跟踪“记忆增长”一个过程 [英] Tracking the "memory growth" of a process

问题描述

我已经找到了一种非常简单的跟踪内存增长的方法。运行时的进程。它涉及一个头文件和一个

shell脚本。


这里是头文件：

//// //////头文件开始///////////////

#ifndef _VIRTMEMINFO_H_

#define _VIRTMEMINFO_H_


#include< stdio.h>

#include< stdlib.h>

#include< sys / types.h>

#include< unistd.h>


#define VMEM_BUF_SIZE 200

#define VMEM_ENV_VAR" VMEM_ENV_VAR"

#define CHK_SIZE \

{\

if（char * envVar = getenv（VMEM_ENV_VAR））\

{\

char buf [VMEM_BUF_SIZE]; \\ b
sprintf（buf，"％s％s％d％d％d％d"，envVar，\

__FILE __，_ _ _ 3，\

getpid（），getppid（），getpagesize（））; \

system（buf）; \

} \

}


#endif // _ VIRTMEMINFO_H_

/// ///////头文件结束///////////////

这里是shell脚本：

/ ///////// Shell-script开始///////////////

＃！/ bin / ksh

＃

＃$ 1：文件名

＃$ 2：Linenumber

＃$ 3：流程ID

＃$ 4：家长进程ID

＃$ 5：页面大小


echo"文件：$ 1，行：$ 2"

echo"页面大小为5美元

ps -elf |头-1; ps -elf | grep -w $ 3 | grep -w $ 4

echo" \ n\ n"

////////// Shell-script End ////// /////////

通过在我的代码中穿插上面的符号定义，我能够正确跟踪内存增长，但是我我无法看到内存收缩，如下面的编码示例所示。可以

有人解释原因吗？


////////// Code-snippet开始/////////// ////

#include" virtmeminfo.h"


main（）

{

CHK_SIZE

char * buf = new char [100000];

CHK_SIZE

delete [] buf;

CHK_SIZE

}

////////// Code-snippet End ///////////////


问候，

Bhat

解决方案

1：文件名

＃

2：Linenumber

＃

3：流程ID

＃

I have worked out a very simple method for tracking the "memory
growth" of a process at run time. It involves a header file and a
shell script.

Here''s the header file:
////////// Header File Begin ///////////////
#ifndef _VIRTMEMINFO_H_
#define _VIRTMEMINFO_H_

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

#define VMEM_BUF_SIZE 200
#define VMEM_ENV_VAR "VMEM_ENV_VAR"
#define CHK_SIZE \
{ \
if(char* envVar=getenv(VMEM_ENV_VAR)) \
{ \
char buf[VMEM_BUF_SIZE]; \
sprintf(buf, "%s %s %d %d %d %d", envVar, \
__FILE__, __LINE__, \
getpid(), getppid(), getpagesize()); \
system(buf); \
} \
}

#endif //_VIRTMEMINFO_H_
////////// Header File End ///////////////
Here''s the shell script:
////////// Shell-script Begin ///////////////
#!/bin/ksh
#
# $1: Filename
# $2: Linenumber
# $3: Process id
# $4: Parent process id
# $5: Page Size

echo "File: $1, Line: $2"
echo "Page size is $5"
ps -elf | head -1; ps -elf | grep -w $3 | grep -w $4
echo "\n\n"
////////// Shell-script End ///////////////
By interspersing the above symbolic definition within my code, I am
able to correctly track the memory "growth", but I am not able to see
the memory "shrinkage", as the following coding example shows. Can
someone explain why?

////////// Code-snippet Begin ///////////////
#include "virtmeminfo.h"

main()
{
CHK_SIZE
char *buf = new char[100000];
CHK_SIZE
delete [] buf;
CHK_SIZE
}
////////// Code-snippet End ///////////////

Regards,
Bhat

解决方案

1: Filename
#

2: Linenumber
#

3: Process id
#

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