EnglishFrenchSpanish

Ad


OnWorks favicon

dtrace - Online in the Cloud

Run dtrace in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command dtrace that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


dtrace - Dtrace compatible user application static probe generation tool.

SYNOPSIS


dtrace -s file [OPTIONS]

DESCRIPTION


The dtrace command converts probe descriptions defined in file.d into a probe header file
via the -h option or a probe description file via the -G option.

OPTIONS


-h generate a systemtap header file.

-G generate a systemtap probe definition object file.

-o file
is the name of the output file. If the -G option is given then the output file
will be called file.o; if the -h option is given then the output file will be
called file.h.

-C run the cpp preprocessor on the input file when the -h option is given.

-I file
give this include path to cpp when the -C option is given.

-k keep temporary files, for example the C language source for the -G option.

EXAMPLES


Systemtap is source compatible with dtrace user application static probe support. Given a
file test.d containing:

provider sdt_probes
{
probe test_0 (int type);
probe test_1 (struct astruct node);
};
struct astruct {int a; int b;};

Then the command "dtrace -s test.d -G" will create the probe definition file test.o and
the command "dtrace -stest.d -h" will create the probe header file test.h Subsequently the
application can use the generated macros this way:

#include "test.h"
...
struct astruct s;
...
SDT_PROBES_TEST_0(value);
...
if (SDT_PROBES_TEST_1_ENABLED())
SDT_PROBES_TEST_1(expensive_function(s));

SEMAPHORES


Semaphores are flag variables used by probes as a way of bypassing potentially costly
processing to prepare arguments for probes that may not even be active. They are
automatically set/cleared by systemtap when a relevant script is running, so the argument
setup cost is only paid when necessary. These semaphore variables are defined within the
the "test.o" object file, which must therefore be linked into an application.

Sometimes, semaphore variables are not necessary nor helpful. Skipping them can simplify
the build process, by omitting the extra "test.o" file. To skip dependence upon semaphore
variables, include "<sys/sdt.h>" within the application before "test.h":

#include <sys/sdt.h>
#include "test.h"
...
struct astruct s;
...
SDT_PROBES_TEST_0(value);
...
if (SDT_PROBES_TEST_1_ENABLED())
SDT_PROBES_TEST_1(cheap_function(s));

In this mode, the ENABLED() test is fixed at 1.

Use dtrace online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    OfficeFloor
    OfficeFloor
    OfficeFloor provides inversion of
    coupling control, with its: - dependency
    injection - continuation injection -
    thread injection For more information
    visit the...
    Download OfficeFloor
  • 2
    DivKit
    DivKit
    DivKit is an open source Server-Driven
    UI (SDUI) framework. It allows you to
    roll out server-sourced updates to
    different app versions. Also, it can be
    used fo...
    Download DivKit
  • 3
    subconverter
    subconverter
    Utility to convert between various
    subscription format. Shadowrocket users
    should use ss, ssr or v2ray as target.
    You can add &remark= to
    Telegram-liked HT...
    Download subconverter
  • 4
    SWASH
    SWASH
    SWASH is a general-purpose numerical
    tool for simulating unsteady,
    non-hydrostatic, free-surface,
    rotational flow and transport phenomena
    in coastal waters as ...
    Download SWASH
  • 5
    VBA-M (Archived - Now on Github)
    VBA-M (Archived - Now on Github)
    Project has moved to
    https://github.com/visualboyadvance-m/visualboyadvance-m
    Features:Cheat creationsave statesmulti
    system, supports gba, gbc, gb, sgb,
    sgb2Tu...
    Download VBA-M (Archived - Now on Github)
  • 6
    Stacer
    Stacer
    Linux System Optimizer and Monitoring
    Github Repository:
    https://github.com/oguzhaninan/Stacer.
    Audience: End Users/Desktop. User
    interface: Qt. Programming La...
    Download Stacer
  • More »

Linux commands

Ad