Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 101108025a14ad07924c2fff0bdea725abc0103d
https://github.com/WebKit/WebKit/commit/101108025a14ad07924c2fff0bdea725abc0103d
Author: Michael Saboff <msab...@apple.com>
Date: 2024-11-11 (Mon, 11 Nov 2024)
Changed paths:
M Source/bmalloc/bmalloc/TZoneHeapManager.cpp
M Source/bmalloc/bmalloc/TZoneHeapManager.h
Log Message:
-----------
[TZone] Add API to allow processes to set their own bucket count policy
https://bugs.webkit.org/show_bug.cgi?id=282697
rdar://problem/139367739
Reviewed by Yijia Huang.
Added a new TZoneHeapManager function, initWithBucketSettings(), for setting
bucket counts different than the default.
After changing the bucket parameters, initWithBucketSettings will then
initialize the TZone manager.
Note that initWithBucketSettings must be called before the first TZone
allocation, typically early in the main()
function of a process.
Also changed the default bucket counts to 5 buckets for small types, 3 buckets
for large types, but left the
maximum size of small types at 128 bytes. The changing of these defaults is
based on performance and memory use
testing.
* Source/bmalloc/bmalloc/TZoneHeapManager.cpp:
(bmalloc::api::TZoneHeapManager::setBucketParams):
(bmalloc::api::TZoneHeapManager::init):
(bmalloc::api::TZoneHeapManager::ensureSingleton):
* Source/bmalloc/bmalloc/TZoneHeapManager.h:
(bmalloc::api::TZoneHeapManager::singleton):
(bmalloc::api::TZoneHeapManager::initWithBucketSettings):
Canonical link: https://commits.webkit.org/286433@main
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