X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fcommon%2FWorkQueue.cc;fp=src%2Fceph%2Fsrc%2Fcommon%2FWorkQueue.cc;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=7da8c85d37448e5fb11fd03bd56c0bdf1ba121fd;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git

diff --git a/src/ceph/src/common/WorkQueue.cc b/src/ceph/src/common/WorkQueue.cc
deleted file mode 100644
index 7da8c85..0000000
--- a/src/ceph/src/common/WorkQueue.cc
+++ /dev/null
@@ -1,439 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software 
- * Foundation.  See file COPYING.
- * 
- */
-
-#include "WorkQueue.h"
-#include "include/compat.h"
-#include "common/errno.h"
-
-#define dout_subsys ceph_subsys_tp
-#undef dout_prefix
-#define dout_prefix *_dout << name << " "
-
-
-ThreadPool::ThreadPool(CephContext *cct_, string nm, string tn, int n, const char *option)
-  : cct(cct_), name(std::move(nm)), thread_name(std::move(tn)),
-    lockname(name + "::lock"),
-    _lock(lockname.c_str()),  // this should be safe due to declaration order
-    _stop(false),
-    _pause(0),
-    _draining(0),
-    ioprio_class(-1),
-    ioprio_priority(-1),
-    _num_threads(n),
-    processing(0)
-{
-  if (option) {
-    _thread_num_option = option;
-    // set up conf_keys
-    _conf_keys = new const char*[2];
-    _conf_keys[0] = _thread_num_option.c_str();
-    _conf_keys[1] = NULL;
-  } else {
-    _conf_keys = new const char*[1];
-    _conf_keys[0] = NULL;
-  }
-}
-
-void ThreadPool::TPHandle::suspend_tp_timeout()
-{
-  cct->get_heartbeat_map()->clear_timeout(hb);
-}
-
-void ThreadPool::TPHandle::reset_tp_timeout()
-{
-  cct->get_heartbeat_map()->reset_timeout(
-    hb, grace, suicide_grace);
-}
-
-ThreadPool::~ThreadPool()
-{
-  assert(_threads.empty());
-  delete[] _conf_keys;
-}
-
-void ThreadPool::handle_conf_change(const struct md_config_t *conf,
-				    const std::set <std::string> &changed)
-{
-  if (changed.count(_thread_num_option)) {
-    char *buf;
-    int r = conf->get_val(_thread_num_option.c_str(), &buf, -1);
-    assert(r >= 0);
-    int v = atoi(buf);
-    free(buf);
-    if (v >= 0) {
-      _lock.Lock();
-      _num_threads = v;
-      start_threads();
-      _cond.SignalAll();
-      _lock.Unlock();
-    }
-  }
-}
-
-void ThreadPool::worker(WorkThread *wt)
-{
-  _lock.Lock();
-  ldout(cct,10) << "worker start" << dendl;
-  
-  std::stringstream ss;
-  ss << name << " thread " << (void *)pthread_self();
-  heartbeat_handle_d *hb = cct->get_heartbeat_map()->add_worker(ss.str(), pthread_self());
-
-  while (!_stop) {
-
-    // manage dynamic thread pool
-    join_old_threads();
-    if (_threads.size() > _num_threads) {
-      ldout(cct,1) << " worker shutting down; too many threads (" << _threads.size() << " > " << _num_threads << ")" << dendl;
-      _threads.erase(wt);
-      _old_threads.push_back(wt);
-      break;
-    }
-
-    if (!_pause && !work_queues.empty()) {
-      WorkQueue_* wq;
-      int tries = work_queues.size();
-      bool did = false;
-      while (tries--) {
-	next_work_queue %= work_queues.size();
-	wq = work_queues[next_work_queue++];
-	
-	void *item = wq->_void_dequeue();
-	if (item) {
-	  processing++;
-	  ldout(cct,12) << "worker wq " << wq->name << " start processing " << item
-			<< " (" << processing << " active)" << dendl;
-	  TPHandle tp_handle(cct, hb, wq->timeout_interval, wq->suicide_interval);
-	  tp_handle.reset_tp_timeout();
-	  _lock.Unlock();
-	  wq->_void_process(item, tp_handle);
-	  _lock.Lock();
-	  wq->_void_process_finish(item);
-	  processing--;
-	  ldout(cct,15) << "worker wq " << wq->name << " done processing " << item
-			<< " (" << processing << " active)" << dendl;
-	  if (_pause || _draining)
-	    _wait_cond.Signal();
-	  did = true;
-	  break;
-	}
-      }
-      if (did)
-	continue;
-    }
-
