testSABAccounting.cpp

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#include "builtin/TestingFunctions.h"

#include "js/SharedArrayBuffer.h"

#include "jsapi-tests/tests.h"

BEGIN_TEST(testSABAccounting) {

  // Purge what we can

  JS::PrepareForFullGC(cx);

  NonIncrementalGC(cx, JS::GCOptions::Shrink, JS::GCReason::API);

  // Self-hosting and chrome code should not use SABs, or the point of this

  // predicate is completely lost.

  CHECK(!JS::ContainsSharedArrayBuffer(cx));

  JS::RootedObject obj(cx), obj2(cx);

  CHECK(obj = JS::NewSharedArrayBuffer(cx, 4096));

  CHECK(JS::ContainsSharedArrayBuffer(cx));

  CHECK(obj2 = JS::NewSharedArrayBuffer(cx, 4096));

  CHECK(JS::ContainsSharedArrayBuffer(cx));

  // Discard those objects again.

  obj = nullptr;

  obj2 = nullptr;

  JS::PrepareForFullGC(cx);

  NonIncrementalGC(cx, JS::GCOptions::Shrink, JS::GCReason::API);

  // Should be back to base state.

  CHECK(!JS::ContainsSharedArrayBuffer(cx));

  return true;

END_TEST(testSABAccounting)