| | |
| | | #include <boost/uuid/uuid_generators.hpp> |
| | | #include <boost/uuid/uuid_io.hpp> |
| | | |
| | | // TODO !!! add garbage collection, and handshake with gc-center. |
| | | // smart pointer will NOT work if user crash. |
| | | // problem of process release mq: client query success; server exits; client send. |
| | | // client query success; server exits; client send. |
| | | |
| | | namespace bhome_shm |
| | | { |
| | | using namespace bhome_msg; |
| | |
| | | } |
| | | |
| | | ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) : |
| | | ShmMsgQueue(NewId(), segment, len) |
| | | ShmMsgQueue(NewId(), segment, len) {} |
| | | |
| | | ShmMsgQueue::~ShmMsgQueue() {} |
| | | |
| | | bool ShmMsgQueue::Remove(SharedMemory &shm, const MQId &id) |
| | | { |
| | | return Super::Remove(shm, MsgQIdToName(id)); |
| | | } |
| | | |
| | | ShmMsgQueue::~ShmMsgQueue() |
| | | ShmMsgQueue::Queue *ShmMsgQueue::FindRemote(SharedMemory &shm, const MQId &remote_id) |
| | | { |
| | | // It's not safe to remove, others may still holder pointers and write to it. |
| | | // TODO use smart_ptr or garbage collection. |
| | | //Remove(); |
| | | return Find(shm, MsgQIdToName(remote_id)); |
| | | } |
| | | |
| | | bool ShmMsgQueue::Send(SharedMemory &shm, const MQId &remote_id, const MsgI &msg, const int timeout_ms, OnSend const &onsend) |
| | | { |
| | | Queue *remote = Find(shm, MsgQIdToName(remote_id)); |
| | | return remote && remote->Write(msg, timeout_ms, [&onsend](const MsgI &msg) { onsend(); msg.AddRef(); }); |
| | | Queue *remote = FindRemote(shm, remote_id); |
| | | if (remote) { |
| | | if (onsend) { |
| | | return remote->Write(msg, timeout_ms, [&onsend](const MsgI &msg) { onsend(); msg.AddRef(); }); |
| | | } else { |
| | | return remote->Write(msg, timeout_ms, [](const MsgI &msg) { msg.AddRef(); }); |
| | | } |
| | | } else { |
| | | // SetLestError(eNotFound); |
| | | return false; |
| | | } |
| | | } |
| | | bool ShmMsgQueue::Send(SharedMemory &shm, const MQId &remote_id, const MsgI &msg, const int timeout_ms) |
| | | |
| | | bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQId &remote_id, const MsgI &msg, OnSend const &onsend) |
| | | { |
| | | Queue *remote = Find(shm, MsgQIdToName(remote_id)); |
| | | return remote && remote->Write(msg, timeout_ms, [](const MsgI &msg) { msg.AddRef(); }); |
| | | Queue *remote = FindRemote(shm, remote_id); |
| | | if (remote) { |
| | | if (onsend) { |
| | | return remote->TryWrite(msg, [&onsend](const MsgI &msg) { onsend(); msg.AddRef(); }); |
| | | } else { |
| | | return remote->TryWrite(msg, [](const MsgI &msg) { msg.AddRef(); }); |
| | | } |
| | | } else { |
| | | // SetLestError(eNotFound); |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | // 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. |
| | | |
| | | // bool ShmMsgQueue::Recv(MsgI &imsg, BHMsgHead &head, const int timeout_ms) |
| | | // { |
| | | // if (Read(imsg, timeout_ms)) { |
| | | // // DEFER1(imsg.Release(shm());); |
| | | // return imsg.ParseHead(head); |
| | | // } else { |
| | | // return false; |
| | | // } |
| | | // } |
| | | |
| | | } // namespace bhome_shm |