121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
*/
|
|
/* 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 "gc/Barrier.h"
|
|
#include "jsapi-tests/tests.h"
|
|
|
|
using namespace JS;
|
|
using namespace js;
|
|
|
|
struct AutoIgnoreRootingHazards {
|
|
// Force a nontrivial destructor so the compiler sees the whole RAII scope
|
|
static volatile int depth;
|
|
AutoIgnoreRootingHazards() { depth++; }
|
|
~AutoIgnoreRootingHazards() { depth--; }
|
|
} JS_HAZ_GC_SUPPRESSED;
|
|
volatile int AutoIgnoreRootingHazards::depth = 0;
|
|
|
|
BEGIN_TEST(testGCStoreBufferRemoval)
|
|
{
|
|
// Sanity check - objects start in the nursery and then become tenured.
|
|
JS_GC(cx);
|
|
JS::RootedObject obj(cx, NurseryObject());
|
|
CHECK(js::gc::IsInsideNursery(obj.get()));
|
|
JS_GC(cx);
|
|
CHECK(!js::gc::IsInsideNursery(obj.get()));
|
|
JS::RootedObject tenuredObject(cx, obj);
|
|
|
|
// Hide the horrors herein from the static rooting analysis.
|
|
AutoIgnoreRootingHazards ignore;
|
|
|
|
// Test removal of store buffer entries added by HeapPtr<T>.
|
|
{
|
|
JSObject* badObject = reinterpret_cast<JSObject*>(1);
|
|
JSObject* punnedPtr = nullptr;
|
|
HeapPtr<JSObject*>* relocPtr =
|
|
reinterpret_cast<HeapPtr<JSObject*>*>(&punnedPtr);
|
|
new (relocPtr) HeapPtr<JSObject*>;
|
|
*relocPtr = NurseryObject();
|
|
relocPtr->~HeapPtr<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
|
|
new (relocPtr) HeapPtr<JSObject*>;
|
|
*relocPtr = NurseryObject();
|
|
*relocPtr = tenuredObject;
|
|
relocPtr->~HeapPtr<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
|
|
new (relocPtr) HeapPtr<JSObject*>;
|
|
*relocPtr = NurseryObject();
|
|
*relocPtr = nullptr;
|
|
relocPtr->~HeapPtr<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
}
|
|
|
|
// Test removal of store buffer entries added by HeapPtr<Value>.
|
|
{
|
|
Value punnedValue;
|
|
HeapPtr<Value>* relocValue = reinterpret_cast<HeapPtr<Value>*>(&punnedValue);
|
|
new (relocValue) HeapPtr<Value>;
|
|
*relocValue = ObjectValue(*NurseryObject());
|
|
relocValue->~HeapPtr<Value>();
|
|
punnedValue = ObjectValueCrashOnTouch();
|
|
JS_GC(cx);
|
|
|
|
new (relocValue) HeapPtr<Value>;
|
|
*relocValue = ObjectValue(*NurseryObject());
|
|
*relocValue = ObjectValue(*tenuredObject);
|
|
relocValue->~HeapPtr<Value>();
|
|
punnedValue = ObjectValueCrashOnTouch();
|
|
JS_GC(cx);
|
|
|
|
new (relocValue) HeapPtr<Value>;
|
|
*relocValue = ObjectValue(*NurseryObject());
|
|
*relocValue = NullValue();
|
|
relocValue->~HeapPtr<Value>();
|
|
punnedValue = ObjectValueCrashOnTouch();
|
|
JS_GC(cx);
|
|
}
|
|
|
|
// Test removal of store buffer entries added by Heap<T>.
|
|
{
|
|
JSObject* badObject = reinterpret_cast<JSObject*>(1);
|
|
JSObject* punnedPtr = nullptr;
|
|
Heap<JSObject*>* heapPtr =
|
|
reinterpret_cast<Heap<JSObject*>*>(&punnedPtr);
|
|
new (heapPtr) Heap<JSObject*>;
|
|
*heapPtr = NurseryObject();
|
|
heapPtr->~Heap<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
|
|
new (heapPtr) Heap<JSObject*>;
|
|
*heapPtr = NurseryObject();
|
|
*heapPtr = tenuredObject;
|
|
heapPtr->~Heap<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
|
|
new (heapPtr) Heap<JSObject*>;
|
|
*heapPtr = NurseryObject();
|
|
*heapPtr = nullptr;
|
|
heapPtr->~Heap<JSObject*>();
|
|
punnedPtr = badObject;
|
|
JS_GC(cx);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
JSObject* NurseryObject()
|
|
{
|
|
return JS_NewPlainObject(cx);
|
|
}
|
|
END_TEST(testGCStoreBufferRemoval)
|