Clang: Watch only PCH sources

We watched all sources but we do not want to watch the sources of the
project part because they are not used to build a PCH.

Change-Id: I700cd6077fc54230c9be94d620043cf3f10cf9ea
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

13 files changed, 49 insertions, 37 deletions

diff --git a/src/libs/clangsupport/refactoringdatabaseinitializer.h b/src/libs/clangsupport/refactoringdatabaseinitializer.h
index a7058d3204..6042264a5d 100644
--- a/src/libs/clangsupport/refactoringdatabaseinitializer.h
+++ b/src/libs/clangsupport/refactoringdatabaseinitializer.h
@@ -144,11 +144,11 @@ public:
         table.setName("projectPartsFiles");
         const Sqlite::Column &projectPartIdColumn = table.addColumn("projectPartId", Sqlite::ColumnType::Integer);
         const Sqlite::Column &sourceIdColumn = table.addColumn("sourceId", Sqlite::ColumnType::Integer);
-        table.addColumn("sourceType", Sqlite::ColumnType::Integer);
+        const Sqlite::Column &sourceType = table.addColumn("sourceType", Sqlite::ColumnType::Integer);
         table.addColumn("pchCreationTimeStamp", Sqlite::ColumnType::Integer);
         table.addColumn("hasMissingIncludes", Sqlite::ColumnType::Integer);
         table.addUniqueIndex({sourceIdColumn, projectPartIdColumn});
-        table.addIndex({projectPartIdColumn});
+        table.addIndex({projectPartIdColumn, sourceType});
 
         table.initialize(database);
     }
diff --git a/src/tools/clangpchmanagerbackend/source/builddependenciesstorage.h b/src/tools/clangpchmanagerbackend/source/builddependenciesstorage.h
index 8c8c51a6cd..187a27cf89 100644
--- a/src/tools/clangpchmanagerbackend/source/builddependenciesstorage.h
+++ b/src/tools/clangpchmanagerbackend/source/builddependenciesstorage.h
@@ -66,10 +66,9 @@ public:
         }
     }
 
-    FilePathIds fetchSources(ProjectPartId projectPartId) const override
+    FilePathIds fetchPchSources(ProjectPartId projectPartId) const override
     {
-        return fetchProjectPartsFilesStatement.template values<FilePathId>(1024,
-                                                                           projectPartId.projectPathId);
+        return fetchPchSourcesStatement.template values<FilePathId>(1024, projectPartId.projectPathId);
     }
 
     void insertOrUpdateFileStatuses(const FileStatuses &fileStatuses) override
@@ -252,8 +251,10 @@ public:
         "CONFLICT(sourceId, projectPartId) DO UPDATE SET sourceType = ?003, "
         "hasMissingIncludes = ?004",
         database};
-    mutable ReadStatement fetchProjectPartsFilesStatement{
-        "SELECT sourceId FROM projectPartsFiles WHERE projectPartId = ? ORDER BY sourceId", database};
+    mutable ReadStatement fetchPchSourcesStatement{
+        "SELECT sourceId FROM projectPartsFiles WHERE projectPartId = ? AND sourceType IN (0, 1, "
+        "3, 4) ORDER BY sourceId",
+        database};
     mutable ReadStatement fetchSourceDependenciesStatement{
         "WITH RECURSIVE collectedDependencies(sourceId) AS (VALUES(?) UNION "
         "SELECT dependencySourceId FROM sourceDependencies, "
diff --git a/src/tools/clangpchmanagerbackend/source/builddependenciesstorageinterface.h b/src/tools/clangpchmanagerbackend/source/builddependenciesstorageinterface.h
index 1166564b32..a1c20811aa 100644
--- a/src/tools/clangpchmanagerbackend/source/builddependenciesstorageinterface.h
+++ b/src/tools/clangpchmanagerbackend/source/builddependenciesstorageinterface.h
@@ -56,7 +56,7 @@ public:
     virtual UsedMacros fetchUsedMacros(FilePathId sourceId) const = 0;
     virtual ProjectPartId fetchProjectPartId(Utils::SmallStringView projectPartName) = 0;
     virtual void updatePchCreationTimeStamp(long long pchCreationTimeStamp, ProjectPartId projectPartId) = 0;
-    virtual FilePathIds fetchSources(ProjectPartId projectPartId) const = 0;
+    virtual FilePathIds fetchPchSources(ProjectPartId projectPartId) const = 0;
 
 protected:
     ~BuildDependenciesStorageInterface() = default;
diff --git a/src/tools/clangpchmanagerbackend/source/pchcreator.cpp b/src/tools/clangpchmanagerbackend/source/pchcreator.cpp
index cd7b492868..15c9a19547 100644
--- a/src/tools/clangpchmanagerbackend/source/pchcreator.cpp
+++ b/src/tools/clangpchmanagerbackend/source/pchcreator.cpp
@@ -114,7 +114,7 @@ void PchCreator::generatePch(PchTask &&pchTask)
 {
     m_projectPartPch.projectPartId = pchTask.projectPartId();
     m_projectPartPch.lastModified = QDateTime::currentSecsSinceEpoch();
-
+    m_sources = std::move(pchTask.sources);
     if (pchTask.includes.empty())
         return;
 
