| /* |
| * |
| * 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 wmgr.cpp |
| * |
| * Qpid asynchronous store plugin library |
| * |
| * File containing code for class mrg::journal::wmgr (write manager). See |
| * comments in file wmgr.h for details. |
| * |
| * \author Kim van der Riet |
| */ |
| |
| #include "qpid/legacystore/jrnl/wmgr.h" |
| |
| #include <cassert> |
| #include <cerrno> |
| #include <cstdlib> |
| #include <cstring> |
| #include "qpid/legacystore/jrnl/file_hdr.h" |
| #include "qpid/legacystore/jrnl/jcntl.h" |
| #include "qpid/legacystore/jrnl/jerrno.h" |
| #include <sstream> |
| |
| namespace mrg |
| { |
| namespace journal |
| { |
| |
| wmgr::wmgr(jcntl* jc, enq_map& emap, txn_map& tmap, wrfc& wrfc): |
| pmgr(jc, emap, tmap), |
| _wrfc(wrfc), |
| _max_dtokpp(0), |
| _max_io_wait_us(0), |
| _fhdr_base_ptr(0), |
| _fhdr_ptr_arr(0), |
| _fhdr_aio_cb_arr(0), |
| _cached_offset_dblks(0), |
| _jfsize_dblks(0), |
| _jfsize_pgs(0), |
| _num_jfiles(0), |
| _enq_busy(false), |
| _deq_busy(false), |
| _abort_busy(false), |
| _commit_busy(false), |
| _txn_pending_set() |
| {} |
| |
| wmgr::wmgr(jcntl* jc, enq_map& emap, txn_map& tmap, wrfc& wrfc, |
| const u_int32_t max_dtokpp, const u_int32_t max_iowait_us): |
| pmgr(jc, emap, tmap /* , dtoklp */), |
| _wrfc(wrfc), |
| _max_dtokpp(max_dtokpp), |
| _max_io_wait_us(max_iowait_us), |
| _fhdr_base_ptr(0), |
| _fhdr_ptr_arr(0), |
| _fhdr_aio_cb_arr(0), |
| _cached_offset_dblks(0), |
| _jfsize_dblks(0), |
| _jfsize_pgs(0), |
| _num_jfiles(0), |
| _enq_busy(false), |
| _deq_busy(false), |
| _abort_busy(false), |
| _commit_busy(false), |
| _txn_pending_set() |
| {} |
| |
| wmgr::~wmgr() |
| { |
| wmgr::clean(); |
| } |
| |
| void |
| wmgr::initialize(aio_callback* const cbp, const u_int32_t wcache_pgsize_sblks, |
| const u_int16_t wcache_num_pages, const u_int32_t max_dtokpp, const u_int32_t max_iowait_us, |
| std::size_t eo) |
| { |
| _enq_busy = false; |
| _deq_busy = false; |
| _abort_busy = false; |
| _commit_busy = false; |
| _max_dtokpp = max_dtokpp; |
| _max_io_wait_us = max_iowait_us; |
| |
| initialize(cbp, wcache_pgsize_sblks, wcache_num_pages); |
| |
| _jfsize_dblks = _jc->jfsize_sblks() * JRNL_SBLK_SIZE; |
| _jfsize_pgs = _jc->jfsize_sblks() / _cache_pgsize_sblks; |
| assert(_jc->jfsize_sblks() % JRNL_RMGR_PAGE_SIZE == 0); |
| |
| if (eo) |
| { |
| const u_int32_t wr_pg_size_dblks = _cache_pgsize_sblks * JRNL_SBLK_SIZE; |
| u_int32_t data_dblks = (eo / JRNL_DBLK_SIZE) - 4; // 4 dblks for file hdr |
| _pg_cntr = data_dblks / wr_pg_size_dblks; |
| _pg_offset_dblks = data_dblks - (_pg_cntr * wr_pg_size_dblks); |
| } |
| } |
| |
| iores |
| wmgr::enqueue(const void* const data_buff, const std::size_t tot_data_len, |
| const std::size_t this_data_len, data_tok* dtokp, const void* const xid_ptr, |
| const std::size_t xid_len, const bool transient, const bool external) |
| { |
| if (xid_len) |
| assert(xid_ptr != 0); |
| |
| if (_deq_busy || _abort_busy || _commit_busy) |
| return RHM_IORES_BUSY; |
| |
| if (this_data_len != tot_data_len && !external) |
| return RHM_IORES_NOTIMPL; |
| |
| iores res = pre_write_check(WMGR_ENQUEUE, dtokp, xid_len, tot_data_len, external); |
| if (res != RHM_IORES_SUCCESS) |
| return res; |
| |
| bool cont = false; |
| if (_enq_busy) // If enqueue() exited last time with RHM_IORES_FULL or RHM_IORES_PAGE_AIOWAIT |
| { |
| if (dtokp->wstate() == data_tok::ENQ_PART) |
| cont = true; |
| else |
| { |
| std::ostringstream oss; |
| oss << "This data_tok: id=" << dtokp->id() << " state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_ENQDISCONT, oss.str(), "wmgr", "enqueue"); |
| } |
| } |
| |
| u_int64_t rid = (dtokp->external_rid() | cont) ? dtokp->rid() : _wrfc.get_incr_rid(); |
| _enq_rec.reset(rid, data_buff, tot_data_len, xid_ptr, xid_len, _wrfc.owi(), transient, |
| external); |
| if (!cont) |
| { |
| dtokp->set_rid(rid); |
| dtokp->set_dequeue_rid(0); |
| if (xid_len) |
| dtokp->set_xid(xid_ptr, xid_len); |
| else |
| dtokp->clear_xid(); |
| _enq_busy = true; |
| } |
| bool done = false; |
