fix(libsinsp): expose main thread fd table

[mrgian]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind design

/kind documentation

/kind failing-test

/kind feature

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area API-version

/area build

/area CI

/area driver-kmod

/area driver-bpf

/area driver-modern-bpf

/area libscap-engine-bpf

/area libscap-engine-gvisor

/area libscap-engine-kmod

/area libscap-engine-modern-bpf

/area libscap-engine-nodriver

/area libscap-engine-noop

/area libscap-engine-source-plugin

/area libscap-engine-savefile

/area libscap

/area libpman

/area libsinsp

/area tests

/area proposals

Does this PR require a change in the driver versions?

/version driver-API-version-major

/version driver-API-version-minor

/version driver-API-version-patch

/version driver-SCHEMA-version-major

/version driver-SCHEMA-version-minor

/version driver-SCHEMA-version-patch

What this PR does / why we need it: This PR ensures that the plugin API exposes the file descriptor table of its main thread instead of its own. Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

fix(libsinsp): expose main thread fd table

[github-actions[bot]]

Perf diff from master - unit tests

     5.69%     -1.35%  [.] next
     3.11%     +0.63%  [.] gzfile_read
     8.07%     -0.57%  [.] sinsp::next
     0.72%     +0.57%  [.] libsinsp::state::stl_container_table_adapter<std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, libsinsp::state::value_table_entry_adapter<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, libsinsp::state::value_table_entry_adapter<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::dynamic_fields_t>::stl_container_table_adapter
     1.29%     -0.55%  [.] sinsp_parser::parse_context_switch
     4.04%     +0.51%  [.] sinsp_evt::load_params
     0.31%     +0.48%  [.] copy_and_sanitize_path
     2.58%     -0.46%  [.] sinsp_thread_manager::get_thread_ref
     0.46%     +0.46%  [.] scap_event_encode_params_v
     0.72%     -0.44%  [.] libsinsp::state::stl_container_table_adapter<std::vector<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, libsinsp::state::pair_table_entry_adapter<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, libsinsp::state::pair_table_entry_adapter<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::dynamic_fields_t>::stl_container_table_adapter

Heap diff from master - unit tests

peak heap memory consumption: -80.01K
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Heap diff from master - scap file

peak heap memory consumption: -2.02K
peak RSS (including heaptrack overhead): 0B
total memory leaked: 0B

Benchmarks diff from master

Comparing gbench_data.json to /root/actions-runner/_work/libs/libs/build/gbench_data.json
Benchmark                                                         Time             CPU      Time Old      Time New       CPU Old       CPU New
----------------------------------------------------------------------------------------------------------------------------------------------
BM_sinsp_split_mean                                            +0.0015         +0.0015           151           151           151           151
BM_sinsp_split_median                                          -0.0106         -0.0106           153           151           153           151
BM_sinsp_split_stddev                                          -0.7564         -0.7564             5             1             5             1
BM_sinsp_split_cv                                              -0.7567         -0.7568             0             0             0             0
BM_sinsp_concatenate_paths_relative_path_mean                  +0.0956         +0.0957            56            61            56            61
BM_sinsp_concatenate_paths_relative_path_median                +0.0884         +0.0885            56            60            56            60
BM_sinsp_concatenate_paths_relative_path_stddev                +2.2877         +2.2877             0             1             0             1
BM_sinsp_concatenate_paths_relative_path_cv                    +2.0007         +2.0004             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_mean                     -0.0122         -0.0121            25            25            25            25
BM_sinsp_concatenate_paths_empty_path_median                   -0.0135         -0.0134            25            25            25            25
BM_sinsp_concatenate_paths_empty_path_stddev                   -0.0556         -0.0523             0             0             0             0
BM_sinsp_concatenate_paths_empty_path_cv                       -0.0439         -0.0406             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_mean                  +0.0801         +0.0801            56            61            56            61
BM_sinsp_concatenate_paths_absolute_path_median                +0.0781         +0.0781            56            61            56            61
BM_sinsp_concatenate_paths_absolute_path_stddev                +0.1212         +0.1217             0             0             0             0
BM_sinsp_concatenate_paths_absolute_path_cv                    +0.0381         +0.0385             0             0             0             0
BM_sinsp_split_container_image_mean                            +0.0114         +0.0114           391           396           391           395
BM_sinsp_split_container_image_median                          +0.0118         +0.0118           391           396           391           396
BM_sinsp_split_container_image_stddev                          +0.5866         +0.5874             3             5             3             5
BM_sinsp_split_container_image_cv                              +0.5688         +0.5695             0             0             0             0

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 74.46%. Comparing base (b4ca436) to head (4dc461c). Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2133   +/-   ##
=======================================
  Coverage   74.46%   74.46%           
=======================================
  Files         254      254           
  Lines       33333    33340    +7     
  Branches     5708     5715    +7     
=======================================
+ Hits        24820    24827    +7     
+ Misses       8487     8486    -1     
- Partials       26       27    +1     

Flag	Coverage Δ
libsinsp	74.46% <100.00%> (+<0.01%)	:arrow_up:

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[mrgian]

/cc @Andreagit97 @jasondellaluce

[poiana]

LGTM label has been added.

Git tree hash: bc6dcb27c550d8a5c39f8548bf0ee496a702cb78

[FedeDP]

Can you rebase on latest master to unlock arm64 CI? :) We switched runners from actuated to the cncf provided ones.

[poiana]

LGTM label has been added.

Git tree hash: cd0c762c0a1f4fe7c48126c46d71b08230a0be72

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

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