_multi_node_layout) {
-  auto root = makeNode();
-  auto childA = addChild(root);
-  auto childB = addChild(root);
-  calculateLayout(root, 987, 654);
-  calculateLayout(root, 123, 456);
-
-  calculateLayout(root, 987, 654);
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(
-      markerCookie.end.markerData.layout,
-      (YGMarkerLayoutData{.layouts = 3,
-                          .measures = 0,
-                          .maxMeasureCache = 5,
-                          .cachedLayouts = 0,
-                          .cachedMeasures = 4}));
-}
-
-TEST_F(MarkerTest, layout_marker_has_max_measure_cache) {
-  auto root = makeNode();
-  auto a = addChild(root);
-  auto b = addChild(root);
-  YGNodeStyleSetFlexBasis(a.get(), 10.0f);
-
-  for (auto s : {20, 30, 40}) {
-    calculateLayout(root, s, s);
-  }
-
-  auto& markerCookie = findLastMarker(YGMarkerLayout);
-
-  ASSERT_EQ(
-      markerCookie.end.markerData.layout,
-      (YGMarkerLayoutData{.layouts = 3, .measures = 3, .maxMeasureCache = 7}));
-}
-
 TEST_F(MarkerTest, measure_functions_get_wrapped) {
   auto root = makeNode();
   YGNodeSetMeasureFunc(
@@ -244,9 +114,6 @@ void MarkerTest::endMarker(
   auto cookie = static_cast<MarkerCookie*>(id);
   cookie->end = {{marker, node, data}, id, {}};
   switch (marker) {
-    case YGMarkerLayout:
-      cookie->end.markerData.layout = *marker::data<YGMarkerLayout>(data);
-      break;
     case YGMarkerMeasure:
     case YGMarkerBaselineFn:
       break;
@@ -275,8 +142,6 @@ namespace {
 
 const char* markerTypeName(YGMarker type) {
   switch (type) {
-    case YGMarkerLayout:
-      return "YGMarkerLayout";
     case YGMarkerMeasure:
       return "YGMarkerMeasure";
     case YGMarkerBaselineFn:

yoga/YGMarker.h

@@ -14,7 +14,6 @@ typedef struct YGNode* YGNodeRef;
 typedef struct YGConfig* YGConfigRef;
 
 typedef YG_ENUM_BEGIN(YGMarker){
-    YGMarkerLayout,
     YGMarkerMeasure,
     YGMarkerBaselineFn,
 } YG_ENUM_END(YGMarker);
@@ -33,7 +32,6 @@ typedef struct {
 } YGMarkerNoData;
 
 typedef union {
-  YGMarkerLayoutData* layout;
   YGMarkerNoData* noData;
 } YGMarkerData;
 
@@ -60,12 +58,6 @@ namespace detail {
 template <YGMarker M>
 struct MarkerData;
 
-template <>
-struct MarkerData<YGMarkerLayout> {
-  using type = YGMarkerLayoutData;
-  static type*& get(YGMarkerData& d) { return d.layout; }
-};
-
 struct NoMarkerData {
   using type = YGMarkerNoData;
   static type*& get(YGMarkerData& d) { return d.noData; }

yoga/Yoga.cpp

@@ -4063,7 +4063,7 @@ void YGNodeCalculateLayoutWithContext(
     void* layoutContext) {
 
   Event::publish<Event::LayoutPassStart>(node, {layoutContext});
-  marker::MarkerSection<YGMarkerLayout> marker{node};
+  YGMarkerLayoutData markerData = {};
 
   // Increment the generation count. This will force the recursive routine to
   // visit all dirty nodes at least once. Subsequent visits will be skipped if
@@ -4122,7 +4122,7 @@ void YGNodeCalculateLayoutWithContext(
           true,
           "initial",
           node->getConfig(),
-          marker.data,
+          markerData,
           layoutContext,
           0, // tree root
           gCurrentGenerationCount)) {
@@ -4141,8 +4141,7 @@ void YGNodeCalculateLayoutWithContext(
 #endif
   }
 
-  marker.end();
-  Event::publish<Event::LayoutPassEnd>(node, {layoutContext, &marker.data});
+  Event::publish<Event::LayoutPassEnd>(node, {layoutContext, &markerData});
 
   // We want to get rid off `useLegacyStretchBehaviour` from YGConfig. But we
   // aren't sure whether client's of yoga have gotten rid off this flag or not.
@@ -4160,7 +4159,7 @@ void YGNodeCalculateLayoutWithContext(
     gCurrentGenerationCount++;
     // Rerun the layout, and calculate the diff
     unsetUseLegacyFlagRecursively(nodeWithoutLegacyFlag);
-    YGMarkerLayoutData layoutMarkerData;
+    YGMarkerLayoutData layoutMarkerData = {};
     if (YGLayoutNodeInternal(
             nodeWithoutLegacyFlag,
             width,