Import logging utilities from FXL. (#5310)

fml/BUILD.gn

@@ -7,19 +7,26 @@ source_set("fml") {
     "build_config.h",
     "compiler_specific.h",
     "eintr_wrapper.h",
+    "export.h",
     "file.h",
     "icu_util.cc",
     "icu_util.h",
+    "log_level.h",
+    "log_settings.cc",
+    "log_settings.h",
+    "log_settings_state.cc",
+    "logging.cc",
+    "logging.h",
     "mapping.cc",
     "mapping.h",
-    "memory/thread_checker.h",
-    "memory/weak_ptr.h",
-    "memory/weak_ptr_internal.cc",
-    "memory/weak_ptr_internal.h",
     "memory/ref_counted.h",
     "memory/ref_counted_internal.h",
     "memory/ref_ptr.h",
     "memory/ref_ptr_internal.h",
+    "memory/thread_checker.h",
+    "memory/weak_ptr.h",
+    "memory/weak_ptr_internal.cc",
+    "memory/weak_ptr_internal.h",
     "message_loop.cc",
     "message_loop.h",
     "message_loop_impl.cc",
@@ -136,8 +143,8 @@ executable("fml_unittests") {
   testonly = true
 
   sources = [
-    "memory/weak_ptr_unittest.cc",
     "memory/ref_counted_unittest.cc",
+    "memory/weak_ptr_unittest.cc",
     "message_loop_unittests.cc",
     "thread_local_unittests.cc",
     "thread_unittests.cc",

fml/export.h

+// Copyright 2017 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_FML_EXPORT_H_
+#define FLUTTER_FML_EXPORT_H_
+
+#include "flutter/fml/build_config.h"
+
+#if OS_WIN
+#define FML_EXPORT __declspec(dllimport)
+#else
+#define FML_EXPORT __attribute__((visibility("default")))
+#endif
+
+#endif  // FLUTTER_FML_EXPORT_H_

fml/icu_util.cc

@@ -8,9 +8,9 @@
 #include <mutex>
 
 #include "flutter/fml/build_config.h"
+#include "flutter/fml/logging.h"
 #include "flutter/fml/mapping.h"
 #include "flutter/fml/paths.h"
-#include "lib/fxl/logging.h"
 #include "third_party/icu/source/common/unicode/udata.h"
 
 namespace fml {
@@ -92,7 +92,7 @@ class ICUContext {
 
 void InitializeICUOnce(const std::string& icu_data_path) {
   static ICUContext* context = new ICUContext(icu_data_path);
-  FXL_CHECK(context->IsValid())
+  FML_CHECK(context->IsValid())
       << "Must be able to initialize the ICU context. Tried: " << icu_data_path;
 }
 

fml/log_level.h

+// Copyright 2016 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_FML_LOG_LEVEL_H_
+#define FLUTTER_FML_LOG_LEVEL_H_
+
+namespace fml {
+
+typedef int LogSeverity;
+
+// Default log levels. Negative values can be used for verbose log levels.
+constexpr LogSeverity LOG_INFO = 0;
+constexpr LogSeverity LOG_WARNING = 1;
+constexpr LogSeverity LOG_ERROR = 2;
+constexpr LogSeverity LOG_FATAL = 3;
+constexpr LogSeverity LOG_NUM_SEVERITIES = 4;
+
+// LOG_DFATAL is LOG_FATAL in debug mode, ERROR in normal mode
+#ifdef NDEBUG
+const LogSeverity LOG_DFATAL = LOG_ERROR;
+#else
+const LogSeverity LOG_DFATAL = LOG_FATAL;
+#endif
+
+}  // namespace fml
+
+#endif  // FLUTTER_FML_LOG_LEVEL_H_

fml/log_settings.cc

+// Copyright 2016 The Fuchsia 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 "flutter/fml/log_settings.h"
+
+#include <fcntl.h>
+#include <string.h>
+
+#include <algorithm>
+#include <iostream>
+
+#include "flutter/fml/logging.h"
+
+namespace fml {
+namespace state {
+
+// Defined in log_settings_state.cc.
+extern LogSettings g_log_settings;
+
+}  // namespace state
+
+void SetLogSettings(const LogSettings& settings) {
+  // Validate the new settings as we set them.
+  state::g_log_settings.min_log_level =
+      std::min(LOG_FATAL, settings.min_log_level);
+}
+
+LogSettings GetLogSettings() {
+  return state::g_log_settings;
+}
+
+int GetMinLogLevel() {
+  return std::min(state::g_log_settings.min_log_level, LOG_FATAL);
+}
+
+}  // namespace fml

