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changegroup: add functionality to skip adding changelog data to changegroup...
changegroup: add functionality to skip adding changelog data to changegroup In narrow extension, when we have a non-ellipses narrow working copy and we extend it, we pull all the changelog data again and the client tries to reapply all that changelog data. While downloading millions of changeset data is still not very expensive but applying them on the client side is very expensive and takes ~10 minutes. These 10 minutes are added to every `hg tracked --addinclude <>` call and extending a narrow copy becomes very slow. This patch adds a new changelog argument to cgpacker.generate() fn. If the changelog argument is set to False, we won't yield the changelog data. We still have to iterate over the deltas returned by _generatechangelog() because that's a generator and builds the data for clstate variable which is required for calculating manifests and filelogs. Differential Revision: https://phab.mercurial-scm.org/D4638
Augie Fackler - - Load All Authors

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Makefile
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CC = clang
CXX = clang++
all: bdiff mpatch xdiff
fuzzutil.o: fuzzutil.cc fuzzutil.h
$(CXX) $(CXXFLAGS) -g -O1 -fsanitize=fuzzer-no-link,address \
-std=c++17 \
-I../../mercurial -c -o fuzzutil.o fuzzutil.cc
fuzzutil-oss-fuzz.o: fuzzutil.cc fuzzutil.h
$(CXX) $(CXXFLAGS) -std=c++17 \
-I../../mercurial -c -o fuzzutil-oss-fuzz.o fuzzutil.cc
bdiff.o: ../../mercurial/bdiff.c
$(CC) $(CFLAGS) -fsanitize=fuzzer-no-link,address -c -o bdiff.o \
../../mercurial/bdiff.c
bdiff: bdiff.cc bdiff.o fuzzutil.o
$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
-std=c++17 \
-I../../mercurial bdiff.cc bdiff.o fuzzutil.o -o bdiff
bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
$(CC) $(CFLAGS) -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c
bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o fuzzutil-oss-fuzz.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial bdiff.cc \
bdiff-oss-fuzz.o fuzzutil-oss-fuzz.o -lFuzzingEngine -o \
$$OUT/bdiff_fuzzer
mpatch.o: ../../mercurial/mpatch.c
$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c -o mpatch.o \
../../mercurial/mpatch.c
mpatch: CXXFLAGS += -std=c++17
mpatch: mpatch.cc mpatch.o fuzzutil.o
$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
-I../../mercurial mpatch.cc mpatch.o fuzzutil.o -o mpatch
mpatch-oss-fuzz.o: ../../mercurial/mpatch.c
$(CC) $(CFLAGS) -c -o mpatch-oss-fuzz.o ../../mercurial/mpatch.c
mpatch_fuzzer: mpatch.cc mpatch-oss-fuzz.o fuzzutil-oss-fuzz.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial mpatch.cc \
mpatch-oss-fuzz.o fuzzutil-oss-fuzz.o -lFuzzingEngine -o \
$$OUT/mpatch_fuzzer
mpatch_corpus.zip:
python mpatch_corpus.py $$OUT/mpatch_fuzzer_seed_corpus.zip
x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c \
-o $@ \
$<
xdiff: CXXFLAGS += -std=c++17
xdiff: xdiff.cc xdiffi.o xprepare.o xutils.o fuzzutil.o
$(CXX) $(CXXFLAGS) -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
-I../../mercurial xdiff.cc \
xdiffi.o xprepare.o xutils.o fuzzutil.o -o xdiff
fuzz-x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
$(CC) $(CFLAGS) -c \
-o $@ \
$<
xdiff_fuzzer: xdiff.cc fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o fuzzutil-oss-fuzz.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial xdiff.cc \
fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o fuzzutil-oss-fuzz.o \
-lFuzzingEngine -o $$OUT/xdiff_fuzzer
clean:
$(RM) *.o *_fuzzer \
bdiff \
mpatch \
xdiff
oss-fuzz: bdiff_fuzzer mpatch_fuzzer mpatch_corpus.zip xdiff_fuzzer
.PHONY: all clean oss-fuzz