OnWorks favicon

i686-linux-gnu-gcov-tool-6 - Online in the Cloud

Run i686-linux-gnu-gcov-tool-6 in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command i686-linux-gnu-gcov-tool-6 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



gcov-tool - offline gcda profile processing tool


gcov-tool [-v|--version] [-h|--help]

gcov-tool merge [merge-options] directory1 directory2
[-o| --output directory]
[-w|--weight w1,w2]

gcov-tool rewrite [rewrite-options] directory
[-o|--output directory]
[-s|--scale float_or_simple-frac_value]
[-n|--normalize long_long_value]

gcov-tool overlap [overlap-options] directory1 directory2
[-t|--hot_threshold] float


gcov-tool is an offline tool to process gcc's gcda profile files.

Current gcov-tool supports the following functionalities:

* merge two sets of profiles with weights.

* read one set of profile and rewrite profile contents. One can scale or normalize the
count values.

Examples of the use cases for this tool are:

* Collect the profiles for different set of inputs, and use this tool to merge them. One
can specify the weight to factor in the relative importance of each input.

* Rewrite the profile after removing a subset of the gcda files, while maintaining the
consistency of the summary and the histogram.

* It can also be used to debug or libgcov code as the tools shares the majority code as
the runtime library.

Note that for the merging operation, this profile generated offline may contain slight
different values from the online merged profile. Here are a list of typical differences:

* histogram difference: This offline tool recomputes the histogram after merging the
counters. The resulting histogram, therefore, is precise. The online merging does not
have this capability -- the histogram is merged from two histograms and the result is
an approximation.

* summary checksum difference: Summary checksum uses a CRC32 operation. The value
depends on the link list order of gcov-info objects. This order is different in gcov-
tool from that in the online merge. It's expected to have different summary checksums.
It does not really matter as the compiler does not use this checksum anywhere.

* value profile counter values difference: Some counter values for value profile are
runtime dependent, like heap addresses. It's normal to see some difference in these
kind of counters.


Display help about using gcov-tool (on the standard output), and exit without doing
any further processing.

Display the gcov-tool version number (on the standard output), and exit without doing
any further processing.

Merge two profile directories.

Set the verbose mode.

-o directory
--output directory
Set the output profile directory. Default output directory name is merged_profile.

-w w1,w2
--weight w1,w2
Set the merge weights of the directory1 and directory2, respectively. The default
weights are 1 for both.

Read the specified profile directory and rewrite to a new directory.

Set the verbose mode.

-o directory
--output directory
Set the output profile directory. Default output name is rewrite_profile.

-s float_or_simple-frac_value
--scale float_or_simple-frac_value
Scale the profile counters. The specified value can be in floating point value, or
simple fraction value form, such 1, 2, 2/3, and 5/3.

-n long_long_value
--normalize <long_long_value>
Normalize the profile. The specified value is the max counter value in the new

Computer the overlap score between the two specified profile directories. The overlap
score is computed based on the arc profiles. It is defined as the sum of min
(p1_counter[i] / p1_sum_all, p2_counter[i] / p2_sum_all), for all arc counter i, where
p1_counter[i] and p2_counter[i] are two matched counters and p1_sum_all and p2_sum_all
are the sum of counter values in profile 1 and profile 2, respectively.

Set the verbose mode.

Only print info for hot objects/functions.

Print function level overlap score.

Print full gcda filename.

Print object level overlap score.

-t float
--hot_threshold <float>
Set the threshold for hot counter value.

Use i686-linux-gnu-gcov-tool-6 online using onworks.net services

Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Sardi is a complete restyling and
    optimisation of svg code. 6 choices for
    your applications and 10 kind of folders
    to use in your file manager. The sardi
    Download Sardi
  • 2
    LMMS Digital Audio Workstation
    LMMS Digital Audio Workstation
    LMMS is a free cross-platform software
    which allows you to produce music with
    your computer. If you like this project
    consider getting involved in the project
    Download LMMS Digital Audio Workstation
  • 3
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS Real Time Kernel (RTOS)
    FreeRTOS is a market-leading real-time
    operating system (RTOS) for
    microcontrollers and small
    microprocessors. Distributed freely
    under the MIT open source lice...
    Download FreeRTOS Real Time Kernel (RTOS)
  • 4
    Avogadro is an advanced molecular
    editor designed for cross-platform use
    in computational chemistry, molecular
    modeling, bioinformatics, materials
    science and ...
    Download Avogadro
  • 5
    XMLTV is a set of programs to process
    TV (tvguide) listings and help manage
    your TV viewing, storing listings in an
    XML-based format. There are utilities to
    Download XMLTV
  • 6
    Strikr Free Software project. Artifacts
    released under a 'intent based'
    dual license: AGPLv3 (community) and
    CC-BY-NC-ND 4.0 international
    Download strikr
  • More »

Linux commands