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-rw-r--r--lib/dtrace/examples/efile_drv.d103
1 files changed, 103 insertions, 0 deletions
diff --git a/lib/dtrace/examples/efile_drv.d b/lib/dtrace/examples/efile_drv.d
new file mode 100644
index 0000000000..c9c8080dba
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+++ b/lib/dtrace/examples/efile_drv.d
@@ -0,0 +1,103 @@
+/* example usage: dtrace -q -s /path/to/efile_drv.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
+{
+ op_map[1] = "OPEN";
+ op_map[2] = "READ";
+ op_map[3] = "LSEEK";
+ op_map[4] = "WRITE";
+ op_map[5] = "FSTAT";
+ op_map[6] = "PWD";
+ op_map[7] = "READDIR";
+ op_map[8] = "CHDIR";
+ op_map[9] = "FSYNC";
+ op_map[10] = "MKDIR";
+ op_map[11] = "DELETE";
+ op_map[12] = "RENAME";
+ op_map[13] = "RMDIR";
+ op_map[14] = "TRUNCATE";
+ op_map[15] = "READ_FILE";
+ op_map[16] = "WRITE_INFO";
+ op_map[19] = "LSTAT";
+ op_map[20] = "READLINK";
+ op_map[21] = "LINK";
+ op_map[22] = "SYMLINK";
+ op_map[23] = "CLOSE";
+ op_map[24] = "PWRITEV";
+ op_map[25] = "PREADV";
+ op_map[26] = "SETOPT";
+ op_map[27] = "IPREAD";
+ op_map[28] = "ALTNAME";
+ op_map[29] = "READ_LINE";
+ op_map[30] = "FDATASYNC";
+ op_map[31] = "FADVISE";
+}
+
+erlang*:::aio_pool-add
+{
+ printf("async I/O pool port %s queue len %d\n", copyinstr(arg0), arg1);
+}
+
+erlang*:::aio_pool-get
+{
+ printf("async I/O pool port %s queue len %d\n", copyinstr(arg0), arg1);
+}
+
+erlang*:::efile_drv-entry
+{
+ printf("efile_drv enter tag={%d,%d} %s%s | %s (%d) | args: %s %s , %d %d (port %s)\n",
+ arg0, arg1,
+ arg2 == NULL ? "" : "user tag ",
+ arg2 == NULL ? "" : copyinstr(arg2),
+ op_map[arg3], arg3,
+ arg4 == NULL ? "" : copyinstr(arg4),
+ arg5 == NULL ? "" : copyinstr(arg5), arg6, arg7,
+ /* NOTE: port name in args[10] is experimental */
+ copyinstr((user_addr_t) args[10]))
+}
+
+erlang*:::efile_drv-int*
+{
+ printf("async I/O worker tag={%d,%d} | %s (%d) | %s\n",
+ arg0, arg1, op_map[arg2], arg2, probename);
+}
+
+/* efile_drv-return error case */
+erlang*:::efile_drv-return
+/arg4 == 0/
+{
+ printf("efile_drv return tag={%d,%d} %s%s | %s (%d) | errno %d\n",
+ arg0, arg1,
+ arg2 == NULL ? "" : "user tag ",
+ arg2 == NULL ? "" : copyinstr(arg2),
+ op_map[arg3], arg3,
+ arg5);
+}
+
+/* efile_drv-return success case */
+erlang*:::efile_drv-return
+/arg4 != 0/
+{
+ printf("efile_drv return tag={%d,%d} %s | %s (%d) ok\n",
+ arg0, arg1,
+ arg2 == NULL ? "" : copyinstr(arg2),
+ op_map[arg3], arg3);
+}