commit 1c5afe278764bf9ee3cbdbca9e7c1e5e251faa99
author kcc <kcc> Sat Apr 13 01:57:33 2019 +0000
committer kcc <kcc> Sat Apr 13 01:57:33 2019 +0000
tree 72036f3e953cf8023d6a089fa650567839ace3ab
parent 6f1e9bc5ddbae79e1554584d58a5aa59d1762589

[libFuzzer] speedup the merge step in the fork mode by merging only the files that have unique features.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@358320 91177308-0d34-0410-b5e6-96231b3b80d8

FuzzerLoop.cpp

diff --git a/FuzzerLoop.cpp b/FuzzerLoop.cpp
index b68d759..a323a7a 100644
--- a/FuzzerLoop.cpp
+++ b/FuzzerLoop.cpp
@@ -446,13 +446,12 @@
 }
 
 static void WriteFeatureSetToFile(const std::string &FeaturesDir,
-                                  const uint8_t Sha1[],
+                                  const std::string &FileName,
                                   const Vector<uint32_t> &FeatureSet) {
   if (FeaturesDir.empty() || FeatureSet.empty()) return;
   WriteToFile(reinterpret_cast<const uint8_t *>(FeatureSet.data()),
               FeatureSet.size() * sizeof(FeatureSet[0]),
-              DirPlusFile(FeaturesDir, Sha1ToString(Sha1)));
-  Printf("Features: %s\n", Sha1ToString(Sha1).c_str());
+              DirPlusFile(FeaturesDir, FileName));
 }
 
 static void RenameFeatureSetFile(const std::string &FeaturesDir,
@@ -490,7 +489,7 @@
     auto NewII = Corpus.AddToCorpus({Data, Data + Size}, NumNewFeatures,
                                     MayDeleteFile, TPC.ObservedFocusFunction(),
                                     UniqFeatureSetTmp, DFT, II);
-    WriteFeatureSetToFile(Options.FeaturesDir, NewII->Sha1,
+    WriteFeatureSetToFile(Options.FeaturesDir, Sha1ToString(NewII->Sha1),
                           NewII->UniqFeatureSet);
     return true;
   }