[libFuzzer] reimplement experimental_len_control=1: bump the temporary max_len every time we failed to find new coverage during the last 1000 runs and 1 second. Also fix FileToVector to not load unfinished files

llvm-svn: 308811

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/Fuzzer/FuzzerInternal.h b/llvm/lib/Fuzzer/FuzzerInternal.h
index 8602818a420..1d68c01908f 100644
--- a/llvm/lib/Fuzzer/FuzzerInternal.h
+++ b/llvm/lib/Fuzzer/FuzzerInternal.h
@@ -118,6 +118,10 @@ private:
   size_t TotalNumberOfRuns = 0;
   size_t NumberOfNewUnitsAdded = 0;
 
+  size_t LastCorpusUpdateRun = 0;
+  system_clock::time_point LastCorpusUpdateTime = system_clock::now();
+
+
   bool HasMoreMallocsThanFrees = false;
   size_t NumberOfLeakDetectionAttempts = 0;
 
@@ -133,6 +137,7 @@ private:
 
   size_t MaxInputLen = 0;
   size_t MaxMutationLen = 0;
+  size_t TmpMaxMutationLen = 0;
 
   std::vector<uint32_t> UniqFeatureSetTmp;