outgoing: add a simple fastpath when there is no common This further speed up case like `hg bundle --all` for larger repository. ### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog # benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 before: 316.749699 after: 311.165461 (-1.76%, -5.58) There is further work to be done in this area like not doing any outgoing computation in the stream case for example. however the recent changes already gives use a large win for a small amount of local work. ### benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 ## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 1.263859 the-%ln-change: 0.700229 (-44.60%, -0.56) prev-changeset: 0.496050 (-60.75%, -0.77) this-changeset: 0.495243 (-60.81%, -0.77) ## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 2.975765 the-%ln-change: 1.870798 (-37.13%, -1.10) prev-changeset: 1.461583 (-50.88%, -1.51) this-changeset: 1.469185 (-50.63%, -1.51) ## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog pre-%ln-change: 4.540080 the-%ln-change: 3.401700 (-25.07%, -1.14) prev-changeset: 2.915810 (-35.78%, -1.62) this-changeset: 2.911643 (-35.87%, -1.63) ## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog pre-%ln-change: 10.138396 the-%ln-change: 7.750458 (-23.55%, -2.39) prev-changeset: 6.665565 (-34.25%, -3.47) this-changeset: 6.672078 (-34.19%, -3.47) ## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog pre-%ln-change: 399.484481 the-%ln-change: 346.508952 (-13.26%, -52.98) prev-changeset: 316.749699 (-20.71%, -82.73) this-changeset: 311.165461 (-22.11%, -88.32)

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#require test-repo py3

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  $ cd $TESTDIR/../contrib/fuzz

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  $ OUT=$TESTTMP ; export OUT

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which(1) could exit nonzero, but that's fine because we'll still end

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up without a valid executable, so we don't need to check $? here.

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  $ if which gmake >/dev/null 2>&1; then

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  >     MAKE=gmake

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  > else

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  >     MAKE=make

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  > fi

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  $ havefuzz() {

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  >     cat > $TESTTMP/dummy.cc <<EOF

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  > #include <stdlib.h>

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  > #include <stdint.h>

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  > int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }

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  > int main(int argc, char **argv) {

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  >     const char data[] = "asdf";

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  >     return LLVMFuzzerTestOneInput((const uint8_t *)data, 4);

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  > }

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  > EOF

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  >     $CXX $TESTTMP/dummy.cc -o $TESTTMP/dummy \

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  >        -fsanitize=fuzzer-no-link,address || return 1

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  > }

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Try to find a python3-config that's next to our sys.executable. If

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that doesn't work, fall back to looking for a global python3-config

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and hope that works out for the best.

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  $ PYBIN=`"$PYTHON" -c 'import sys, os; print(os.path.dirname(sys.executable))'`

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  $ if [ -x "$PYBIN/python3-config" ] ; then

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  >   PYTHON_CONFIG="$PYBIN/python3-config"

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  > else

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  >   PYTHON_CONFIG="`which python3-config`"

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  > fi

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#if clang-libfuzzer

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  $ CXX=clang++ havefuzz || exit 80

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  $ $MAKE -s clean all PYTHON_CONFIG="$PYTHON_CONFIG"

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#endif

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#if no-clang-libfuzzer clang-6.0

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  $ CXX=clang++-6.0 havefuzz || exit 80

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  $ $MAKE -s clean all CC=clang-6.0 CXX=clang++-6.0 PYTHON_CONFIG="$PYTHON_CONFIG"

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#endif

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#if no-clang-libfuzzer no-clang-6.0

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  $ exit 80

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#endif

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  $ cd $TESTTMP

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Run each fuzzer using dummy.cc as a fake input, to make sure it runs

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at all. In the future we should instead unpack the corpus for each

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fuzzer and use that instead.

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  $ for fuzzer in `ls *_fuzzer | sort` ; do

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  >   echo run $fuzzer...

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  >   ./$fuzzer dummy.cc > /dev/null 2>&1 

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  > done

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  run bdiff_fuzzer...

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  run dirs_fuzzer...

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  run dirstate_fuzzer...

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  run fm1readmarkers_fuzzer...

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  run fncache_fuzzer...

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  run jsonescapeu8fast_fuzzer...

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  run manifest_fuzzer...

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  run mpatch_fuzzer...

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  run revlog_fuzzer...

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  run xdiff_fuzzer...

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Clean up.

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  $ cd $TESTDIR/../contrib/fuzz

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  $ $MAKE -s clean