1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 #include "macros.h"
23 #include <tlhelp32.h>
24 
25 IMPLEMENT_THUNK( psapi, WINDOWS, BOOL, WINAPI, EnumProcesses, ( LPDWORD lpProcesses, DWORD cbSize, LPDWORD lpcbCopied ) )
26 {
27 	BOOL	fSuccess = FALSE;
28 	HANDLE	hSnapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
29 
30 	if ( IsValidHandle( hSnapshot ) )
31 	{
32 		PROCESSENTRY32	pe;
33 
34 		if ( lpcbCopied )
35 			*lpcbCopied = 0;
36 
37 		pe.dwSize = sizeof(pe);
38 		if ( Process32First( hSnapshot, &pe ) )
39 		{
40 			fSuccess = TRUE;
41 
42 			while ( cbSize >= sizeof(*lpProcesses) )
43 			{
44 				*(lpProcesses++) = pe.th32ProcessID;
45 				if ( lpcbCopied )
46 					*lpcbCopied += sizeof(*lpProcesses);
47 				cbSize -= sizeof(*lpProcesses);
48 
49 				if ( !Process32Next( hSnapshot, &pe ) )
50 					break;
51 			}
52 		}
53 
54 		CloseHandle( hSnapshot );
55 	}
56 	else
57 		SetLastError( ERROR_INVALID_HANDLE );
58 
59 	return fSuccess;
60 }
61 
62 
63