4 #ifndef DMLITE_CPP_UTILS_POOLCONTAINER_H
5 #define DMLITE_CPP_UTILS_POOLCONTAINER_H
7 #include <boost/thread/mutex.hpp>
8 #include <boost/thread/condition.hpp>
9 #include <boost/date_time/posix_time/posix_time.hpp>
13 #include "../exceptions.h"
50 boost::mutex::scoped_lock lock(
mutex_);
52 while (
free_.size() > 0) {
59 if (
used_.size() > 0) {
60 syslog(LOG_USER | LOG_WARNING,
"%ld used elements from a pool not released on destruction!", (
long)
used_.size());
71 boost::mutex::scoped_lock lock(
mutex_);
76 std::string(
"No resources available"));
79 boost::system_time
const timeout = boost::get_system_time() + boost::posix_time::seconds(60);
82 if (boost::get_system_time() >= timeout) {
83 syslog(LOG_USER | LOG_WARNING,
"Timeout...%d seconds", 60);
90 if (
free_.size() > 0) {
110 boost::mutex::scoped_lock lock(
mutex_);
112 used_.insert(std::pair<E, unsigned>(e, 1));
123 boost::mutex::scoped_lock lock(
mutex_);
126 typename std::map<E, unsigned>::const_iterator i =
used_.find(e);
127 if (i ==
used_.end()) {
143 boost::mutex::scoped_lock lock(
mutex_);
145 unsigned remaining = --
used_[e];
168 typename std::map<E, unsigned>::const_iterator i =
used_.find(e);
169 if (i ==
used_.end())
179 boost::mutex::scoped_lock lock(
mutex_);
228 #endif // DMLITE_CPP_UTILS_POOLCONTAINER_H
Convenience class that releases a resource on destruction.
Definition: poolcontainer.h:206
virtual bool isValid(E)=0
Check it is still valid.
Implements a pool of whichever resource.
Definition: poolcontainer.h:38
void resize(int ns)
Definition: poolcontainer.h:176
PoolContainer(PoolElementFactory< E > *factory, int n)
Definition: poolcontainer.h:43
virtual void destroy(E)=0
Destroys an element.
#define DMLITE_SYSERR(e)
Definition: errno.h:32
boost::mutex mutex_
Definition: poolcontainer.h:200
unsigned refCount(E e)
Count the number of instances.
Definition: poolcontainer.h:166
E acquire(E e)
Increases the reference count of a resource.
Definition: poolcontainer.h:121
std::map< E, unsigned > used_
Definition: poolcontainer.h:197
Base exception class.
Definition: exceptions.h:17
PoolContainer< E > & pool_
Definition: poolcontainer.h:223
virtual ~PoolElementFactory()
Destructor.
Definition: poolcontainer.h:23
E acquire(bool block=true)
Acquires a free resource.
Definition: poolcontainer.h:65
std::deque< E > free_
Definition: poolcontainer.h:196
~PoolGrabber()
Definition: poolcontainer.h:213
virtual E create()=0
Creates an element.
E element_
Definition: poolcontainer.h:224
unsigned release(E e)
Definition: poolcontainer.h:141
int max_
Definition: poolcontainer.h:192
~PoolContainer()
Destructor.
Definition: poolcontainer.h:48
int freeSlots_
Definition: poolcontainer.h:198
boost::condition_variable available_
Definition: poolcontainer.h:201
Definition: poolcontainer.h:20
PoolElementFactory< E > * factory_
Definition: poolcontainer.h:194
PoolGrabber(PoolContainer< E > &pool, bool block=true)
Definition: poolcontainer.h:208