@@ -127,10 +127,9 @@ void PchCreator::generatePch(PchTask &&pchTask)
     m_clangTool.addFile(std::move(headerFilePath), content.clone(), std::move(commandLine));
     bool success = generatePch(NativeFilePath{headerFilePath}, content);
 
-    if (success) {
-        m_sources = pchTask.sources;
-        m_projectPartPch.pchPath = std::move(pchOutputPath);
-    }
+
+    if (success)
+        m_projectPartPch.pchPath = std::move(pchOutputPath);   
 }
 
 const ProjectPartPch &PchCreator::projectPartPch()
diff --git a/src/tools/clangpchmanagerbackend/source/usedmacrofilter.h b/src/tools/clangpchmanagerbackend/source/usedmacrofilter.h
index 9db3c683b9..2d16b484a1 100644
--- a/src/tools/clangpchmanagerbackend/source/usedmacrofilter.h
+++ b/src/tools/clangpchmanagerbackend/source/usedmacrofilter.h
@@ -128,23 +128,26 @@ private:
             case SourceType::TopSystemInclude:
                 topSystemIncludes.emplace_back(source.sourceId);
                 systemIncludes.emplace_back(source.sourceId);
+                sources.emplace_back(source.sourceId);
                 break;
             case SourceType::SystemInclude:
                 systemIncludes.emplace_back(source.sourceId);
+                sources.emplace_back(source.sourceId);
                 break;
             case SourceType::TopProjectInclude:
                 topProjectIncludes.emplace_back(source.sourceId);
                 projectIncludes.emplace_back(source.sourceId);
+                sources.emplace_back(source.sourceId);
                 break;
             case SourceType::ProjectInclude:
                 projectIncludes.emplace_back(source.sourceId);
+                sources.emplace_back(source.sourceId);
                 break;
             case SourceType::UserInclude:
             case SourceType::Source:
                 break;
         }
 
-        sources.emplace_back(source.sourceId);
     }
 
     static Utils::SmallStringVector filterUsedMarcos(const UsedMacros &usedMacros,
diff --git a/src/tools/clangrefactoringbackend/source/symbolindexer.cpp b/src/tools/clangrefactoringbackend/source/symbolindexer.cpp
index 299088aa4b..4f3a6f172f 100644
--- a/src/tools/clangrefactoringbackend/source/symbolindexer.cpp
+++ b/src/tools/clangrefactoringbackend/source/symbolindexer.cpp
@@ -145,7 +145,7 @@ void SymbolIndexer::updateProjectPart(ProjectPartContainer &&projectPart)
     }
 
     m_pathWatcher.updateIdPaths(
-        {{projectPartId, m_buildDependencyStorage.fetchSources(projectPartId)}});
+        {{projectPartId, m_buildDependencyStorage.fetchPchSources(projectPartId)}});
     m_symbolIndexerTaskQueue.addOrUpdateTasks(std::move(symbolIndexerTask));
     m_symbolIndexerTaskQueue.processEntries();
 }
diff --git a/tests/unit/unittest/builddependenciesstorage-test.cpp b/tests/unit/unittest/builddependenciesstorage-test.cpp
index 052ed452f0..d14b94fe30 100644
--- a/tests/unit/unittest/builddependenciesstorage-test.cpp
+++ b/tests/unit/unittest/builddependenciesstorage-test.cpp
@@ -70,7 +70,7 @@ protected:
     MockSqliteWriteStatement &updatePchCreationTimeStampStatement = storage.updatePchCreationTimeStampStatement;
     MockSqliteWriteStatement &deleteAllProjectPartsFilesWithProjectPartNameStatement
         = storage.deleteAllProjectPartsFilesWithProjectPartNameStatement;
-    MockSqliteReadStatement &fetchProjectPartsFilesStatement = storage.fetchProjectPartsFilesStatement;
+    MockSqliteReadStatement &fetchProjectPartsFilesStatement = storage.fetchPchSourcesStatement;
 };
 
 TEST_F(BuildDependenciesStorage, ConvertStringsToJson)
@@ -238,7 +238,7 @@ TEST_F(BuildDependenciesStorage, FetchSources)
     ClangBackEnd::FilePathIds result{3, 5, 7};
     EXPECT_CALL(fetchProjectPartsFilesStatement, valuesReturnFilePathIds(_, 22)).WillOnce(Return(result));
 
