MemoryBlock Class Reference

Memory block operations class. More...

#include <MemoryBlock.h>

Static Public Member Functions
static void *	set (void *dest, int ch, unsigned count)
	Fill memory with a constant byte.
static Size	copy (void *dest, const void *src, Size count)
	Copy memory from one place to another.
static Size	copy (char *dest, char *src, Size count)
	Copy a character string.
static bool	compare (const void *p1, const void *p2, const Size count)
	Compare memory.
static bool	compare (const char *p1, const char *p2, const Size count=0)
	Compare memory.

Detailed Description

Memory block operations class.

Todo:

Add architecture specific implementations for extra speed. The alternative implementations should be placed in libarch without creating a new dependency in libstd, for example using weak symbols.

Definition at line 38 of file MemoryBlock.h.

Member Function Documentation

compare() [1/2]

bool MemoryBlock::compare ( const char *  p1, const char *  p2, const Size  count = 0  )

static

Compare memory.

Parameters

p1	Memory pointer one.
p2	Memory pointer two.
count	Number of bytes to compare or zero to continue until a ZERO byte.

Returns

True if equal, false otherwise.

Definition at line 93 of file MemoryBlock.cpp.

References ZERO.

compare() [2/2]

bool MemoryBlock::compare ( const void *  p1, const void *  p2, const Size  count  )

static

Compare memory.

Parameters

p1	Memory pointer one.
p2	Memory pointer two.
count	Number of bytes to compare

Returns

True if equal, false otherwise

Definition at line 77 of file MemoryBlock.cpp.

Referenced by MpiTarget::initialize(), MpiTarget::initializeMaster(), and DhcpClient::receiveBootResponse().

copy() [1/2]

Size MemoryBlock::copy ( char *  dest, char *  src, Size  count  )

static

Copy a character string.

Parameters

dest	Destination string.
src	Source string.
count	Number of bytes to copy.

Returns

Number of bytes copied

Definition at line 52 of file MemoryBlock.cpp.

copy() [2/2]

Size MemoryBlock::copy ( void *  dest, const void *  src, Size  count  )

static

Copy memory from one place to another.

Parameters

dest	Destination address.
src	Source address.
count	Number of bytes to copy.

Returns

Number of bytes copied.

Definition at line 41 of file MemoryBlock.cpp.

References sp.

Referenced by ARMException::ARMException(), IOBuffer::bufferedWrite(), ProcessShares::createShare(), Lz4Decompressor::decompress(), ARMProcess::execute(), ARM64Process::execute(), FileSystemRequest::FileSystemRequest(), FileSystemClient::findMount(), Ethernet::getAddress(), Loopback::getAddress(), Ethernet::getTransmitPacket(), DhcpClient::initialize(), Directory::insert(), RaspberryKernel::interrupt(), SunxiKernel::interrupt(), kernel_main(), Mount::listMounts(), Kernel::loadBootProgram(), ARP::lookupAddress(), FileSystemServer::mountHandler(), multibootToCoreInfo(), String::operator<<(), String::operator=(), String::operator=(), UDPSocket::process(), ICMP::process(), MpiProxy::processExec(), PseudoFile::PseudoFile(), BootImageStorage::read(), LinnDirectory::read(), Lz4Decompressor::read(), IOBuffer::read(), read16(), read32(), read64(), read8(), readBe16(), readBe32(), readBe64(), readLe16(), readLe32(), readLe64(), ProcessShares::readShare(), MpiHost::receivePacket(), DatastoreClient::registerBuffer(), FileSystemClient::request(), FileSystemClient::request(), String::resize(), RecoveryServer::rewriteProgram(), MpiHost::send(), DhcpClient::sendBootRequest(), ICMP::sendPacket(), ARP::sendReply(), ARP::sendRequest(), ChannelClient::sendRequest(), Ethernet::setAddress(), Loopback::setAddress(), ARMProcess::setCpuState(), ARM64Process::setCpuState(), ICMPSocket::setReply(), Process::sleep(), spawn(), MpiHost::startProcesses(), String::String(), String::String(), String::String(), SystemInfoHandler(), ARMKernel::trap(), ARM64Kernel::trap(), String::trim(), TestChar< T >::unique(), ARP::updateCacheEntry(), VMCopyHandler(), IOBuffer::write(), PseudoFile::write(), IPV4Address::write(), UDPSocket::write(), VGA::write(), write16(), write32(), write64(), write8(), writeBe16(), writeBe32(), writeBe64(), writeLe16(), writeLe32(), and writeLe64().

set()

void * MemoryBlock::set ( void *  dest, int  ch, unsigned  count  )

static

Fill memory with a constant byte.

Parameters

dest	Memory to write to.
ch	Constant byte.
count	Number of bytes to fill.

Returns

Pointer to dest.

Definition at line 30 of file MemoryBlock.cpp.

Referenced by Allocator::Allocator(), ARM64Map::ARM64Map(), ARMMap::ARMMap(), ARPSocket::ARPSocket(), BitArray::clear(), clearBSS(), CoreServer::clearPages(), CoreServer::CoreServer(), MpiProxy::createChannels(), ProcessShares::createShare(), DhcpClient::DhcpClient(), Ethernet::Ethernet(), NetSend::exec(), ICMPSocket::ICMPSocket(), Process::initialize(), ARMPaging::initialize(), ARM64Paging::initialize(), IntelPaging::initialize(), Kernel::initializeHeap(), MpiTarget::initializeMaster(), ARP::insertCacheEntry(), IntelKernel::IntelKernel(), IntelMap::IntelMap(), kernel_main(), Kernel::loadBootProgram(), BootSymbolStorage::loadSegment(), BootSymbolStorage::loadSymbol(), ARP::lookupAddress(), ARMFirstTable::map(), ARM64FirstTable::map(), IntelPageDirectory::map(), FileSystemServer::mount(), MpiProxy::MpiProxy(), MpiTarget::MpiTarget(), multibootToCoreInfo(), NetworkSocket::NetworkSocket(), String::pad(), PoolAllocator::PoolAllocator(), CoreServer::prepareCoreInfo(), Process::Process(), MpiProxy::processExec(), MpiProxy::processTerminate(), ARMProcess::reset(), ARM64Process::reset(), IntelProcess::reset(), MemoryChannel::reset(), RecoveryServer::rewriteProgram(), DhcpClient::sendBootRequest(), ARP::sendRequest(), setupMappings(), spawn(), TestChar< T >::unique(), CoreServer::unloadKernel(), Process::wakeup(), and PseudoFile::write().

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

• lib/libstd/MemoryBlock.h
• lib/libstd/MemoryBlock.cpp