From 9e6d35490a6542f9c97607f93c2ef8ca8e03cbcc Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Wed, 6 Jan 2016 20:12:03 +0000
Subject: Vendor import of lldb trunk r256945:
 https://llvm.org/svn/llvm-project/lldb/trunk@256945

---
 unittests/Utility/TaskPoolTest.cpp | 62 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 unittests/Utility/TaskPoolTest.cpp

(limited to 'unittests/Utility/TaskPoolTest.cpp')

diff --git a/unittests/Utility/TaskPoolTest.cpp b/unittests/Utility/TaskPoolTest.cpp
new file mode 100644
index 000000000000..24431e2c7896
--- /dev/null
+++ b/unittests/Utility/TaskPoolTest.cpp
@@ -0,0 +1,62 @@
+#include "gtest/gtest.h"
+
+#include "lldb/Utility/TaskPool.h"
+
+TEST (TaskPoolTest, AddTask)
+{
+    auto fn = [](int x) { return x * x + 1; };
+
+    auto f1 = TaskPool::AddTask(fn, 1);
+    auto f2 = TaskPool::AddTask(fn, 2);
+    auto f3 = TaskPool::AddTask(fn, 3);
+    auto f4 = TaskPool::AddTask(fn, 4);
+
+    ASSERT_EQ (10, f3.get());
+    ASSERT_EQ ( 2, f1.get());
+    ASSERT_EQ (17, f4.get());
+    ASSERT_EQ ( 5, f2.get());
+}
+
+TEST (TaskPoolTest, RunTasks)
+{
+    std::vector<int> r(4);
+
+    auto fn = [](int x, int& y) { y = x * x + 1; };
+    
+    TaskPool::RunTasks(
+        [fn, &r]() { fn(1, r[0]); },
+        [fn, &r]() { fn(2, r[1]); },
+        [fn, &r]() { fn(3, r[2]); },
+        [fn, &r]() { fn(4, r[3]); }
+    );
+
+    ASSERT_EQ ( 2, r[0]);
+    ASSERT_EQ ( 5, r[1]);
+    ASSERT_EQ (10, r[2]);
+    ASSERT_EQ (17, r[3]);
+}
+
+TEST (TaskPoolTest, TaskRunner)
+{
+    auto fn = [](int x) { return std::make_pair(x, x * x); };
+
+    TaskRunner<std::pair<int, int>> tr;
+    tr.AddTask(fn, 1);
+    tr.AddTask(fn, 2);
+    tr.AddTask(fn, 3);
+    tr.AddTask(fn, 4);
+
+    int count = 0;
+    while (true)
+    {
+        auto f = tr.WaitForNextCompletedTask();
+        if (!f.valid())
+            break;
+
+        ++count;
+        std::pair<int, int> v = f.get();
+        ASSERT_EQ (v.first * v.first, v.second);
+    }
+
+    ASSERT_EQ(4, count);
+}
-- 
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