fml/log_settings.h

+// Copyright 2016 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_FML_LOG_SETTINGS_H_
+#define FLUTTER_FML_LOG_SETTINGS_H_
+
+#include "flutter/fml/log_level.h"
+
+#include <string>
+
+namespace fml {
+
+// Settings which control the behavior of FML logging.
+struct LogSettings {
+  // The minimum logging level.
+  // Anything at or above this level will be logged (if applicable).
+  // Anything below this level will be silently ignored.
+  //
+  // The log level defaults to 0 (LOG_INFO).
+  //
+  // Log messages for FML_VLOG(x) (from flutter/fml/logging.h) are logged
+  // at level -x, so setting the min log level to negative values enables
+  // verbose logging.
+  LogSeverity min_log_level = LOG_INFO;
+};
+
+// Gets the active log settings for the current process.
+void SetLogSettings(const LogSettings& settings);
+
+// Sets the active log settings for the current process.
+LogSettings GetLogSettings();
+
+// Gets the minimum log level for the current process. Never returs a value
+// higher than LOG_FATAL.
+int GetMinLogLevel();
+
+}  // namespace fml
+
+#endif  // FLUTTER_FML_LOG_SETTINGS_H_

fml/log_settings_state.cc

+// Copyright 2016 The Fuchsia 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 "flutter/fml/log_settings.h"
+
+namespace fml {
+namespace state {
+
+// Declared in log_settings.cc.
+LogSettings g_log_settings;
+
+}  // namespace state
+}  // namespace fml

fml/logging.cc

+// Copyright 2016 The Fuchsia 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 <algorithm>
+#include <iostream>
+
+#include "flutter/fml/build_config.h"
+#include "flutter/fml/log_settings.h"
+#include "flutter/fml/logging.h"
+
+#if defined(OS_ANDROID)
+#include <android/log.h>
+#elif defined(OS_IOS)
+#include <syslog.h>
+#endif
+
+namespace fml {
+namespace {
+
+const char* const kLogSeverityNames[LOG_NUM_SEVERITIES] = {"INFO", "WARNING",
+                                                           "ERROR", "FATAL"};
+
+const char* GetNameForLogSeverity(LogSeverity severity) {
+  if (severity >= LOG_INFO && severity < LOG_NUM_SEVERITIES)
+    return kLogSeverityNames[severity];
+  return "UNKNOWN";
+}
+
+const char* StripDots(const char* path) {
+  while (strncmp(path, "../", 3) == 0)
+    path += 3;
+  return path;
+}
+
+const char* StripPath(const char* path) {
+  auto p = strrchr(path, '/');
+  if (p)
+    return p + 1;
+  else
+    return path;
+}
+
+}  // namespace
+
+LogMessage::LogMessage(LogSeverity severity,
+                       const char* file,
+                       int line,
+                       const char* condition)
+    : severity_(severity), file_(file), line_(line) {
+  stream_ << "[";
+  if (severity >= LOG_INFO)
+    stream_ << GetNameForLogSeverity(severity);
+  else
+    stream_ << "VERBOSE" << -severity;
+  stream_ << ":" << (severity > LOG_INFO ? StripDots(file_) : StripPath(file_))
+          << "(" << line_ << ")] ";
+
+  if (condition)
+    stream_ << "Check failed: " << condition << ". ";
+}
+
+LogMessage::~LogMessage() {
+  stream_ << std::endl;
+
+#if defined(OS_ANDROID)
+  android_LogPriority priority =
+      (severity_ < 0) ? ANDROID_LOG_VERBOSE : ANDROID_LOG_UNKNOWN;
+  switch (severity_) {
+    case LOG_INFO:
+      priority = ANDROID_LOG_INFO;
+      break;
+    case LOG_WARNING:
+      priority = ANDROID_LOG_WARN;
+      break;
+    case LOG_ERROR:
+      priority = ANDROID_LOG_ERROR;
+      break;
+    case LOG_FATAL:
+      priority = ANDROID_LOG_FATAL;
+      break;
+  }
+  __android_log_write(priority, "flutter", stream_.str().c_str());
+#elif defined(OS_IOS)
+  syslog(LOG_ALERT, "%s", stream_.str().c_str());
+#else
+  std::cerr << stream_.str();
+  std::cerr.flush();
+#endif
+
+  if (severity_ >= LOG_FATAL) {
+    abort();
+  }
+}
+
+int GetVlogVerbosity() {
+  return std::max(-1, LOG_INFO - GetMinLogLevel());
+}
+
+bool ShouldCreateLogMessage(LogSeverity severity) {
+  return severity >= GetMinLogLevel();
+}
+
+}  // namespace fml

