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17b04f2e04
Abipkgdiff now attempts to extract packages and compare the resulting
ELF pairs in parallel. First off, a thread is spawned to extract each
package and each debuginfo package. After the ELF files are extracted,
mapped and the threads are successfully collected, the resulting
ELF vectors are traversed to identify existing pairs and a list of
arguments for future comparison is made. This list is then sorted
by size from largest to smallest. Unless --no-parallel is
specified on the command line, MIN(pairs,active_processors) threads
are spawned, sharing a single list of arguments. This list is
processed and a map of (ELF_PATH,DIFF_CORPUS) is created. Meanwhile,
the main thread checks this same map for results in the original order
of the ELF pairs, ensuring sequential output. After all the diffing
and reporting is done, the threads are collected again.
* doc/manuals/abipkgdiff.rst: Mention the new --no-parallel option.
* tools/Makefile.am: Add -pthread to abipkgdiffs link options.
* tools/abipkgdiff.cc (elf_file_paths_tls_key): New key for the
thread-local vector of ELF filepaths.
(reports_map): A map of the path of the first ELF of a compared pair
and a corpus representing the difference.
(env_map): A map of the corpus difference and a corresponding
environment needed to be kept alive until the diff is reported.
({arg,map}_lock): mutexes to control access to the comparison argument
list and the {reports,env}_map respectively.
(options): Add a new member "parallel" and set it to true in the ctor.
(elf_file): Add a new "size" member and set it in the ctor.
(package descriptor): Arguments passed to extract_package_set.
(compare_args): Arguments passed to the ELF comparison function.
(display_usage): Mention the new "--no-parallel" option.
(pthread_routine_extract_package): A wrapper function around
extract_package to be used in a multi-threaded environment.
({first_second}_package_tree_walker_callback_fn): Add the new ELF file
paths to a thread-specific vector.
(compare): In an overload of compare, verbose output is updated to
always mention the ELF files being compared for each reported stage.
Reporting is no longer done in this function, the resulting difference
is instead passed back to the calling function for reporting in the
main thread, along with a corresponding environment.
(pthread_routine_compare): Accept a pointer to a vector of comparison
arguments. This function is to be called NTHREAD times and share the
vector passed to it with its other invocations. Create the environment
for compare() and store its output in a map if there is a difference.
(create_maps_of_package_content): Allocate memory for a thread local
vector of ELF paths and dispose of it before returning.
(pthread_routine_extract_pkg_and_map_its_content): Renamed from
extract_package_and_map_its_content. Extract the debuginfo as well as
the regular package in this function. Spawn a separate thread for the
extraction of the debug package.
(pthread_join): A function handling thread joining throughout package
extractions.
(prepare_packages): Spawn a thread to extract each set of packages.
(elf_size_is_greater): New comparison function used to order ELF pairs
by size.
(compare): In the overload of compare, pass through the ELF path
vectors and identify pairs to be diffed. Put them in a vector and sort
it by the summed ELF pair size. Spawn comparison threads and safely
check for results in the proper order of the ELF pairs. Report any
differences ASAP and collect the threads after all the reporting is
done, checking their return status.
(parse_command_line): Check for the "--no-parallel" option.
Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
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| .. | ||
| api | ||
| manuals | ||
| vizualization | ||
| website | ||
| Makefile.am | ||
| suppr-doc.txt | ||