CPU Class Reference

#include <cpu.h>

Inheritance diagram for CPU:

Collaboration diagram for CPU:

Public Member Functions
	CPU (unsigned cores=1)
void	synch () const
void	synchAll () const
void	updateMemoryInfo ()
void	lockMemory (const void *h_mem, size_t bytes) override
void	unlockMemory (const void *h_mem) override
bool	isMemoryLocked (const void *h_mem) override
Public Member Functions inherited from HW
	HW (unsigned parallelUnits)
virtual	~HW ()
unsigned	noOfParallUnits () const
virtual void	set ()
virtual size_t	lastFreeBytes () const
virtual size_t	totalBytes () const
virtual size_t	lastUsedBytes () const
virtual std::string	getUUID () const

Static Public Member Functions
static unsigned	findCores ()

Protected Member Functions
void	obtainUUID ()

Additional Inherited Members
Protected Attributes inherited from HW
unsigned	m_parallUnits
size_t	m_totalBytes
size_t	m_lastFreeBytes
std::string	m_uuid

Detailed Description

Definition at line 37 of file cpu.h.

Constructor & Destructor Documentation

CPU()

CPU::CPU ( unsigned  cores = 1 )

inline

Definition at line 39 of file cpu.h.

: HW(cores) {}

Member Function Documentation

findCores()

static unsigned CPU::findCores ( )

inlinestatic

Definition at line 41 of file cpu.h.

                                {
        return std::max(std::thread::hardware_concurrency(), 1u);
    }

isMemoryLocked()

bool CPU::isMemoryLocked ( const void *  h_mem )

inlineoverridevirtual

Implements HW.

Definition at line 58 of file cpu.h.

                                                    {
        // FIXME DS implement
        return false;
    }

lockMemory()

void CPU::lockMemory ( const void *  h_mem, size_t  bytes  )

inlineoverridevirtual

Implements HW.

Definition at line 50 of file cpu.h.

                                                              {
        // FIXME DS implement
    }

obtainUUID()

void CPU::obtainUUID ( )

protectedvirtual

Implements HW.

Definition at line 49 of file cpu.cpp.

                     {
    // https://stackoverflow.com/a/6491964/5484355
    unsigned eax = 0;
    unsigned ebx = 0;
    unsigned ecx = 0;
    unsigned edx = 0;

    std::stringstream ss;

    eax = 1; /* processor info and feature bits */
    native_cpuid(&eax, &ebx, &ecx, &edx);

    ss << (eax & 0xF); ss << " "; // stepping
    ss << ((eax >> 4) & 0xF); ss << " "; // model
    ss << ((eax >> 8) & 0xF); ss << " "; // family
    ss << ((eax >> 12) & 0x3); ss << " "; // processor type
    ss << ((eax >> 16) & 0xF); ss << " "; // extended model
    ss << ((eax >> 20) & 0xFF); ss << " "; // extended family

    m_uuid = ss.str();
}

synch()

void CPU::synch ( ) const

inlinevirtual

Implements HW.

Definition at line 45 of file cpu.h.

{}; // nothing to do

synchAll()

void CPU::synchAll ( ) const

inlinevirtual

Implements HW.

Definition at line 46 of file cpu.h.

{}; // nothing to do

unlockMemory()

void CPU::unlockMemory ( const void *  h_mem )

inlineoverridevirtual

Implements HW.

Definition at line 54 of file cpu.h.

                                                  {
        // FIXME DS implement
    }

updateMemoryInfo()

void CPU::updateMemoryInfo ( )

virtual

Implements HW.

Definition at line 41 of file cpu.cpp.

                           {
    size_t pages = sysconf(_SC_PHYS_PAGES);
    size_t page_size = sysconf(_SC_PAGE_SIZE);
    size_t total = pages * page_size;
    m_totalBytes = total;
    m_lastFreeBytes = total; // assume we own all memory
}

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The documentation for this class was generated from the following files:

• xmipp/libraries/data/cpu.h
• xmipp/libraries/data/cpu.cpp