plockstat(1) [mojave man page]

PLOCKSTAT(1)															      PLOCKSTAT(1)

NAME

       plockstat - front-end to DTrace to print statistics about POSIX mutexes and read/write locks

SYNOPSIS

       plockstat [-vACHV] [-n count] [-s depth] [-e secs] [-x opt[=val]]
       command [arg...]

       plockstat [-vACHV] [-n count] [-s depth] [-e secs] [-x opt[=val]]
       -p pid

OVERVIEW

       The plockstat command is a front-end to DTrace that can be used to print statistics about POSIX mutexes and read/write locks.

       Since OS X 10.11, in order to use this, your process must be run with DYLD_LIBRARY_PATH set to contain /usr/lib/system/introspection:

	       DYLD_LIBRARY_PATH=/usr/lib/system/introspection

       Which contains the necessary static DTrace probes.

OPTIONS

       -v     print a message when tracing starts

       -A     trace contention and hold events (same as -CH)

       -C     trace contention events for mutexes and rwlocks

       -H     trace hold events for mutexes and rwlocks

       -V     print the dtrace script to run

       -n count
	      display only 'count' entries for each event type

       -s depth
	      show stack trace upto 'depth' entries

       -e secs
	      exit after specified seconds

       -x arg[=val]
	      enable a DTrace runtime option or a D compiler option

       -p pid attach and trace the specified process id

SEE ALSO

       dtrace(1)

1.0								     July 2007							      PLOCKSTAT(1)

libdtrace(3LIB) 						Interface Libraries						   libdtrace(3LIB)

NAME

       libdtrace - DTrace dynamic tracing software library

DESCRIPTION

       Functions  in this library define the interface for interacting with the DTrace dynamic tracing software, including the D language compiler
       and facilities for enabling probes and consuming trace data.

INTERFACES

       The interfaces provided by libdtrace.so.1 are currently private to the implementation of the Solaris system and DTrace  subsystem  and  are
       subject	to  change  at	any  time  without notice.  Applications using these interfaces might fail to run on future releases. Refer to the
       Solaris Dynamic Tracing Guide for a description of the public documented interfaces available for the DTrace facility.

FILES

       /usr/lib/libdtrace.so.1	     shared object

       /usr/lib/64/libdtrace.so.1    64-bit shared object

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWdtrc			   |
       |Interface Stability	     |Private			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dtrace(1M), attributes(5), dtrace(7D)

       Solaris Dynamic Tracing Guide

SunOS 5.11							    17 Sep 2003 						   libdtrace(3LIB)