#include "macros.h"
#include <tlhelp32.h>

IMPLEMENT_THUNK( psapi, WINDOWS, BOOL, WINAPI, EnumProcesses, ( LPDWORD lpProcesses, DWORD cbSize, LPDWORD lpcbCopied ) )
{
	BOOL	fSuccess = FALSE;
	HANDLE	hSnapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );

	if ( IsValidHandle( hSnapshot ) )
	{
		PROCESSENTRY32	pe;

		if ( lpcbCopied )
			*lpcbCopied = 0;

		pe.dwSize = sizeof(pe);
		if ( Process32First( hSnapshot, &pe ) )
		{
			fSuccess = TRUE;

			while ( cbSize >= sizeof(*lpProcesses) )
			{
				*(lpProcesses++) = pe.th32ProcessID;
				if ( lpcbCopied )
					*lpcbCopied += sizeof(*lpProcesses);
				cbSize -= sizeof(*lpProcesses);

				if ( !Process32Next( hSnapshot, &pe ) )
					break;
			}
		}

		CloseHandle( hSnapshot );
	}
	else
		SetLastError( ERROR_INVALID_HANDLE );
	
	return fSuccess;
}