From 1b167ec5ad101ac44451381e26cc73ab5d67d2a1 Mon Sep 17 00:00:00 2001 From: lichao <lichao@aiotlink.com> Date: 星期一, 26 四月 2021 16:37:52 +0800 Subject: [PATCH] fix socket busy loop; del locked readall; refactor. --- src/shm_queue.cpp | 87 ------------------------------------------- 1 files changed, 0 insertions(+), 87 deletions(-) diff --git a/src/shm_queue.cpp b/src/shm_queue.cpp index face18b..86f0d91 100644 --- a/src/shm_queue.cpp +++ b/src/shm_queue.cpp @@ -21,91 +21,4 @@ namespace bhome_shm { -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); -} - -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::MQId ShmMsgQueue::NewId() -{ - static auto &id = GetData(); - return ++id; -} -// ShmMsgQueue memory usage: (320 + 16*length) bytes, length >= 2 -ShmMsgQueue::ShmMsgQueue(const MQId id, ShmType &segment, const int len) : - id_(id), - queue_(segment, MsgQIdToName(id_), AdjustMQLength(len), segment.get_segment_manager()) -{ -} - -ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) : - id_(NewId()), - queue_(segment, true, MsgQIdToName(id_), AdjustMQLength(len), segment.get_segment_manager()) -{ - if (!queue_.IsOk()) { - throw("error create msgq " + std::to_string(id_)); - } -} - -ShmMsgQueue::~ShmMsgQueue() {} - -bool ShmMsgQueue::Remove(SharedMemory &shm, const MQId id) -{ - Queue *q = Find(shm, id); - if (q) { - MsgI msg; - while (q->TryRead(msg)) { - msg.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 MQId remote_id, const MsgI &msg, OnSend const &onsend) -{ - Queue *remote = Find(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. - } // namespace bhome_shm -- Gitblit v1.8.0