1 files changed, 135 insertions, 0 deletions
diff --git a/tools/preload/Record.java b/tools/preload/Record.java
new file mode 100644
index 0000000..b2be4d4
--- /dev/null
+++ b/tools/preload/Record.java
@@ -0,0 +1,135 @@
+/*
+ * 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;
+    
+    /** Source file line# */
+    int sourceLineNumber;
+
+    /**
+     * Parses a line from the loaded-classes file.
+     */
+    Record(String line, int lineNum) {
+        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);
+        }
+
+        sourceLineNumber = lineNum;
+        
+        line = line.substring(1);
+        String[] parts = line.split(":");
+
+        ppid = Integer.parseInt(parts[0]);
+        pid = Integer.parseInt(parts[1]);
+        tid = Integer.parseInt(parts[2]);
+
+        processName = decode(parts[3]).intern();
+
+        classLoader = Integer.parseInt(parts[4]);
+        className = vmTypeToLanguage(decode(parts[5])).intern();
+
+        time = Long.parseLong(parts[6]);
+    }
+    
+    /**
+     * Decode any escaping that may have been written to the log line.
+     * 
+     * Supports unicode-style escaping:  \\uXXXX = character in hex
+     * 
+     * @param rawField the field as it was written into the log
+     * @result the same field with any escaped characters replaced
+     */
+    String decode(String rawField) {
+        String result = rawField;
+        int offset = result.indexOf("\\u");
+        while (offset >= 0) {
+            String before = result.substring(0, offset);
+            String escaped = result.substring(offset+2, offset+6);
+            String after = result.substring(offset+6);
+            
+            result = String.format("%s%c%s", before, Integer.parseInt(escaped, 16), after);
+
+            // find another but don't recurse  
+            offset = result.indexOf("\\u", offset + 1);          
+        }
+        return result;
+    }
+
+    /**
+     * Converts a VM-style name to a language-style name.
+     */
+    String vmTypeToLanguage(String typeName) {
+        // if the typename is (null), just return it as-is.  This is probably in dexopt and 
+        // will be discarded anyway.  NOTE: This corresponds to the case in dalvik/vm/oo/Class.c
+        // where dvmLinkClass() returns false and we clean up and exit.
+        if ("(null)".equals(typeName)) {
+            return typeName;
+        }
+        
+        if (!typeName.startsWith("L") || !typeName.endsWith(";") ) {
+            throw new AssertionError("Bad name: " + typeName + " in line " + sourceLineNumber);
+        }
+
+        typeName = typeName.substring(1, typeName.length() - 1);
+        return typeName.replace("/", ".");
+    }
+}