54d8721374
The library is expected to be a unified place for all components to read both global and per-process memory accounting form kernel including getting the working set. This change adds the PageInfo, MemInfo and ProcMemInfo classes and verifies the implementation against libpagemap for correctness. Adds a procmem2 tool show the usage. TODO: Plumbing in os_debug, add vmastats, zoneinfo etc parsing. Test: libmeminfo_test 1 Test: procmem2 1 Test: procmem2 -h -W 1 Test: procmem2 -h -w 1 Test: libmeminfo_benchmark Bug: 111694435 Bug: 114325007 Change-Id: I280440b1dc26a498170686d10fcf63f953a0dcbd Signed-off-by: Sandeep Patil <sspatil@google.com>
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <sys/types.h>
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#include <unistd.h>
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#include <string>
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#include <vector>
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namespace android {
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namespace meminfo {
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struct MemUsage {
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uint64_t vss;
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uint64_t rss;
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uint64_t pss;
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uint64_t uss;
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uint64_t private_clean;
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uint64_t private_dirty;
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uint64_t shared_clean;
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uint64_t shared_dirty;
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MemUsage()
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: vss(0),
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rss(0),
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pss(0),
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uss(0),
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private_clean(0),
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private_dirty(0),
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shared_clean(0),
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shared_dirty(0) {}
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~MemUsage() = default;
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void clear() {
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vss = rss = pss = uss = 0;
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private_clean = private_dirty = shared_clean = shared_dirty = 0;
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}
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};
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struct Vma {
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uint64_t start;
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uint64_t end;
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uint64_t offset;
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uint16_t flags;
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std::string name;
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Vma(uint64_t s, uint64_t e, uint64_t off, uint16_t f, const char* n)
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: start(s), end(e), offset(off), flags(f), name(n) {}
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~Vma() = default;
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// Memory usage of this mapping.
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MemUsage usage;
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// Working set within this mapping.
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MemUsage wss;
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};
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} // namespace meminfo
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} // namespace android
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