-    auto sources = storage.fetchSources(22);
+    auto sources = storage.fetchPchSources(22);
 
     ASSERT_THAT(sources, result);
 }
diff --git a/tests/unit/unittest/mockbuilddependenciesstorage.h b/tests/unit/unittest/mockbuilddependenciesstorage.h
index a4d34e481d..dd2850d88c 100644
--- a/tests/unit/unittest/mockbuilddependenciesstorage.h
+++ b/tests/unit/unittest/mockbuilddependenciesstorage.h
@@ -51,7 +51,7 @@ public:
                  ClangBackEnd::ProjectPartId(Utils::SmallStringView projectPartName));
     MOCK_METHOD2(updatePchCreationTimeStamp,
                  void(long long pchCreationTimeStamp, ClangBackEnd::ProjectPartId projectPartId));
-    MOCK_CONST_METHOD1(fetchSources,
+    MOCK_CONST_METHOD1(fetchPchSources,
                        ClangBackEnd::FilePathIds(ClangBackEnd::ProjectPartId projectPartId));
 };
 
diff --git a/tests/unit/unittest/pchcreator-test.cpp b/tests/unit/unittest/pchcreator-test.cpp
index 0cf84a983d..04e198eec7 100644
--- a/tests/unit/unittest/pchcreator-test.cpp
+++ b/tests/unit/unittest/pchcreator-test.cpp
@@ -226,16 +226,21 @@ TEST_F(PchCreatorVerySlowTest, SourcesAreWatchedAfterSucess)
     creator.doInMainThreadAfterFinished();
 }
 
-TEST_F(PchCreatorVerySlowTest, SourcesAreNotWatchedAfterFail)
+TEST_F(PchCreatorVerySlowTest, SourcesAreWatchedAfterFail)
 {
     pchTask1.systemIncludeSearchPaths = {};
     pchTask1.projectIncludeSearchPaths = {};
     creator.generatePch(std::move(pchTask1));
 
     EXPECT_CALL(mockClangPathWatcher,
-                updateIdPaths(
-                    ElementsAre(AllOf(Field(&ClangBackEnd::IdPaths::id, 1),
-                                      Field(&ClangBackEnd::IdPaths::filePathIds, IsEmpty())))));
+                updateIdPaths(ElementsAre(AllOf(
+                    Field(&ClangBackEnd::IdPaths::id, 1),
+                    Field(&ClangBackEnd::IdPaths::filePathIds,
+                          UnorderedElementsAre(
+                              id(TESTDATA_DIR "/builddependencycollector/project/header2.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/external/external1.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/external/external2.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/project/main2.cpp")))))));
 
     creator.doInMainThreadAfterFinished();
 }
@@ -337,9 +342,14 @@ TEST_F(PchCreatorSlowTest, NoIncludesInTheMainThreadCalls)
                     Field(&ClangBackEnd::PrecompiledHeadersUpdatedMessage::projectPartIds,
                           ElementsAre(Eq(creator.projectPartPch().projectPartId)))));
     EXPECT_CALL(mockClangPathWatcher,
-                updateIdPaths(
-                    ElementsAre(AllOf(Field(&ClangBackEnd::IdPaths::id, 1),
-                                      Field(&ClangBackEnd::IdPaths::filePathIds, IsEmpty())))));
+                updateIdPaths(ElementsAre(AllOf(
+                    Field(&ClangBackEnd::IdPaths::id, 1),
+                    Field(&ClangBackEnd::IdPaths::filePathIds,
+                          UnorderedElementsAre(
+                              id(TESTDATA_DIR "/builddependencycollector/project/header2.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/external/external1.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/external/external2.h"),
+                              id(TESTDATA_DIR "/builddependencycollector/project/main2.cpp")))))));
     EXPECT_CALL(mockBuildDependenciesStorage, updatePchCreationTimeStamp(Gt(0), Eq(1)));
 
