Move thread local stuff from base to base/threading and consistently use the

base namespace. This also fixes references to TLSSlot to
base::ThreadLocalStorage::Slot.

TEST=it compiles
BUG=none
Review URL: http://codereview.chromium.org/5986012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70322 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 100 insertions, 0 deletions

diff --git a/base/threading/thread_local_storage_unittest.cc b/base/threading/thread_local_storage_unittest.cc
new file mode 100644
index 0000000..216e650
--- /dev/null
+++ b/base/threading/thread_local_storage_unittest.cc
@@ -0,0 +1,100 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#if defined(OS_WIN)
+#include <windows.h>
+#include <process.h>
+#endif
+
+#include "base/threading/simple_thread.h"
+#include "base/threading/thread_local_storage.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#if defined(OS_WIN)
+// Ignore warnings about ptr->int conversions that we use when
+// storing ints into ThreadLocalStorage.
+#pragma warning(disable : 4311 4312)
+#endif
+
+namespace base {
+
+namespace {
+
+const int kInitialTlsValue = 0x5555;
+static ThreadLocalStorage::Slot tls_slot(LINKER_INITIALIZED);
+
+class ThreadLocalStorageRunner : public DelegateSimpleThread::Delegate {
+ public:
+  explicit ThreadLocalStorageRunner(int* tls_value_ptr)
+      : tls_value_ptr_(tls_value_ptr) {}
+
+  virtual ~ThreadLocalStorageRunner() {}
+
+  virtual void Run() {
+    *tls_value_ptr_ = kInitialTlsValue;
+    tls_slot.Set(tls_value_ptr_);
+
+    int *ptr = static_cast<int*>(tls_slot.Get());
+    EXPECT_EQ(ptr, tls_value_ptr_);
+    EXPECT_EQ(*ptr, kInitialTlsValue);
+    *tls_value_ptr_ = 0;
+
+    ptr = static_cast<int*>(tls_slot.Get());
+    EXPECT_EQ(ptr, tls_value_ptr_);
+    EXPECT_EQ(*ptr, 0);
+  }
+
+ private:
+  int* tls_value_ptr_;
+  DISALLOW_COPY_AND_ASSIGN(ThreadLocalStorageRunner);
+};
+
+
+void ThreadLocalStorageCleanup(void *value) {
+  int *ptr = reinterpret_cast<int*>(value);
+  if (ptr)
+    *ptr = kInitialTlsValue;
+}
+
+}  // namespace
+
+TEST(ThreadLocalStorageTest, Basics) {
+  ThreadLocalStorage::Slot slot;
+  slot.Set(reinterpret_cast<void*>(123));
+  int value = reinterpret_cast<intptr_t>(slot.Get());
+  EXPECT_EQ(value, 123);
+}
+
+TEST(ThreadLocalStorageTest, TLSDestructors) {
+  // Create a TLS index with a destructor.  Create a set of
+  // threads that set the TLS, while the destructor cleans it up.
+  // After the threads finish, verify that the value is cleaned up.
+  const int kNumThreads = 5;
+  int values[kNumThreads];
+  ThreadLocalStorageRunner* thread_delegates[kNumThreads];
+  DelegateSimpleThread* threads[kNumThreads];
+
+  tls_slot.Initialize(ThreadLocalStorageCleanup);
+
+  // Spawn the threads.
+  for (int index = 0; index < kNumThreads; index++) {
+    values[index] = kInitialTlsValue;
+    thread_delegates[index] = new ThreadLocalStorageRunner(&values[index]);
+    threads[index] = new DelegateSimpleThread(thread_delegates[index],
+                                              "tls thread");
+    threads[index]->Start();
+  }
+
+  // Wait for the threads to finish.
+  for (int index = 0; index < kNumThreads; index++) {
+    threads[index]->Join();
+    delete threads[index];
+    delete thread_delegates[index];
+
+    // Verify that the destructor was called and that we reset.
+    EXPECT_EQ(values[index], kInitialTlsValue);
+  }
+}
+
+}  // namespace base