[compiler-rt] r177520 - tsan: reduce size of mutexsets from 64 to 16 mutexes

[Dmitry Vyukov]

Author: dvyukov
Date: Wed Mar 20 08:50:47 2013
New Revision: 177520

URL: http://llvm.org/viewvc/llvm-project?rev=177520&view=rev
Log:
tsan: reduce size of mutexsets from 64 to 16 mutexes
overflow is handled anyway
saves memory because each thread holds 1024 mutexsets


Modified:
    compiler-rt/trunk/lib/tsan/lit_tests/java_lock.cc
    compiler-rt/trunk/lib/tsan/rtl/tsan_mutexset.h

Modified: compiler-rt/trunk/lib/tsan/lit_tests/java_lock.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/lit_tests/java_lock.cc?rev=177520&r1=177519&r2=177520&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/lit_tests/java_lock.cc (original)
+++ compiler-rt/trunk/lib/tsan/lit_tests/java_lock.cc Wed Mar 20 08:50:47 2013
@@ -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);

Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_mutexset.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_mutexset.h?rev=177520&r1=177519&r2=177520&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_mutexset.h (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_mutexset.h Wed Mar 20 08:50:47 2013
@@ -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;