| while (!done) |
| { |
| assert(_pg_offset_dblks < _cache_pgsize_sblks * JRNL_SBLK_SIZE); |
| void* wptr = (void*)((char*)_page_ptr_arr[_pg_index] + _pg_offset_dblks * JRNL_DBLK_SIZE); |
| u_int32_t data_offs_dblks = dtokp->dblocks_written(); |
| u_int32_t ret = _enq_rec.encode(wptr, data_offs_dblks, |
| (_cache_pgsize_sblks * JRNL_SBLK_SIZE) - _pg_offset_dblks); |
| |
| // Remember fid which contains the record header in case record is split over several files |
| if (data_offs_dblks == 0) |
| dtokp->set_fid(_wrfc.index()); |
| _pg_offset_dblks += ret; |
| _cached_offset_dblks += ret; |
| dtokp->incr_dblocks_written(ret); |
| dtokp->incr_pg_cnt(); |
| _page_cb_arr[_pg_index]._pdtokl->push_back(dtokp); |
| |
| // Is the encoding of this record complete? |
| if (dtokp->dblocks_written() >= _enq_rec.rec_size_dblks()) |
| { |
| // TODO: Incorrect - must set state to ENQ_CACHED; ENQ_SUBM is set when AIO returns. |
| dtokp->set_wstate(data_tok::ENQ_SUBM); |
| dtokp->set_dsize(tot_data_len); |
| // Only add this data token to page token list when submit is complete, this way |
| // long multi-page messages have their token on the page containing the END of the |
| // message. AIO callbacks will then only process this token when entire message is |
| // enqueued. |
| _wrfc.incr_enqcnt(dtokp->fid()); |
| |
| if (xid_len) // If part of transaction, add to transaction map |
| { |
| std::string xid((const char*)xid_ptr, xid_len); |
| _tmap.insert_txn_data(xid, txn_data(rid, 0, dtokp->fid(), true)); |
| } |
| else |
| { |
| if (_emap.insert_pfid(rid, dtokp->fid()) < enq_map::EMAP_OK) // fail |
| { |
| // The only error code emap::insert_pfid() returns is enq_map::EMAP_DUP_RID. |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << rid << " _pfid=0x" << dtokp->fid(); |
| throw jexception(jerrno::JERR_MAP_DUPLICATE, oss.str(), "wmgr", "enqueue"); |
| } |
| } |
| |
| done = true; |
| } |
| else |
| dtokp->set_wstate(data_tok::ENQ_PART); |
| |
| file_header_check(rid, cont, _enq_rec.rec_size_dblks() - data_offs_dblks); |
| flush_check(res, cont, done); |
| } |
| if (dtokp->wstate() >= data_tok::ENQ_SUBM) |
| _enq_busy = false; |
| return res; |
| } |
| |
| iores |
| wmgr::dequeue(data_tok* dtokp, const void* const xid_ptr, const std::size_t xid_len, const bool txn_coml_commit) |
| { |
| if (xid_len) |
| assert(xid_ptr != 0); |
| |
| if (_enq_busy || _abort_busy || _commit_busy) |
| return RHM_IORES_BUSY; |
| |
| iores res = pre_write_check(WMGR_DEQUEUE, dtokp); |
| if (res != RHM_IORES_SUCCESS) |
| return res; |
| |
| bool cont = false; |
| if (_deq_busy) // If dequeue() exited last time with RHM_IORES_FULL or RHM_IORES_PAGE_AIOWAIT |
| { |
| if (dtokp->wstate() == data_tok::DEQ_PART) |
| cont = true; |
| else |
| { |
| std::ostringstream oss; |
| oss << "This data_tok: id=" << dtokp->id() << " state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_DEQDISCONT, oss.str(), "wmgr", "dequeue"); |
| } |
| } |
| |
| const bool ext_rid = dtokp->external_rid(); |
| u_int64_t rid = (ext_rid | cont) ? dtokp->rid() : _wrfc.get_incr_rid(); |
| u_int64_t dequeue_rid = (ext_rid | cont) ? dtokp->dequeue_rid() : dtokp->rid(); |
| _deq_rec.reset(rid, dequeue_rid, xid_ptr, xid_len, _wrfc.owi(), txn_coml_commit); |
| if (!cont) |
| { |
| if (!ext_rid) |
| { |
| dtokp->set_rid(rid); |
| dtokp->set_dequeue_rid(dequeue_rid); |
| } |
| if (xid_len) |
| dtokp->set_xid(xid_ptr, xid_len); |
| else |
| dtokp->clear_xid(); |
| dequeue_check(dtokp->xid(), dequeue_rid); |
| dtokp->set_dblocks_written(0); // Reset dblks_written from previous op |
| _deq_busy = true; |
| } |
| bool done = false; |
| while (!done) |
| { |
| assert(_pg_offset_dblks < _cache_pgsize_sblks * JRNL_SBLK_SIZE); |
| void* wptr = (void*)((char*)_page_ptr_arr[_pg_index] + _pg_offset_dblks * JRNL_DBLK_SIZE); |
| u_int32_t data_offs_dblks = dtokp->dblocks_written(); |
| u_int32_t ret = _deq_rec.encode(wptr, data_offs_dblks, |
| (_cache_pgsize_sblks * JRNL_SBLK_SIZE) - _pg_offset_dblks); |
| |
| // Remember fid which contains the record header in case record is split over several files |
