| | |
| | | |
| | | } // namespace |
| | | |
| | | ShmMsgQueue::MQId ShmMsgQueue::NewId() |
| | | { |
| | | static auto &id = GetData(); |
| | | return (++id) * 10; |
| | | } |
| | | |
| | | ShmMsgQueue::ShmMsgQueue(const MQId id, ShmType &segment, const int len) : |
| | | ShmMsgQueue::ShmMsgQueue(ShmType &segment, const MQId id, Mode mode) : |
| | | id_(id), |
| | | queue_(segment, MsgQIdToName(id_), len, segment.get_segment_manager()) |
| | | queue_(segment, MsgQIdToName(id_), mode) |
| | | { |
| | | } |
| | | |
| | | ShmMsgQueue::ShmMsgQueue(const MQId id, const bool create_or_else_find, ShmType &segment, const int len) : |
| | | id_(id), |
| | | queue_(segment, create_or_else_find, MsgQIdToName(id_), len, segment.get_segment_manager()) |
| | | { |
| | | if (!queue_.IsOk()) { |
| | | throw("error create/find msgq " + std::to_string(id_)); |
| | | } |
| | | } |
| | | ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) : |
| | | ShmMsgQueue(NewId(), true, segment, len) {} |
| | | ShmMsgQueue::ShmMsgQueue(const int64_t abs_addr, ShmType &segment, const MQId id) : |
| | | id_(id), queue_(abs_addr, segment, MsgQIdToName(id_)) {} |
| | | |
| | | ShmMsgQueue::~ShmMsgQueue() {} |
| | | |
| | | ShmMsgQueue::Mutex &ShmMsgQueue::GetMutex(const MQId id) |
| | | { |
| | | static std::unordered_map<MQId, std::shared_ptr<Mutex>> imm; |
| | | |
| | | static std::mutex mtx; |
| | | std::lock_guard<std::mutex> lock(mtx); |
| | | auto pos = imm.find(id); |
| | | if (pos == imm.end()) { |
| | | pos = imm.emplace(id, new Mutex(id)).first; |
| | | // pos = imm.emplace(id, new Mutex()).first; |
| | | } |
| | | return *pos->second; |
| | | } |
| | | bool ShmMsgQueue::Remove(SharedMemory &shm, const MQId id) |
| | | { |
| | | Queue *q = Find(shm, id); |
| | | if (q) { |
| | | MsgI msg; |
| | | while (q->TryRead(msg.OffsetRef())) { |
| | | msg.Release(); |
| | | 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)); |
| | |
| | | return Shmq::Find(shm, MsgQIdToName(remote_id)); |
| | | } |
| | | |
| | | bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQId remote_id, MsgI msg) |
| | | bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQInfo &remote, const RawData val) |
| | | { |
| | | bool r = false; |
| | | try { |
| | | ShmMsgQueue dest(remote_id, false, shm, 1); |
| | | msg.AddRef(); |
| | | DEFER1(if (!r) { msg.Release(); }); |
| | | |
| | | Guard lock(GetMutex(remote_id)); |
| | | r = dest.queue().TryWrite(msg.Offset()); |
| | | ShmMsgQueue dest(remote.offset_, shm, remote.id_); |
| | | return dest.queue().TryWrite(val); |
| | | } catch (...) { |
| | | // SetLastError(eNotFound, "remote not found"); |
| | | return false; |
| | | } |
| | | return r; |
| | | } |
| | | |
| | | // Test shows that in the 2 cases: |
| | | // 1) build msg first, then find remote queue; |
| | | // 2) find remote queue first, then build msg; |
| | | // 1 is about 50% faster than 2, maybe cache related. |