Initial Contribution

1 files changed, 99 insertions, 0 deletions

diff --git a/tools/preload/Record.java b/tools/preload/Record.java
new file mode 100644
index 000000000000..9ffab46ac05c
--- /dev/null
+++ b/tools/preload/Record.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+/**
+ * One line from the loaded-classes file.
+ */
+class Record {
+
+    enum Type {
+        /** Start of initialization. */
+        START_LOAD,
+
+        /** End of initialization. */
+        END_LOAD,
+
+        /** Start of initialization. */
+        START_INIT,
+
+        /** End of initialization. */
+        END_INIT
+    }
+
+    /** Parent process ID. */
+    final int ppid;
+
+    /** Process ID. */
+    final int pid;
+
+    /** Thread ID. */
+    final int tid;
+
+    /** Process name. */
+    final String processName;
+
+    /** Class loader pointer. */
+    final int classLoader;
+
+    /** Type of record. */
+    final Type type;
+
+    /** Name of loaded class. */
+    final String className;
+
+    /** Record time (ns). */
+    final long time;
+
+    /**
+     * Parses a line from the loaded-classes file.
+     */
+    Record(String line) {
+        char typeChar = line.charAt(0);
+        switch (typeChar) {
+            case '>': type = Type.START_LOAD; break;
+            case '<': type = Type.END_LOAD; break;
+            case '+': type = Type.START_INIT; break;
+            case '-': type = Type.END_INIT; break;
+            default: throw new AssertionError("Bad line: " + line);
+        }
+
+        line = line.substring(1);
+        String[] parts = line.split(":");
+
+        ppid = Integer.parseInt(parts[0]);
+        pid = Integer.parseInt(parts[1]);
+        tid = Integer.parseInt(parts[2]);
+
+        processName = parts[3].intern();
+
+        classLoader = Integer.parseInt(parts[4]);
+        className = vmTypeToLanguage(parts[5]).intern();
+
+        time = Long.parseLong(parts[6]);
+    }
+
+    /**
+     * Converts a VM-style name to a language-style name.
+     */
+    static String vmTypeToLanguage(String typeName) {
+        if (!typeName.startsWith("L") || !typeName.endsWith(";") ) {
+            throw new AssertionError("Bad name: " + typeName);
+        }
+
+        typeName = typeName.substring(1, typeName.length() - 1);
+        return typeName.replace("/", ".");
+    }
+}