Add analyzer support for multiple processes.

base/debug/activity_analyzer_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/debug/activity_analyzer.h"
 
 #include <atomic>
 #include <memory>
 
+#include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/debug/activity_tracker.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ptr_util.h"
 #include "base/pending_task.h"
 #include "base/process/process.h"
 #include "base/stl_util.h"
@@ skipping 38 matching lines @@
       global_tracker->ReleaseTrackerForCurrentThreadForTesting();
       delete global_tracker;
     }
   }
 
   std::unique_ptr<ThreadActivityTracker> CreateActivityTracker() {
     std::unique_ptr<char[]> memory(new char[kStackSize]);
     return MakeUnique<TestActivityTracker>(std::move(memory), kStackSize);
   }
 
+  template <typename Function>
+  void AsOtherProcess(int64_t pid, Function function) {
+    std::unique_ptr<GlobalActivityTracker> old_global =
+        GlobalActivityTracker::ReleaseForTesting();
+    ASSERT_TRUE(old_global);
+
+    PersistentMemoryAllocator* old_allocator = old_global->allocator();
+    std::unique_ptr<PersistentMemoryAllocator> new_allocator(
+        MakeUnique<PersistentMemoryAllocator>(
+            const_cast<void*>(old_allocator->data()), old_allocator->size(), 0,
+            0, "", false));
+    GlobalActivityTracker::CreateWithAllocator(std::move(new_allocator), 3,
+                                               pid);
+
+    function();
+
+    GlobalActivityTracker::ReleaseForTesting();
+    GlobalActivityTracker::SetForTesting(std::move(old_global));
+  }
+
   static void DoNothing() {}
 };
 
 TEST_F(ActivityAnalyzerTest, ThreadAnalyzerConstruction) {
   std::unique_ptr<ThreadActivityTracker> tracker = CreateActivityTracker();
   {
     ThreadActivityAnalyzer analyzer(*tracker);
     EXPECT_TRUE(analyzer.IsValid());
     EXPECT_EQ(PlatformThread::GetName(), analyzer.GetThreadName());
   }
@@ skipping 53 matching lines @@
 
   std::atomic<bool> ready_;
   std::atomic<bool> exit_;
   Lock lock_;
   ConditionVariable exit_condition_;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleActivityThread);
 };
 
 TEST_F(ActivityAnalyzerTest, GlobalAnalyzerConstruction) {
-  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3);
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 0);
+  GlobalActivityTracker::Get()->process_data().SetString("foo", "bar");
 
   PersistentMemoryAllocator* allocator =
       GlobalActivityTracker::Get()->allocator();
   GlobalActivityAnalyzer analyzer(MakeUnique<PersistentMemoryAllocator>(
       const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
 
-  // The only thread at thois point is the test thread.
-  ThreadActivityAnalyzer* ta1 = analyzer.GetFirstAnalyzer();
+  // The only thread at this point is the test thread of this process.
+  const int64_t pid = analyzer.GetFirstProcess();
+  ASSERT_NE(0, pid);
+  ThreadActivityAnalyzer* ta1 = analyzer.GetFirstAnalyzer(pid);
   ASSERT_TRUE(ta1);
   EXPECT_FALSE(analyzer.GetNextAnalyzer());
   ThreadActivityAnalyzer::ThreadKey tk1 = ta1->GetThreadKey();
   EXPECT_EQ(ta1, analyzer.GetAnalyzerForThread(tk1));
+  EXPECT_EQ(0, analyzer.GetNextProcess());
 
   // Create a second thread that will do something.
   SimpleActivityThread t2("t2", nullptr, Activity::ACT_TASK,
                           ActivityData::ForTask(11));
   t2.Start();
   t2.WaitReady();
 
-  // Now there should be two.
-  EXPECT_TRUE(analyzer.GetFirstAnalyzer());
+  // Now there should be two. Calling GetFirstProcess invalidates any
+  // previously returned analyzer pointers.
+  ASSERT_EQ(pid, analyzer.GetFirstProcess());
+  EXPECT_TRUE(analyzer.GetFirstAnalyzer(pid));
   EXPECT_TRUE(analyzer.GetNextAnalyzer());
   EXPECT_FALSE(analyzer.GetNextAnalyzer());
+  EXPECT_EQ(0, analyzer.GetNextProcess());
 
   // Let thread exit.
   t2.Exit();
   t2.Join();
 
