1 files changed, 74 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testGCChunkPool.cpp b/js/src/jsapi-tests/testGCChunkPool.cpp
new file mode 100644
index 0000000000..12b42330d4
--- /dev/null
+++ b/js/src/jsapi-tests/testGCChunkPool.cpp
@@ -0,0 +1,74 @@
+/* -*- 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 <utility>
+
+#include "gc/GCLock.h"
+#include "gc/GCRuntime.h"
+#include "jsapi-tests/tests.h"
+
+BEGIN_TEST(testGCChunkPool) {
+  using namespace js::gc;
+
+  const int N = 10;
+  ChunkPool pool;
+
+  // Create.
+  for (int i = 0; i < N; ++i) {
+    void* ptr = TenuredChunk::allocate(&cx->runtime()->gc);
+    CHECK(ptr);
+    TenuredChunk* chunk = TenuredChunk::emplace(ptr, &cx->runtime()->gc, true);
+    CHECK(chunk);
+    pool.push(chunk);
+  }
+  MOZ_ASSERT(pool.verify());
+
+  // Iterate.
+  uint32_t i = 0;
+  for (ChunkPool::Iter iter(pool); !iter.done(); iter.next(), ++i) {
+    CHECK(iter.get());
+  }
+  CHECK(i == pool.count());
+  MOZ_ASSERT(pool.verify());
+
+  // Push/Pop.
+  for (int i = 0; i < N; ++i) {
+    TenuredChunk* chunkA = pool.pop();
+    TenuredChunk* chunkB = pool.pop();
+    TenuredChunk* chunkC = pool.pop();
+    pool.push(chunkA);
+    pool.push(chunkB);
+    pool.push(chunkC);
+  }
+  MOZ_ASSERT(pool.verify());
+
+  // Remove.
+  TenuredChunk* chunk = nullptr;
+  int offset = N / 2;
+  for (ChunkPool::Iter iter(pool); !iter.done(); iter.next(), --offset) {
+    if (offset == 0) {
+      chunk = pool.remove(iter.get());
+      break;
+    }
+  }
+  CHECK(chunk);
+  MOZ_ASSERT(!pool.contains(chunk));
+  MOZ_ASSERT(pool.verify());
+  pool.push(chunk);
+
+  // Destruct.
+  js::AutoLockGC lock(cx->runtime());
+  for (ChunkPool::Iter iter(pool); !iter.done();) {
+    TenuredChunk* chunk = iter.get();
+    iter.next();
+    pool.remove(chunk);
+    UnmapPages(chunk, ChunkSize);
+  }
+
+  return true;
+}
+END_TEST(testGCChunkPool)