c 语言函数库

[qq_34974262]

为什么我在现在的c语言函数库里面找不到coreleft了，是不是被弃用了？有没有对应的函数啊

[sghcpt]

楼主，引用网上的对coreleft的说明：链接：http://www.cnblogs.com/amanlikethis/archive/2014/06/02/3764600.html
二、coreleft
函数来源：TC2.0
函数名: coreleft
功 能: 返回未使用内存的大小
返回值：未使用内存的大小
函数原型:
　　 unsigned long coreleft(void);（摘自TC2.0的alloc.h）
注意：此函数在VC6.0以及Ubuntu的gcc中均没有找到。

[yiyefangzhou24]

引用 1 楼 sghcpt 的回复:

楼主，引用网上的对coreleft的说明：链接：http://www.cnblogs.com/amanlikethis/archive/2014/06/02/3764600.html
二、coreleft
函数来源：TC2.0
函数名: coreleft
功 能: 返回未使用内存的大小
返回值：未使用内存的大小
函数原型:
　　 unsigned long coreleft(void);（摘自TC2.0的alloc.h）
注意：此函数在VC6.0以及Ubuntu的gcc中均没有找到。

++

[赵4老师]

GlobalMemoryStatus
The GlobalMemoryStatus function obtains information about the computer system's current usage of both physical and virtual memory.

VOID GlobalMemoryStatus(
LPMEMORYSTATUS lpBuffer // pointer to the memory status structure
);

Parameters
lpBuffer
Pointer to a MEMORYSTATUS structure. The GlobalMemoryStatus function stores information about current memory availability into this structure.
Return Values
This function does not return a value.

Remarks
You can use the GlobalMemoryStatus function to determine how much memory your application can allocate without severely impacting other applications.

The information returned by the GlobalMemoryStatus function is volatile. There is no guarantee that two sequential calls to this function will return the same information.

QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winbase.h.
Import Library: Use kernel32.lib.

See Also
Memory Management Overview, Memory Management Functions, GlobalMemoryStatusVlm, MEMORYSTATUS


MEMORYSTATUS
The MEMORYSTATUS structure contains information about the current state of both physical and virtual memory. The GlobalMemoryStatus function stores information into a MEMORYSTATUS structure.

typedef struct _MEMORYSTATUS { // mst
DWORD dwLength; // sizeof(MEMORYSTATUS)
DWORD dwMemoryLoad; // percent of memory in use
DWORD dwTotalPhys; // bytes of physical memory
DWORD dwAvailPhys; // free physical memory bytes
DWORD dwTotalPageFile; // bytes of paging file
DWORD dwAvailPageFile; // free bytes of paging file
DWORD dwTotalVirtual; // user bytes of address space
DWORD dwAvailVirtual; // free user bytes
} MEMORYSTATUS, *LPMEMORYSTATUS;

Members
dwLength
The size in bytes of the MEMORYSTATUS data structure. You do not need to set this member before calling the GlobalMemoryStatus function; the function sets it.
dwMemoryLoad
Specifies a number between 0 and 100 that gives a general idea of current memory utilization, in which 0 indicates no memory use and 100 indicates full memory use.
dwTotalPhys
Indicates the total number of bytes of physical memory.
dwAvailPhys
Indicates the number of bytes of physical memory available.
dwTotalPageFile
Indicates the total number of bytes that can be stored in the paging file. Note that this number does not represent the actual physical size of the paging file on disk.
dwAvailPageFile
Indicates the number of bytes available in the paging file.
dwTotalVirtual
Indicates the total number of bytes that can be described in the user mode portion of the virtual address space of the calling process.
dwAvailVirtual
Indicates the number of bytes of unreserved and uncommitted memory in the user mode portion of the virtual address space of the calling process.
QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winbase.h.

See Also
Memory Management Overview, Memory Management Structures, GlobalMemoryStatus