mirror of
https://github.com/pytorch/pytorch.git
synced 2025-10-20 21:14:14 +08:00
7cfd23636c
Fixes #ISSUE_NUMBER Pull Request resolved: https://github.com/pytorch/pytorch/pull/134935 Approved by: https://github.com/ezyang
38 lines
962 B
C++
38 lines
962 B
C++
#include "caffe2/serialize/istream_adapter.h"
|
|
#include <c10/util/Exception.h>
|
|
|
|
namespace caffe2::serialize {
|
|
|
|
IStreamAdapter::IStreamAdapter(std::istream* istream) : istream_(istream) {}
|
|
|
|
size_t IStreamAdapter::size() const {
|
|
auto prev_pos = istream_->tellg();
|
|
validate("getting the current position");
|
|
istream_->seekg(0, istream_->end);
|
|
validate("seeking to end");
|
|
auto result = istream_->tellg();
|
|
validate("getting size");
|
|
istream_->seekg(prev_pos);
|
|
validate("seeking to the original position");
|
|
return result;
|
|
}
|
|
|
|
size_t IStreamAdapter::read(uint64_t pos, void* buf, size_t n, const char* what)
|
|
const {
|
|
istream_->seekg(pos);
|
|
validate(what);
|
|
istream_->read(static_cast<char*>(buf), n);
|
|
validate(what);
|
|
return n;
|
|
}
|
|
|
|
void IStreamAdapter::validate(const char* what) const {
|
|
if (!*istream_) {
|
|
AT_ERROR("istream reader failed: ", what, ".");
|
|
}
|
|
}
|
|
|
|
IStreamAdapter::~IStreamAdapter() = default;
|
|
|
|
} // namespace caffe2::serialize
|