| if (data_offs_dblks == 0) |
| dtokp->set_fid(_wrfc.index()); |
| _pg_offset_dblks += ret; |
| _cached_offset_dblks += ret; |
| dtokp->incr_dblocks_written(ret); |
| dtokp->incr_pg_cnt(); |
| _page_cb_arr[_pg_index]._pdtokl->push_back(dtokp); |
| |
| // Is the encoding of this record complete? |
| if (dtokp->dblocks_written() >= _deq_rec.rec_size_dblks()) |
| { |
| // TODO: Incorrect - must set state to ENQ_CACHED; ENQ_SUBM is set when AIO returns. |
| dtokp->set_wstate(data_tok::DEQ_SUBM); |
| |
| if (xid_len) // If part of transaction, add to transaction map |
| { |
| // If the enqueue is part of a pending txn, it will not yet be in emap |
| _emap.lock(dequeue_rid); // ignore rid not found error |
| std::string xid((const char*)xid_ptr, xid_len); |
| _tmap.insert_txn_data(xid, txn_data(rid, dequeue_rid, dtokp->fid(), false)); |
| } |
| else |
| { |
| int16_t fid = _emap.get_remove_pfid(dtokp->dequeue_rid()); |
| if (fid < enq_map::EMAP_OK) // fail |
| { |
| if (fid == enq_map::EMAP_RID_NOT_FOUND) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << rid; |
| throw jexception(jerrno::JERR_MAP_NOTFOUND, oss.str(), "wmgr", "dequeue"); |
| } |
| if (fid == enq_map::EMAP_LOCKED) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << rid; |
| throw jexception(jerrno::JERR_MAP_LOCKED, oss.str(), "wmgr", "dequeue"); |
| } |
| } |
| _wrfc.decr_enqcnt(fid); |
| } |
| |
| done = true; |
| } |
| else |
| dtokp->set_wstate(data_tok::DEQ_PART); |
| |
| file_header_check(rid, cont, _deq_rec.rec_size_dblks() - data_offs_dblks); |
| flush_check(res, cont, done); |
| } |
| if (dtokp->wstate() >= data_tok::DEQ_SUBM) |
| _deq_busy = false; |
| return res; |
| } |
| |
| iores |
| wmgr::abort(data_tok* dtokp, const void* const xid_ptr, const std::size_t xid_len) |
| { |
| // commit and abort MUST have a valid xid |
| assert(xid_ptr != 0 && xid_len > 0); |
| |
| if (_enq_busy || _deq_busy || _commit_busy) |
| return RHM_IORES_BUSY; |
| |
| iores res = pre_write_check(WMGR_ABORT, dtokp); |
| if (res != RHM_IORES_SUCCESS) |
| return res; |
| |
| bool cont = false; |
| if (_abort_busy) // If abort() exited last time with RHM_IORES_FULL or RHM_IORES_PAGE_AIOWAIT |
| { |
| if (dtokp->wstate() == data_tok::ABORT_PART) |
| cont = true; |
| else |
| { |
| std::ostringstream oss; |
| oss << "This data_tok: id=" << dtokp->id() << " state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_DEQDISCONT, oss.str(), "wmgr", "abort"); |
| } |
| } |
| |
| u_int64_t rid = (dtokp->external_rid() | cont) ? dtokp->rid() : _wrfc.get_incr_rid(); |
| _txn_rec.reset(RHM_JDAT_TXA_MAGIC, rid, xid_ptr, xid_len, _wrfc.owi()); |
| if (!cont) |
| { |
| dtokp->set_rid(rid); |
| dtokp->set_dequeue_rid(0); |
| dtokp->set_xid(xid_ptr, xid_len); |
| dtokp->set_dblocks_written(0); // Reset dblks_written from previous op |
| _abort_busy = true; |
| } |
| bool done = false; |
| while (!done) |
| { |
| assert(_pg_offset_dblks < _cache_pgsize_sblks * JRNL_SBLK_SIZE); |
| void* wptr = (void*)((char*)_page_ptr_arr[_pg_index] + _pg_offset_dblks * JRNL_DBLK_SIZE); |
| u_int32_t data_offs_dblks = dtokp->dblocks_written(); |
| u_int32_t ret = _txn_rec.encode(wptr, data_offs_dblks, |
| (_cache_pgsize_sblks * JRNL_SBLK_SIZE) - _pg_offset_dblks); |
| |
| // Remember fid which contains the record header in case record is split over several files |
| if (data_offs_dblks == 0) |
| dtokp->set_fid(_wrfc.index()); |
| _pg_offset_dblks += ret; |
| _cached_offset_dblks += ret; |
| dtokp->incr_dblocks_written(ret); |
| dtokp->incr_pg_cnt(); |
| _page_cb_arr[_pg_index]._pdtokl->push_back(dtokp); |
| |
| // Is the encoding of this record complete? |
| if (dtokp->dblocks_written() >= _txn_rec.rec_size_dblks()) |
| { |
| dtokp->set_wstate(data_tok::ABORT_SUBM); |
| |
| // Delete this txn from tmap, unlock any locked records in emap |
| std::string xid((const char*)xid_ptr, xid_len); |
| txn_data_list tdl = _tmap.get_remove_tdata_list(xid); // tdl will be empty if xid not found |
| for (tdl_itr itr = tdl.begin(); itr != tdl.end(); itr++) |
