/*
 * =====================================================================================
 *
 *       Filename:  shm_msg_queue.cpp
 *
 *    Description:  
 *
 *        Version:  1.0
 *        Created:  2021年04月26日 16时25分05秒
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Li Chao (), lichao@aiotlink.com
 *   Organization:  
 *
 * =====================================================================================
 */
#include "shm_msg_queue.h"

using namespace bhome_msg;
using namespace boost::interprocess;

namespace
{
std::string MsgQIdToName(const ShmMsgQueue::MQId id)
{
	char buf[40] = "mqOx";
	int n = sprintf(buf + 4, "%lx", id);
	return std::string(buf, n + 4);
}

} // namespace

ShmMsgQueue::ShmMsgQueue(ShmType &segment, const MQId id, Mode mode) :
    id_(id),
    queue_(segment, MsgQIdToName(id_), mode)
{
}
ShmMsgQueue::ShmMsgQueue(const int64_t abs_addr, ShmType &segment, const MQId id) :
    id_(id), queue_(abs_addr, segment, MsgQIdToName(id_)) {}

ShmMsgQueue::~ShmMsgQueue() {}

bool ShmMsgQueue::Remove(SharedMemory &shm, const MQId id)
{
	Queue *q = Find(shm, id);
	if (q) {
		RawData val = 0;
		while (q->TryRead(val)) {
			if (IsCmd(val)) {
				LOG_DEBUG() << "clsing queue " << id << ", has a cmd" << DecodeCmd(val);
			} else {
				MsgI(val, shm).Release();
			}
		}
	}
	return Shmq::Remove(shm, MsgQIdToName(id));
}

ShmMsgQueue::Queue *ShmMsgQueue::Find(SharedMemory &shm, const MQId remote_id)
{
	return Shmq::Find(shm, MsgQIdToName(remote_id));
}

bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQInfo &remote, const RawData val)
{
	try {
		ShmMsgQueue dest(remote.offset_, shm, remote.id_);
		return dest.queue().TryWrite(val);
	} catch (...) {
		// SetLastError(eNotFound, "remote not found");
		return false;
	}
}