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-rw-r--r--lib/dtrace/examples/messages.d94
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/dtrace/examples/messages.d b/lib/dtrace/examples/messages.d
new file mode 100644
index 0000000000..6361f3a220
--- /dev/null
+++ b/lib/dtrace/examples/messages.d
@@ -0,0 +1,94 @@
+/* example usage: dtrace -q -s /path/to/messages.d */
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Scott Lystig Fritchie 2011. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+BEGIN
+{
+ printf("\n");
+ printf("NOTE: message-queue message size 4294967295 means an external\n");
+ printf(" message that the code isn't smart enough to determine\n");
+ printf(" the actual size.\n");
+ printf("\n");
+}
+
+erlang*:::message-send
+/arg3 == 0 && arg4 == 0 && arg5 == 0/
+{
+ printf("send: %s -> %s: %d words\n",
+ copyinstr(arg0), copyinstr(arg1), arg2);
+}
+
+erlang*:::message-send
+/arg3 != 0 || arg4 != 0 || arg5 != 0/
+{
+ printf("send: %s label %d token {%d,%d} -> %s: %d words\n",
+ copyinstr(arg0),
+ arg3, arg4, arg5,
+ copyinstr(arg1), arg2);
+}
+
+/*
+ * TODO:
+ * Weird, on my OS X box, beam says arg6 = 0 but this script says 4294967296.
+ */
+
+erlang*:::message-send-remote
+/arg4 == 0 && arg5 == 0 && (arg6 == 0 || arg6 >= 4294967296)/
+{
+ printf("send : %s -> %s %s: %d words\n",
+ copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), arg3);
+}
+
+erlang*:::message-send-remote
+/arg4 != 0 || arg5 != 0 || arg6 < 4294967296/
+{
+ printf("send : %s label %d token {%d,%d} -> %s %s: %d words\n",
+ copyinstr(arg0),
+ arg4, arg5, arg6,
+ copyinstr(arg1), copyinstr(arg2), arg3);
+}
+
+erlang*:::message-queued
+/arg3 == 0 && arg4 == 0 && arg5 == 0/
+{
+ printf("queued: %s: %d words, queue len %d\n", copyinstr(arg0), arg1, arg2);
+}
+
+erlang*:::message-queued
+/arg3 != 0 || arg4 != 0 || arg5 != 0/
+{
+ printf("queued: %s label %d token {%d,%d}: %d words, queue len %d\n",
+ copyinstr(arg0), arg3, arg4, arg5,
+ arg1, arg2);
+}
+
+erlang*:::message-receive
+/arg3 == 0 && arg4 == 0 && arg5 == 0/
+{
+ printf("receive: %s: %d words, queue len %d\n",
+ copyinstr(arg0), arg1, arg2);
+}
+
+erlang*:::message-receive
+/arg3 != 0 || arg4 != 0 || arg5 != 0/
+{
+ printf("receive: %s label %d token {%d,%d}: %d words, queue len %d\n",
+ copyinstr(arg0), arg3, arg4, arg5,
+ arg1, arg2);
+}