| { |
| if (!itr->_enq_flag) |
| _emap.unlock(itr->_drid); // ignore rid not found error |
| if (itr->_enq_flag) |
| _wrfc.decr_enqcnt(itr->_pfid); |
| } |
| std::pair<std::set<std::string>::iterator, bool> res = _txn_pending_set.insert(xid); |
| if (!res.second) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "_txn_pending_set: xid=\"" << xid << "\""; |
| throw jexception(jerrno::JERR_MAP_DUPLICATE, oss.str(), "wmgr", "abort"); |
| } |
| |
| done = true; |
| } |
| else |
| dtokp->set_wstate(data_tok::ABORT_PART); |
| |
| file_header_check(rid, cont, _txn_rec.rec_size_dblks() - data_offs_dblks); |
| flush_check(res, cont, done); |
| } |
| if (dtokp->wstate() >= data_tok::ABORT_SUBM) |
| _abort_busy = false; |
| return res; |
| } |
| |
| iores |
| wmgr::commit(data_tok* dtokp, const void* const xid_ptr, const std::size_t xid_len) |
| { |
| // commit and abort MUST have a valid xid |
| assert(xid_ptr != 0 && xid_len > 0); |
| |
| if (_enq_busy || _deq_busy || _abort_busy) |
| return RHM_IORES_BUSY; |
| |
| iores res = pre_write_check(WMGR_COMMIT, dtokp); |
| if (res != RHM_IORES_SUCCESS) |
| return res; |
| |
| bool cont = false; |
| if (_commit_busy) // If commit() exited last time with RHM_IORES_FULL or RHM_IORES_PAGE_AIOWAIT |
| { |
| if (dtokp->wstate() == data_tok::COMMIT_PART) |
| cont = true; |
| else |
| { |
| std::ostringstream oss; |
| oss << "This data_tok: id=" << dtokp->id() << " state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_DEQDISCONT, oss.str(), "wmgr", "commit"); |
| } |
| } |
| |
| u_int64_t rid = (dtokp->external_rid() | cont) ? dtokp->rid() : _wrfc.get_incr_rid(); |
| _txn_rec.reset(RHM_JDAT_TXC_MAGIC, rid, xid_ptr, xid_len, _wrfc.owi()); |
| if (!cont) |
| { |
| dtokp->set_rid(rid); |
| dtokp->set_dequeue_rid(0); |
| dtokp->set_xid(xid_ptr, xid_len); |
| dtokp->set_dblocks_written(0); // Reset dblks_written from previous op |
| _commit_busy = true; |
| } |
| bool done = false; |
| while (!done) |
| { |
| assert(_pg_offset_dblks < _cache_pgsize_sblks * JRNL_SBLK_SIZE); |
| void* wptr = (void*)((char*)_page_ptr_arr[_pg_index] + _pg_offset_dblks * JRNL_DBLK_SIZE); |
| u_int32_t data_offs_dblks = dtokp->dblocks_written(); |
| u_int32_t ret = _txn_rec.encode(wptr, data_offs_dblks, |
| (_cache_pgsize_sblks * JRNL_SBLK_SIZE) - _pg_offset_dblks); |
| |
| // Remember fid which contains the record header in case record is split over several files |
| if (data_offs_dblks == 0) |
| dtokp->set_fid(_wrfc.index()); |
| _pg_offset_dblks += ret; |
| _cached_offset_dblks += ret; |
| dtokp->incr_dblocks_written(ret); |
| dtokp->incr_pg_cnt(); |
| _page_cb_arr[_pg_index]._pdtokl->push_back(dtokp); |
| |
| // Is the encoding of this record complete? |
| if (dtokp->dblocks_written() >= _txn_rec.rec_size_dblks()) |
| { |
| dtokp->set_wstate(data_tok::COMMIT_SUBM); |
| |
| // Delete this txn from tmap, process records into emap |
| std::string xid((const char*)xid_ptr, xid_len); |
| txn_data_list tdl = _tmap.get_remove_tdata_list(xid); // tdl will be empty if xid not found |
| for (tdl_itr itr = tdl.begin(); itr != tdl.end(); itr++) |
| { |
| if (itr->_enq_flag) // txn enqueue |
| { |
| if (_emap.insert_pfid(itr->_rid, itr->_pfid) < enq_map::EMAP_OK) // fail |
| { |
| // The only error code emap::insert_pfid() returns is enq_map::EMAP_DUP_RID. |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << itr->_rid << " _pfid=0x" << itr->_pfid; |
| throw jexception(jerrno::JERR_MAP_DUPLICATE, oss.str(), "wmgr", "commit"); |
| } |
| } |
| else // txn dequeue |
| { |
| int16_t fid = _emap.get_remove_pfid(itr->_drid, true); |
| if (fid < enq_map::EMAP_OK) // fail |
| { |
| if (fid == enq_map::EMAP_RID_NOT_FOUND) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << rid; |
| throw jexception(jerrno::JERR_MAP_NOTFOUND, oss.str(), "wmgr", "dequeue"); |
| } |
| if (fid == enq_map::EMAP_LOCKED) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "rid=0x" << rid; |
| throw jexception(jerrno::JERR_MAP_LOCKED, oss.str(), "wmgr", "dequeue"); |
| } |
| } |
| _wrfc.decr_enqcnt(fid); |
