我知道如何使用GlobalMemoryStatusEx获取系统内存使用情况，但它只告诉我整个操作系统正在使用的内存。
我真的希望我的程序报告它单独分配和使用了多少内存。
在我的Delphi 2009程序中，是否有任何方式调用Windows函数或某些FastMM功能，以查找仅由我的程序分配的内存？
重新审视我的问题，我现在已将我的接受答案更改为@apenwarr的GetMemoryManagerState答案。 它生成与我曾经使用的GetHeapStatus函数（现已弃用）相同的结果，而GetProcessMemoryInfo.WorkingSetSize给出了非常不同的结果。
你可以在不使用任何直接的Win32调用的情况下，从Delphi运行时获得有用的内存使用信息：
unit X;
uses FastMM4; //include this or method will return 0.
....
function GetMemoryUsed: UInt64;
var
st: TMemoryManagerState;
sb: TSmallBlockTypeState;
begin
GetMemoryManagerState(st);
result := st.TotalAllocatedMediumBlockSize
+ st.TotalAllocatedLargeBlockSize;
for sb in st.SmallBlockTypeStates do begin
result := result + sb.UseableBlockSize * sb.AllocatedBlockCount;
end;
end;
这种方法最好的一点是它被严格地跟踪：当你分配内存时，它会增加，而当你释放内存时，它会立即减少相同数量。我在每次运行单元测试之前和之后使用它，这样我就可以知道哪个测试正在泄漏内存（例如）。
想要知道程序正在使用多少内存吗？这个 Delphi 函数可以解决问题。
uses psAPI;
{...}
function CurrentProcessMemory: Cardinal;
var
MemCounters: TProcessMemoryCounters;
begin
MemCounters.cb := SizeOf(MemCounters);
if GetProcessMemoryInfo(GetCurrentProcess,
@MemCounters,
SizeOf(MemCounters)) then
Result := MemCounters.WorkingSetSize
else
RaiseLastOSError;
end;
我不确定我是从哪里学到这个基础知识的，但我添加了一些更好的错误处理，并将其制作成了一个函数。WorkingSetSize是当前使用的内存量。您可以使用类似的代码来获取当前进程（或任何进程）的其他值。您需要在uses语句中包含psAPI。
PROCESS_MEMORY_COUNTERS记录包括：
您可以在任务管理器或进程资源管理器中找到所有这些值。
function ProcessMemory: longint;
var
pmc: PPROCESS_MEMORY_COUNTERS;
cb: Integer;
begin
// Get the used memory for the current process
cb := SizeOf(TProcessMemoryCounters);
GetMem(pmc, cb);
pmc^.cb := cb;
if GetProcessMemoryInfo(GetCurrentProcess(), pmc, cb) then
Result:= Longint(pmc^.WorkingSetSize);
FreeMem(pmc);
end;
将Gant编写的C++代码转换为Delphi控制台应用程序:
program MemoryProcessCMD;
{* Based in Gant(https://stackoverflow.com/users/12460/gant) code*}
{$APPTYPE CONSOLE}
{$R *.res}
uses
System.SysUtils,
psapi,
Windows;
procedure PrintMemoryInfo(processID: DWORD);
var
hProcess: THandle;
pmc: PROCESS_MEMORY_COUNTERS;
total: DWORD;
begin
// Print the process identifier.
Writeln(format('Process ID: %d', [processID]));
// Print information about the memory usage of the process.
hProcess := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ, FALSE,
processID);
if (hProcess = 0) then
begin
exit;
end;
if (GetProcessMemoryInfo(hProcess, @pmc, SizeOf(pmc))) then
begin
Writeln(format(#09'PageFaultCount: 0x%.8X', [pmc.PageFaultCount]));
Writeln(format(#09'PeakWorkingSetSize: 0x%.8X', [pmc.PeakWorkingSetSize]));
Writeln(format(#09'WorkingSetSize: 0x%.8X', [pmc.WorkingSetSize]));
Writeln(format(#09'QuotaPeakPagedPoolUsage: 0x%.8X',
[pmc.QuotaPeakPagedPoolUsage]));
Writeln(format(#09'QuotaPagedPoolUsage: 0x%.8X',
[pmc.QuotaPagedPoolUsage]));
Writeln(format(#09'QuotaPeakNonPagedPoolUsage: 0x%.8X',
[pmc.QuotaPeakNonPagedPoolUsage]));
Writeln(format(#09'QuotaNonPagedPoolUsage: 0x%.8X',
[pmc.QuotaNonPagedPoolUsage]));
Writeln(format(#09'PagefileUsage: 0x%.8X', [pmc.PagefileUsage]));
Writeln(format(#09'PeakPagefileUsage: 0x%.8X', [pmc.PeakPagefileUsage]));
Writeln(format(#09'PagefileUsage: 0x%.8X', [pmc.PagefileUsage]));
end;
CloseHandle(hProcess);
end;
var
aProcesses: array [0 .. 1024] of DWORD;
cbNeeded, cProcesses: DWORD;
i: Integer;
begin
try
// Get the list of process identifiers.
if (not EnumProcesses(@aProcesses, SizeOf(aProcesses), &cbNeeded)) then
halt(1);
// Calculate how many process identifiers were returned.
cProcesses := cbNeeded div SizeOf(DWORD);
// Print the memory usage for each process
for i := 0 to cProcesses - 1 do
begin
PrintMemoryInfo(aProcesses[i]);
end;
except
on E: Exception do
Writeln(E.ClassName, ': ', E.Message);
end;
end.
对于 Win32 API 的方式，您需要使用 GetProcessMemoryInfo 函数。这里有一个来自 MSDN 页面 的示例，但代码是用 C++ 编写的。我认为您也可以将其转换为 Delphi。您要查找的可能是“工作集大小”。
#include <windows.h>
#include <stdio.h>
#include <psapi.h>
void PrintMemoryInfo( DWORD processID )
{
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
// Print the process identifier.
printf( "\nProcess ID: %u\n", processID );
// Print information about the memory usage of the process.
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
if (NULL == hProcess)
return;
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
{
printf( "\tPageFaultCount: 0x%08X\n", pmc.PageFaultCount );
printf( "\tPeakWorkingSetSize: 0x%08X\n",
pmc.PeakWorkingSetSize );
printf( "\tWorkingSetSize: 0x%08X\n", pmc.WorkingSetSize );
printf( "\tQuotaPeakPagedPoolUsage: 0x%08X\n",
pmc.QuotaPeakPagedPoolUsage );
printf( "\tQuotaPagedPoolUsage: 0x%08X\n",
pmc.QuotaPagedPoolUsage );
printf( "\tQuotaPeakNonPagedPoolUsage: 0x%08X\n",
pmc.QuotaPeakNonPagedPoolUsage );
printf( "\tQuotaNonPagedPoolUsage: 0x%08X\n",
pmc.QuotaNonPagedPoolUsage );
printf( "\tPagefileUsage: 0x%08X\n", pmc.PagefileUsage );
printf( "\tPeakPagefileUsage: 0x%08X\n",
pmc.PeakPagefileUsage );
}
CloseHandle( hProcess );
}
int main( )
{
// Get the list of process identifiers.
DWORD aProcesses[1024], cbNeeded, cProcesses;
unsigned int i;
if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) )
return 1;
// Calculate how many process identifiers were returned.
cProcesses = cbNeeded / sizeof(DWORD);
// Print the memory usage for each process
for ( i = 0; i < cProcesses; i++ )
PrintMemoryInfo( aProcesses[i] );
return 0;
}