From db322f33ba13592f2492317e3f1a070454c97059 Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期四, 13 五月 2021 19:34:46 +0800
Subject: [PATCH] center alloc all msgs.
---
src/shm_msg_queue.cpp | 62 +++++++++++++++++++++----------
1 files changed, 42 insertions(+), 20 deletions(-)
diff --git a/src/shm_msg_queue.cpp b/src/shm_msg_queue.cpp
index cd8cd66..d96c511 100644
--- a/src/shm_msg_queue.cpp
+++ b/src/shm_msg_queue.cpp
@@ -34,33 +34,55 @@
ShmMsgQueue::MQId ShmMsgQueue::NewId()
{
static auto &id = GetData();
- return ++id;
+ return (++id) * 10;
}
-// 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())
+ queue_(segment, MsgQIdToName(id_), 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())
+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 msgq " + std::to_string(id_));
+ throw("error create/find msgq " + std::to_string(id_));
}
}
+ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) :
+ ShmMsgQueue(NewId(), true, segment, len) {}
ShmMsgQueue::~ShmMsgQueue() {}
+
+#ifndef BH_USE_ATOMIC_Q
+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;
+}
+#endif
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).Release();
+ }
}
}
return Shmq::Remove(shm, MsgQIdToName(id));
@@ -71,18 +93,18 @@
return Shmq::Find(shm, MsgQIdToName(remote_id));
}
-bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQId remote_id, MsgI msg)
+bool ShmMsgQueue::TrySend(SharedMemory &shm, const MQId remote_id, int64_t val)
{
- Queue *remote = Find(shm, remote_id);
- bool r = false;
- if (remote) {
- msg.AddRef();
- r = remote->TryWrite(msg.Offset());
- if (!r) {
- msg.Release();
- }
+ try {
+ ShmMsgQueue dest(remote_id, false, shm, 1);
+#ifndef BH_USE_ATOMIC_Q
+ Guard lock(GetMutex(remote_id));
+#endif
+ return dest.queue().TryWrite(val);
+ } catch (...) {
+ // SetLastError(eNotFound, "remote not found");
+ return false;
}
- return r;
}
// Test shows that in the 2 cases:
--
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