Replace a few noisy/secondary/rarely useful LOGs with VLOGs

Abseil hasn't open-sourced VLOGs: we may roll out our own polyfill.

PiperOrigin-RevId: 521855604

centipede.cc

@@ -174,8 +174,10 @@ int Centipede::ExportCorpusFromLocalDir(const Environment &env,
       CHECK_OK(appender->Append(input));
       ++inputs_added;
     }
-    LOG(INFO) << VV(shard) << VV(inputs_added) << VV(inputs_ignored)
-              << VV(num_shard_bytes) << VV(shard_data.size());
+
+    VLOG(1) << "Exported: " << VV(shard) << VV(inputs_added)
+            << VV(inputs_ignored) << VV(num_shard_bytes)
+            << VV(shard_data.size());
   }
   CHECK_EQ(total_paths, inputs_added + inputs_ignored);
   return 0;
@@ -550,9 +552,9 @@ void Centipede::MergeFromOtherCorpus(std::string_view merge_from_dir,
 }
 
 void Centipede::FuzzingLoop() {
-  LOG(INFO) << "Shard: " << env_.my_shard_index << "/" << env_.total_shards
-            << " " << TemporaryLocalDirPath() << " "
-            << "seed: " << env_.seed << "\n\n\n";
+  LOG(INFO) << "\n\nFuzzing: shard: " << env_.my_shard_index << "/"
+            << env_.total_shards << " " << TemporaryLocalDirPath() << " "
+            << "seed: " << env_.seed << "\n\n";
 
   {
     // Execute a dummy input.

testing/centipede_test.cc

@@ -168,6 +168,8 @@ TEST(Centipede, ShardsAndDistillTest) {
   env.corpus_dir.push_back(tmp_dir.CreateSubdir("cd1"));
   env.corpus_dir.push_back(tmp_dir.CreateSubdir("cd2"));
 
+  VLOG(1) << "Fuzzing";
+
   CentipedeMock mock(env);
   // First round of runs: do the actual fuzzing, compute the features.
   size_t max_shard_size = 0;
@@ -187,6 +189,8 @@ TEST(Centipede, ShardsAndDistillTest) {
   EXPECT_GT(CountFilesInDir(env.corpus_dir[0]), 128);
   EXPECT_EQ(CountFilesInDir(env.corpus_dir[1]), 0);
 
+  VLOG(1) << "Distilling";
+
   // Second round of runs. Don't fuzz, only distill.
   // Don't distill in the last one to test the flag behaviour.
   env.distill_shards = env.total_shards - 1;
@@ -473,7 +477,6 @@ static std::vector<ByteArray> RunWithFunctionFilter(
   FunctionFilterMock mock(env);
   MockFactory factory(mock);
   CentipedeMain(env, factory);
-  LOG(INFO) << mock.observed_inputs_.size();
   std::vector<ByteArray> res(mock.observed_inputs_.begin(),
                              mock.observed_inputs_.end());
   std::sort(res.begin(), res.end());
@@ -653,9 +656,6 @@ TEST(Centipede, UndetectedCrashingInput) {
   constexpr size_t kCrashingInputIdx =
       (kNumBatches / 2) * kBatchSize + kCrashingInputIdxInBatch;
 
-  LOG(INFO) << VV(kNumBatches) << VV(kBatchSize)
-            << VV(kCrashingInputIdxInBatch) VV(kCrashingInputIdx);
-
   TempDir temp_dir{test_info_->name()};
   Environment env;
   env.workdir = temp_dir.path();