simpleperf: extract common code into report_utils.cpp

Extract common code in cmd_report_sample.cpp and
report_lib_interface.cpp, into report_utils.cpp.

Bug: 175163225
Test: run simpleperf_unit_test.
Test: run test.py TestReportLibs*.
Change-Id: Ic64956cd1a73ef3165337aa3509a15d14e095959

1 files changed, 66 insertions, 0 deletions

diff --git a/simpleperf/report_utils.h b/simpleperf/report_utils.h
new file mode 100644
index 00000000..fb628bc5
--- /dev/null
+++ b/simpleperf/report_utils.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <inttypes.h>
+
+#include <vector>
+
+#include "dso.h"
+#include "thread_tree.h"
+
+namespace simpleperf {
+
+struct CallChainReportEntry {
+  uint64_t ip = 0;
+  const Symbol* symbol = nullptr;
+  Dso* dso = nullptr;
+  const char* dso_name = nullptr;
+  uint64_t vaddr_in_file = 0;
+  const MapEntry* map = nullptr;
+};
+
+class CallChainReportBuilder {
+ public:
+  CallChainReportBuilder(ThreadTree& thread_tree) : thread_tree_(thread_tree) {}
+  // If true, remove interpreter frames both before and after a Java frame.
+  // Default is true.
+  void SetRemoveArtFrame(bool enable) { remove_art_frame_ = enable; }
+  // If true, convert a JIT method into its corresponding interpreted Java method. So they can be
+  // merged in reports like flamegraph. Default is true.
+  void SetConvertJITFrame(bool enable) { convert_jit_frame_ = enable; }
+  std::vector<CallChainReportEntry> Build(const ThreadEntry* thread,
+                                          const std::vector<uint64_t>& ips, size_t kernel_ip_count);
+
+ private:
+  struct JavaMethod {
+    Dso* dso;
+    const Symbol* symbol;
+    JavaMethod(Dso* dso, const Symbol* symbol) : dso(dso), symbol(symbol) {}
+  };
+
+  void ConvertJITFrame(std::vector<CallChainReportEntry>& callchain);
+  void CollectJavaMethods();
+
+  ThreadTree& thread_tree_;
+  bool remove_art_frame_ = true;
+  bool convert_jit_frame_ = true;
+  bool java_method_initialized_ = false;
+  std::unordered_map<std::string, JavaMethod> java_method_map_;
+};
+
+}  // namespace simpleperf