From 4e5cb7960ce4e7e66d5190be67426aeca8b55c3d Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期五, 09 四月 2021 18:45:08 +0800
Subject: [PATCH] add heartbeat, not tested yet.
---
src/shm_queue.cpp | 133 +++++++++++++++++++-------------------------
1 files changed, 57 insertions(+), 76 deletions(-)
diff --git a/src/shm_queue.cpp b/src/shm_queue.cpp
index 421cebf..652ed5b 100644
--- a/src/shm_queue.cpp
+++ b/src/shm_queue.cpp
@@ -17,101 +17,82 @@
*/
#include "shm_queue.h"
-#include <boost/uuid/uuid_io.hpp>
-#include <boost/uuid/uuid_generators.hpp>
#include "bh_util.h"
+#include <boost/uuid/uuid_generators.hpp>
+#include <boost/uuid/uuid_io.hpp>
-namespace bhome_shm {
-using namespace bhome_msg;
+// 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); }
+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;
- }
+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()
+ShmMsgQueue::ShmMsgQueue(const MQId &id, ShmType &segment, const int len) :
+ Super(segment, MsgQIdToName(id), AdjustMQLength(len), segment.get_segment_manager()),
+ id_(id)
{
- Remove();
}
+ShmMsgQueue::ShmMsgQueue(ShmType &segment, const int len) :
+ ShmMsgQueue(NewId(), segment, len) {}
+
+ShmMsgQueue::~ShmMsgQueue() {}
+
+bool ShmMsgQueue::Remove(SharedMemory &shm, const MQId &id)
+{
+ return Super::Remove(shm, MsgQIdToName(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(); });
+}
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();});
+ Queue *remote = Find(shm, MsgQIdToName(remote_id));
+ return remote && remote->Write(msg, timeout_ms, [](const MsgI &msg) { msg.AddRef(); });
}
-// bool ShmMsgQueue::Send(const MQId &remote_id, const MsgI &msg, const int timeout_ms)
+// 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)
// {
-// Queue *remote = Find(MsgQIdToName(remote_id));
-// return remote && remote->Write(msg, timeout_ms, [](const MsgI&msg){msg.AddRef();});
+// if (Read(imsg, timeout_ms)) {
+// // DEFER1(imsg.Release(shm()););
+// return imsg.ParseHead(head);
+// } else {
+// return false;
+// }
// }
-
-bool ShmMsgQueue::Send(const MQId &remote_id, const BHMsg &data, const int timeout_ms)
-{
- MsgI msg;
- if(msg.Make(shm(), data)) {
- if(Send(remote_id, msg, timeout_ms)) {
- return true;
- } else {
- msg.Release(shm());
- }
- }
- return false;
-}
-
-/*
-bool ShmMsgQueue::Send(const MQId &remote_id, const void *data, const size_t size, const int timeout_ms)
-{
- // 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.
-
- MsgI msg;
- if(msg.BuildRequest(shm(), Id(), data, size)) {
- if(Send(remote_id, msg, timeout_ms)) {
- return true;
- } else {
- msg.Release(shm());
- }
- }
- return false;
-}
-//*/
-bool ShmMsgQueue::Recv(BHMsg &msg, const int timeout_ms)
-{
- MsgI imsg;
- if (Read(imsg, timeout_ms)) {
- DEFER1(imsg.Release(shm()););
- return imsg.Unpack(msg);
- } else {
- return false;
- }
-}
} // namespace bhome_shm
--
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