托管代码中的内存泄漏 [英] Memory Leak in managed Code
问题描述
以下代码将创建内存泄漏!!!
使用System;
使用System.Diagnostics;
使用System.Data;
使用System.Data.SqlClient;
名称空间MemoryLeak
{
公共类RGCSqlConnection：System.IDisposable < br $>
{
SqlConnection m_connSQL;
public RGCSqlConnection（string dbName，string serverName）
{
string ServerName = serverName;
string DBName = dbName;
string m_strConn =" Connection Timeout = 45; Integrated Security = SSPI; Persist
安全信息=假;初始目录=" + dbName +" ;; Data Source =" +
serverName;
m_connSQL = new SqlConnection（m_strConn）;
m_connSQL.Open（）;
}
#region IDisposable会员
public void Dispose（）
{
m_connSQL.Dispose（ ）;
}
#endregion
}
公共类TestClass
{
int [] a = new int [100];
~TestClass（）
{
}
[STAThread]
static void Main（）
{
RGCSqlConnection conn = new RGCSqlConnection（" Northwind"，" localhost"）;
conn.Dispose（）;
TestClass t;
do
{
t = new TestClass（）;
}
while（true）;
}
}
}
The following code will create memory leaks!!!
using System;
using System.Diagnostics;
using System.Data;
using System.Data.SqlClient;
namespace MemoryLeak
{
public class RGCSqlConnection:System.IDisposable
{
SqlConnection m_connSQL;
public RGCSqlConnection(string dbName, string serverName)
{
string ServerName=serverName;
string DBName=dbName;
string m_strConn="Connection Timeout=45;Integrated Security=SSPI;Persist
Security Info=False;Initial Catalog=" + dbName + ";Data Source=" +
serverName;
m_connSQL= new SqlConnection(m_strConn);
m_connSQL.Open();
}
#region IDisposable Members
public void Dispose()
{
m_connSQL.Dispose();
}
#endregion
}
public class TestClass
{
int [] a=new int [100];
~TestClass()
{
}
[STAThread]
static void Main()
{
RGCSqlConnection conn = new RGCSqlConnection("Northwind","localhost");
conn.Dispose();
TestClass t;
do
{
t=new TestClass();
}
while (true);
}
}
}
推荐答案
James写道：
以下代码将创建内存泄漏!!!
使用System;
使用Sy stem.Diagnostics;
使用System.Data;
使用System.Data.SqlClient;
名称空间MemoryLeak
公共类RGCSqlConnection：System.IDisposable
{sqlConnection m_connSQL;
公共RGCSqlConnection（字符串dbName，字符串serverName）
{>字符串ServerName = serverName;
字符串DBName = dbName;
string m_strConn =" Connection Timeout = 45; Integrated Security = SSPI; Persist
Security Info = False; Initial Catalog =" + dbName +" ;; Data Source =" +
serverName;
m_connSQL = new SqlConnection（m_strConn）;
m_connSQL.Open（）;
}
#region IDisposable成员
public void Dispose（）
{
m_connSQL.Dispose（）;
}
公共课TestClass
{
int [] a = new int [100];
~TestClass（）
{
}
[STAThread]
static void Main（）
{RGCSqlConnection conn = new RGCSqlConnection（" Northwind"，" localhost"）;
conn.Dispose（）;
TestClass t;
做
{
t = new TestClass（）;
}
while（true）;
}
}
}
The following code will create memory leaks!!!
using System;
using System.Diagnostics;
using System.Data;
using System.Data.SqlClient;
namespace MemoryLeak
{
public class RGCSqlConnection:System.IDisposable
{
SqlConnection m_connSQL;
public RGCSqlConnection(string dbName, string serverName)
{
string ServerName=serverName;
string DBName=dbName;
string m_strConn="Connection Timeout=45;Integrated Security=SSPI;Persist
Security Info=False;Initial Catalog=" + dbName + ";Data Source=" +
serverName;
m_connSQL= new SqlConnection(m_strConn);
m_connSQL.Open();
}
#region IDisposable Members
public void Dispose()
{
m_connSQL.Dispose();
}
#endregion
}
public class TestClass
{
int [] a=new int [100];
~TestClass()
{
}
[STAThread]
static void Main()
{
RGCSqlConnection conn = new RGCSqlConnection("Northwind","localhost");
conn.Dispose();
TestClass t;
do
{
t=new TestClass();
}
while (true);
}
}
}
我不认为你对内存泄漏是什么有所了解。
调用dispose只会标记来自垃圾收集的对象，
对象将被处理掉，但不会马上处理掉。要测试内存泄漏的
，运行你的应用程序，然后关闭它，看看是否有资源返回堆中。
-
Rob Schieber
I don''t think that you have an understanding of what a memory leak is.
Calling dispose will just mark the object from Garbage Collection, the
objects will eventially get disposed of, but not right away. To test
for a memory leak, run your app, then close it and see if resources are
returned to the heap.
--
Rob Schieber
我理解你所说的话。
请运行代码并查看是否记忆力上升了。我谈到的内存泄漏问题
发生在while循环中
-James
" Rob SCHIEBER"写道：
I understand what you said.
Please run the code and see if the memory goes up. The memory leak problem
that I talked about happens in the while loop
-James
"Rob Schieber" wrote:
James写道：
以下代码会造成内存泄漏!!!
