MIPS: Reduced the number of threads in cctest test-lockers.

Some MIPS boards could not handle the large number of threads and failed these tests.

BUG=
TEST=
Review URL: http://codereview.chromium.org/8506008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10048 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-lockers.cc

@@ -204,7 +204,11 @@ static void StartJoinAndDeleteThreads(const i::List<JoinableThread*>& threads) {
 
 // Run many threads all locking on the same isolate
 TEST(IsolateLockingStress) {
+#ifdef V8_TARGET_ARCH_MIPS
+  const int kNThreads = 50;
+#else
   const int kNThreads = 100;
+#endif
   i::List<JoinableThread*> threads(kNThreads);
   v8::Isolate* isolate = v8::Isolate::New();
   for (int i = 0; i < kNThreads; i++) {
@@ -237,7 +241,7 @@ class IsolateNonlockingThread : public JoinableThread {
 
 // Run many threads each accessing its own isolate without locking
 TEST(MultithreadedParallelIsolates) {
-#ifdef V8_TARGET_ARCH_ARM
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
   const int kNThreads = 10;
 #else
   const int kNThreads = 50;
@@ -275,7 +279,11 @@ class IsolateNestedLockingThread : public JoinableThread {
 
 // Run  many threads with nested locks
 TEST(IsolateNestedLocking) {
+#ifdef V8_TARGET_ARCH_MIPS
+  const int kNThreads = 50;
+#else
   const int kNThreads = 100;
+#endif
   v8::Isolate* isolate = v8::Isolate::New();
   i::List<JoinableThread*> threads(kNThreads);
   for (int i = 0; i < kNThreads; i++) {
@@ -311,7 +319,7 @@ class SeparateIsolatesLocksNonexclusiveThread : public JoinableThread {
 
 // Run parallel threads that lock and access different isolates in parallel
 TEST(SeparateIsolatesLocksNonexclusive) {
-#ifdef V8_TARGET_ARCH_ARM
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
   const int kNThreads = 50;
 #else
   const int kNThreads = 100;
@@ -385,7 +393,7 @@ class LockerUnlockerThread : public JoinableThread {
 
 // Use unlocker inside of a Locker, multiple threads.
 TEST(LockerUnlocker) {
-#ifdef V8_TARGET_ARCH_ARM
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
   const int kNThreads = 50;
 #else
   const int kNThreads = 100;
@@ -438,7 +446,7 @@ class LockTwiceAndUnlockThread : public JoinableThread {
 
 // Use Unlocker inside two Lockers.
 TEST(LockTwiceAndUnlock) {
-#ifdef V8_TARGET_ARCH_ARM
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
   const int kNThreads = 50;
 #else
   const int kNThreads = 100;
@@ -559,7 +567,11 @@ class LockUnlockLockThread : public JoinableThread {
 
 // Locker inside an Unlocker inside a Locker.
 TEST(LockUnlockLockMultithreaded) {
+#ifdef V8_TARGET_ARCH_MIPS
+  const int kNThreads = 50;
+#else
   const int kNThreads = 100;
+#endif
   v8::Isolate* isolate = v8::Isolate::New();
   Persistent<v8::Context> context;
   {
@@ -606,7 +618,11 @@ class LockUnlockLockDefaultIsolateThread : public JoinableThread {
 
 // Locker inside an Unlocker inside a Locker for default isolate.
 TEST(LockUnlockLockDefaultIsolateMultithreaded) {
+#ifdef V8_TARGET_ARCH_MIPS
+  const int kNThreads = 50;
+#else
   const int kNThreads = 100;
+#endif
   Persistent<v8::Context> context;
   {
     v8::Locker locker_;
@@ -674,7 +690,7 @@ class IsolateGenesisThread : public JoinableThread {
 // Test installing extensions in separate isolates concurrently.
 // http://code.google.com/p/v8/issues/detail?id=1821
 TEST(ExtensionsRegistration) {
-#if defined V8_TARGET_ARCH_ARM || defined V8_HOST_ARCH_MIPS
+#if defined(V8_TARGET_ARCH_ARM) || defined(V8_TARGET_ARCH_MIPS)
   const int kNThreads = 10;
 #else
   const int kNThreads = 40;