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Merge branch 'tb/multi-pack-verbatim-reuse'

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Streaming spans of packfile data used to be done only from a
single, primary, pack in a repository with multiple packfiles.  It
has been extended to allow reuse from other packfiles, too.

* tb/multi-pack-verbatim-reuse: (26 commits)
  t/perf: add performance tests for multi-pack reuse
  pack-bitmap: enable reuse from all bitmapped packs
  pack-objects: allow setting `pack.allowPackReuse` to "single"
  t/test-lib-functions.sh: implement `test_trace2_data` helper
  pack-objects: add tracing for various packfile metrics
  pack-bitmap: prepare to mark objects from multiple packs for reuse
  pack-revindex: implement `midx_pair_to_pack_pos()`
  pack-revindex: factor out `midx_key_to_pack_pos()` helper
  midx: implement `midx_preferred_pack()`
  git-compat-util.h: implement checked size_t to uint32_t conversion
  pack-objects: include number of packs reused in output
  pack-objects: prepare `write_reused_pack_verbatim()` for multi-pack reuse
  pack-objects: prepare `write_reused_pack()` for multi-pack reuse
  pack-objects: pass `bitmapped_pack`'s to pack-reuse functions
  pack-objects: keep track of `pack_start` for each reuse pack
  pack-objects: parameterize pack-reuse routines over a single pack
  pack-bitmap: return multiple packs via `reuse_partial_packfile_from_bitmap()`
  pack-bitmap: simplify `reuse_partial_packfile_from_bitmap()` signature
  ewah: implement `bitmap_is_empty()`
  pack-bitmap: pass `bitmapped_pack` struct to pack-reuse functions
  ...
This commit is contained in:
Junio C Hamano
2024-01-12 16:09:56 -08:00
parent 0ebbaa07d0 ba47d88795
commit 0fea6b73f1
21 changed files with 1036 additions and 195 deletions
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14
t/test-lib-functions.sh
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@ -1874,6 +1874,20 @@ test_region () {
return 0
}
# Check that the given data fragment was included as part of the
# trace2-format trace on stdin.
#
# test_trace2_data <category> <key> <value>
#
# For example, to look for trace2_data_intmax("pack-objects", repo,
# "reused", N) in an invocation of "git pack-objects", run:
#
# GIT_TRACE2_EVENT="$(pwd)/trace.txt" git pack-objects ... &&
# test_trace2_data pack-objects reused N <trace2.txt
test_trace2_data () {
grep -e '"category":"'"$1"'","key":"'"$2"'","value":"'"$3"'"'
}
# Given a GIT_TRACE2_EVENT log over stdin, writes to stdout a list of URLs
# sent to git-remote-https child processes.
test_remote_https_urls() {