fml/logging.h

+// Copyright 2016 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_FML_LOGGING_H_
+#define FLUTTER_FML_LOGGING_H_
+
+#include <sstream>
+
+#include "flutter/fml/log_level.h"
+#include "flutter/fml/macros.h"
+
+namespace fml {
+
+class LogMessageVoidify {
+ public:
+  void operator&(std::ostream&) {}
+};
+
+class LogMessage {
+ public:
+  LogMessage(LogSeverity severity,
+             const char* file,
+             int line,
+             const char* condition);
+  ~LogMessage();
+
+  std::ostream& stream() { return stream_; }
+
+ private:
+  std::ostringstream stream_;
+  const LogSeverity severity_;
+  const char* file_;
+  const int line_;
+
+  FML_DISALLOW_COPY_AND_ASSIGN(LogMessage);
+};
+
+// Gets the FML_VLOG default verbosity level.
+int GetVlogVerbosity();
+
+// Returns true if |severity| is at or above the current minimum log level.
+// LOG_FATAL and above is always true.
+bool ShouldCreateLogMessage(LogSeverity severity);
+
+}  // namespace fml
+
+#define FML_LOG_STREAM(severity) \
+  ::fml::LogMessage(::fml::LOG_##severity, __FILE__, __LINE__, nullptr).stream()
+
+#define FML_LAZY_STREAM(stream, condition) \
+  !(condition) ? (void)0 : ::fml::LogMessageVoidify() & (stream)
+
+#define FML_EAT_STREAM_PARAMETERS(ignored) \
+  true || (ignored)                        \
+      ? (void)0                            \
+      : ::fml::LogMessageVoidify() &       \
+            ::fml::LogMessage(::fml::LOG_FATAL, 0, 0, nullptr).stream()
+
+#define FML_LOG_IS_ON(severity) \
+  (::fml::ShouldCreateLogMessage(::fml::LOG_##severity))
+
+#define FML_LOG(severity) \
+  FML_LAZY_STREAM(FML_LOG_STREAM(severity), FML_LOG_IS_ON(severity))
+
+#define FML_CHECK(condition)                                              \
+  FML_LAZY_STREAM(                                                        \
+      ::fml::LogMessage(::fml::LOG_FATAL, __FILE__, __LINE__, #condition) \
+          .stream(),                                                      \
+      !(condition))
+
+#define FML_VLOG_IS_ON(verbose_level) \
+  ((verbose_level) <= ::fml::GetVlogVerbosity())
+
+// The VLOG macros log with negative verbosities.
+#define FML_VLOG_STREAM(verbose_level) \
+  ::fml::LogMessage(-verbose_level, __FILE__, __LINE__, nullptr).stream()
+
+#define FML_VLOG(verbose_level) \
+  FML_LAZY_STREAM(FML_VLOG_STREAM(verbose_level), FML_VLOG_IS_ON(verbose_level))
+
+#ifndef NDEBUG
+#define FML_DLOG(severity) FML_LOG(severity)
+#define FML_DCHECK(condition) FML_CHECK(condition)
+#else
+#define FML_DLOG(severity) FML_EAT_STREAM_PARAMETERS(true)
+#define FML_DCHECK(condition) FML_EAT_STREAM_PARAMETERS(condition)
+#endif
+
+#define FML_NOTREACHED() FML_DCHECK(false)
+
+#define FML_NOTIMPLEMENTED() \
+  FML_LOG(ERROR) << "Not implemented in: " << __PRETTY_FUNCTION__
+
+#endif  // FLUTTER_FML_LOGGING_H_

fml/memory/ref_counted_internal.h

@@ -9,8 +9,8 @@
 
 #include <atomic>
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/macros.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 namespace internal {
@@ -20,8 +20,8 @@ class RefCountedThreadSafeBase {
  public:
   void AddRef() const {
 #ifndef NDEBUG
-    FXL_DCHECK(!adoption_required_);
-    FXL_DCHECK(!destruction_started_);
+    FML_DCHECK(!adoption_required_);
+    FML_DCHECK(!destruction_started_);
 #endif
     ref_count_.fetch_add(1u, std::memory_order_relaxed);
   }
@@ -30,7 +30,7 @@ class RefCountedThreadSafeBase {
     return ref_count_.load(std::memory_order_acquire) == 1u;
   }
 
-  void AssertHasOneRef() const { FXL_DCHECK(HasOneRef()); }
+  void AssertHasOneRef() const { FML_DCHECK(HasOneRef()); }
 
  protected:
   RefCountedThreadSafeBase();
@@ -39,10 +39,10 @@ class RefCountedThreadSafeBase {
   // Returns true if the object should self-delete.
   bool Release() const {
 #ifndef NDEBUG
-    FXL_DCHECK(!adoption_required_);
-    FXL_DCHECK(!destruction_started_);
+    FML_DCHECK(!adoption_required_);
+    FML_DCHECK(!destruction_started_);
 #endif
-    FXL_DCHECK(ref_count_.load(std::memory_order_acquire) != 0u);
+    FML_DCHECK(ref_count_.load(std::memory_order_acquire) != 0u);
     // TODO(vtl): We could add the following:
     //     if (ref_count_.load(std::memory_order_relaxed) == 1u) {
     // #ifndef NDEBUG
@@ -67,7 +67,7 @@ class RefCountedThreadSafeBase {
 
