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/* 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 "jsapi-tests/tests.h"
static const unsigned BufferSize = 20;
static unsigned FinalizeCalls = 0;
static JSFinalizeStatus StatusBuffer[BufferSize];
static bool IsZoneGCBuffer[BufferSize];
BEGIN_TEST(testGCFinalizeCallback)
{
JS_SetGCParameter(cx, JSGC_MODE, JSGC_MODE_INCREMENTAL);
/* Full GC, non-incremental. */
FinalizeCalls = 0;
JS_GC(cx);
CHECK(cx->gc.isFullGc());
CHECK(checkSingleGroup());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(false));
/* Full GC, incremental. */
FinalizeCalls = 0;
JS::PrepareForFullGC(cx);
JS::StartIncrementalGC(cx, GC_NORMAL, JS::gcreason::API, 1000000);
while (cx->gc.isIncrementalGCInProgress()) {
JS::PrepareForFullGC(cx);
JS::IncrementalGCSlice(cx, JS::gcreason::API, 1000000);
}
CHECK(!cx->gc.isIncrementalGCInProgress());
CHECK(cx->gc.isFullGc());
CHECK(checkMultipleGroups());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(false));
JS::RootedObject global1(cx, createTestGlobal());
JS::RootedObject global2(cx, createTestGlobal());
JS::RootedObject global3(cx, createTestGlobal());
CHECK(global1);
CHECK(global2);
CHECK(global3);
/* Zone GC, non-incremental, single zone. */
FinalizeCalls = 0;
JS::PrepareZoneForGC(global1->zone());
JS::GCForReason(cx, GC_NORMAL, JS::gcreason::API);
CHECK(!cx->gc.isFullGc());
CHECK(checkSingleGroup());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(true));
/* Zone GC, non-incremental, multiple zones. */
FinalizeCalls = 0;
JS::PrepareZoneForGC(global1->zone());
JS::PrepareZoneForGC(global2->zone());
JS::PrepareZoneForGC(global3->zone());
JS::GCForReason(cx, GC_NORMAL, JS::gcreason::API);
CHECK(!cx->gc.isFullGc());
CHECK(checkSingleGroup());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(true));
/* Zone GC, incremental, single zone. */
FinalizeCalls = 0;
JS::PrepareZoneForGC(global1->zone());
JS::StartIncrementalGC(cx, GC_NORMAL, JS::gcreason::API, 1000000);
while (cx->gc.isIncrementalGCInProgress()) {
JS::PrepareZoneForGC(global1->zone());
JS::IncrementalGCSlice(cx, JS::gcreason::API, 1000000);
}
CHECK(!cx->gc.isIncrementalGCInProgress());
CHECK(!cx->gc.isFullGc());
CHECK(checkSingleGroup());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(true));
/* Zone GC, incremental, multiple zones. */
FinalizeCalls = 0;
JS::PrepareZoneForGC(global1->zone());
JS::PrepareZoneForGC(global2->zone());
JS::PrepareZoneForGC(global3->zone());
JS::StartIncrementalGC(cx, GC_NORMAL, JS::gcreason::API, 1000000);
while (cx->gc.isIncrementalGCInProgress()) {
JS::PrepareZoneForGC(global1->zone());
JS::PrepareZoneForGC(global2->zone());
JS::PrepareZoneForGC(global3->zone());
JS::IncrementalGCSlice(cx, JS::gcreason::API, 1000000);
}
CHECK(!cx->gc.isIncrementalGCInProgress());
CHECK(!cx->gc.isFullGc());
CHECK(checkMultipleGroups());
CHECK(checkFinalizeStatus());
CHECK(checkFinalizeIsZoneGC(true));
/*
* Make some use of the globals here to ensure the compiler doesn't optimize
* them away in release builds, causing the zones to be collected and
* the test to fail.
*/
CHECK(JS_IsGlobalObject(global1));
CHECK(JS_IsGlobalObject(global2));
CHECK(JS_IsGlobalObject(global3));
return true;
}
JSObject* createTestGlobal()
{
JS::CompartmentOptions options;
return JS_NewGlobalObject(cx, getGlobalClass(), nullptr, JS::FireOnNewGlobalHook, options);
}
virtual bool init() override
{
if (!JSAPITest::init())
return false;
JS_AddFinalizeCallback(cx, FinalizeCallback, nullptr);
return true;
}
virtual void uninit() override
{
JS_RemoveFinalizeCallback(cx, FinalizeCallback);
JSAPITest::uninit();
}
bool checkSingleGroup()
{
CHECK(FinalizeCalls < BufferSize);
CHECK(FinalizeCalls == 3);
return true;
}
bool checkMultipleGroups()
{
CHECK(FinalizeCalls < BufferSize);
CHECK(FinalizeCalls % 2 == 1);
CHECK((FinalizeCalls - 1) / 2 > 1);
return true;
}
bool checkFinalizeStatus()
{
/*
* The finalize callback should be called twice for each zone group
* finalized, with status JSFINALIZE_GROUP_START and JSFINALIZE_GROUP_END,
* and then once more with JSFINALIZE_COLLECTION_END.
*/
for (unsigned i = 0; i < FinalizeCalls - 1; i += 2) {
CHECK(StatusBuffer[i] == JSFINALIZE_GROUP_START);
CHECK(StatusBuffer[i + 1] == JSFINALIZE_GROUP_END);
}
CHECK(StatusBuffer[FinalizeCalls - 1] == JSFINALIZE_COLLECTION_END);
return true;
}
bool checkFinalizeIsZoneGC(bool isZoneGC)
{
for (unsigned i = 0; i < FinalizeCalls; ++i)
CHECK(IsZoneGCBuffer[i] == isZoneGC);
return true;
}
static void
FinalizeCallback(JSFreeOp* fop, JSFinalizeStatus status, bool isZoneGC, void* data)
{
if (FinalizeCalls < BufferSize) {
StatusBuffer[FinalizeCalls] = status;
IsZoneGCBuffer[FinalizeCalls] = isZoneGC;
}
++FinalizeCalls;
}
END_TEST(testGCFinalizeCallback)
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