| } |
| } |
| std::pair<std::set<std::string>::iterator, bool> res = _txn_pending_set.insert(xid); |
| if (!res.second) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "_txn_pending_set: xid=\"" << xid << "\""; |
| throw jexception(jerrno::JERR_MAP_DUPLICATE, oss.str(), "wmgr", "commit"); |
| } |
| |
| done = true; |
| } |
| else |
| dtokp->set_wstate(data_tok::COMMIT_PART); |
| |
| file_header_check(rid, cont, _txn_rec.rec_size_dblks() - data_offs_dblks); |
| flush_check(res, cont, done); |
| } |
| if (dtokp->wstate() >= data_tok::COMMIT_SUBM) |
| _commit_busy = false; |
| return res; |
| } |
| |
| void |
| wmgr::file_header_check(const u_int64_t rid, const bool cont, const u_int32_t rec_dblks_rem) |
| { |
| // Has the file header been written (i.e. write pointers still at 0)? |
| if (_wrfc.is_void()) |
| { |
| bool file_fit = rec_dblks_rem <= _jfsize_dblks; |
| bool file_full = rec_dblks_rem == _jfsize_dblks; |
| std::size_t fro = 0; |
| if (cont) |
| { |
| if (file_fit && !file_full) |
| fro = (rec_dblks_rem + JRNL_SBLK_SIZE) * JRNL_DBLK_SIZE; |
| } |
| else |
| fro = JRNL_SBLK_SIZE * JRNL_DBLK_SIZE; |
| write_fhdr(rid, _wrfc.index(), _wrfc.index(), fro); |
| } |
| } |
| |
| void |
| wmgr::flush_check(iores& res, bool& cont, bool& done) |
| { |
| // Is page is full, flush |
| if (_pg_offset_dblks >= _cache_pgsize_sblks * JRNL_SBLK_SIZE) |
| { |
| res = write_flush(); |
| assert(res == RHM_IORES_SUCCESS); |
| |
| if (_page_cb_arr[_pg_index]._state == AIO_PENDING && !done) |
| { |
| res = RHM_IORES_PAGE_AIOWAIT; |
| done = true; |
| } |
| |
| // If file is full, rotate to next file |
| if (_pg_cntr >= _jfsize_pgs) |
| { |
| iores rfres = rotate_file(); |
| if (rfres != RHM_IORES_SUCCESS) |
| res = rfres; |
| if (!done) |
| { |
| if (rfres == RHM_IORES_SUCCESS) |
| cont = true; |
| else |
| done = true; |
| } |
| } |
| } |
| } |
| |
| iores |
| wmgr::flush() |
| { |
| iores res = write_flush(); |
| if (_pg_cntr >= _jfsize_pgs) |
| { |
| iores rfres = rotate_file(); |
| if (rfres != RHM_IORES_SUCCESS) |
| res = rfres; |
| } |
| return res; |
| } |
| |
| iores |
| wmgr::write_flush() |
| { |
| iores res = RHM_IORES_SUCCESS; |
| // Don't bother flushing an empty page or one that is still in state AIO_PENDING |
| if (_cached_offset_dblks) |
| { |
| if (_page_cb_arr[_pg_index]._state == AIO_PENDING) |
| res = RHM_IORES_PAGE_AIOWAIT; |
| else |
| { |
| if (_page_cb_arr[_pg_index]._state != IN_USE) |
| { |
| std::ostringstream oss; |
| oss << "pg_index=" << _pg_index << " state=" << _page_cb_arr[_pg_index].state_str(); |
| throw jexception(jerrno::JERR_WMGR_BADPGSTATE, oss.str(), "wmgr", |
| "write_flush"); |
| } |
| |
| // Send current page using AIO |
| |
| // In manual flushes, dblks may not coincide with sblks, add filler records ("RHMx") |
| // if necessary. |
| dblk_roundup(); |
| |
| std::size_t pg_offs = (_pg_offset_dblks - _cached_offset_dblks) * JRNL_DBLK_SIZE; |
| aio_cb* aiocbp = &_aio_cb_arr[_pg_index]; |
| aio::prep_pwrite_2(aiocbp, _wrfc.fh(), |
| (char*)_page_ptr_arr[_pg_index] + pg_offs, _cached_offset_dblks * JRNL_DBLK_SIZE, |
| _wrfc.subm_offs()); |
| page_cb* pcbp = (page_cb*)(aiocbp->data); // This page control block (pcb) |
| pcbp->_wdblks = _cached_offset_dblks; |
| pcbp->_wfh = _wrfc.file_controller(); |
| if (aio::submit(_ioctx, 1, &aiocbp) < 0) |
| throw jexception(jerrno::JERR__AIO, "wmgr", "write_flush"); |
| _wrfc.add_subm_cnt_dblks(_cached_offset_dblks); |
| _wrfc.incr_aio_cnt(); |
| _aio_evt_rem++; |
| _cached_offset_dblks = 0; |
| _jc->instr_incr_outstanding_aio_cnt(); |
| |
| rotate_page(); // increments _pg_index, resets _pg_offset_dblks if req'd |
| if (_page_cb_arr[_pg_index]._state == UNUSED) |
| _page_cb_arr[_pg_index]._state = IN_USE; |
| } |
| } |
| get_events(UNUSED, 0); |
| if (_page_cb_arr[_pg_index]._state == UNUSED) |
| _page_cb_arr[_pg_index]._state = IN_USE; |
| return res; |
| } |
| |
| iores |
| wmgr::rotate_file() |
| { |
| _pg_cntr = 0; |
| iores res = _wrfc.rotate(); |
| _jc->chk_wr_frot(); |
| return res; |
| } |
| |
| int32_t |