 #ifndef NDEBUG
   void Adopt() {
-    FXL_DCHECK(adoption_required_);
+    FML_DCHECK(adoption_required_);
     adoption_required_ = false;
   }
 #endif
@@ -95,9 +95,9 @@ inline RefCountedThreadSafeBase::RefCountedThreadSafeBase()
 
 inline RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
 #ifndef NDEBUG
-  FXL_DCHECK(!adoption_required_);
+  FML_DCHECK(!adoption_required_);
   // Should only be destroyed as a result of |Release()|.
-  FXL_DCHECK(destruction_started_);
+  FML_DCHECK(destruction_started_);
 #endif
 }
 

fml/memory/ref_ptr.h

@@ -12,9 +12,9 @@
 #include <functional>
 #include <utility>
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/macros.h"
 #include "flutter/fml/memory/ref_ptr_internal.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 
@@ -107,12 +107,12 @@ class RefPtr final {
   T* get() const { return ptr_; }
 
   T& operator*() const {
-    FXL_DCHECK(ptr_);
+    FML_DCHECK(ptr_);
     return *ptr_;
   }
 
   T* operator->() const {
-    FXL_DCHECK(ptr_);
+    FML_DCHECK(ptr_);
     return ptr_;
   }
 
@@ -189,7 +189,7 @@ class RefPtr final {
   friend RefPtr<T> AdoptRef<T>(T*);
 
   enum AdoptTag { ADOPT };
-  RefPtr(T* ptr, AdoptTag) : ptr_(ptr) { FXL_DCHECK(ptr_); }
+  RefPtr(T* ptr, AdoptTag) : ptr_(ptr) { FML_DCHECK(ptr_); }
 
   T* ptr_;
 };

fml/memory/thread_checker.h

@@ -16,8 +16,8 @@
 #include <pthread.h>
 #endif
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/macros.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 
@@ -58,7 +58,7 @@ class ThreadChecker final {
 #ifndef NDEBUG
 #define FML_DECLARE_THREAD_CHECKER(c) fml::ThreadChecker c
 #define FML_DCHECK_CREATION_THREAD_IS_CURRENT(c) \
-  FXL_DCHECK((c).IsCreationThreadCurrent())
+  FML_DCHECK((c).IsCreationThreadCurrent())
 #else
 #define FML_DECLARE_THREAD_CHECKER(c)
 #define FML_DCHECK_CREATION_THREAD_IS_CURRENT(c) ((void)0)

fml/memory/weak_ptr.h

@@ -10,10 +10,10 @@
 
 #include <utility>
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/memory/ref_counted.h"
 #include "flutter/fml/memory/thread_checker.h"
 #include "flutter/fml/memory/weak_ptr_internal.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 
@@ -86,13 +86,13 @@ class WeakPtr {
 
   T& operator*() const {
     FML_DCHECK_CREATION_THREAD_IS_CURRENT(checker_.checker);
-    FXL_DCHECK(*this);
+    FML_DCHECK(*this);
     return *get();
   }
 
   T* operator->() const {
     FML_DCHECK_CREATION_THREAD_IS_CURRENT(checker_.checker);
-    FXL_DCHECK(*this);
+    FML_DCHECK(*this);
     return get();
   }
 
@@ -161,7 +161,7 @@ class WeakPtrFactory {
  public:
   explicit WeakPtrFactory(T* ptr)
       : ptr_(ptr), flag_(fml::MakeRefCounted<fml::internal::WeakPtrFlag>()) {
-    FXL_DCHECK(ptr_);
+    FML_DCHECK(ptr_);
   }
 
   ~WeakPtrFactory() {

fml/memory/weak_ptr_internal.cc

@@ -4,7 +4,7 @@
 
 #include "flutter/fml/memory/weak_ptr_internal.h"
 
-#include "lib/fxl/logging.h"
+#include "flutter/fml/logging.h"
 
 namespace fml {
 namespace internal {
@@ -13,12 +13,12 @@ WeakPtrFlag::WeakPtrFlag() : is_valid_(true) {}
 
 WeakPtrFlag::~WeakPtrFlag() {
   // Should be invalidated before destruction.
-  FXL_DCHECK(!is_valid_);
+  FML_DCHECK(!is_valid_);
 }
 
 void WeakPtrFlag::Invalidate() {
   // Invalidation should happen exactly once.
-  FXL_DCHECK(is_valid_);
+  FML_DCHECK(is_valid_);
   is_valid_ = false;
 }
 

fml/memory/weak_ptr_internal.h

@@ -19,7 +19,7 @@ namespace internal {
 // This class in not thread-safe, though references may be released on any
 // thread (allowing weak pointers to be destroyed/reset/reassigned on any
 // thread).
-class FXL_EXPORT WeakPtrFlag : public fml::RefCountedThreadSafe<WeakPtrFlag> {
+class WeakPtrFlag : public fml::RefCountedThreadSafe<WeakPtrFlag> {
  public:
   WeakPtrFlag();
 

fml/message_loop.cc

@@ -20,7 +20,7 @@ FML_THREAD_LOCAL ThreadLocal tls_message_loop([](intptr_t value) {
 
