From d3e7f93e69cb24c766292d8780e745caf24d42a8 Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期四, 25 三月 2021 18:30:51 +0800
Subject: [PATCH] add ref count.
---
src/msg.h | 16 +++++-----------
1 files changed, 5 insertions(+), 11 deletions(-)
diff --git a/src/msg.h b/src/msg.h
index ec17aaf..44c961f 100644
--- a/src/msg.h
+++ b/src/msg.h
@@ -59,7 +59,7 @@
int Get() { Guard lk(mutex_); return num_; }
private:
Mutex mutex_;
- int num_ = 0;
+ int num_ = 1;
};
class Msg {
@@ -67,13 +67,6 @@
offset_ptr<void> ptr_;
offset_ptr<RefCount> count_;
public:
- class CountGuard : private boost::noncopyable {
- Msg &msg_;
- public:
- CountGuard(Msg &msg) : msg_(msg) { msg_.AddRef(); }
- ~CountGuard() { msg_.RemoveRef(); }
- };
-
Msg(void *p=0, RefCount *c=0):ptr_(p), count_(c) {}
void swap(Msg &a) { std::swap(ptr_, a.ptr_); std::swap(count_, a.count_); }
@@ -84,9 +77,10 @@
// Msg & operator = (Msg &&a) { Msg(std::move(a)).swap(*this); }
template <class T = void> T *get() { return static_cast<T*>(ptr_.get()); }
- int AddRef() const { return count_ ? count_->Inc() : 0; }
- int RemoveRef() const{ return count_ ? count_->Dec() : 0; }
- int Count() const { return count_ ? count_->Get() : 0; }
+ int AddRef() const { return IsCounted() ? count_->Inc() : 1; }
+ int RemoveRef() const{ return IsCounted() ? count_->Dec() : 0; }
+ int Count() const{ return IsCounted() ? count_->Get() : 1; }
+ bool IsCounted() const { return static_cast<bool>(count_); }
bool Build(SharedMemory &shm, const MQId &src_id, const void *p, const size_t size, const bool refcount);
void FreeFrom(SharedMemory &shm);
};
--
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