[thirdparty/squid.git] / src / security / LockingPointer.h

#ifndef SQUID_SRC_SECURITY_LOCKINGPOINTER_H
#define SQUID_SRC_SECURITY_LOCKINGPOINTER_H

#include "base/TidyPointer.h"

namespace Security
{

/**
  * Add SSL locking (a.k.a. reference counting) to TidyPointer
  */
template <typename T, void (*DeAllocator)(T *t), int lock>
class LockingPointer: public TidyPointer<T, DeAllocator>
{
public:
    typedef TidyPointer<T, DeAllocator> Parent;

    LockingPointer(T *t = nullptr): Parent(t) {}

    void resetAndLock(T *t) {
        if (t != this->get()) {
            this->reset(t);
#if USE_OPENSSL
            if (t)
                CRYPTO_add(&t->references, 1, lock);
#elif USE_GNUTLS
            // XXX: GnuTLS does not provide locking ?
#else
            assert(false);
#endif
        }
    }
};

} // namespace Security

#endif /* SQUID_SRC_SECURITY_LOCKINGPOINTER_H */
Commit	Line	Data
f97700a0 AJ	1	#ifndef SQUID_SRC_SECURITY_LOCKINGPOINTER_H
	2	#define SQUID_SRC_SECURITY_LOCKINGPOINTER_H
	3
	4	#include "base/TidyPointer.h"
	5
	6	namespace Security
	7	{
	8
	9	/**
	10	* Add SSL locking (a.k.a. reference counting) to TidyPointer
	11	*/
	12	template <typename T, void (DeAllocator)(T t), int lock>
	13	class LockingPointer: public TidyPointer<T, DeAllocator>
	14	{
	15	public:
	16	typedef TidyPointer<T, DeAllocator> Parent;
	17
	18	LockingPointer(T *t = nullptr): Parent(t) {}
	19
	20	void resetAndLock(T *t) {
	21	if (t != this->get()) {
	22	this->reset(t);
	23	#if USE_OPENSSL
	24	if (t)
	25	CRYPTO_add(&t->references, 1, lock);
	26	#elif USE_GNUTLS
	27	// XXX: GnuTLS does not provide locking ?
	28	#else
	29	assert(false);
	30	#endif
	31	}
	32	}
	33	};
	34
	35	} // namespace Security
	36
	37	#endif /* SQUID_SRC_SECURITY_LOCKINGPOINTER_H */