 MessageLoop& MessageLoop::GetCurrent() {
   auto loop = reinterpret_cast<MessageLoop*>(tls_message_loop.Get());
-  FXL_CHECK(loop != nullptr)
+  FML_CHECK(loop != nullptr)
       << "MessageLoop::EnsureInitializedForCurrentThread was not called on "
          "this thread prior to message loop use.";
   return *loop;
@@ -41,8 +41,8 @@ bool MessageLoop::IsInitializedForCurrentThread() {
 MessageLoop::MessageLoop()
     : loop_(MessageLoopImpl::Create()),
       task_runner_(fxl::MakeRefCounted<fml::TaskRunner>(loop_)) {
-  FXL_CHECK(loop_);
-  FXL_CHECK(task_runner_);
+  FML_CHECK(loop_);
+  FML_CHECK(task_runner_);
 }
 
 MessageLoop::~MessageLoop() = default;

fml/message_loop_impl.cc

@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "flutter/fml/build_config.h"
+#include "flutter/fml/logging.h"
 #include "flutter/fml/trace_event.h"
 
 #if OS_MACOSX
@@ -43,7 +44,7 @@ MessageLoopImpl::MessageLoopImpl() : order_(0), terminated_(false) {}
 MessageLoopImpl::~MessageLoopImpl() = default;
 
 void MessageLoopImpl::PostTask(fxl::Closure task, fxl::TimePoint target_time) {
-  FXL_DCHECK(task != nullptr);
+  FML_DCHECK(task != nullptr);
   RegisterTask(task, target_time);
 }
 
@@ -52,15 +53,15 @@ void MessageLoopImpl::RunExpiredTasksNow() {
 }
 
 void MessageLoopImpl::AddTaskObserver(intptr_t key, fxl::Closure callback) {
-  FXL_DCHECK(callback != nullptr);
-  FXL_DCHECK(MessageLoop::GetCurrent().GetLoopImpl().get() == this)
+  FML_DCHECK(callback != nullptr);
+  FML_DCHECK(MessageLoop::GetCurrent().GetLoopImpl().get() == this)
       << "Message loop task observer must be added on the same thread as the "
          "loop.";
   task_observers_[key] = std::move(callback);
 }
 
 void MessageLoopImpl::RemoveTaskObserver(intptr_t key) {
-  FXL_DCHECK(MessageLoop::GetCurrent().GetLoopImpl().get() == this)
+  FML_DCHECK(MessageLoop::GetCurrent().GetLoopImpl().get() == this)
       << "Message loop task observer must be removed from the same thread as "
          "the loop.";
   task_observers_.erase(key);
@@ -100,7 +101,7 @@ void MessageLoopImpl::DoTerminate() {
 
 void MessageLoopImpl::RegisterTask(fxl::Closure task,
                                    fxl::TimePoint target_time) {
-  FXL_DCHECK(task != nullptr);
+  FML_DCHECK(task != nullptr);
   if (terminated_) {
     // If the message loop has already been terminated, PostTask should destruct
     // |task| synchronously within this function.

fml/platform/android/jni_util.cc

@@ -7,26 +7,26 @@
 #include <codecvt>
 #include <string>
 
-#include "lib/fxl/logging.h"
+#include "flutter/fml/logging.h"
 
 namespace fml {
 namespace jni {
 
 static JavaVM* g_jvm = nullptr;
 
-#define ASSERT_NO_EXCEPTION() FXL_CHECK(env->ExceptionCheck() == JNI_FALSE);
+#define ASSERT_NO_EXCEPTION() FML_CHECK(env->ExceptionCheck() == JNI_FALSE);
 
 void InitJavaVM(JavaVM* vm) {
-  FXL_DCHECK(g_jvm == nullptr);
+  FML_DCHECK(g_jvm == nullptr);
   g_jvm = vm;
 }
 
 JNIEnv* AttachCurrentThread() {
-  FXL_DCHECK(g_jvm != nullptr)
+  FML_DCHECK(g_jvm != nullptr)
       << "Trying to attach to current thread without calling InitJavaVM first.";
   JNIEnv* env = nullptr;
   jint ret = g_jvm->AttachCurrentThread(&env, nullptr);
-  FXL_DCHECK(JNI_OK == ret);
+  FML_DCHECK(JNI_OK == ret);
   return env;
 }
 
@@ -97,10 +97,10 @@ std::vector<std::string> StringArrayToVector(JNIEnv* env, jobjectArray array) {
 ScopedJavaLocalRef<jobjectArray> VectorToStringArray(
     JNIEnv* env,
     const std::vector<std::string>& vector) {
-  FXL_DCHECK(env);
+  FML_DCHECK(env);
   ScopedJavaLocalRef<jclass> string_clazz(env,
                                           env->FindClass("java/lang/String"));
-  FXL_DCHECK(!string_clazz.is_null());
+  FML_DCHECK(!string_clazz.is_null());
   jobjectArray joa =
       env->NewObjectArray(vector.size(), string_clazz.obj(), NULL);
   ASSERT_NO_EXCEPTION();

fml/platform/android/jni_weak_ref.cc

@@ -4,8 +4,8 @@
 
 #include "flutter/fml/platform/android/jni_weak_ref.h"
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/platform/android/jni_util.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 namespace jni {
@@ -20,7 +20,7 @@ JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
 