-  // Now there should be only one again. Calling GetFirstAnalyzer invalidates
-  // any previously returned analyzer pointers.
-  ThreadActivityAnalyzer* ta2 = analyzer.GetFirstAnalyzer();
+  // Now there should be only one again.
+  ASSERT_EQ(pid, analyzer.GetFirstProcess());
+  ThreadActivityAnalyzer* ta2 = analyzer.GetFirstAnalyzer(pid);
   ASSERT_TRUE(ta2);
   EXPECT_FALSE(analyzer.GetNextAnalyzer());
   ThreadActivityAnalyzer::ThreadKey tk2 = ta2->GetThreadKey();
   EXPECT_EQ(ta2, analyzer.GetAnalyzerForThread(tk2));
   EXPECT_EQ(tk1, tk2);
+  EXPECT_EQ(0, analyzer.GetNextProcess());
+
+  // Verify that there is process data.
+  const ActivityUserData::Snapshot& data_snapshot =
+      analyzer.GetProcessDataSnapshot(pid);
+  ASSERT_LE(1U, data_snapshot.size());
+  EXPECT_EQ("bar", data_snapshot.at("foo").GetString());
 }
 
 TEST_F(ActivityAnalyzerTest, UserDataSnapshotTest) {
-  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3);
-  ThreadActivityAnalyzer::Snapshot snapshot;
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 0);
+  ThreadActivityAnalyzer::Snapshot tracker_snapshot;
 
   const char string1a[] = "string1a";
   const char string1b[] = "string1b";
   const char string2a[] = "string2a";
   const char string2b[] = "string2b";
 
   PersistentMemoryAllocator* allocator =
       GlobalActivityTracker::Get()->allocator();
   GlobalActivityAnalyzer global_analyzer(MakeUnique<PersistentMemoryAllocator>(
       const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
@@ skipping 18 matching lines @@
       ActivityUserData& user_data2 = activity2.user_data();
       user_data2.Set("raw2", "foo2", 4);
       user_data2.SetString("string2", "bar2");
       user_data2.SetChar("char2", '2');
       user_data2.SetInt("int2", -2222);
       user_data2.SetUint("uint2", 2222);
       user_data2.SetBool("bool2", false);
       user_data2.SetReference("ref2", string2a, sizeof(string2a));
       user_data2.SetStringReference("sref2", string2b);
 
-      ASSERT_TRUE(tracker->CreateSnapshot(&snapshot));
-      ASSERT_EQ(2U, snapshot.activity_stack.size());
+      ASSERT_TRUE(tracker->CreateSnapshot(&tracker_snapshot));
+      ASSERT_EQ(2U, tracker_snapshot.activity_stack.size());
 
       ThreadActivityAnalyzer analyzer(*tracker);
       analyzer.AddGlobalInformation(&global_analyzer);
-      const ThreadActivityAnalyzer::Snapshot& snapshot =
+      const ThreadActivityAnalyzer::Snapshot& analyzer_snapshot =
           analyzer.activity_snapshot();
-      ASSERT_EQ(2U, snapshot.user_data_stack.size());
+      ASSERT_EQ(2U, analyzer_snapshot.user_data_stack.size());
       const ActivityUserData::Snapshot& user_data =
-          snapshot.user_data_stack.at(1);
+          analyzer_snapshot.user_data_stack.at(1);
       EXPECT_EQ(8U, user_data.size());
       ASSERT_TRUE(ContainsKey(user_data, "raw2"));
       EXPECT_EQ("foo2", user_data.at("raw2").Get().as_string());
       ASSERT_TRUE(ContainsKey(user_data, "string2"));
       EXPECT_EQ("bar2", user_data.at("string2").GetString().as_string());
       ASSERT_TRUE(ContainsKey(user_data, "char2"));
       EXPECT_EQ('2', user_data.at("char2").GetChar());
       ASSERT_TRUE(ContainsKey(user_data, "int2"));
       EXPECT_EQ(-2222, user_data.at("int2").GetInt());
       ASSERT_TRUE(ContainsKey(user_data, "uint2"));
       EXPECT_EQ(2222U, user_data.at("uint2").GetUint());
       ASSERT_TRUE(ContainsKey(user_data, "bool2"));
       EXPECT_FALSE(user_data.at("bool2").GetBool());
       ASSERT_TRUE(ContainsKey(user_data, "ref2"));
       EXPECT_EQ(string2a, user_data.at("ref2").GetReference().data());
       EXPECT_EQ(sizeof(string2a), user_data.at("ref2").GetReference().size());
       ASSERT_TRUE(ContainsKey(user_data, "sref2"));
       EXPECT_EQ(string2b, user_data.at("sref2").GetStringReference().data());
       EXPECT_EQ(strlen(string2b),
                 user_data.at("sref2").GetStringReference().size());
     }
 
