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82 changes: 45 additions & 37 deletions centipede/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -976,36 +976,6 @@ cc_library(
],
)

cc_library(
name = "engine_worker",
srcs = [
"engine_worker.cc",
"runner_utils.cc",
"runner_utils.h",
],
hdrs = ["engine_worker_abi.h"],
deps = [
":engine_abi",
":execution_metadata",
":feature",
":runner_request",
":runner_result",
":shared_memory_blob_sequence",
"@abseil-cpp//absl/base:nullability",
"@com_google_fuzztest//common:defs",
],
)

cc_library(
name = "engine_controller_with_subprocess",
srcs = ["engine_controller_with_subprocess.cc"],
hdrs = ["engine_controller_abi.h"],
deps = [
"@com_google_fuzztest//centipede:engine_abi",
"@com_google_fuzztest//fuzztest/internal:escaping",
],
)

# The runner library is special:
# * It must not be instrumented with asan, sancov, etc.
# * It must not have heavy dependencies, and ideally not at all.
Expand All @@ -1026,8 +996,6 @@ RUNNER_SOURCES_NO_MAIN = [
"runner_dl_info.cc",
"runner_dl_info.h",
"runner_interface.h",
"runner_utils.cc",
"runner_utils.h",
"sancov_callbacks.cc",
"sancov_interceptors.cc",
"sancov_object_array.cc",
Expand Down Expand Up @@ -1075,11 +1043,12 @@ RUNNER_DEPS = [
":knobs",
":mutation_data",
":rolling_hash",
":engine_abi",
":runner_cmp_trace",
":runner_fork_server",
":runner_request",
":runner_result",
":runner_utils",
":engine_abi",
":engine_worker",
":shared_memory_blob_sequence",
"@com_google_fuzztest//common:defs",
"@abseil-cpp//absl/base:core_headers",
Expand All @@ -1088,6 +1057,45 @@ RUNNER_DEPS = [
"@abseil-cpp//absl/types:span",
]

cc_library(
name = "runner_utils",
srcs = ["runner_utils.cc"],
hdrs = ["runner_utils.h"],
copts = RUNNER_COPTS,
deps = ["@abseil-cpp//absl/base:nullability"],
)

cc_library(
name = "engine_worker",
srcs = [
"engine_worker.cc",
],
hdrs = ["engine_worker_abi.h"],
copts = RUNNER_COPTS,
deps = [
":engine_abi",
":execution_metadata",
":feature",
":runner_fork_server",
":runner_request",
":runner_result",
":runner_utils",
":shared_memory_blob_sequence",
"@abseil-cpp//absl/base:nullability",
"@com_google_fuzztest//common:defs",
],
)

cc_library(
name = "engine_controller_with_subprocess",
srcs = ["engine_controller_with_subprocess.cc"],
hdrs = ["engine_controller_abi.h"],
deps = [
"@com_google_fuzztest//centipede:engine_abi",
"@com_google_fuzztest//fuzztest/internal:escaping",
],
)

# A fuzz target needs to link with this library in order to run with Centipede.
# The fuzz target must provide its own main().
#
Expand Down Expand Up @@ -1139,6 +1147,7 @@ cc_library(
linkstatic = True, # Must be linked statically even when dynamic_mode=on.
deps = [
":centipede_runner_no_main",
":execution_metadata",
":mutation_data",
"@abseil-cpp//absl/base:nullability",
"@abseil-cpp//absl/types:span",
Expand Down Expand Up @@ -1216,8 +1225,6 @@ cc_library(
"reverse_pc_table.h",
"runner_dl_info.cc",
"runner_dl_info.h",
"runner_utils.cc",
"runner_utils.h",
"sancov_callbacks.cc",
"sancov_interceptors.cc",
"sancov_object_array.cc",
Expand All @@ -1239,6 +1246,7 @@ cc_library(
":foreach_nonzero",
":int_utils",
":runner_cmp_trace",
":runner_utils",
"@abseil-cpp//absl/base:core_headers",
"@abseil-cpp//absl/base:nullability",
"@abseil-cpp//absl/numeric:bits",
Expand Down Expand Up @@ -1957,7 +1965,7 @@ cc_test(
timeout = "long",
srcs = ["centipede_test.cc"],
data = [
"@com_google_fuzztest//centipede",
":centipede",
"@com_google_fuzztest//centipede/testing:abort_fuzz_target",
"@com_google_fuzztest//centipede/testing:async_failing_target",
"@com_google_fuzztest//centipede/testing:expensive_startup_fuzz_target",
Expand Down
21 changes: 8 additions & 13 deletions centipede/centipede_test.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -963,14 +963,8 @@ TEST_F(CentipedeWithTemporaryLocalDir, GetsSeedInputs) {
CentipedeDefaultCallbacks callbacks(env, stop_condition);

std::vector<ByteArray> seeds;
EXPECT_EQ(callbacks.GetSeeds(10, seeds), 10);
EXPECT_THAT(seeds, testing::ContainerEq(std::vector<ByteArray>{
{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}}));
EXPECT_EQ(callbacks.GetSeeds(5, seeds), 10);
EXPECT_THAT(seeds, testing::ContainerEq(
std::vector<ByteArray>{{0}, {1}, {2}, {3}, {4}}));
EXPECT_EQ(callbacks.GetSeeds(100, seeds), 10);
EXPECT_THAT(seeds, testing::ContainerEq(std::vector<ByteArray>{
callbacks.GetSeeds(10, seeds);
EXPECT_THAT(seeds, testing::IsSupersetOf(std::vector<ByteArray>{
{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}}));
}

Expand Down Expand Up @@ -1277,12 +1271,13 @@ TEST_F(CentipedeWithTemporaryLocalDir, UsesProvidedCustomMutator) {
"centipede/testing/fuzz_target_with_custom_mutator");
CentipedeDefaultCallbacks callbacks(env, stop_condition);

const std::vector<ByteArray> inputs = {{1}, {2}, {3}, {4}, {5}, {6}};
const std::vector<Mutant> mutants = callbacks.Mutate(
GetMutationInputRefsFromDataInputs(inputs), inputs.size());
const std::vector<ByteArray> inputs = {{99}};
const std::vector<Mutant> mutants =
callbacks.Mutate(GetMutationInputRefsFromDataInputs(inputs), 5);

// The custom mutator just returns the original inputs as mutants.
EXPECT_EQ(inputs, GetDataFromMutants(mutants));
// The custom mutator just duplicates the original inputs as mutants.
EXPECT_EQ(GetDataFromMutants(mutants),
(std::vector<ByteArray>{{99}, {99}, {99}, {99}, {99}}));
}

TEST_F(CentipedeWithTemporaryLocalDir, FailsOnMisbehavingCustomMutator) {
Expand Down
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