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#include "mapped_file.h"
#include <util/generic/yexception.h>
#include <util/system/defaults.h>
#include <util/system/hi_lo.h>
#include <util/system/filemap.h>
TMappedFile::TMappedFile(TFileMap* map, const char* dbgName) {
Map_ = map;
i64 len = Map_->Length();
if (Hi32(len) != 0 && sizeof(size_t) <= sizeof(ui32))
ythrow yexception() << "File '" << dbgName << "' mapping error: " << len << " too large";
Map_->Map(0, static_cast<size_t>(len));
}
TMappedFile::TMappedFile(const TFile& file, TFileMap::EOpenMode om, const char* dbgName)
: Map_(nullptr)
{
init(file, om, dbgName);
}
void TMappedFile::precharge(size_t off, size_t size) const {
if (!Map_)
return;
Map_->Precharge(off, size);
}
void TMappedFile::init(const TString& name) {
THolder<TFileMap> map(new TFileMap(name));
TMappedFile newFile(map.Get(), name.data());
Y_UNUSED(map.Release());
newFile.swap(*this);
newFile.term();
}
void TMappedFile::init(const TString& name, size_t length, TFileMap::EOpenMode om) {
THolder<TFileMap> map(new TFileMap(name, length, om));
TMappedFile newFile(map.Get(), name.data());
Y_UNUSED(map.Release());
newFile.swap(*this);
newFile.term();
}
void TMappedFile::init(const TFile& file, TFileMap::EOpenMode om, const char* dbgName) {
THolder<TFileMap> map(new TFileMap(file, om));
TMappedFile newFile(map.Get(), dbgName);
Y_UNUSED(map.Release());
newFile.swap(*this);
newFile.term();
}
void TMappedFile::init(const TString& name, TFileMap::EOpenMode om) {
THolder<TFileMap> map(new TFileMap(name, om));
TMappedFile newFile(map.Get(), name.data());
Y_UNUSED(map.Release());
newFile.swap(*this);
newFile.term();
}
void TMappedFile::flush() {
Map_->Flush();
}
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