| wmgr::get_events(page_state state, timespec* const timeout, bool flush) |
| { |
| if (_aio_evt_rem == 0) // no events to get |
| return 0; |
| |
| int ret = 0; |
| if ((ret = aio::getevents(_ioctx, flush ? _aio_evt_rem : 1, _aio_evt_rem/*_cache_num_pages + _jc->num_jfiles()*/, _aio_event_arr, timeout)) < 0) |
| { |
| if (ret == -EINTR) // Interrupted by signal |
| return 0; |
| std::ostringstream oss; |
| oss << "io_getevents() failed: " << std::strerror(-ret) << " (" << ret << ")"; |
| throw jexception(jerrno::JERR__AIO, oss.str(), "wmgr", "get_events"); |
| } |
| |
| if (ret == 0 && timeout) |
| return jerrno::AIO_TIMEOUT; |
| |
| int32_t tot_data_toks = 0; |
| for (int i=0; i<ret; i++) // Index of returned AIOs |
| { |
| if (_aio_evt_rem == 0) |
| { |
| std::ostringstream oss; |
| oss << "_aio_evt_rem; evt " << (i + 1) << " of " << ret; |
| throw jexception(jerrno::JERR__UNDERFLOW, oss.str(), "wmgr", "get_events"); |
| } |
| _aio_evt_rem--; |
| aio_cb* aiocbp = _aio_event_arr[i].obj; // This I/O control block (iocb) |
| page_cb* pcbp = (page_cb*)(aiocbp->data); // This page control block (pcb) |
| long aioret = (long)_aio_event_arr[i].res; |
| if (aioret < 0) |
| { |
| std::ostringstream oss; |
| oss << "AIO write operation failed: " << std::strerror(-aioret) << " (" << aioret << ") ["; |
| if (pcbp) |
| oss << "pg=" << pcbp->_index; |
| else |
| { |
| file_hdr* fhp = (file_hdr*)aiocbp->u.c.buf; |
| oss << "fid=" << fhp->_pfid; |
| } |
| oss << " size=" << aiocbp->u.c.nbytes; |
| oss << " offset=" << aiocbp->u.c.offset << " fh=" << aiocbp->aio_fildes << "]"; |
| throw jexception(jerrno::JERR__AIO, oss.str(), "wmgr", "get_events"); |
| } |
| if (pcbp) // Page writes have pcb |
| { |
| u_int32_t s = pcbp->_pdtokl->size(); |
| std::vector<data_tok*> dtokl; |
| dtokl.reserve(s); |
| for (u_int32_t k=0; k<s; k++) |
| { |
| data_tok* dtokp = pcbp->_pdtokl->at(k); |
| if (dtokp->decr_pg_cnt() == 0) |
| { |
| std::set<std::string>::iterator it; |
| switch (dtokp->wstate()) |
| { |
| case data_tok::ENQ_SUBM: |
| dtokl.push_back(dtokp); |
| tot_data_toks++; |
| dtokp->set_wstate(data_tok::ENQ); |
| if (dtokp->has_xid()) |
| // Ignoring return value here. A non-zero return can signify that the transaction |
| // has committed or aborted, and which was completed prior to the aio returning. |
| _tmap.set_aio_compl(dtokp->xid(), dtokp->rid()); |
| break; |
| case data_tok::DEQ_SUBM: |
| dtokl.push_back(dtokp); |
| tot_data_toks++; |
| dtokp->set_wstate(data_tok::DEQ); |
| if (dtokp->has_xid()) |
| // Ignoring return value - see note above. |
| _tmap.set_aio_compl(dtokp->xid(), dtokp->rid()); |
| break; |
| case data_tok::ABORT_SUBM: |
| dtokl.push_back(dtokp); |
| tot_data_toks++; |
| dtokp->set_wstate(data_tok::ABORTED); |
| it = _txn_pending_set.find(dtokp->xid()); |
| if (it == _txn_pending_set.end()) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "_txn_pending_set: abort xid=\""; |
| oss << dtokp->xid() << "\""; |
| throw jexception(jerrno::JERR_MAP_NOTFOUND, oss.str(), "wmgr", |
| "get_events"); |
| } |
| _txn_pending_set.erase(it); |
| break; |
| case data_tok::COMMIT_SUBM: |
| dtokl.push_back(dtokp); |
| tot_data_toks++; |
| dtokp->set_wstate(data_tok::COMMITTED); |
| it = _txn_pending_set.find(dtokp->xid()); |
| if (it == _txn_pending_set.end()) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "_txn_pending_set: commit xid=\""; |
| oss << dtokp->xid() << "\""; |
| throw jexception(jerrno::JERR_MAP_NOTFOUND, oss.str(), "wmgr", |
| "get_events"); |
| } |
| _txn_pending_set.erase(it); |
| break; |
| case data_tok::ENQ_PART: |
| case data_tok::DEQ_PART: |
| case data_tok::ABORT_PART: |
| case data_tok::COMMIT_PART: |
| // ignore these |
| break; |
| default: |
| // throw for anything else |
| std::ostringstream oss; |
| oss << "dtok_id=" << dtokp->id() << " dtok_state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_BADDTOKSTATE, oss.str(), "wmgr", |
| "get_events"); |
| } // switch |
| } // if |
| } // for |
| |
| // Increment the completed write offset |
