11.2 Invoking gcov-tool

gcov-tool [global-options] SUB_COMMAND [sub_command-options] profile_dir

gcov-tool accepts the following options:

-h

--help

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

-v

--version

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

merge

Merge two profile directories.

-o directory

--output directory

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

-v

--verbose

Set the verbose mode.

-w w1,w2

--weight w1,w2

Set the merge weights of the directory1 and directory2, respectively. The default weights are 1 for both.

merge-stream

Collect profiles with associated filenames from a gcfn and gcda data stream. Read the stream from the file specified by file or from stdin. Merge the profiles with associated profiles in the host filesystem. Apply the optional weights while merging profiles.

For the generation of a gcfn and gcda data stream on the target system, please have a look at the __gcov_filename_to_gcfn() and __gcov_info_to_gcda() functions declared in #include <gcov.h>.

-v

--verbose

Set the verbose mode.

-w w1,w2

--weight w1,w2

Set the merge weights of the profiles from the gcfn and gcda data stream and the associated profiles in the host filesystem, respectively. The default weights are 1 for both.

rewrite

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

-n long_long_value

--normalize <long_long_value>

Normalize the profile. The specified value is the max counter value in the new profile.

-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.

-v

--verbose

Set the verbose mode.

overlap

Compute 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.

-f

--function

Print function level overlap score.

-F

--fullname

Print full gcda filename.

-h

--hotonly

Only print info for hot objects/functions.

-o

--object

Print object level overlap score.

-t float

--hot_threshold <float>

Set the threshold for hot counter value.

-v

--verbose

Set the verbose mode.