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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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81 lines
2.7 KiB
81 lines
2.7 KiB
2 years ago
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#!/bin/bash
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# Copyright 2023 The gRPC Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This tool builds and runs a fuzzer target and generates coverage report under
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# /tmp.
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#
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# Example:
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# Run fuzzer with existing corpus (no fuzzing):
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# $ ./tools/fuzzing/generate_coverage_report.sh //test/core/end2end/fuzzers:api_fuzzer test/core/end2end/fuzzers/api_fuzzer_corpus/*
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#
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# Run with fuzzing:
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# $ ./tools/fuzzing/generate_coverage_report.sh //test/core/end2end/fuzzers:api_fuzzer -max_total_time=10 test/core/end2end/fuzzers/api_fuzzer_corpus
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#
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# Note that if a crash happened during fuzzing, the coverage data will not be dumped.
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# See https://github.com/google/fuzzing/issues/41#issuecomment-1027653690 for workaround.
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err() {
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echo "$*" >&2
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}
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if [[ -z "$1" ]]; then
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err "target not specified"
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exit 1
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fi
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RANDOM=$(date +%s)
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FILENAME="${RANDOM}"
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export LLVM_PROFILE_FILE=/tmp/"${FILENAME}".profraw
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OUTPUT_BASE=$(bazel info output_base)
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MIDDLE="execroot/com_github_grpc_grpc/bazel-out/k8-dbg/bin"
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CLANG_MAJOR_VERSION=$(clang --version | grep version | sed -r 's/.*version ([^\.]+).*/\1/')
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LLVM_PROFDATA="llvm-profdata-${CLANG_MAJOR_VERSION}"
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LLVM_COV="llvm-cov-${CLANG_MAJOR_VERSION}"
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which "${LLVM_PROFDATA}"
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if (( $? != 0 )); then
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err "${LLVM_PROFDATA} not found"
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exit 1
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fi
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TARGET=$(bazel query "$1")
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TARGET_BINARY_PATH="${OUTPUT_BASE}/${MIDDLE}/$(echo ${TARGET:2} | sed 's/:/\//')"
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# Build:
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bazel build --dynamic_mode=off --config=dbg --config=fuzzer_asan --config=coverage "${TARGET}"
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# Run:
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"${TARGET_BINARY_PATH}" ${@:2}
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if [[ ! -e "${LLVM_PROFILE_FILE}" ]]; then
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err "Profile file ${LLVM_PROFILE_FILE} not created"
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exit 1
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fi
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# Create coverage report:
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"${LLVM_PROFDATA}" merge -sparse "${LLVM_PROFILE_FILE}" -o /tmp/"${FILENAME}".profdata
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"${LLVM_COV}" report "${TARGET_BINARY_PATH}" --format=text --instr-profile=/tmp/"${FILENAME}".profdata > /tmp/"${FILENAME}".cov
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if (( $? == 0 )); then
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echo "Coverage summary report created: /tmp/${FILENAME}.cov"
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echo "Merged profile data file: /tmp/${FILENAME}.profdata"
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echo "Raw profile data file: /tmp/${FILENAME}.profraw"
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echo "There are other ways to explore the data, see https://clang.llvm.org/docs/SourceBasedCodeCoverage.html#creating-coverage-reports"
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else
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err "Something went wrong"
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exit 1
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fi
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