src/starboard/android/shared/log.cc

// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// 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.

#include <android/log.h>
#include <stdio.h>
#include <unistd.h>

#include <jni.h>
#include <string>

#include "starboard/android/shared/jni_env_ext.h"
#include "starboard/android/shared/jni_utils.h"
#include "starboard/android/shared/log_internal.h"
#include "starboard/log.h"
#include "starboard/shared/starboard/command_line.h"
#include "starboard/string.h"
#include "starboard/thread.h"

using starboard::android::shared::JniEnvExt;
using starboard::android::shared::ScopedLocalJavaRef;

namespace {
  const char kLogSleepTimeSwitch[] = "android_log_sleep_time";
  SbTime g_log_sleep_time = 0;
}

namespace starboard {
namespace android {
namespace shared {

void LogInit(const starboard::shared::starboard::CommandLine& command_line) {
  if (command_line.HasSwitch(kLogSleepTimeSwitch)) {
    g_log_sleep_time =
        SbStringAToL(command_line.GetSwitchValue(kLogSleepTimeSwitch).c_str());
    SB_LOG(INFO) << "Android log sleep time: " << g_log_sleep_time;
  }
}

}  // namespace shared
}  // namespace android
}  // namespace starboard

void SbLog(SbLogPriority priority, const char* message) {
  int android_priority;
  switch (priority) {
    case kSbLogPriorityUnknown:
      android_priority = ANDROID_LOG_UNKNOWN;
      break;
    case kSbLogPriorityInfo:
      android_priority = ANDROID_LOG_INFO;
      break;
    case kSbLogPriorityWarning:
      android_priority = ANDROID_LOG_WARN;
      break;
    case kSbLogPriorityError:
      android_priority = ANDROID_LOG_ERROR;
      break;
    case kSbLogPriorityFatal:
      android_priority = ANDROID_LOG_FATAL;
      break;
    default:
      android_priority = ANDROID_LOG_INFO;
      break;
  }
  __android_log_write(android_priority, "starboard", message);

  // In unit tests the logging is too fast for the android log to be read out
  // and we end up losing crucial logs. The test runner specifies a sleep time.
  SbThreadSleep(g_log_sleep_time);
}

// Helper to write messages to logcat even when Android non-warning/non-error
// logging is stripped from the app with Proguard.
extern "C" SB_EXPORT_PLATFORM jint
Java_dev_cobalt_util_Log_nativeWrite(JniEnvExt* env,
                                     jobject unused_clazz,
                                     jchar priority,
                                     jstring tag,
                                     jstring msg,
                                     jobject throwable) {
  char log_method_name[2] = {static_cast<char>(priority), '\0'};
  if (throwable == nullptr) {
    return env->CallStaticIntMethodOrAbort(
        "android.util.Log", log_method_name,
        "(Ljava/lang/String;Ljava/lang/String;)I", tag, msg);
  } else {
    return env->CallStaticIntMethodOrAbort(
        "android.util.Log", log_method_name,
        "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I",
        tag, msg, throwable);
  }
}