 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj)
     : obj_(env->NewWeakGlobalRef(obj)) {
-  FXL_DCHECK(obj_);
+  FML_DCHECK(obj_);
 }
 
 JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() {
@@ -46,8 +46,9 @@ ScopedJavaLocalRef<jobject> GetRealObject(JNIEnv* env, jweak obj) {
   jobject real = NULL;
   if (obj) {
     real = env->NewLocalRef(obj);
-    if (!real)
-      FXL_DLOG(ERROR) << "The real object has been deleted!";
+    if (!real) {
+      FML_DLOG(ERROR) << "The real object has been deleted!";
+    }
   }
   return ScopedJavaLocalRef<jobject>(env, real);
 }

fml/platform/android/message_loop_android.cc

@@ -32,8 +32,8 @@ MessageLoopAndroid::MessageLoopAndroid()
     : looper_(AcquireLooperForThread()),
       timer_fd_(::timerfd_create(kClockType, TFD_NONBLOCK | TFD_CLOEXEC)),
       running_(false) {
-  FXL_CHECK(looper_.is_valid());
-  FXL_CHECK(timer_fd_.is_valid());
+  FML_CHECK(looper_.is_valid());
+  FML_CHECK(timer_fd_.is_valid());
 
   static const int kWakeEvents = ALOOPER_EVENT_INPUT;
 
@@ -51,16 +51,16 @@ MessageLoopAndroid::MessageLoopAndroid()
                                    read_event_fd,          // callback
                                    this                    // baton
   );
-  FXL_CHECK(add_result == 1);
+  FML_CHECK(add_result == 1);
 }
 
 MessageLoopAndroid::~MessageLoopAndroid() {
   int remove_result = ::ALooper_removeFd(looper_.get(), timer_fd_.get());
-  FXL_CHECK(remove_result == 1);
+  FML_CHECK(remove_result == 1);
 }
 
 void MessageLoopAndroid::Run() {
-  FXL_DCHECK(looper_.get() == ALooper_forThread());
+  FML_DCHECK(looper_.get() == ALooper_forThread());
 
   running_ = true;
 
@@ -84,7 +84,7 @@ void MessageLoopAndroid::Terminate() {
 
 void MessageLoopAndroid::WakeUp(fxl::TimePoint time_point) {
   bool result = TimerRearm(timer_fd_.get(), time_point);
-  FXL_DCHECK(result);
+  FML_DCHECK(result);
 }
 
 void MessageLoopAndroid::OnEventFired() {

fml/platform/android/scoped_java_ref.cc

@@ -4,8 +4,8 @@
 
 #include "flutter/fml/platform/android/scoped_java_ref.h"
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/platform/android/jni_util.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 namespace jni {
@@ -14,13 +14,13 @@ static const int kDefaultLocalFrameCapacity = 16;
 
 ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env) : env_(env) {
   int failed = env_->PushLocalFrame(kDefaultLocalFrameCapacity);
-  FXL_DCHECK(!failed);
+  FML_DCHECK(!failed);
 }
 
 ScopedJavaLocalFrame::ScopedJavaLocalFrame(JNIEnv* env, int capacity)
     : env_(env) {
   int failed = env_->PushLocalFrame(capacity);
-  FXL_DCHECK(!failed);
+  FML_DCHECK(!failed);
 }
 
 ScopedJavaLocalFrame::~ScopedJavaLocalFrame() {
@@ -31,7 +31,7 @@ JavaRef<jobject>::JavaRef() : obj_(NULL) {}
 
 JavaRef<jobject>::JavaRef(JNIEnv* env, jobject obj) : obj_(obj) {
   if (obj) {
-    FXL_DCHECK(env && env->GetObjectRefType(obj) == JNILocalRefType);
+    FML_DCHECK(env && env->GetObjectRefType(obj) == JNILocalRefType);
   }
 }
 
@@ -41,7 +41,7 @@ JNIEnv* JavaRef<jobject>::SetNewLocalRef(JNIEnv* env, jobject obj) {
   if (!env) {
     env = AttachCurrentThread();
   } else {
-    FXL_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
+    FML_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
   }
   if (obj)
     obj = env->NewLocalRef(obj);
@@ -55,7 +55,7 @@ void JavaRef<jobject>::SetNewGlobalRef(JNIEnv* env, jobject obj) {
   if (!env) {
     env = AttachCurrentThread();
   } else {
-    FXL_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
+    FML_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
   }
   if (obj)
     obj = env->NewGlobalRef(obj);
@@ -66,7 +66,7 @@ void JavaRef<jobject>::SetNewGlobalRef(JNIEnv* env, jobject obj) {
 
 void JavaRef<jobject>::ResetLocalRef(JNIEnv* env) {
   if (obj_) {
-    FXL_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
+    FML_DCHECK(env == AttachCurrentThread());  // Is |env| on correct thread.
     env->DeleteLocalRef(obj_);
     obj_ = NULL;
   }

fml/platform/darwin/message_loop_darwin.mm

@@ -7,13 +7,15 @@
 #include <CoreFoundation/CFRunLoop.h>
 #include <Foundation/Foundation.h>
 
