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Solaris/OpenBSD/FreeBSD: [heap] Uncommit unused large object page memory.

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Port d61a5c376b

Original commit message:

    As a first step I uncommit the memory on the main thread. Also
    to measure impact and stability of that optimization. In a
    follow-up CL, the uncommitting should be moved on the concurrent thread.

R=jochen@chromium.org, hpayer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2245703002
Cr-Commit-Position: refs/heads/master@{#38654}
This commit is contained in:
mic.besace 2016-08-16 05:00:38 -07:00 committed by Commit bot
parent f6875cee3a
commit 38de91a5da
4 changed files with 14 additions and 1 deletions
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3
AUTHORS
View File

@ -89,6 +89,7 @@ Matthew Sporleder <msporleder@gmail.com>
Maxim Mossienko <maxim.mossienko@gmail.com>
Michael Lutz <michi@icosahedron.de>
Michael Smith <mike@w3.org>
Michaël Zasso <mic.besace@gmail.com>
Mike Gilbert <floppymaster@gmail.com>
Mike Pennisi <mike@mikepennisi.com>
Milton Chiang <milton.chiang@mediatek.com>
@ -118,4 +119,4 @@ Vladimir Shutoff <vovan@shutoff.ru>
Yu Yin <xwafish@gmail.com>
Zac Hansen <xaxxon@gmail.com>
Zhongping Wang <kewpie.w.zp@gmail.com>
柳荣一 <admin@web-tinker.com>
柳荣一 <admin@web-tinker.com>

4
src/base/platform/platform-freebsd.cc
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@ -246,6 +246,10 @@ bool VirtualMemory::UncommitRegion(void* base, size_t size) {
kMmapFdOffset) != MAP_FAILED;
}
bool VirtualMemory::ReleasePartialRegion(void* base, size_t size,
void* free_start, size_t free_size) {
return munmap(free_start, free_size) == 0;
}
bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
return munmap(base, size) == 0;

4
src/base/platform/platform-openbsd.cc
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@ -277,6 +277,10 @@ bool VirtualMemory::UncommitRegion(void* base, size_t size) {
kMmapFdOffset) != MAP_FAILED;
}
bool VirtualMemory::ReleasePartialRegion(void* base, size_t size,
void* free_start, size_t free_size) {
return munmap(free_start, free_size) == 0;
}
bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
return munmap(base, size) == 0;

4
src/base/platform/platform-solaris.cc
View File

@ -198,6 +198,10 @@ bool VirtualMemory::UncommitRegion(void* base, size_t size) {
kMmapFdOffset) != MAP_FAILED;
}
bool VirtualMemory::ReleasePartialRegion(void* base, size_t size,
void* free_start, size_t free_size) {
return munmap(free_start, free_size) == 0;
}
bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
return munmap(base, size) == 0;