QoreThreadLocalStorage.h
/* -*- mode: c++; indent-tabs-mode: nil -*- */
/*
QoreThreadLocalStorage.h
Qore Programming Language
Copyright (C) 2003 - 2021 Qore Technologies, s.r.o.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
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and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
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DEALINGS IN THE SOFTWARE.
Note that the Qore library is released under a choice of three open-source
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*/
#ifndef _QORE_QORETHREADLOCALSTORAGE_H
#define _QORE_QORETHREADLOCALSTORAGE_H
#include <cassert>
#include <pthread.h>
template<typename T>
class QoreThreadLocalStorage {
protected:
pthread_key_t key;
DLLLOCAL QoreThreadLocalStorage(const QoreThreadLocalStorage&);
DLLLOCAL QoreThreadLocalStorage& operator=(const QoreThreadLocalStorage&);
public:
DLLLOCAL QoreThreadLocalStorage() {
create();
}
DLLLOCAL ~QoreThreadLocalStorage() {
destroy();
}
DLLLOCAL void create() {
pthread_key_create(&key, 0);
}
DLLLOCAL void destroy() {
pthread_key_delete(key);
}
DLLLOCAL T *get() {
return (T *)pthread_getspecific(key);
}
DLLLOCAL void set(T *ptr) {
#ifndef DEBUG
pthread_setspecific(key, (void *)ptr);
#else
// make sure we are not overwriting data
assert(!ptr || !pthread_getspecific(key));
int rc = pthread_setspecific(key, (void *)ptr);
assert(!rc);
#endif
}
};
#endif // _QORE_QORETHREADLOCALSTORAGE_H
QoreThreadLocalStorage
provides access to thread-local storage
Definition: QoreThreadLocalStorage.h:44
QoreThreadLocalStorage::operator=
DLLLOCAL QoreThreadLocalStorage & operator=(const QoreThreadLocalStorage &)
this function is not implemented; it is here as a private function in order to prohibit it from being...
QoreThreadLocalStorage::QoreThreadLocalStorage
DLLLOCAL QoreThreadLocalStorage()
creates the key
Definition: QoreThreadLocalStorage.h:57
QoreThreadLocalStorage::destroy
DLLLOCAL void destroy()
destroys the key
Definition: QoreThreadLocalStorage.h:72
QoreThreadLocalStorage::create
DLLLOCAL void create()
creates the key
Definition: QoreThreadLocalStorage.h:67
QoreThreadLocalStorage::~QoreThreadLocalStorage
DLLLOCAL ~QoreThreadLocalStorage()
destroys the key
Definition: QoreThreadLocalStorage.h:62
QoreThreadLocalStorage::key
pthread_key_t key
the actual thread local storage key wrapped in this class
Definition: QoreThreadLocalStorage.h:47