| // NOTE: We cannot use _wrfc here, as it may have rotated since submitting count. |
| // Use stored pointer to fcntl in the pcb instead. |
| pcbp->_wfh->add_wr_cmpl_cnt_dblks(pcbp->_wdblks); |
| pcbp->_wfh->decr_aio_cnt(); |
| _jc->instr_decr_outstanding_aio_cnt(); |
| |
| // Clean up this pcb's data_tok list |
| pcbp->_pdtokl->clear(); |
| pcbp->_state = state; |
| |
| // Perform AIO return callback |
| if (_cbp && tot_data_toks) |
| _cbp->wr_aio_cb(dtokl); |
| } |
| else // File header writes have no pcb |
| { |
| // get lfid from original file header record, update info for that lfid |
| file_hdr* fhp = (file_hdr*)aiocbp->u.c.buf; |
| u_int32_t lfid = fhp->_lfid; |
| fcntl* fcntlp = _jc->get_fcntlp(lfid); |
| fcntlp->add_wr_cmpl_cnt_dblks(JRNL_SBLK_SIZE); |
| fcntlp->decr_aio_cnt(); |
| fcntlp->set_wr_fhdr_aio_outstanding(false); |
| } |
| } |
| |
| return tot_data_toks; |
| } |
| |
| bool |
| wmgr::is_txn_synced(const std::string& xid) |
| { |
| // Ignore xid not found error here |
| if (_tmap.is_txn_synced(xid) == txn_map::TMAP_NOT_SYNCED) |
| return false; |
| // Check for outstanding commit/aborts |
| std::set<std::string>::iterator it = _txn_pending_set.find(xid); |
| return it == _txn_pending_set.end(); |
| } |
| |
| void |
| wmgr::initialize(aio_callback* const cbp, const u_int32_t wcache_pgsize_sblks, const u_int16_t wcache_num_pages) |
| { |
| pmgr::initialize(cbp, wcache_pgsize_sblks, wcache_num_pages); |
| wmgr::clean(); |
| _num_jfiles = _jc->num_jfiles(); |
| if (::posix_memalign(&_fhdr_base_ptr, _sblksize, _sblksize * _num_jfiles)) |
| { |
| wmgr::clean(); |
| std::ostringstream oss; |
| oss << "posix_memalign(): blksize=" << _sblksize << " size=" << _sblksize; |
| oss << FORMAT_SYSERR(errno); |
| throw jexception(jerrno::JERR__MALLOC, oss.str(), "wmgr", "initialize"); |
| } |
| _fhdr_ptr_arr = (void**)std::malloc(_num_jfiles * sizeof(void*)); |
| MALLOC_CHK(_fhdr_ptr_arr, "_fhdr_ptr_arr", "wmgr", "initialize"); |
| _fhdr_aio_cb_arr = (aio_cb**)std::malloc(sizeof(aio_cb*) * _num_jfiles); |
| MALLOC_CHK(_fhdr_aio_cb_arr, "_fhdr_aio_cb_arr", "wmgr", "initialize"); |
| std::memset(_fhdr_aio_cb_arr, 0, sizeof(aio_cb*) * _num_jfiles); |
| for (u_int16_t i=0; i<_num_jfiles; i++) |
| { |
| _fhdr_ptr_arr[i] = (void*)((char*)_fhdr_base_ptr + _sblksize * i); |
| _fhdr_aio_cb_arr[i] = new aio_cb; |
| } |
| _page_cb_arr[0]._state = IN_USE; |
| _ddtokl.clear(); |
| _cached_offset_dblks = 0; |
| _enq_busy = false; |
| } |
| |
| iores |
| wmgr::pre_write_check(const _op_type op, const data_tok* const dtokp, |
| const std::size_t xidsize, const std::size_t dsize, const bool external |
| ) const |
| { |
| // Check status of current file |
| if (!_wrfc.is_wr_reset()) |
| { |
| if (!_wrfc.wr_reset()) |
| return RHM_IORES_FULL; |
| } |
| |
| // Check status of current page is ok for writing |
| if (_page_cb_arr[_pg_index]._state != IN_USE) |
| { |
| if (_page_cb_arr[_pg_index]._state == UNUSED) |
| _page_cb_arr[_pg_index]._state = IN_USE; |
| else if (_page_cb_arr[_pg_index]._state == AIO_PENDING) |
| return RHM_IORES_PAGE_AIOWAIT; |
| else |
| { |
| std::ostringstream oss; |
| oss << "jrnl=" << _jc->id() << " op=" << _op_str[op]; |
| oss << " index=" << _pg_index << " pg_state=" << _page_cb_arr[_pg_index].state_str(); |
| throw jexception(jerrno::JERR_WMGR_BADPGSTATE, oss.str(), "wmgr", "pre_write_check"); |
| } |
| } |
| |
| // operation-specific checks |
| switch (op) |
| { |
| case WMGR_ENQUEUE: |
| { |
| // Check for enqueue reaching cutoff threshold |
| u_int32_t size_dblks = jrec::size_dblks(enq_rec::rec_size(xidsize, dsize, |
| external)); |
| if (!_enq_busy && _wrfc.enq_threshold(_cached_offset_dblks + size_dblks)) |
| return RHM_IORES_ENQCAPTHRESH; |
| if (!dtokp->is_writable()) |
| { |
| std::ostringstream oss; |
| oss << "jrnl=" << _jc->id() << " op=" << _op_str[op]; |
| oss << " dtok_id=" << dtokp->id() << " dtok_state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_BADDTOKSTATE, oss.str(), "wmgr", |
| "pre_write_check"); |
| } |
| } |
| break; |
| case WMGR_DEQUEUE: |
| if (!dtokp->is_dequeueable()) |
