diff options
Diffstat (limited to 'qpid/cpp/src/qpid/linearstore/jrnl/wrfc.cpp')
| -rw-r--r-- | qpid/cpp/src/qpid/linearstore/jrnl/wrfc.cpp | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/qpid/cpp/src/qpid/linearstore/jrnl/wrfc.cpp b/qpid/cpp/src/qpid/linearstore/jrnl/wrfc.cpp deleted file mode 100644 index 43461b66a3..0000000000 --- a/qpid/cpp/src/qpid/linearstore/jrnl/wrfc.cpp +++ /dev/null @@ -1,162 +0,0 @@ -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * - */ - -/** - * \file wrfc.cpp - * - * Qpid asynchronous store plugin library - * - * File containing code for class mrg::journal::wrfc (rotating - * file controller). See comments in file wrfc.h for details. - * - * \author Kim van der Riet - */ - -#include "qpid/legacystore/jrnl/wrfc.h" - -#include <cmath> -#include "qpid/legacystore/jrnl/jerrno.h" -#include "qpid/legacystore/jrnl/jexception.h" - -namespace mrg -{ -namespace journal -{ - -wrfc::wrfc(const lpmgr* lpmp): - rfc(lpmp), - _fsize_sblks(0), - _fsize_dblks(0), - _enq_cap_offs_dblks(0), - _rid(0), - _reset_ok(false), - _owi(false), - _frot(true) -{} - -wrfc::~wrfc() -{} - -void -wrfc::initialize(const u_int32_t fsize_sblks, rcvdat* rdp) -{ - if (rdp) - { - _fc_index = rdp->_lfid; - _curr_fc = _lpmp->get_fcntlp(_fc_index); - _curr_fc->wr_reset(rdp); - _rid = rdp->_h_rid + 1; - _reset_ok = true; - _owi = rdp->_owi; - _frot = rdp->_frot; - if (rdp->_lffull) - rotate(); - } - else - { - rfc::initialize(); - rfc::set_findex(0); - _rid = 0ULL; - _reset_ok = false; - } - _fsize_sblks = fsize_sblks; - _fsize_dblks = fsize_sblks * JRNL_SBLK_SIZE; - _enq_cap_offs_dblks = (u_int32_t)std::ceil(_fsize_dblks * _lpmp->num_jfiles() * (100.0 - JRNL_ENQ_THRESHOLD) / 100); - // Check the offset is at least one file; if not, make it so - if (_enq_cap_offs_dblks < _fsize_dblks) - _enq_cap_offs_dblks = _fsize_dblks; -} - -iores wrfc::rotate() -{ - if (!_lpmp->num_jfiles()) - throw jexception(jerrno::JERR__NINIT, "wrfc", "rotate"); - _fc_index++; - if (_fc_index == _lpmp->num_jfiles()) - { - _fc_index = 0; - _owi = !_owi; - _frot = false; - } - _curr_fc = _lpmp->get_fcntlp(_fc_index); - if (_curr_fc->aio_cnt()) - return RHM_IORES_FILE_AIOWAIT; - if (!wr_reset()) //Checks if file is still in use (ie not fully dequeued yet) - return RHM_IORES_FULL; - return RHM_IORES_SUCCESS; -} - -u_int16_t wrfc::earliest_index() const -{ - if (_frot) - return 0; - u_int16_t next_index = _fc_index + 1; - if (next_index >= _lpmp->num_jfiles()) - next_index = 0; - return next_index; -} - -bool -wrfc::enq_threshold(const u_int32_t enq_dsize_dblks) const -{ - u_int32_t subm_dblks = subm_cnt_dblks(); // includes file hdr if > 0 - // This compensates for new files which don't have their file headers written yet, - // as file header space cannot be included in this calculation. - if (subm_dblks != 0) - subm_dblks -= 4; - u_int32_t fwd_dblks = subm_dblks + enq_dsize_dblks + _enq_cap_offs_dblks; - u_int16_t findex = _fc_index; - fcntl* fcp = _curr_fc; - bool in_use = false; - while (fwd_dblks && !(findex != _fc_index && fcp->enqcnt())) - { - fwd_dblks -= fwd_dblks > _fsize_dblks ? _fsize_dblks : fwd_dblks; - if (fwd_dblks) - { - if (++findex == _lpmp->num_jfiles()) - findex = 0; - fcp = _lpmp->get_fcntlp(findex); - } - in_use |= fcp->enqcnt() > 0; - } - // Return true if threshold exceeded - return findex != _fc_index && in_use; -} - -bool wrfc::wr_reset() -{ - _reset_ok = _curr_fc->reset(); // returns false if full (ie file still contains enqueued recs) - return _reset_ok; -} - -// TODO: update this to reflect all status data -std::string -wrfc::status_str() const -{ - std::ostringstream oss; - oss << "wrfc: " << rfc::status_str(); - if (is_active()) - oss << " fcntl[" << _fc_index << "]: " << _curr_fc->status_str(); - return oss.str(); -} - -} // namespace journal -} // namespace mrg |