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/* example usage: stap /path/to/dist.systemtap -x <pid> */
/*
* %CopyrightBegin%
*
* Copyright Scott Lystig Fritchie and Andreas Schultz, 2011-2016. All Rights Reserved.
*
* 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.
*
* %CopyrightEnd%
*/
/*
* Note: This file assumes that you're using the SMP-enabled Erlang
* virtual machine, "beam.smp".
* Note that other variations of the virtual machine also have
* different names, e.g. the debug build of the SMP-enabled VM
* is "beam.debug.smp".
*
* To use a different virtual machine, replace each instance of
* "beam.smp" with "beam.debug.smp" or the VM name appropriate
* to your environment.
*/
probe process("beam.smp").mark("dist-monitor")
{
printf("monitor: pid %d, who %s, what %s, node %s, type %s, reason %s\n",
pid(),
user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4),
user_string($arg5));
}
probe process("beam.smp").mark("dist-port_busy")
{
printf("dist port_busy: node %s, port %s, remote_node %s, blocked pid %s\n",
user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
blocked_procs[user_string($arg4)] = local_clock_ns();
}
probe process("beam.smp").mark("dist-port_busy")
{
printf("dist port_busy: node %s, port %s, remote_node %s, blocked pid %s\n",
user_string($arg1), user_string($arg2), user_string($arg3), user_string($arg4));
blocked_procs[user_string($arg4)] = local_clock_ns();
}
probe process("beam.smp").mark("dist-output")
{
printf("dist output: node %s, port %s, remote_node %s bytes %d\n",
user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
}
probe process("beam.smp").mark("dist-outputv")
{
printf("port outputv: node %s, port %s, remote_node %s bytes %d\n",
user_string($arg1), user_string($arg2), user_string($arg3), $arg4);
}
probe process("beam.smp").mark("process-scheduled")
{
pidstr = user_string($arg1);
if (pidstr in blocked_procs) {
printf("blocked pid %s scheduled now, waited %d microseconds\n",
pidstr, (local_clock_ns() - blocked_procs[pidstr]) / 1000);
delete blocked_procs[pidstr];
}
}
global blocked_procs;
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