1 files changed, 104 insertions, 0 deletions
diff --git a/src/share/back/timing.c b/src/share/back/timing.c
new file mode 100644
index 000000000..f49a30f63
--- /dev/null
+++ b/src/share/back/timing.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 1998, 2004, 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.
+ */
+
+#include "timing.h"
+
+#include "error_messages.h"
+#include "JDWP.h"
+#include "outStream.h"
+#include "util.h"
+
+// ANDROID-CHANGED: This whole file
+
+// This system stores cmd processing timing and sends them to the debugger
+// to generate profiling stats.
+
+typedef struct Timing {
+    jlong start_ns;
+    jlong duration_ns;
+    jint id;
+    jint cmd_set;
+    jint cmd;
+} Timing;
+
+static const jint MAX_TIMINGS = 500;
+static Timing timings[MAX_TIMINGS];
+static jint numTimings;
+
+void timings_startCmd(jint id, jint cmd_set, jint cmd) {
+  timings[numTimings].id = id;
+  timings[numTimings].cmd_set = cmd_set;
+  timings[numTimings].cmd = cmd;
+  timings[numTimings].start_ns = nsTime();
+}
+
+void timings_endCmd() {
+  timings[numTimings].duration_ns = nsTime() - timings[numTimings].start_ns;
+  numTimings++;
+
+  if (numTimings == MAX_TIMINGS) {
+    timings_flush();
+  }
+}
+
+// Return the size of the ARTT chunk
+static jint getChunkSize() {
+  jint size = 0;
+  size += sizeof(jint); // version
+  size += sizeof(jint); // num timing entries.
+
+  size += numTimings *  (sizeof(jint) * 3 + sizeof(jlong) * 2); // entries
+  return size;
+}
+
+void timings_flush() {
+   // Don't even waste a packet if we know it will contain no payload.
+   if (numTimings == 0) {
+    return;
+   }
+
+   PacketOutputStream packet;
+
+   outStream_initCommand(&packet, uniqueID(), 0, JDWP_COMMAND_SET(DDM),  JDWP_COMMAND(DDM, Chunk));
+
+   outStream_writeInt(&packet, 'A' << 24 | 'R' << 16 | 'T' << 8 | 'T');// DDM chunk type
+   outStream_writeInt(&packet,  getChunkSize()); // DDM chunk length
+
+   outStream_writeInt(&packet, 1); //version
+   outStream_writeInt(&packet, numTimings); // num timing entries
+
+   for(int i=0 ; i < numTimings ; i++) {
+     outStream_writeInt(&packet, timings[i].id);
+     outStream_writeInt(&packet, timings[i].cmd_set);
+     outStream_writeInt(&packet, timings[i].cmd);
+     outStream_writeLong(&packet, timings[i].start_ns);
+     outStream_writeLong(&packet, timings[i].duration_ns);
+   }
+   outStream_sendCommand(&packet);
+   outStream_destroy(&packet);
+
+   numTimings = 0;
+}
+