-    ASSERT_TRUE(tracker->CreateSnapshot(&snapshot));
-    ASSERT_EQ(1U, snapshot.activity_stack.size());
+    ASSERT_TRUE(tracker->CreateSnapshot(&tracker_snapshot));
+    ASSERT_EQ(1U, tracker_snapshot.activity_stack.size());
 
     ThreadActivityAnalyzer analyzer(*tracker);
     analyzer.AddGlobalInformation(&global_analyzer);
-    const ThreadActivityAnalyzer::Snapshot& snapshot =
+    const ThreadActivityAnalyzer::Snapshot& analyzer_snapshot =
         analyzer.activity_snapshot();
-    ASSERT_EQ(1U, snapshot.user_data_stack.size());
+    ASSERT_EQ(1U, analyzer_snapshot.user_data_stack.size());
     const ActivityUserData::Snapshot& user_data =
-        snapshot.user_data_stack.at(0);
+        analyzer_snapshot.user_data_stack.at(0);
     EXPECT_EQ(8U, user_data.size());
     EXPECT_EQ("foo1", user_data.at("raw1").Get().as_string());
     EXPECT_EQ("bar1", user_data.at("string1").GetString().as_string());
     EXPECT_EQ('1', user_data.at("char1").GetChar());
     EXPECT_EQ(-1111, user_data.at("int1").GetInt());
     EXPECT_EQ(1111U, user_data.at("uint1").GetUint());
     EXPECT_TRUE(user_data.at("bool1").GetBool());
     EXPECT_EQ(string1a, user_data.at("ref1").GetReference().data());
     EXPECT_EQ(sizeof(string1a), user_data.at("ref1").GetReference().size());
     EXPECT_EQ(string1b, user_data.at("sref1").GetStringReference().data());
     EXPECT_EQ(strlen(string1b),
               user_data.at("sref1").GetStringReference().size());
   }
 
-  ASSERT_TRUE(tracker->CreateSnapshot(&snapshot));
-  ASSERT_EQ(0U, snapshot.activity_stack.size());
+  ASSERT_TRUE(tracker->CreateSnapshot(&tracker_snapshot));
+  ASSERT_EQ(0U, tracker_snapshot.activity_stack.size());
 }
 
 TEST_F(ActivityAnalyzerTest, GlobalUserDataTest) {
-  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3);
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 0);
 
   const char string1[] = "foo";
   const char string2[] = "bar";
 
   PersistentMemoryAllocator* allocator =
       GlobalActivityTracker::Get()->allocator();
   GlobalActivityAnalyzer global_analyzer(MakeUnique<PersistentMemoryAllocator>(
       const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
 
   ActivityUserData& global_data = GlobalActivityTracker::Get()->global_data();
   global_data.Set("raw", "foo", 3);
   global_data.SetString("string", "bar");
   global_data.SetChar("char", '9');
   global_data.SetInt("int", -9999);
   global_data.SetUint("uint", 9999);
   global_data.SetBool("bool", true);
   global_data.SetReference("ref", string1, sizeof(string1));
   global_data.SetStringReference("sref", string2);
 
-  ActivityUserData::Snapshot snapshot =
-      global_analyzer.GetGlobalUserDataSnapshot();
+  const ActivityUserData::Snapshot& snapshot =
+      global_analyzer.GetGlobalDataSnapshot();
   ASSERT_TRUE(ContainsKey(snapshot, "raw"));
   EXPECT_EQ("foo", snapshot.at("raw").Get().as_string());
   ASSERT_TRUE(ContainsKey(snapshot, "string"));
   EXPECT_EQ("bar", snapshot.at("string").GetString().as_string());
   ASSERT_TRUE(ContainsKey(snapshot, "char"));
   EXPECT_EQ('9', snapshot.at("char").GetChar());
   ASSERT_TRUE(ContainsKey(snapshot, "int"));
   EXPECT_EQ(-9999, snapshot.at("int").GetInt());
   ASSERT_TRUE(ContainsKey(snapshot, "uint"));
   EXPECT_EQ(9999U, snapshot.at("uint").GetUint());
   ASSERT_TRUE(ContainsKey(snapshot, "bool"));
   EXPECT_TRUE(snapshot.at("bool").GetBool());
   ASSERT_TRUE(ContainsKey(snapshot, "ref"));
   EXPECT_EQ(string1, snapshot.at("ref").GetReference().data());
   EXPECT_EQ(sizeof(string1), snapshot.at("ref").GetReference().size());
   ASSERT_TRUE(ContainsKey(snapshot, "sref"));
   EXPECT_EQ(string2, snapshot.at("sref").GetStringReference().data());
   EXPECT_EQ(strlen(string2), snapshot.at("sref").GetStringReference().size());
 }
 
