1 files changed, 107 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testThreadingThread.cpp b/js/src/jsapi-tests/testThreadingThread.cpp
new file mode 100644
index 0000000000..68a7a388b0
--- /dev/null
+++ b/js/src/jsapi-tests/testThreadingThread.cpp
@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Atomics.h"
+#include "mozilla/IntegerRange.h"
+#include "mozilla/Vector.h"
+
+#include <utility>
+
+#include "js/AllocPolicy.h"
+#include "jsapi-tests/tests.h"
+#include "threading/Thread.h"
+
+BEGIN_TEST(testThreadingThreadJoin) {
+  bool flag = false;
+  js::Thread thread;
+  CHECK(thread.init([](bool* flagp) { *flagp = true; }, &flag));
+  CHECK(thread.joinable());
+  thread.join();
+  CHECK(flag);
+  CHECK(!thread.joinable());
+  return true;
+}
+END_TEST(testThreadingThreadJoin)
+
+BEGIN_TEST(testThreadingThreadDetach) {
+  // We are going to detach this thread. Unlike join, we can't have it pointing
+  // at the stack because it might do the write after we have returned and
+  // pushed a new frame.
+  bool* flag = js_new<bool>(false);
+  js::Thread thread;
+  CHECK(thread.init(
+      [](bool* flag) {
+        *flag = true;
+        js_delete(flag);
+      },
+      std::move(flag)));
+  CHECK(thread.joinable());
+  thread.detach();
+  CHECK(!thread.joinable());
+
+  return true;
+}
+END_TEST(testThreadingThreadDetach)
+
+BEGIN_TEST(testThreadingThreadSetName) {
+  js::Thread thread;
+  CHECK(thread.init([]() { js::ThisThread::SetName("JSAPI Test Thread"); }));
+  thread.detach();
+  return true;
+}
+END_TEST(testThreadingThreadSetName)
+
+BEGIN_TEST(testThreadingThreadId) {
+  CHECK(js::ThreadId() == js::ThreadId());
+  js::ThreadId fromOther;
+  js::Thread thread;
+  CHECK(thread.init(
+      [](js::ThreadId* idp) { *idp = js::ThreadId::ThisThreadId(); },
+      &fromOther));
+  js::ThreadId fromMain = thread.get_id();
+  thread.join();
+  CHECK(fromOther == fromMain);
+  return true;
+}
+END_TEST(testThreadingThreadId)
+
+BEGIN_TEST(testThreadingThreadVectorMoveConstruct) {
+  const static size_t N = 10;
+  mozilla::Atomic<int> count(0);
+  mozilla::Vector<js::Thread, 0, js::SystemAllocPolicy> v;
+  for (auto i : mozilla::IntegerRange(N)) {
+    CHECK(v.emplaceBack());
+    CHECK(v.back().init([](mozilla::Atomic<int>* countp) { (*countp)++; },
+                        &count));
+    CHECK(v.length() == i + 1);
+  }
+  for (auto& th : v) {
+    th.join();
+  }
+  CHECK(count == 10);
+  return true;
+}
+END_TEST(testThreadingThreadVectorMoveConstruct)
+
+// This test is checking that args are using "decay" copy, per spec. If we do
+// not use decay copy properly, the rvalue reference |bool&& b| in the
+// constructor will automatically become an lvalue reference |bool& b| in the
+// trampoline, causing us to read through the reference when passing |bool bb|
+// from the trampoline. If the parent runs before the child, the bool may have
+// already become false, causing the trampoline to read the changed value, thus
+// causing the child's assertion to fail.
+BEGIN_TEST(testThreadingThreadArgCopy) {
+  for (size_t i = 0; i < 10000; ++i) {
+    bool b = true;
+    js::Thread thread;
+    CHECK(thread.init([](bool bb) { MOZ_RELEASE_ASSERT(bb); }, b));
+    b = false;
+    thread.join();
+  }
+  return true;
+}
+END_TEST(testThreadingThreadArgCopy)