aboutsummaryrefslogtreecommitdiffstats
path: root/library/cpp/deprecated/mapped_file/mapped_file.cpp
diff options
context:
space:
mode:
authorqrort <qrort@yandex-team.com>2022-11-30 23:47:12 +0300
committerqrort <qrort@yandex-team.com>2022-11-30 23:47:12 +0300
commit22f8ae0e3f5d68b92aecccdf96c1d841a0334311 (patch)
treebffa27765faf54126ad44bcafa89fadecb7a73d7 /library/cpp/deprecated/mapped_file/mapped_file.cpp
parent332b99e2173f0425444abb759eebcb2fafaa9209 (diff)
downloadydb-22f8ae0e3f5d68b92aecccdf96c1d841a0334311.tar.gz
validate canons without yatest_common
Diffstat (limited to 'library/cpp/deprecated/mapped_file/mapped_file.cpp')
-rw-r--r--library/cpp/deprecated/mapped_file/mapped_file.cpp64
1 files changed, 64 insertions, 0 deletions
diff --git a/library/cpp/deprecated/mapped_file/mapped_file.cpp b/library/cpp/deprecated/mapped_file/mapped_file.cpp
new file mode 100644
index 0000000000..b0e4511299
--- /dev/null
+++ b/library/cpp/deprecated/mapped_file/mapped_file.cpp
@@ -0,0 +1,64 @@
+#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();
+}