+#include "flutter/fml/logging.h"
+
 namespace fml {
 
 static constexpr CFTimeInterval kDistantFuture = 1.0e10;
 
 MessageLoopDarwin::MessageLoopDarwin()
     : running_(false), loop_((CFRunLoopRef)CFRetain(CFRunLoopGetCurrent())) {
-  FXL_DCHECK(loop_ != nullptr);
+  FML_DCHECK(loop_ != nullptr);
 
   // Setup the delayed wake source.
   CFRunLoopTimerContext timer_context = {
@@ -25,7 +27,7 @@ MessageLoopDarwin::MessageLoopDarwin()
                            reinterpret_cast<CFRunLoopTimerCallBack>(&MessageLoopDarwin::OnTimerFire)
                            /* callout */,
                            &timer_context /* context */));
-  FXL_DCHECK(delayed_wake_timer_ != nullptr);
+  FML_DCHECK(delayed_wake_timer_ != nullptr);
   CFRunLoopAddTimer(loop_, delayed_wake_timer_, kCFRunLoopCommonModes);
 }
 
@@ -35,7 +37,7 @@ MessageLoopDarwin::~MessageLoopDarwin() {
 }
 
 void MessageLoopDarwin::Run() {
-  FXL_DCHECK(loop_ == CFRunLoopGetCurrent());
+  FML_DCHECK(loop_ == CFRunLoopGetCurrent());
 
   running_ = true;
 

fml/platform/linux/message_loop_linux.cc

@@ -18,15 +18,15 @@ MessageLoopLinux::MessageLoopLinux()
     : epoll_fd_(FML_HANDLE_EINTR(::epoll_create(1 /* unused */))),
       timer_fd_(::timerfd_create(kClockType, TFD_NONBLOCK | TFD_CLOEXEC)),
       running_(false) {
-  FXL_CHECK(epoll_fd_.is_valid());
-  FXL_CHECK(timer_fd_.is_valid());
+  FML_CHECK(epoll_fd_.is_valid());
+  FML_CHECK(timer_fd_.is_valid());
   bool added_source = AddOrRemoveTimerSource(true);
-  FXL_CHECK(added_source);
+  FML_CHECK(added_source);
 }
 
 MessageLoopLinux::~MessageLoopLinux() {
   bool removed_source = AddOrRemoveTimerSource(false);
-  FXL_CHECK(removed_source);
+  FML_CHECK(removed_source);
 }
 
 bool MessageLoopLinux::AddOrRemoveTimerSource(bool add) {
@@ -78,7 +78,7 @@ void MessageLoopLinux::Terminate() {
 
 void MessageLoopLinux::WakeUp(fxl::TimePoint time_point) {
   bool result = TimerRearm(timer_fd_.get(), time_point);
-  FXL_DCHECK(result);
+  FML_DCHECK(result);
 }
 
 void MessageLoopLinux::OnEventFired() {

fml/platform/win/message_loop_win.cc

@@ -8,7 +8,7 @@ namespace fml {
 
 MessageLoopWin::MessageLoopWin()
     : timer_(CreateWaitableTimer(NULL, FALSE, NULL)) {
-  FXL_CHECK(timer_.is_valid());
+  FML_CHECK(timer_.is_valid());
 }
 
 MessageLoopWin::~MessageLoopWin() = default;
@@ -17,7 +17,7 @@ void MessageLoopWin::Run() {
   running_ = true;
 
   while (running_) {
-    FXL_CHECK(WaitForSingleObject(timer_.get(), INFINITE) == 0);
+    FML_CHECK(WaitForSingleObject(timer_.get(), INFINITE) == 0);
     RunExpiredTasksNow();
   }
 }
@@ -33,7 +33,7 @@ void MessageLoopWin::WakeUp(fxl::TimePoint time_point) {
   if (time_point > now) {
     due_time.QuadPart = (time_point - now).ToNanoseconds() / -100;
   }
-  FXL_CHECK(SetWaitableTimer(timer_.get(), &due_time, 0, NULL, NULL, FALSE));
+  FML_CHECK(SetWaitableTimer(timer_.get(), &due_time, 0, NULL, NULL, FALSE));
 }
 
 }  // namespace fml

fml/task_runner.cc

@@ -8,6 +8,7 @@
 
 #include <utility>
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/message_loop.h"
 #include "flutter/fml/message_loop_impl.h"
 
