1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/gc/Iteration.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,137 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "jscompartment.h"
1.11 +#include "jsgc.h"
1.12 +
1.13 +#include "gc/GCInternals.h"
1.14 +#include "js/HashTable.h"
1.15 +#include "vm/Runtime.h"
1.16 +
1.17 +#include "jscntxtinlines.h"
1.18 +#include "jsgcinlines.h"
1.19 +
1.20 +using namespace js;
1.21 +using namespace js::gc;
1.22 +
1.23 +void
1.24 +js::TraceRuntime(JSTracer *trc)
1.25 +{
1.26 + JS_ASSERT(!IS_GC_MARKING_TRACER(trc));
1.27 +
1.28 + MinorGC(trc->runtime(), JS::gcreason::EVICT_NURSERY);
1.29 + AutoPrepareForTracing prep(trc->runtime(), WithAtoms);
1.30 + MarkRuntime(trc);
1.31 +}
1.32 +
1.33 +static void
1.34 +IterateCompartmentsArenasCells(JSRuntime *rt, Zone *zone, void *data,
1.35 + JSIterateCompartmentCallback compartmentCallback,
1.36 + IterateArenaCallback arenaCallback,
1.37 + IterateCellCallback cellCallback)
1.38 +{
1.39 + for (CompartmentsInZoneIter comp(zone); !comp.done(); comp.next())
1.40 + (*compartmentCallback)(rt, data, comp);
1.41 +
1.42 + for (size_t thingKind = 0; thingKind != FINALIZE_LIMIT; thingKind++) {
1.43 + JSGCTraceKind traceKind = MapAllocToTraceKind(AllocKind(thingKind));
1.44 + size_t thingSize = Arena::thingSize(AllocKind(thingKind));
1.45 +
1.46 + for (ArenaIter aiter(zone, AllocKind(thingKind)); !aiter.done(); aiter.next()) {
1.47 + ArenaHeader *aheader = aiter.get();
1.48 + (*arenaCallback)(rt, data, aheader->getArena(), traceKind, thingSize);
1.49 + for (CellIterUnderGC iter(aheader); !iter.done(); iter.next())
1.50 + (*cellCallback)(rt, data, iter.getCell(), traceKind, thingSize);
1.51 + }
1.52 + }
1.53 +}
1.54 +
1.55 +void
1.56 +js::IterateZonesCompartmentsArenasCells(JSRuntime *rt, void *data,
1.57 + IterateZoneCallback zoneCallback,
1.58 + JSIterateCompartmentCallback compartmentCallback,
1.59 + IterateArenaCallback arenaCallback,
1.60 + IterateCellCallback cellCallback)
1.61 +{
1.62 + AutoPrepareForTracing prop(rt, WithAtoms);
1.63 +
1.64 + for (ZonesIter zone(rt, WithAtoms); !zone.done(); zone.next()) {
1.65 + (*zoneCallback)(rt, data, zone);
1.66 + IterateCompartmentsArenasCells(rt, zone, data,
1.67 + compartmentCallback, arenaCallback, cellCallback);
1.68 + }
1.69 +}
1.70 +
1.71 +void
1.72 +js::IterateZoneCompartmentsArenasCells(JSRuntime *rt, Zone *zone, void *data,
1.73 + IterateZoneCallback zoneCallback,
1.74 + JSIterateCompartmentCallback compartmentCallback,
1.75 + IterateArenaCallback arenaCallback,
1.76 + IterateCellCallback cellCallback)
1.77 +{
1.78 + AutoPrepareForTracing prop(rt, WithAtoms);
1.79 +
1.80 + (*zoneCallback)(rt, data, zone);
1.81 + IterateCompartmentsArenasCells(rt, zone, data,
1.82 + compartmentCallback, arenaCallback, cellCallback);
1.83 +}
1.84 +
1.85 +void
1.86 +js::IterateChunks(JSRuntime *rt, void *data, IterateChunkCallback chunkCallback)
1.87 +{
1.88 + AutoPrepareForTracing prep(rt, SkipAtoms);
1.89 +
1.90 + for (js::GCChunkSet::Range r = rt->gcChunkSet.all(); !r.empty(); r.popFront())
1.91 + chunkCallback(rt, data, r.front());
1.92 +}
1.93 +
1.94 +void
1.95 +js::IterateScripts(JSRuntime *rt, JSCompartment *compartment,
1.96 + void *data, IterateScriptCallback scriptCallback)
1.97 +{
1.98 + MinorGC(rt, JS::gcreason::EVICT_NURSERY);
1.99 + AutoPrepareForTracing prep(rt, SkipAtoms);
1.100 +
1.101 + if (compartment) {
1.102 + for (CellIterUnderGC i(compartment->zone(), gc::FINALIZE_SCRIPT); !i.done(); i.next()) {
1.103 + JSScript *script = i.get<JSScript>();
1.104 + if (script->compartment() == compartment)
1.105 + scriptCallback(rt, data, script);
1.106 + }
1.107 + } else {
1.108 + for (ZonesIter zone(rt, SkipAtoms); !zone.done(); zone.next()) {
1.109 + for (CellIterUnderGC i(zone, gc::FINALIZE_SCRIPT); !i.done(); i.next())
1.110 + scriptCallback(rt, data, i.get<JSScript>());
1.111 + }
1.112 + }
1.113 +}
1.114 +
1.115 +void
1.116 +js::IterateGrayObjects(Zone *zone, GCThingCallback cellCallback, void *data)
1.117 +{
1.118 + MinorGC(zone->runtimeFromMainThread(), JS::gcreason::EVICT_NURSERY);
1.119 + AutoPrepareForTracing prep(zone->runtimeFromMainThread(), SkipAtoms);
1.120 +
1.121 + for (size_t finalizeKind = 0; finalizeKind <= FINALIZE_OBJECT_LAST; finalizeKind++) {
1.122 + for (CellIterUnderGC i(zone, AllocKind(finalizeKind)); !i.done(); i.next()) {
1.123 + JSObject *obj = i.get<JSObject>();
1.124 + if (obj->isMarked(GRAY))
1.125 + cellCallback(data, obj);
1.126 + }
1.127 + }
1.128 +}
1.129 +
1.130 +JS_PUBLIC_API(void)
1.131 +JS_IterateCompartments(JSRuntime *rt, void *data,
1.132 + JSIterateCompartmentCallback compartmentCallback)
1.133 +{
1.134 + JS_ASSERT(!rt->isHeapBusy());
1.135 +
1.136 + AutoTraceSession session(rt);
1.137 +
1.138 + for (CompartmentsIter c(rt, WithAtoms); !c.done(); c.next())
1.139 + (*compartmentCallback)(rt, data, c);
1.140 +}
