From 34cd75f77d0ca94dbdba4e6cc9451fe4d33e78b3 Mon Sep 17 00:00:00 2001 From: lichao <lichao@aiotlink.com> Date: 星期三, 19 五月 2021 19:14:13 +0800 Subject: [PATCH] add api BHQueryProcs. --- src/shm_queue.cpp | 76 -------------------------------------- 1 files changed, 0 insertions(+), 76 deletions(-) diff --git a/src/shm_queue.cpp b/src/shm_queue.cpp index 521f773..86f0d91 100644 --- a/src/shm_queue.cpp +++ b/src/shm_queue.cpp @@ -18,83 +18,7 @@ #include "shm_queue.h" #include "bh_util.h" -#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; -using namespace boost::interprocess; -using namespace boost::uuids; - -namespace -{ -std::string MsgQIdToName(const MQId &id) { return "shmq" + to_string(id); } -// MQId EmptyId() { return nil_uuid(); } -MQId NewId() { return random_generator()(); } -const int AdjustMQLength(const int len) -{ - const int kMaxLength = 10000; - const int kDefaultLen = 12; - if (len <= 0) { - return kDefaultLen; - } else if (len < kMaxLength) { - return len; - } else { - return kMaxLength; - } -} - -} // namespace - -// ShmMsgQueue memory usage: (320 + 16*length) bytes, length >= 2 -ShmMsgQueue::ShmMsgQueue(const MQId &id, ShmType &segment, const int len) : - Super(segment, MsgQIdToName(id), AdjustMQLength(len), segment.get_segment_manager()), - id_(id) -{ -} - -ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) : - ShmMsgQueue(NewId(), segment, len) -{ -} - -ShmMsgQueue::~ShmMsgQueue() -{ - // It's not safe to remove, others may still holder pointers and write to it. - // TODO use smart_ptr or garbage collection. - //Remove(); -} - -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(); }); -} -bool ShmMsgQueue::Send(SharedMemory &shm, const MQId &remote_id, const MsgI &msg, const int timeout_ms) -{ - Queue *remote = Find(shm, MsgQIdToName(remote_id)); - return remote && remote->Write(msg, timeout_ms, [](const MsgI &msg) { msg.AddRef(); }); -} - -// 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 -- Gitblit v1.8.0