| { |
| std::ostringstream oss; |
| oss << "jrnl=" << _jc->id() << " op=" << _op_str[op]; |
| oss << " dtok_id=" << dtokp->id() << " dtok_state=" << dtokp->wstate_str(); |
| throw jexception(jerrno::JERR_WMGR_BADDTOKSTATE, oss.str(), "wmgr", |
| "pre_write_check"); |
| } |
| break; |
| case WMGR_ABORT: |
| break; |
| case WMGR_COMMIT: |
| break; |
| } |
| |
| return RHM_IORES_SUCCESS; |
| } |
| |
| void |
| wmgr::dequeue_check(const std::string& xid, const u_int64_t drid) |
| { |
| // First check emap |
| bool found = false; |
| int16_t fid = _emap.get_pfid(drid); |
| if (fid < enq_map::EMAP_OK) // fail |
| { |
| if (fid == enq_map::EMAP_RID_NOT_FOUND) |
| { |
| if (xid.size()) |
| found = _tmap.data_exists(xid, drid); |
| } |
| else if (fid == enq_map::EMAP_LOCKED) |
| { |
| std::ostringstream oss; |
| oss << std::hex << "drid=0x" << drid; |
| throw jexception(jerrno::JERR_MAP_LOCKED, oss.str(), "wmgr", "dequeue_check"); |
| } |
| } |
| else |
| found = true; |
| if (!found) |
| { |
| std::ostringstream oss; |
| oss << "jrnl=" << _jc->id() << " drid=0x" << std::hex << drid; |
| throw jexception(jerrno::JERR_WMGR_DEQRIDNOTENQ, oss.str(), "wmgr", "dequeue_check"); |
| } |
| } |
| |
| void |
| wmgr::dblk_roundup() |
| { |
| const u_int32_t xmagic = RHM_JDAT_EMPTY_MAGIC; |
| u_int32_t wdblks = jrec::size_blks(_cached_offset_dblks, JRNL_SBLK_SIZE) * JRNL_SBLK_SIZE; |
| while (_cached_offset_dblks < wdblks) |
| { |
| void* wptr = (void*)((char*)_page_ptr_arr[_pg_index] + _pg_offset_dblks * JRNL_DBLK_SIZE); |
| std::memcpy(wptr, (const void*)&xmagic, sizeof(xmagic)); |
| #ifdef RHM_CLEAN |
| std::memset((char*)wptr + sizeof(xmagic), RHM_CLEAN_CHAR, JRNL_DBLK_SIZE - sizeof(xmagic)); |
| #endif |
| _pg_offset_dblks++; |
| _cached_offset_dblks++; |
| } |
| } |
| |
| void |
| wmgr::write_fhdr(u_int64_t rid, u_int16_t fid, u_int16_t lid, std::size_t fro) |
| { |
| file_hdr fhdr(RHM_JDAT_FILE_MAGIC, RHM_JDAT_VERSION, rid, fid, lid, fro, _wrfc.owi(), true); |
| std::memcpy(_fhdr_ptr_arr[fid], &fhdr, sizeof(fhdr)); |
| #ifdef RHM_CLEAN |
| std::memset((char*)_fhdr_ptr_arr[fid] + sizeof(fhdr), RHM_CLEAN_CHAR, _sblksize - sizeof(fhdr)); |
| #endif |
| aio_cb* aiocbp = _fhdr_aio_cb_arr[fid]; |
| aio::prep_pwrite(aiocbp, _wrfc.fh(), _fhdr_ptr_arr[fid], _sblksize, 0); |
| if (aio::submit(_ioctx, 1, &aiocbp) < 0) |
| throw jexception(jerrno::JERR__AIO, "wmgr", "write_fhdr"); |
| _aio_evt_rem++; |
| _wrfc.add_subm_cnt_dblks(JRNL_SBLK_SIZE); |
| _wrfc.incr_aio_cnt(); |
| _wrfc.file_controller()->set_wr_fhdr_aio_outstanding(true); |
| } |
| |
| void |
| wmgr::rotate_page() |
| { |
| _page_cb_arr[_pg_index]._state = AIO_PENDING; |
| if (_pg_offset_dblks >= _cache_pgsize_sblks * JRNL_SBLK_SIZE) |
| { |
| _pg_offset_dblks = 0; |
| _pg_cntr++; |
| } |
| if (++_pg_index >= _cache_num_pages) |
| _pg_index = 0; |
| } |
| |
| void |
| wmgr::clean() |
| { |
| std::free(_fhdr_base_ptr); |
| _fhdr_base_ptr = 0; |
| |
| std::free(_fhdr_ptr_arr); |
| _fhdr_ptr_arr = 0; |
| |
| if (_fhdr_aio_cb_arr) |
| { |
| for (u_int32_t i=0; i<_num_jfiles; i++) |
| delete _fhdr_aio_cb_arr[i]; |
| std::free(_fhdr_aio_cb_arr); |
| _fhdr_aio_cb_arr = 0; |
| } |
| } |
| |
| const std::string |
| wmgr::status_str() const |
| { |
| std::ostringstream oss; |
| oss << "wmgr: pi=" << _pg_index << " pc=" << _pg_cntr; |
| oss << " po=" << _pg_offset_dblks << " aer=" << _aio_evt_rem; |
| oss << " edac:" << (_enq_busy?"T":"F") << (_deq_busy?"T":"F"); |
| oss << (_abort_busy?"T":"F") << (_commit_busy?"T":"F"); |
| oss << " ps=["; |
| for (int i=0; i<_cache_num_pages; i++) |
| { |
| switch (_page_cb_arr[i]._state) |
| { |
| case UNUSED: oss << "-"; break; |
| case IN_USE: oss << "U"; break; |
| case AIO_PENDING: oss << "A"; break; |
| case AIO_COMPLETE: oss << "*"; break; |
| default: oss << _page_cb_arr[i]._state; |
| } |
| } |
| oss << "] " << _wrfc.status_str(); |
| return oss.str(); |
| } |
| |
| // static |
| |
| const char* wmgr::_op_str[] = {"enqueue", "dequeue", "abort", "commit"}; |
| |
| } // namespace journal |
| } // namespace mrg |
