From 238b3cab1bc1c6b2f1b2f03df3a78c8d1db6c685 Mon Sep 17 00:00:00 2001
From: liuxiaolong <liuxiaolong@aiotlink.com>
Date: 星期日, 25 四月 2021 15:53:08 +0800
Subject: [PATCH] 重新生成pb.go
---
box/center_main.cc | 88 +++++++++++++++++++++++++++++++++++++-------
1 files changed, 74 insertions(+), 14 deletions(-)
diff --git a/box/center_main.cc b/box/center_main.cc
index 5baa409..fdda2cd 100644
--- a/box/center_main.cc
+++ b/box/center_main.cc
@@ -20,35 +20,95 @@
#include "center.h"
#include "defs.h"
#include "signalhandle.h"
+#include <boost/interprocess/sync/named_mutex.hpp>
#include <chrono>
#include <thread>
using namespace std::chrono_literals;
+using namespace bhome_shm;
+namespace
+{
+const std::string kCenterRunningFlag = "bh_center_single_flag_0";
+
+class InstanceFlag
+{
+
+public:
+ InstanceFlag(SharedMemory &shm, const std::string &name) :
+ shm_(shm), name_(name), run_(false) {}
+ ~InstanceFlag() { Stop(); }
+
+ bool TryStartAsFirstInstance()
+ {
+ if (run_) {
+ return true;
+ }
+
+ auto mtx(shm_.FindOrCreate<Mutex>(name_ + "_mutex_0"));
+ auto time_stamp(shm_.FindOrCreate<int64_t>(name_ + "_timestamp_0", 0));
+
+ if (mtx && time_stamp) {
+ Guard lock(*mtx);
+ auto now = NowSec();
+ // printf("old: %ld, now: %ld\n", *time_stamp, now);
+ if (now > *time_stamp + 10) {
+ *time_stamp = now;
+ auto UpdateTime = [this, time_stamp]() {
+ while (run_) {
+ std::this_thread::sleep_for(1s);
+ *time_stamp = NowSec();
+ }
+ };
+ run_.store(true);
+ std::thread(UpdateTime).swap(worker_);
+ return true;
+ }
+ }
+ return false;
+ }
+
+private:
+ void Stop()
+ {
+ run_.store(false);
+ if (worker_.joinable()) {
+ worker_.join();
+ }
+ }
+
+ std::thread worker_;
+ SharedMemory &shm_;
+ std::string name_;
+ std::atomic<bool> run_;
+};
+
+} // namespace
int center_main(int argc, const char *argv[])
{
+ auto &shm = BHomeShm();
+ GlobalInit(shm);
+
AppArg args(argc, argv);
if (args.Has("remove")) {
- BHomeShm().Remove();
+ shm.Remove();
return 0;
}
- bool run = true;
- auto showStatus = [&]() {
- auto init = BHomeShm().get_free_memory();
- uint64_t idx = 0;
- while (run) {
- std::this_thread::sleep_for(1s);
- printf("%8d shared memory: avail : %ld / %ld\n", ++idx, BHomeShm().get_free_memory(), init);
- }
- };
- std::thread t(showStatus);
+ InstanceFlag inst(shm, kCenterRunningFlag);
+ if (!inst.TryStartAsFirstInstance()) {
+ printf("another instance is running, exit.\n");
+ return 0;
+ }
- BHCenter center(BHomeShm());
+ if (args.Has("daemon") || args.Has("d")) {
+ int r = daemon(0, 0); // TODO center control msg to close itself.
+ }
+
+ BHCenter center(shm);
center.Start();
+
printf("center started ...\n");
WaitForSignals({SIGINT, SIGTERM});
- run = false;
- t.join();
return 0;
}
--
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