-    ldout(cct,20) << "worker waiting" << dendl;
-    cct->get_heartbeat_map()->reset_timeout(
-      hb,
-      cct->_conf->threadpool_default_timeout,
-      0);
-    _cond.WaitInterval(_lock,
-      utime_t(
-	cct->_conf->threadpool_empty_queue_max_wait, 0));
-  }
-  ldout(cct,1) << "worker finish" << dendl;
-
-  cct->get_heartbeat_map()->remove_worker(hb);
-
-  _lock.Unlock();
-}
-
-void ThreadPool::start_threads()
-{
-  assert(_lock.is_locked());
-  while (_threads.size() < _num_threads) {
-    WorkThread *wt = new WorkThread(this);
-    ldout(cct, 10) << "start_threads creating and starting " << wt << dendl;
-    _threads.insert(wt);
-
-    int r = wt->set_ioprio(ioprio_class, ioprio_priority);
-    if (r < 0)
-      lderr(cct) << " set_ioprio got " << cpp_strerror(r) << dendl;
-
-    wt->create(thread_name.c_str());
-  }
-}
-
-void ThreadPool::join_old_threads()
-{
-  assert(_lock.is_locked());
-  while (!_old_threads.empty()) {
-    ldout(cct, 10) << "join_old_threads joining and deleting " << _old_threads.front() << dendl;
-    _old_threads.front()->join();
-    delete _old_threads.front();
-    _old_threads.pop_front();
-  }
-}
-
-void ThreadPool::start()
-{
-  ldout(cct,10) << "start" << dendl;
-
-  if (_thread_num_option.length()) {
-    ldout(cct, 10) << " registering config observer on " << _thread_num_option << dendl;
-    cct->_conf->add_observer(this);
-  }
-
-  _lock.Lock();
-  start_threads();
-  _lock.Unlock();
-  ldout(cct,15) << "started" << dendl;
-}
-
-void ThreadPool::stop(bool clear_after)
-{
-  ldout(cct,10) << "stop" << dendl;
-
-  if (_thread_num_option.length()) {
-    ldout(cct, 10) << " unregistering config observer on " << _thread_num_option << dendl;
-    cct->_conf->remove_observer(this);
-  }
-
-  _lock.Lock();
-  _stop = true;
-  _cond.Signal();
-  join_old_threads();
-  _lock.Unlock();
-  for (set<WorkThread*>::iterator p = _threads.begin();
-       p != _threads.end();
-       ++p) {
-    (*p)->join();
-    delete *p;
-  }
-  _threads.clear();
-  _lock.Lock();
-  for (unsigned i=0; i<work_queues.size(); i++)
-    work_queues[i]->_clear();
-  _stop = false;
-  _lock.Unlock();    
-  ldout(cct,15) << "stopped" << dendl;
-}
-
-void ThreadPool::pause()
-{
-  ldout(cct,10) << "pause" << dendl;
-  _lock.Lock();
-  _pause++;
-  while (processing)
-    _wait_cond.Wait(_lock);
-  _lock.Unlock();
-  ldout(cct,15) << "paused" << dendl;
-}
-
-void ThreadPool::pause_new()
-{
-  ldout(cct,10) << "pause_new" << dendl;
-  _lock.Lock();
-  _pause++;
-  _lock.Unlock();
-}
-
-void ThreadPool::unpause()
-{
-  ldout(cct,10) << "unpause" << dendl;
-  _lock.Lock();
-  assert(_pause > 0);
-  _pause--;
-  _cond.Signal();
-  _lock.Unlock();
-}
-
-void ThreadPool::drain(WorkQueue_* wq)
-{
-  ldout(cct,10) << "drain" << dendl;
-  _lock.Lock();
-  _draining++;
-  while (processing || (wq != NULL && !wq->_empty()))
-    _wait_cond.Wait(_lock);
-  _draining--;
-  _lock.Unlock();
-}
-
-void ThreadPool::set_ioprio(int cls, int priority)
-{
-  Mutex::Locker l(_lock);
-  ioprio_class = cls;
-  ioprio_priority = priority;
-  for (set<WorkThread*>::iterator p = _threads.begin();
-       p != _threads.end();
-       ++p) {
-    ldout(cct,10) << __func__ 
-		  << " class " << cls << " priority " << priority
-		  << " pid " << (*p)->get_pid()
-		  << dendl;
-    int r = (*p)->set_ioprio(cls, priority);
-    if (r < 0)
-      lderr(cct) << " set_ioprio got " << cpp_strerror(r) << dendl;
-  }
-}
-
-ShardedThreadPool::ShardedThreadPool(CephContext *pcct_, string nm, string tn,
-  uint32_t pnum_threads):
-  cct(pcct_),
-  name(std::move(nm)),
-  thread_name(std::move(tn)),
-  lockname(name + "::lock"),
-  shardedpool_lock(lockname.c_str()),
-  num_threads(pnum_threads),
-  num_paused(0),
-  num_drained(0),
-  wq(NULL) {}
-
-void ShardedThreadPool::shardedthreadpool_worker(uint32_t thread_index)
