1// Copyright 2008 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
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5//
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8//     * Redistributions in binary form must reproduce the above
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15//
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27
28#include "src/v8.h"
29
30#include "src/platform.h"
31#include "src/isolate.h"
32
33#include "test/cctest/cctest.h"
34
35
36enum Turn {
37  FILL_CACHE,
38  CLEAN_CACHE,
39  SECOND_TIME_FILL_CACHE,
40  DONE
41};
42
43static Turn turn = FILL_CACHE;
44
45
46class ThreadA : public v8::internal::Thread {
47 public:
48  ThreadA() : Thread("ThreadA") { }
49  void Run() {
50    v8::Isolate* isolate = CcTest::isolate();
51    v8::Locker locker(isolate);
52    v8::Isolate::Scope isolate_scope(isolate);
53    v8::HandleScope scope(isolate);
54    v8::Handle<v8::Context> context = v8::Context::New(isolate);
55    v8::Context::Scope context_scope(context);
56
57    CHECK_EQ(FILL_CACHE, turn);
58
59    // Fill String.search cache.
60    v8::Handle<v8::Script> script = v8::Script::Compile(
61        v8::String::NewFromUtf8(
62          isolate,
63          "for (var i = 0; i < 3; i++) {"
64          "  var result = \"a\".search(\"a\");"
65          "  if (result != 0) throw \"result: \" + result + \" @\" + i;"
66          "};"
67          "true"));
68    CHECK(script->Run()->IsTrue());
69
70    turn = CLEAN_CACHE;
71    do {
72      {
73        v8::Unlocker unlocker(CcTest::isolate());
74        Thread::YieldCPU();
75      }
76    } while (turn != SECOND_TIME_FILL_CACHE);
77
78    // Rerun the script.
79    CHECK(script->Run()->IsTrue());
80
81    turn = DONE;
82  }
83};
84
85
86class ThreadB : public v8::internal::Thread {
87 public:
88  ThreadB() : Thread("ThreadB") { }
89  void Run() {
90    do {
91      {
92        v8::Isolate* isolate = CcTest::isolate();
93        v8::Locker locker(isolate);
94        v8::Isolate::Scope isolate_scope(isolate);
95        if (turn == CLEAN_CACHE) {
96          v8::HandleScope scope(isolate);
97          v8::Handle<v8::Context> context = v8::Context::New(isolate);
98          v8::Context::Scope context_scope(context);
99
100          // Clear the caches by forcing major GC.
101          CcTest::heap()->CollectAllGarbage(v8::internal::Heap::kNoGCFlags);
102          turn = SECOND_TIME_FILL_CACHE;
103          break;
104        }
105      }
106
107      Thread::YieldCPU();
108    } while (true);
109  }
110};
111
112
113TEST(JSFunctionResultCachesInTwoThreads) {
114  ThreadA threadA;
115  ThreadB threadB;
116
117  threadA.Start();
118  threadB.Start();
119
120  threadA.Join();
121  threadB.Join();
122
123  CHECK_EQ(DONE, turn);
124}
125
126class ThreadIdValidationThread : public v8::internal::Thread {
127 public:
128  ThreadIdValidationThread(i::Thread* thread_to_start,
129                           i::List<i::ThreadId>* refs,
130                           unsigned int thread_no,
131                           i::Semaphore* semaphore)
132    : Thread("ThreadRefValidationThread"),
133      refs_(refs), thread_no_(thread_no), thread_to_start_(thread_to_start),
134      semaphore_(semaphore) {
135  }
136
137  void Run() {
138    i::ThreadId thread_id = i::ThreadId::Current();
139    for (int i = 0; i < thread_no_; i++) {
140      CHECK(!(*refs_)[i].Equals(thread_id));
141    }
142    CHECK(thread_id.IsValid());
143    (*refs_)[thread_no_] = thread_id;
144    if (thread_to_start_ != NULL) {
145      thread_to_start_->Start();
146    }
147    semaphore_->Signal();
148  }
149
150 private:
151  i::List<i::ThreadId>* refs_;
152  int thread_no_;
153  i::Thread* thread_to_start_;
154  i::Semaphore* semaphore_;
155};
156
157
158TEST(ThreadIdValidation) {
159  const int kNThreads = 100;
160  i::List<ThreadIdValidationThread*> threads(kNThreads);
161  i::List<i::ThreadId> refs(kNThreads);
162  i::Semaphore semaphore(0);
163  ThreadIdValidationThread* prev = NULL;
164  for (int i = kNThreads - 1; i >= 0; i--) {
165    ThreadIdValidationThread* newThread =
166        new ThreadIdValidationThread(prev, &refs, i, &semaphore);
167    threads.Add(newThread);
168    prev = newThread;
169    refs.Add(i::ThreadId::Invalid());
170  }
171  prev->Start();
172  for (int i = 0; i < kNThreads; i++) {
173    semaphore.Wait();
174  }
175  for (int i = 0; i < kNThreads; i++) {
176    delete threads[i];
177  }
178}
179
180
181class ThreadC : public v8::internal::Thread {
182 public:
183  ThreadC() : Thread("ThreadC") { }
184  void Run() {
185    Join();
186  }
187};
188
189
190TEST(ThreadJoinSelf) {
191  ThreadC thread;
192  thread.Start();
193  thread.Join();
194}
195