From 02ba913dc7bb5d711471b27f2ea23a897d0f2e28 Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期五, 23 四月 2021 15:34:26 +0800
Subject: [PATCH] bind msgi to shm, change offset_ptr to abs offset.
---
src/shm_queue.cpp | 48 ++++++++++++++++++++++++++++--------------------
1 files changed, 28 insertions(+), 20 deletions(-)
diff --git a/src/shm_queue.cpp b/src/shm_queue.cpp
index 652ed5b..df9ce1f 100644
--- a/src/shm_queue.cpp
+++ b/src/shm_queue.cpp
@@ -21,11 +21,6 @@
#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;
@@ -69,30 +64,43 @@
return Super::Remove(shm, MsgQIdToName(id));
}
+ShmMsgQueue::Queue *ShmMsgQueue::FindRemote(SharedMemory &shm, const MQId &remote_id)
+{
+ 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
--
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