 TEST_F(ActivityAnalyzerTest, GlobalModulesTest) {
-  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3);
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 0);
 
   PersistentMemoryAllocator* allocator =
       GlobalActivityTracker::Get()->allocator();
   GlobalActivityAnalyzer global_analyzer(MakeUnique<PersistentMemoryAllocator>(
       const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
 
   GlobalActivityTracker::ModuleInfo info1;
   info1.is_loaded = true;
   info1.address = 0x12345678;
   info1.load_time = 1111;
@@ skipping 55 matching lines @@
   EXPECT_NE(info2.load_time, stored2.load_time);
   EXPECT_EQ(info2.size, stored2.size);
   EXPECT_EQ(info2.timestamp, stored2.timestamp);
   EXPECT_EQ(info2.age, stored2.age);
   EXPECT_EQ(info2.identifier[0], stored2.identifier[0]);
   EXPECT_EQ(info2.file, stored2.file);
   EXPECT_EQ(info2.debug_file, stored2.debug_file);
 }
 
 TEST_F(ActivityAnalyzerTest, GlobalLogMessages) {
-  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3);
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 0);
 
   PersistentMemoryAllocator* allocator =
       GlobalActivityTracker::Get()->allocator();
   GlobalActivityAnalyzer analyzer(MakeUnique<PersistentMemoryAllocator>(
       const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
 
   GlobalActivityTracker::Get()->RecordLogMessage("hello world");
   GlobalActivityTracker::Get()->RecordLogMessage("foo bar");
 
   std::vector<std::string> messages = analyzer.GetLogMessages();
   ASSERT_EQ(2U, messages.size());
   EXPECT_EQ("hello world", messages[0]);
   EXPECT_EQ("foo bar", messages[1]);
 }
 
+TEST_F(ActivityAnalyzerTest, GlobalMultiProcess) {
+  GlobalActivityTracker::CreateWithLocalMemory(kMemorySize, 0, "", 3, 1001);
+  GlobalActivityTracker* global = GlobalActivityTracker::Get();
+  PersistentMemoryAllocator* allocator = global->allocator();
+  EXPECT_EQ(1001, global->process_id());
+
+  int64_t process_id;
+  int64_t create_stamp;
+  ActivityUserData::GetOwningProcessId(
+      GlobalActivityTracker::Get()->process_data().GetBaseAddress(),
+      &process_id, &create_stamp);
+  ASSERT_EQ(1001, process_id);
+
+  GlobalActivityTracker::Get()->process_data().SetInt("pid",
+                                                      global->process_id());
+
+  GlobalActivityAnalyzer analyzer(MakeUnique<PersistentMemoryAllocator>(
+      const_cast<void*>(allocator->data()), allocator->size(), 0, 0, "", true));
+
+  AsOtherProcess(2002, [&global]() {
+    ASSERT_NE(global, GlobalActivityTracker::Get());
+    EXPECT_EQ(2002, GlobalActivityTracker::Get()->process_id());
+
+    int64_t process_id;
+    int64_t create_stamp;
+    ActivityUserData::GetOwningProcessId(
+        GlobalActivityTracker::Get()->process_data().GetBaseAddress(),
+        &process_id, &create_stamp);
+    ASSERT_EQ(2002, process_id);
+
+    GlobalActivityTracker::Get()->process_data().SetInt(
+        "pid", GlobalActivityTracker::Get()->process_id());
+  });
+  ASSERT_EQ(global, GlobalActivityTracker::Get());
+  EXPECT_EQ(1001, GlobalActivityTracker::Get()->process_id());
+
+  const int64_t pid1 = analyzer.GetFirstProcess();
+  ASSERT_EQ(1001, pid1);
+  const int64_t pid2 = analyzer.GetNextProcess();
+  ASSERT_EQ(2002, pid2);
+  EXPECT_EQ(0, analyzer.GetNextProcess());
+
+  const ActivityUserData::Snapshot& pdata1 =
+      analyzer.GetProcessDataSnapshot(pid1);
+  const ActivityUserData::Snapshot& pdata2 =
+      analyzer.GetProcessDataSnapshot(pid2);
+  EXPECT_EQ(1001, pdata1.at("pid").GetInt());
+  EXPECT_EQ(2002, pdata2.at("pid").GetInt());
+}
+
 }  // namespace debug
 }  // namespace base