     creator.doInMainThreadAfterFinished();
diff --git a/tests/unit/unittest/pchtaskgenerator-test.cpp b/tests/unit/unittest/pchtaskgenerator-test.cpp
index 8f5f0754af..cb9df32235 100644
--- a/tests/unit/unittest/pchtaskgenerator-test.cpp
+++ b/tests/unit/unittest/pchtaskgenerator-test.cpp
@@ -117,7 +117,7 @@ TEST_F(PchTaskGenerator, AddProjectParts)
                     &PchTaskSet::project,
                     AllOf(Field(&PchTask::projectPartIds, ElementsAre(ProjectPartId{1})),
                           Field(&PchTask::includes, ElementsAre(3)),
-                          Field(&PchTask::sources, ElementsAre(1, 2, 3, 4, 5)),
+                          Field(&PchTask::sources, ElementsAre(1, 3, 4, 5)),
                           Field(&PchTask::compilerMacros,
                                 ElementsAre(CompilerMacro{"YI", "1", 1}, CompilerMacro{"SAN", "3", 3})),
                           Field(&PchTask::systemIncludeSearchPaths,
diff --git a/tests/unit/unittest/refactoringdatabaseinitializer-test.cpp b/tests/unit/unittest/refactoringdatabaseinitializer-test.cpp
index 7177060311..3af0fc8cfe 100644
--- a/tests/unit/unittest/refactoringdatabaseinitializer-test.cpp
+++ b/tests/unit/unittest/refactoringdatabaseinitializer-test.cpp
@@ -107,7 +107,10 @@ TEST_F(RefactoringDatabaseInitializer, AddProjectPartsFilesTable)
                            "sourceId INTEGER, sourceType INTEGER, pchCreationTimeStamp INTEGER, "
                            "hasMissingIncludes INTEGER)")));
     EXPECT_CALL(mockDatabase, execute(Eq("CREATE UNIQUE INDEX IF NOT EXISTS index_projectPartsFiles_sourceId_projectPartId ON projectPartsFiles(sourceId, projectPartId)")));
-    EXPECT_CALL(mockDatabase, execute(Eq("CREATE INDEX IF NOT EXISTS index_projectPartsFiles_projectPartId ON projectPartsFiles(projectPartId)")));
+    EXPECT_CALL(mockDatabase,
+                execute(Eq(
+                    "CREATE INDEX IF NOT EXISTS index_projectPartsFiles_projectPartId_sourceType "
+                    "ON projectPartsFiles(projectPartId, sourceType)")));
 
     initializer.createProjectPartsFilesTable();
 }
@@ -247,9 +250,10 @@ TEST_F(RefactoringDatabaseInitializer, CreateInTheContructor)
         execute(
             Eq("CREATE UNIQUE INDEX IF NOT EXISTS index_projectPartsFiles_sourceId_projectPartId "
                "ON projectPartsFiles(sourceId, projectPartId)")));
-    EXPECT_CALL(mockDatabase,
-                execute(Eq("CREATE INDEX IF NOT EXISTS index_projectPartsFiles_projectPartId ON "
-                           "projectPartsFiles(projectPartId)")));
+    EXPECT_CALL(
+        mockDatabase,
+        execute(Eq("CREATE INDEX IF NOT EXISTS index_projectPartsFiles_projectPartId_sourceType ON "
+                   "projectPartsFiles(projectPartId, sourceType)")));
     EXPECT_CALL(mockDatabase,
                 execute(Eq("CREATE TABLE IF NOT EXISTS usedMacros(usedMacroId INTEGER PRIMARY KEY, "
                            "sourceId INTEGER, macroName TEXT)")));
diff --git a/tests/unit/unittest/symbolindexer-test.cpp b/tests/unit/unittest/symbolindexer-test.cpp
index c7831d099f..16e0fc81b0 100644
--- a/tests/unit/unittest/symbolindexer-test.cpp
+++ b/tests/unit/unittest/symbolindexer-test.cpp
@@ -923,7 +923,7 @@ TEST_F(SymbolIndexer, SourcesAreWatched)
     InSequence s;
     FilePathIds sourcePathIds{4, 6, 8};
 
-    EXPECT_CALL(mockBuildDependenciesStorage, fetchSources(projectPart1.projectPartId))
+    EXPECT_CALL(mockBuildDependenciesStorage, fetchPchSources(projectPart1.projectPartId))
         .WillOnce(Return(sourcePathIds));
     EXPECT_CALL(mockPathWatcher,
                 updateIdPaths(ElementsAre(AllOf(Field(&IdPaths::id, projectPart1.projectPartId),
diff --git a/tests/unit/unittest/usedmacrofilter-test.cpp b/tests/unit/unittest/usedmacrofilter-test.cpp
index 788a443eee..85e1bb59b5 100644
--- a/tests/unit/unittest/usedmacrofilter-test.cpp
+++ b/tests/unit/unittest/usedmacrofilter-test.cpp
@@ -98,12 +98,7 @@ TEST_F(UsedMacroFilter, Sources)
     ClangBackEnd::UsedMacroFilter filter(sources, usedMacros, compileMacros);
 
     ASSERT_THAT(filter.sources,
-                ElementsAre(FilePathId{1},
-                            FilePathId{2},
-                            FilePathId{3},
-                            FilePathId{4},
-                            FilePathId{5},
-                            FilePathId{6}));
+                ElementsAre(FilePathId{2}, FilePathId{3}, FilePathId{4}, FilePathId{5}));
 }
 
 TEST_F(UsedMacroFilter, SystemUsedMacros)