tsan: reduce size of mutexsets from 64 to 16 mutexes

overflow is handled anyway
saves memory because each thread holds 1024 mutexsets

llvm-svn: 177520

diff --git a/compiler-rt/lib/tsan/lit_tests/java_lock.cc b/compiler-rt/lib/tsan/lit_tests/java_lock.cc
index f66f1e7..d9db103 100644 (file)
--- a/compiler-rt/lib/tsan/lit_tests/java_lock.cc
+++ b/compiler-rt/lib/tsan/lit_tests/java_lock.cc
@@ -1,10 +1,12 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
 #include "java.h"
+#include <unistd.h>
 
 jptr varaddr;
 jptr lockaddr;
 
 void *Thread(void *p) {
+  sleep(1);
   __tsan_java_mutex_lock(lockaddr);
   *(int*)varaddr = 42;
   __tsan_java_mutex_unlock(lockaddr);

diff --git a/compiler-rt/lib/tsan/rtl/tsan_mutexset.h b/compiler-rt/lib/tsan/rtl/tsan_mutexset.h
index 09223ff..eebfd4d 100644 (file)
--- a/compiler-rt/lib/tsan/rtl/tsan_mutexset.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_mutexset.h
@@ -22,7 +22,7 @@ class MutexSet {
  public:
   // Holds limited number of mutexes.
   // The oldest mutexes are discarded on overflow.
-  static const uptr kMaxSize = 64;
+  static const uptr kMaxSize = 16;
   struct Desc {
     u64 id;
     u64 epoch;