/usr/include/oce/OSD_MemInfo.hxx is in liboce-foundation-dev 0.17.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | // Created on: 2011-10-05
// Created by: Kirill GAVRILOV
// Copyright (c) 2013-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _OSD_MemInfo_H__
#define _OSD_MemInfo_H__
#include <TCollection_AsciiString.hxx>
//! This class provide information about memory utilized by current process.
//! This information includes:
//! - Private Memory - synthetic value that tries to filter out the memory
//! usage only by the process itself (allocated for data
//! and stack), excluding dynamic libraries.
//! These pages may be in RAM or in SWAP.
//! - Virtual Memory - amount of reserved and committed memory in the
//! user-mode portion of the virtual address space.
//! Notice that this counter includes reserved memory
//! (not yet in used) and shared between processes memory (libraries).
//! - Working Set - set of memory pages in the virtual address space of the process
//! that are currently resident in physical memory (RAM).
//! These pages are available for an application to use
//! without triggering a page fault.
//! - Pagefile Usage - space allocated for the pagefile, in bytes.
//! Those pages may or may not be in memory (RAM)
//! thus this counter couldn't be used to estimate
//! how many active pages doesn't present in RAM.
//!
//! Notice that none of these counters can be used as absolute measure of
//! application memory consumption!
//!
//! User should analyze all values in specific case to make correct decision
//! about memory (over)usage. This is also prefferred to use specialized
//! tools to detect memory leaks.
//!
//! This also means that these values should not be used for intellectual
//! memory management by application itself.
class OSD_MemInfo
{
public:
enum Counter
{
MemPrivate = 0, //!< Virtual memory allocated for data and stack excluding libraries
MemVirtual, //!< Reserved and committed memory of the virtual address space
MemWorkingSet, //!< Memory pages that are currently resident in physical memory
MemWorkingSetPeak, //!< Peak working set size
MemSwapUsage, //!< Space allocated for the pagefile
MemSwapUsagePeak, //!< Peak space allocated for the pagefile
MemHeapUsage, //!< Total space allocated from the heap
MemCounter_NB //!< Indicates total counters number
};
public:
//! Create and initialize
Standard_EXPORT OSD_MemInfo();
//! Update counters
Standard_EXPORT void Update();
//! Return the string representation for all available counter.
Standard_EXPORT TCollection_AsciiString ToString() const;
//! Return value or specified counter in bytes.
//! Notice that NOT all counters are available on various systems.
//! Standard_Size(-1) means invalid (unavailable) value.
Standard_EXPORT Standard_Size Value (const OSD_MemInfo::Counter theCounter) const;
//! Return value or specified counter in MiB.
//! Notice that NOT all counters are available on various systems.
//! Standard_Size(-1) means invalid (unavailable) value.
Standard_EXPORT Standard_Size ValueMiB (const OSD_MemInfo::Counter theCounter) const;
public:
//! Return the string representation for all available counter.
Standard_EXPORT static TCollection_AsciiString PrintInfo();
private:
Standard_Size myCounters[MemCounter_NB]; //!< Counters' values, in bytes
};
#endif // _OSD_MemInfo_H__
|