@@ -15,7 +16,7 @@ namespace fml {
 
 TaskRunner::TaskRunner(fxl::RefPtr<MessageLoopImpl> loop)
     : loop_(std::move(loop)) {
-  FXL_CHECK(loop_);
+  FML_CHECK(loop_);
 }
 
 TaskRunner::~TaskRunner() = default;
@@ -42,7 +43,7 @@ bool TaskRunner::RunsTasksOnCurrentThread() {
 
 void TaskRunner::RunNowOrPostTask(fxl::RefPtr<fxl::TaskRunner> runner,
                                   fxl::Closure task) {
-  FXL_DCHECK(runner);
+  FML_DCHECK(runner);
   if (runner->RunsTasksOnCurrentThread()) {
     task();
   } else {

fml/thread_local.h

@@ -8,8 +8,8 @@
 #include <functional>
 
 #include "flutter/fml/build_config.h"
+#include "flutter/fml/logging.h"
 #include "flutter/fml/macros.h"
-#include "lib/fxl/logging.h"
 
 #define FML_THREAD_LOCAL_PTHREADS OS_MACOSX || OS_LINUX || OS_ANDROID
 
@@ -59,7 +59,7 @@ class ThreadLocal {
   };
 
   static inline void ThreadLocalDestroy(void* value) {
-    FXL_CHECK(value != nullptr);
+    FML_CHECK(value != nullptr);
     auto box = reinterpret_cast<Box*>(value);
     box->DestroyValue();
     delete box;
@@ -71,14 +71,14 @@ class ThreadLocal {
   ThreadLocal(ThreadLocalDestroyCallback destroy) : destroy_(destroy) {
     auto callback =
         reinterpret_cast<void (*)(void*)>(&ThreadLocal::ThreadLocalDestroy);
-    FXL_CHECK(pthread_key_create(&_key, callback) == 0);
+    FML_CHECK(pthread_key_create(&_key, callback) == 0);
   }
 
   void Set(intptr_t value) {
     auto box = reinterpret_cast<Box*>(pthread_getspecific(_key));
     if (box == nullptr) {
       box = new Box(destroy_, value);
-      FXL_CHECK(pthread_setspecific(_key, box) == 0);
+      FML_CHECK(pthread_setspecific(_key, box) == 0);
     } else {
       box->SetValue(value);
     }
@@ -99,7 +99,7 @@ class ThreadLocal {
     delete reinterpret_cast<Box*>(pthread_getspecific(_key));
 
     // Finally, collect the key
-    FXL_CHECK(pthread_key_delete(_key) == 0);
+    FML_CHECK(pthread_key_delete(_key) == 0);
   }
 
  private:

fml/thread_local_unittests.cc

@@ -4,6 +4,7 @@
 
 #include <thread>
 
+#include "flutter/fml/logging.h"
 #include "flutter/fml/thread_local.h"
 #include "gtest/gtest.h"
 

fml/unique_object.h

@@ -8,8 +8,8 @@
 #include <utility>
 
 #include "flutter/fml/compiler_specific.h"
+#include "flutter/fml/logging.h"
 #include "flutter/fml/macros.h"
-#include "lib/fxl/logging.h"
 
 namespace fml {
 
@@ -60,7 +60,7 @@ class UniqueObject {
   }
 
   void reset(const T& value = Traits::InvalidValue()) {
-    FXL_CHECK(data_.generic == Traits::InvalidValue() ||
+    FML_CHECK(data_.generic == Traits::InvalidValue() ||
               data_.generic != value);
     FreeIfNecessary();
     data_.generic = value;

travis/licenses_golden/licenses_flutter

@@ -655,6 +655,41 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ====================================================================================================
 
+====================================================================================================
+LIBRARY: engine
+ORIGIN: ../../../garnet/LICENSE
+TYPE: LicenseType.bsd
+FILE: ../../../flutter/fml/export.h
+----------------------------------------------------------------------------------------------------
+Copyright 2017 The Fuchsia Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+====================================================================================================
+
 ====================================================================================================
 LIBRARY: engine
 ORIGIN: ../../../third_party/icu/scripts/LICENSE
@@ -817,6 +852,12 @@ TYPE: LicenseType.bsd
 FILE: ../../../flutter/fml/build_config.h
 FILE: ../../../flutter/fml/compiler_specific.h
 FILE: ../../../flutter/fml/eintr_wrapper.h
+FILE: ../../../flutter/fml/log_level.h
+FILE: ../../../flutter/fml/log_settings.cc
+FILE: ../../../flutter/fml/log_settings.h
+FILE: ../../../flutter/fml/log_settings_state.cc
+FILE: ../../../flutter/fml/logging.cc
+FILE: ../../../flutter/fml/logging.h
 FILE: ../../../flutter/fml/memory/ref_counted.h
 FILE: ../../../flutter/fml/memory/ref_counted_internal.h
 FILE: ../../../flutter/fml/memory/ref_counted_unittest.cc
@@ -1141,4 +1182,4 @@ 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.
 ====================================================================================================
-Total license count: 11
+Total license count: 12