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#pragma once
#include <util/generic/flags.h>
#include <util/generic/ptr.h>
#include <util/generic/string.h>
#include <util/generic/utility.h>
#include <util/generic/yexception.h>
#include <util/system/align.h>
#include <util/system/file.h>
#include <util/system/filemap.h>
#include <util/system/yassert.h>
#include <cstdio>
#include <new>
/// Deprecated (by pg@), use TFileMap or TMemoryMap instead
class TMappedFile {
private:
TFileMap* Map_;
private:
TMappedFile(TFileMap* map, const char* dbgName);
public:
TMappedFile() {
Map_ = nullptr;
}
~TMappedFile() {
term();
}
explicit TMappedFile(const TString& name) {
Map_ = nullptr;
init(name, TFileMap::oRdOnly);
}
TMappedFile(const TFile& file, TFileMap::EOpenMode om = TFileMap::oRdOnly, const char* dbgName = "unknown");
void init(const TString& name);
void init(const TString& name, TFileMap::EOpenMode om);
void init(const TString& name, size_t length, TFileMap::EOpenMode om);
void init(const TFile&, TFileMap::EOpenMode om = TFileMap::oRdOnly, const char* dbgName = "unknown");
void flush();
void term() {
if (Map_) {
Map_->Unmap();
delete Map_;
Map_ = nullptr;
}
}
size_t getSize() const {
return (Map_ ? Map_->MappedSize() : 0);
}
void* getData(size_t pos = 0) const {
Y_ASSERT(!Map_ || (pos <= getSize()));
return (Map_ ? (void*)((unsigned char*)Map_->Ptr() + pos) : nullptr);
}
void precharge(size_t pos = 0, size_t size = (size_t)-1) const;
void swap(TMappedFile& file) noexcept {
DoSwap(Map_, file.Map_);
}
};
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