PresenceDetection/Util/HttpClientHelpers.h

#ifndef UTIL_HTTPCLIENTHELPERS_H
#define UTIL_HTTPCLIENTHELPERS_H

#include <memory>
#include <mutex>
#include <vector>
#include <openssl/crypto.h>


namespace PresenceDetection {
namespace Util {

static std::vector<std::shared_ptr<std::mutex> > g_mutexes;

static void LockCallback(int mode, int type, const char* /*file*/, int /*line*/)
{
	if (mode & CRYPTO_LOCK)
		g_mutexes[type]->lock();
	else
		g_mutexes[type]->unlock();
}

static unsigned long ThreadId(void)
{
	return (unsigned long)pthread_self();
}

static void InitializeLocks(void)
{
	g_mutexes.resize(CRYPTO_num_locks());
	for (int i = 0; i < CRYPTO_num_locks(); ++i)
		g_mutexes[i] = std::shared_ptr<std::mutex>(new std::mutex());

	CRYPTO_set_id_callback(ThreadId);
	CRYPTO_set_locking_callback(LockCallback);
}

static void FreeLocks(void)
{
	CRYPTO_set_locking_callback(NULL);
}

} // namespace Util
} // namespace PresenceDetection

#endif // UTIL_HTTPCLIENTHELPERS_H