139 lines
3.1 KiB
C++
139 lines
3.1 KiB
C++
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/*
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* SharedData.cpp
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*
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* Created on: 6 <EFBFBD><EFBFBD><EFBFBD>. 2021 <EFBFBD>.
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* Author: titov
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*/
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#include "SharedData.hh"
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std::pair<char *, std::size_t> systemic::SharedData::get() const {
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return data;
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}
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void systemic::SharedData::lock() {
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while( not try_lock() );
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}
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bool systemic::SharedData::try_lock() {
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return peripheral::write_lock(data.first, data.second);
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}
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void systemic::SharedData::unlock() {
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peripheral::write_unlock(data.first, data.second);
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}
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void systemic::SharedData::lock_shared() {
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while( not try_lock_shared() );
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}
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bool systemic::SharedData::try_lock_shared() {
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return peripheral::read_lock(data.first, data.second);
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}
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void systemic::SharedData::unlock_shared() {
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peripheral::read_unlock(data.first, data.second);
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}
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systemic::SharedData::SharedData( std::pair<peripheral::protected_char *, std::size_t> data ) :
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data(data) {}
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systemic::SharedData::SharedData( peripheral::protected_char * buff, std::size_t size ) :
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data( buff, size ) {}
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systemic::SharedData::SharedData( const SharedData & right ) : data(right.data) {}
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systemic::SharedData::~SharedData() {}
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systemic::SharedData & systemic::SharedData::operator=( SharedData right ) {
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data = right.data;
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return *this;
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}
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systemic::SharedData systemic::SharedData::part( peripheral::protected_char * buff, std::size_t size ) {
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if( buff >= data.first and ( buff + size ) < ( data.first + data.second) )
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return systemic::SharedData( buff, size );
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return systemic::SharedData( nullptr, 0 );
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}
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systemic::SharedData::SharedData() :
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data( nullptr, 0) {}
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std::pair<const peripheral::protected_char *, std::size_t> systemic::ProtectedDataView::get() const {
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return data;
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}
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void systemic::ProtectedDataView::lock_shared() {
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while( not try_lock_shared() );
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}
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bool systemic::ProtectedDataView::try_lock_shared() {
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return peripheral::read_lock( const_cast<peripheral::protected_char * >( data.first ), data.second );
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}
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void systemic::ProtectedDataView::unlock_shared() {
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peripheral::read_unlock( const_cast<peripheral::protected_char * >( data.first ), data.second );
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}
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systemic::ProtectedDataView::ProtectedDataView() :
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data( nullptr, 0 ) {}
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systemic::ProtectedDataView::ProtectedDataView(
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std::pair<const peripheral::protected_char *, std::size_t> data) :
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data(data) {}
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systemic::ProtectedDataView::ProtectedDataView(
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const peripheral::protected_char * buff, std::size_t size) :
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data( buff, size ) {}
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systemic::ProtectedDataView::ProtectedDataView( const ProtectedDataView & right ) : data(right.data) {}
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systemic::ProtectedDataView & systemic::ProtectedDataView::operator=( ProtectedDataView right ) {
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data = right.data;
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return *this;
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}
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systemic::ProtectedDataView::~ProtectedDataView() {}
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systemic::ProtectedDataView systemic::ProtectedDataView::part(
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const peripheral::protected_char * buff, std::size_t size) {
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if( buff >= data.first and ( buff + size ) < ( data.first + data.second) )
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return systemic::ProtectedDataView( buff, size );
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return systemic::ProtectedDataView( nullptr, 0 );
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}
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