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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/NonnullRefPtrVector.h>
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#include <Kernel/Process.h>
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#include <Kernel/VM/AnonymousVMObject.h>
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#include <Kernel/VM/InodeVMObject.h>
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#include <Kernel/VM/MemoryManager.h>
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namespace Kernel {
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KResultOr<int> Process::sys$purge(int mode)
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{
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REQUIRE_NO_PROMISES;
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if (!is_superuser())
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return EPERM;
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int purged_page_count = 0;
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if (mode & PURGE_ALL_VOLATILE) {
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NonnullRefPtrVector<AnonymousVMObject> vmobjects;
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{
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InterruptDisabler disabler;
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MM.for_each_vmobject([&](auto& vmobject) {
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if (vmobject.is_anonymous())
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vmobjects.append(vmobject);
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return IterationDecision::Continue;
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});
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}
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for (auto& vmobject : vmobjects) {
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purged_page_count += vmobject.purge();
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}
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}
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if (mode & PURGE_ALL_CLEAN_INODE) {
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NonnullRefPtrVector<InodeVMObject> vmobjects;
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{
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InterruptDisabler disabler;
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MM.for_each_vmobject([&](auto& vmobject) {
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if (vmobject.is_inode())
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vmobjects.append(static_cast<InodeVMObject&>(vmobject));
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return IterationDecision::Continue;
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});
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}
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for (auto& vmobject : vmobjects) {
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purged_page_count += vmobject.release_all_clean_pages();
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}
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}
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return purged_page_count;
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}
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}
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