android_webview/java/src/org/chromium/android_webview/command_line/CommandLineUtil.java

// Copyright 2017 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.

package org.chromium.android_webview.command_line;

import android.os.Build;
import android.os.StrictMode;

import org.chromium.base.CommandLine;
import org.chromium.base.annotations.SuppressFBWarnings;

/**
 * Utility class for WebView's CommandLine - this is compiled into a separate target that can be
 * reached from WebView's separate minidump-uploading Services.
 */
public class CommandLineUtil {
    private CommandLineUtil() {}

    public static final String WEBVIEW_COMMAND_LINE_FILE = "/data/local/tmp/webview-command-line";

    // same switch as kEnableCrashReporterForTesting in //base/base_switches.h
    public static final String CRASH_UPLOADS_ENABLED_FOR_TESTING_SWITCH =
            "enable-crash-reporter-for-testing";

    public static boolean isBuildDebuggable() {
        return !Build.TYPE.equals("user");
    }

    /**
     * Initialize the CommandLine for WebView - this should be initialized on the same thread where
     * we subsequently access CommandLine.
     */
    @SuppressFBWarnings("DMI_HARDCODED_ABSOLUTE_FILENAME")
    public static void initCommandLine() {
        if (isBuildDebuggable()) {
            // Suppress the StrictMode violation as this codepath is only hit on debuggable builds.
            StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
            CommandLine.initFromFile(CommandLineUtil.WEBVIEW_COMMAND_LINE_FILE);
            StrictMode.setThreadPolicy(oldPolicy);
        } else {
            CommandLine.init(null);
        }
    }
}