-{
-  assert(wq != NULL);
-  ldout(cct,10) << "worker start" << dendl;
-
-  std::stringstream ss;
-  ss << name << " thread " << (void *)pthread_self();
-  heartbeat_handle_d *hb = cct->get_heartbeat_map()->add_worker(ss.str(), pthread_self());
-
-  while (!stop_threads) {
-    if (pause_threads) {
-      shardedpool_lock.Lock();
-      ++num_paused;
-      wait_cond.Signal();
-      while (pause_threads) {
-       cct->get_heartbeat_map()->reset_timeout(
-	        hb,
-	        wq->timeout_interval, wq->suicide_interval);
-       shardedpool_cond.WaitInterval(shardedpool_lock,
-	   utime_t(
-	   cct->_conf->threadpool_empty_queue_max_wait, 0));
-      }
-      --num_paused;
-      shardedpool_lock.Unlock();
-    }
-    if (drain_threads) {
-      shardedpool_lock.Lock();
-      if (wq->is_shard_empty(thread_index)) {
-        ++num_drained;
-        wait_cond.Signal();
-        while (drain_threads) {
-	  cct->get_heartbeat_map()->reset_timeout(
-	    hb,
-	    wq->timeout_interval, wq->suicide_interval);
-          shardedpool_cond.WaitInterval(shardedpool_lock,
-	    utime_t(
-	      cct->_conf->threadpool_empty_queue_max_wait, 0));
-        }
-        --num_drained;
-      }
-      shardedpool_lock.Unlock();
-    }
-
-    cct->get_heartbeat_map()->reset_timeout(
-      hb,
-      wq->timeout_interval, wq->suicide_interval);
-    wq->_process(thread_index, hb);
-
-  }
-
-  ldout(cct,10) << "sharded worker finish" << dendl;
-
-  cct->get_heartbeat_map()->remove_worker(hb);
-
-}
-
-void ShardedThreadPool::start_threads()
-{
-  assert(shardedpool_lock.is_locked());
-  int32_t thread_index = 0;
-  while (threads_shardedpool.size() < num_threads) {
-
-    WorkThreadSharded *wt = new WorkThreadSharded(this, thread_index);
-    ldout(cct, 10) << "start_threads creating and starting " << wt << dendl;
-    threads_shardedpool.push_back(wt);
-    wt->create(thread_name.c_str());
-    thread_index++;
-  }
-}
-
-void ShardedThreadPool::start()
-{
-  ldout(cct,10) << "start" << dendl;
-
-  shardedpool_lock.Lock();
-  start_threads();
-  shardedpool_lock.Unlock();
-  ldout(cct,15) << "started" << dendl;
-}
-
-void ShardedThreadPool::stop()
-{
-  ldout(cct,10) << "stop" << dendl;
-  stop_threads = true;
-  assert(wq != NULL);
-  wq->return_waiting_threads();
-  for (vector<WorkThreadSharded*>::iterator p = threads_shardedpool.begin();
-       p != threads_shardedpool.end();
-       ++p) {
-    (*p)->join();
-    delete *p;
-  }
-  threads_shardedpool.clear();
-  ldout(cct,15) << "stopped" << dendl;
-}
-
-void ShardedThreadPool::pause()
-{
-  ldout(cct,10) << "pause" << dendl;
-  shardedpool_lock.Lock();
-  pause_threads = true;
-  assert(wq != NULL);
-  wq->return_waiting_threads();
-  while (num_threads != num_paused){
-    wait_cond.Wait(shardedpool_lock);
-  }
-  shardedpool_lock.Unlock();
-  ldout(cct,10) << "paused" << dendl; 
-}
-
-void ShardedThreadPool::pause_new()
-{
-  ldout(cct,10) << "pause_new" << dendl;
-  shardedpool_lock.Lock();
-  pause_threads = true;
-  assert(wq != NULL);
-  wq->return_waiting_threads();
-  shardedpool_lock.Unlock();
-  ldout(cct,10) << "paused_new" << dendl;
-}
-
-void ShardedThreadPool::unpause()
-{
-  ldout(cct,10) << "unpause" << dendl;
-  shardedpool_lock.Lock();
-  pause_threads = false;
-  shardedpool_cond.Signal();
-  shardedpool_lock.Unlock();
-  ldout(cct,10) << "unpaused" << dendl;
-}
-
-void ShardedThreadPool::drain()
-{
-  ldout(cct,10) << "drain" << dendl;
-  shardedpool_lock.Lock();
-  drain_threads = true;
-  assert(wq != NULL);
-  wq->return_waiting_threads();
-  while (num_threads != num_drained) {
-    wait_cond.Wait(shardedpool_lock);
-  }
-  drain_threads = false;
-  shardedpool_cond.Signal();
-  shardedpool_lock.Unlock();
-  ldout(cct,10) << "drained" << dendl;
-}
-