使用系统;
使用System.Diagnostics;
使用System.Data;
使用System.Data.SqlClient;
名称空间MemoryLeak
公共类RGCSqlConnection：System。 IDisposable
{sqlConnection m_connSQL;
公共RGCSqlConnection（字符串dbName，字符串serverName）
{>字符串ServerName = serverName;
字符串DBName = dbName;
string m_strConn =" Connection Timeout = 45; Integrated Security = SSPI; Persist
Security Info = False; Initial Catalog =" + dbName +" ;; Data Source =" +
serverName;
m_connSQL = new SqlConnection（m_strConn）;
m_connSQL.Open（）;
}
#region IDisposable成员
public void Dispose（）
{
m_connSQL.Dispose（）;
}
公共课TestClass
{
int [] a = new int [100];
~TestClass（）
{
}
[STAThread]
static void Main（）
{RGCSqlConnection conn = new RGCSqlConnection（" Northwind"，" localhost"）;
conn.Dispose（）;
TestClass t;
做
{
t = new TestClass（）;
}
while（true）;
}
}
}
The following code will create memory leaks!!!
using System;
using System.Diagnostics;
using System.Data;
using System.Data.SqlClient;
namespace MemoryLeak
{
public class RGCSqlConnection:System.IDisposable
{
SqlConnection m_connSQL;
public RGCSqlConnection(string dbName, string serverName)
{
string ServerName=serverName;
string DBName=dbName;
string m_strConn="Connection Timeout=45;Integrated Security=SSPI;Persist
Security Info=False;Initial Catalog=" + dbName + ";Data Source=" +
serverName;
m_connSQL= new SqlConnection(m_strConn);
m_connSQL.Open();
}
#region IDisposable Members
public void Dispose()
{
m_connSQL.Dispose();
}
#endregion
}
public class TestClass
{
int [] a=new int [100];
~TestClass()
{
}
[STAThread]
static void Main()
{
RGCSqlConnection conn = new RGCSqlConnection("Northwind","localhost");
conn.Dispose();
TestClass t;
do
{
t=new TestClass();
}
while (true);
}
}
}
我不认为你对内存泄漏是什么有所了解。
调用dispose只会标记来自垃圾收集的对象，
对象将被处理掉，但不会立即被处理掉。要测试内存泄漏，请运行您的应用程序，然后关闭它，看看是否有资源返回堆中。
-
Rob Schieber
I don''t think that you have an understanding of what a memory leak is.
Calling dispose will just mark the object from Garbage Collection, the
objects will eventially get disposed of, but not right away. To test
for a memory leak, run your app, then close it and see if resources are
returned to the heap.
--
Rob Schieber
" James" < JA *** @ discussions.microsoft.com>在消息中写道
news：58 ********************************** @ microsof t.com ...
"James" <Ja***@discussions.microsoft.com> wrote in message
news:58**********************************@microsof t.com...
以下代码将创建内存泄漏!!!
使用System;
使用System.Diagnostics;
使用System .Data;
使用System.Data.SqlClient;
名称空间MemoryLeak
公共类RGCSqlConnection：System.IDisposable
{S / S> SqlConnection m_connSQL;
public RGCSqlConnection（string dbName，string serverName）
{/>字符串ServerName = serverName;
string DBName = dbName;
string m_strConn =" Connection Timeout = 45;综合安全= SSPI;坚持
安全信息=假;初始目录=" + dbName +" ;; Data Source =" +
serverName;
m_connSQL = new SqlConnection（m_strConn）;
m_connSQL.Open（）;
}
#region IDisposable成员
public void Dispose（）
{
m_connSQL.Dispose（）;
}
公共课TestClass
{
int [] a = new int [100];
~TestClass（）
{
}
[STAThread]
static void Main（）
{RGCSqlConnection conn = new RGCSqlConnection（" Northwind"，" localhost"）;
conn.Dispose（）;
TestClass t;
做
{
t = new TestClass（）;
}
while（true）;
}
}
}
The following code will create memory leaks!!!
using System;
using System.Diagnostics;
using System.Data;
using System.Data.SqlClient;
namespace MemoryLeak
{
public class RGCSqlConnection:System.IDisposable
{
SqlConnection m_connSQL;
public RGCSqlConnection(string dbName, string serverName)
{
string ServerName=serverName;
string DBName=dbName;
string m_strConn="Connection Timeout=45;Integrated Security=SSPI;Persist
Security Info=False;Initial Catalog=" + dbName + ";Data Source=" +
serverName;
m_connSQL= new SqlConnection(m_strConn);
m_connSQL.Open();
}
#region IDisposable Members
public void Dispose()
{
m_connSQL.Dispose();
}
#endregion
}
public class TestClass
{
int [] a=new int [100];
~TestClass()
{
}
[STAThread]
static void Main()
{
RGCSqlConnection conn = new RGCSqlConnection("Northwind","localhost");
conn.Dispose();
TestClass t;
do
{
t=new TestClass();
}
while (true);
}
}
}
不，它不会，是什么让你这么想？
注意你不应该实现IDisposable，你的TestClass不应该
有一个析构函数（Finalize）。
Willy。
No it won''t, what makes you think that?
Note that you should not implement IDisposable and your TestClass should not
have a destructor (Finalize).
Willy.
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