langtools/src/share/classes/com/sun/tools/jdeps/Profile.java
changeset 21046 ebf16a1a6328
parent 16550 f20e2521f3df
child 21503 45fc62482cae
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/jdeps/Profile.java	Thu Oct 17 13:19:48 2013 -0700
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.tools.jdeps;
+
+import com.sun.tools.classfile.Annotation;
+import com.sun.tools.classfile.Annotation.*;
+import com.sun.tools.classfile.Attribute;
+import com.sun.tools.classfile.ClassFile;
+import com.sun.tools.classfile.ConstantPool.*;
+import com.sun.tools.classfile.ConstantPoolException;
+import com.sun.tools.classfile.RuntimeAnnotations_attribute;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.*;
+import java.util.jar.JarFile;
+
+/**
+ * Build the profile information from ct.sym if exists.
+ */
+enum Profile {
+
+    COMPACT1("compact1", 1),
+    COMPACT2("compact2", 2),
+    COMPACT3("compact3", 3),
+    FULL_JRE("Full JRE", 4);
+
+    final String name;
+    final int profile;
+    final Set<String> packages;
+    final Set<String> proprietaryPkgs;
+
+    Profile(String name, int profile) {
+        this.name = name;
+        this.profile = profile;
+        this.packages = new HashSet<>();
+        this.proprietaryPkgs = new HashSet<>();
+    }
+
+    @Override
+    public String toString() {
+        return name;
+    }
+
+    public static int getProfileCount() {
+        return PackageToProfile.map.values().size();
+    }
+
+    /**
+     * Returns the Profile for the given package name. It returns an empty
+     * string if the given package is not in any profile.
+     */
+    public static Profile getProfile(String pn) {
+        Profile profile = PackageToProfile.map.get(pn);
+        return (profile != null && profile.packages.contains(pn))
+                ? profile : null;
+    }
+
+    static class PackageToProfile {
+        static Map<String, Profile> map = initProfiles();
+
+        private static Map<String, Profile> initProfiles() {
+            try {
+                String profilesProps = System.getProperty("jdeps.profiles");
+                if (profilesProps != null) {
+                    // for testing for JDK development build where ct.sym doesn't exist
+                    initProfilesFromProperties(profilesProps);
+                } else {
+                    Path home = Paths.get(System.getProperty("java.home"));
+                    if (home.endsWith("jre")) {
+                        home = home.getParent();
+                    }
+                    Path ctsym = home.resolve("lib").resolve("ct.sym");
+                    if (Files.exists(ctsym)) {
+                        // parse ct.sym and load information about profiles
+                        try (JarFile jf = new JarFile(ctsym.toFile())) {
+                            ClassFileReader reader = ClassFileReader.newInstance(ctsym, jf);
+                            for (ClassFile cf : reader.getClassFiles()) {
+                                findProfile(cf);
+                            }
+                        }
+                    }
+                }
+            } catch (IOException | ConstantPoolException e) {
+                throw new Error(e);
+            }
+            HashMap<String,Profile> map = new HashMap<>();
+            for (Profile profile : Profile.values()) {
+                for (String pn : profile.packages) {
+                    if (!map.containsKey(pn)) {
+                        // split packages in the JRE: use the smaller compact
+                        map.put(pn, profile);
+                    }
+                }
+                for (String pn : profile.proprietaryPkgs) {
+                    if (!map.containsKey(pn)) {
+                        map.put(pn, profile);
+                    }
+                }
+            }
+            return map;
+        }
+        private static final String PROFILE_ANNOTATION = "Ljdk/Profile+Annotation;";
+        private static final String PROPRIETARY_ANNOTATION = "Lsun/Proprietary+Annotation;";
+        private static Profile findProfile(ClassFile cf) throws ConstantPoolException {
+            RuntimeAnnotations_attribute attr = (RuntimeAnnotations_attribute)
+                cf.attributes.get(Attribute.RuntimeInvisibleAnnotations);
+            int index = 0;
+            boolean proprietary = false;
+            if (attr != null) {
+                for (int i = 0; i < attr.annotations.length; i++) {
+                    Annotation ann = attr.annotations[i];
+                    String annType = cf.constant_pool.getUTF8Value(ann.type_index);
+                    if (PROFILE_ANNOTATION.equals(annType)) {
+                        for (int j = 0; j < ann.num_element_value_pairs; j++) {
+                            Annotation.element_value_pair pair = ann.element_value_pairs[j];
+                            Primitive_element_value ev = (Primitive_element_value) pair.value;
+                            CONSTANT_Integer_info info = (CONSTANT_Integer_info)
+                                cf.constant_pool.get(ev.const_value_index);
+                            index = info.value;
+                            break;
+                        }
+                    } else if (PROPRIETARY_ANNOTATION.equals(annType)) {
+                        proprietary = true;
+                    }
+                }
+            }
+
+            Profile p = null;  // default
+            switch (index) {
+                case 1:
+                    p = Profile.COMPACT1; break;
+                case 2:
+                    p = Profile.COMPACT2; break;
+                case 3:
+                    p = Profile.COMPACT3; break;
+                case 4:
+                    p = Profile.FULL_JRE; break;
+                default:
+                    // skip classes with profile=0
+                    // Inner classes are not annotated with the profile annotation
+                    return null;
+            }
+
+            String name = cf.getName();
+            int i = name.lastIndexOf('/');
+            name = (i > 0) ? name.substring(0, i).replace('/', '.') : "";
+            if (proprietary) {
+                p.proprietaryPkgs.add(name);
+            } else {
+                p.packages.add(name);
+            }
+            return p;
+        }
+
+        private static void initProfilesFromProperties(String path) throws IOException {
+            Properties props = new Properties();
+            try (FileReader reader = new FileReader(path)) {
+                props.load(reader);
+            }
+            for (Profile prof : Profile.values()) {
+                int i = prof.profile;
+                String key = props.getProperty("profile." + i + ".name");
+                if (key == null) {
+                    throw new RuntimeException(key + " missing in " + path);
+                }
+                String n = props.getProperty("profile." + i + ".packages");
+                String[] pkgs = n.split("\\s+");
+                for (String p : pkgs) {
+                    if (p.isEmpty()) continue;
+                    prof.packages.add(p);
+                }
+            }
+        }
+    }
+
+    // for debugging
+    public static void main(String[] args) {
+        if (args.length == 0) {
+            if (Profile.getProfileCount() == 0) {
+                System.err.println("No profile is present in this JDK");
+            }
+            for (Profile p : Profile.values()) {
+                String profileName = p.name;
+                SortedSet<String> set = new TreeSet<>(p.packages);
+                for (String s : set) {
+                    // filter out the inner classes that are not annotated with
+                    // the profile annotation
+                    if (PackageToProfile.map.get(s) == p) {
+                        System.out.format("%2d: %-10s  %s%n", p.profile, profileName, s);
+                        profileName = "";
+                    } else {
+                        System.err.format("Split package: %s in %s and %s %n",
+                            s, PackageToProfile.map.get(s).name, p.name);
+                    }
+                }
+            }
+        }
+        for (String pn : args) {
+            System.out.format("%s in %s%n", pn, getProfile(pn));
+        }
+    }
+}