commit 8da9479e40512b3d1069cc5928c8aaca989fc124
author Kostya Serebryany <kcc@google.com> Thu Jan 31 00:09:43 2019 +0000
committer Kostya Serebryany <kcc@google.com> Thu Jan 31 00:09:43 2019 +0000
tree 2230d9b1347d0a97074e066be25309a19e6271af
parent 49c4c68919ae1be62665e6f0a58d97ae6aad1125

[libFuzzer] experimental performance optimization -lazy_counters, off by default. Posix-only for now, tested on Linux

llvm-svn: 352700

compiler-rt/lib/fuzzer/FuzzerLoop.cpp

diff --git a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
index 0247b57..959d5a2 100644
--- a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
@@ -205,6 +205,11 @@
   F->CrashCallback();
 }
 
+void Fuzzer::StaticSegvSignalCallback(void *Addr) {
+  if (TPC.UnprotectLazyCounters(Addr)) return;
+  StaticCrashSignalCallback();
+}
+
 void Fuzzer::StaticExitCallback() {
   assert(F);
   F->ExitCallback();