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3ef8be4fa4
Jemalloc 4 purges dirty pages regularly during free() when the ratio of dirty pages compared to active pages is higher than 1 << lg_dirty_mult. We set lg_dirty_mult in jemalloc_config to limit RSS usage, but it also has an impact on performance. So instead of enforcing a high ratio to force more pages being purged, we keep jemalloc's default ratio of 8, and force a regular purge of all dirty pages, after cycle collection. Keeping jemalloc's default ratio avoids cycle-collection-triggered purge to have to go through really all dirty pages when there are a lot, in which case the normal jemalloc purge during free() will already have kicked in. It also takes care of everything that doesn't run the cycle collector still having a level of purge, like plugins in the plugin-container. At the same time, since jemalloc_purge_freed_pages does nothing with jemalloc 4, repurpose the MEMORY_FREE_PURGED_PAGES_MS telemetry probe to track the time spent in this cycle-collector-triggered purge.
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsCycleCollector_h__
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#define nsCycleCollector_h__
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class nsICycleCollectorListener;
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class nsICycleCollectorLogSink;
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class nsISupports;
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template<class T> struct already_AddRefed;
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#include "nsError.h"
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#include "nsID.h"
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#include "js/SliceBudget.h"
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namespace mozilla {
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class CycleCollectedJSRuntime;
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} // namespace mozilla
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bool nsCycleCollector_init();
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void nsCycleCollector_startup();
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typedef void (*CC_BeforeUnlinkCallback)(void);
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void nsCycleCollector_setBeforeUnlinkCallback(CC_BeforeUnlinkCallback aCB);
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typedef void (*CC_ForgetSkippableCallback)(void);
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void nsCycleCollector_setForgetSkippableCallback(CC_ForgetSkippableCallback aCB);
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void nsCycleCollector_forgetSkippable(bool aRemoveChildlessNodes = false,
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bool aAsyncSnowWhiteFreeing = false);
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void nsCycleCollector_prepareForGarbageCollection();
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// If an incremental cycle collection is in progress, finish it.
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void nsCycleCollector_finishAnyCurrentCollection();
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void nsCycleCollector_dispatchDeferredDeletion(bool aContinuation = false,
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bool aPurge = false);
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bool nsCycleCollector_doDeferredDeletion();
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already_AddRefed<nsICycleCollectorLogSink> nsCycleCollector_createLogSink();
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void nsCycleCollector_collect(nsICycleCollectorListener* aManualListener);
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void nsCycleCollector_collectSlice(js::SliceBudget& budget,
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bool aPreferShorterSlices = false);
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uint32_t nsCycleCollector_suspectedCount();
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void nsCycleCollector_shutdown();
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// Helpers for interacting with JS
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void nsCycleCollector_registerJSRuntime(mozilla::CycleCollectedJSRuntime* aRt);
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void nsCycleCollector_forgetJSRuntime();
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#define NS_CYCLE_COLLECTOR_LOGGER_CID \
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{ 0x58be81b4, 0x39d2, 0x437c, \
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{ 0x94, 0xea, 0xae, 0xde, 0x2c, 0x62, 0x08, 0xd3 } }
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extern nsresult
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nsCycleCollectorLoggerConstructor(nsISupports* aOuter,
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const nsIID& aIID,
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void** aInstancePtr);
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#endif // nsCycleCollector_h__
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