2 * Copyright 2008 Hans Leidekker for CodeWeavers
4 * Based on the handle implementation from wininet.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include "winhttp_private.h"
23 #define HANDLE_CHUNK_SIZE 0x10
25 static CRITICAL_SECTION handle_cs
;
26 static CRITICAL_SECTION_DEBUG handle_cs_debug
=
29 { &handle_cs_debug
.ProcessLocksList
, &handle_cs_debug
.ProcessLocksList
},
30 0, 0, { (ULONG_PTR
)(__FILE__
": handle_cs") }
32 static CRITICAL_SECTION handle_cs
= { &handle_cs_debug
, -1, 0, 0, 0, 0 };
34 static object_header_t
**handles
;
35 static ULONG_PTR next_handle
;
36 static ULONG_PTR max_handles
;
38 object_header_t
*addref_object( object_header_t
*hdr
)
40 ULONG refs
= InterlockedIncrement( &hdr
->refs
);
41 TRACE("%p -> refcount = %d\n", hdr
, refs
);
45 object_header_t
*grab_object( HINTERNET hinternet
)
47 object_header_t
*hdr
= NULL
;
48 ULONG_PTR handle
= (ULONG_PTR
)hinternet
;
50 EnterCriticalSection( &handle_cs
);
52 if ((handle
> 0) && (handle
<= max_handles
) && handles
[handle
- 1])
53 hdr
= addref_object( handles
[handle
- 1] );
55 LeaveCriticalSection( &handle_cs
);
57 TRACE("handle 0x%lx -> %p\n", handle
, hdr
);
61 void release_object( object_header_t
*hdr
)
63 ULONG refs
= InterlockedDecrement( &hdr
->refs
);
64 TRACE("object %p refcount = %d\n", hdr
, refs
);
67 if (hdr
->type
== WINHTTP_HANDLE_TYPE_REQUEST
) close_connection( (request_t
*)hdr
);
69 send_callback( hdr
, WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING
, &hdr
->handle
, sizeof(HINTERNET
) );
71 TRACE("destroying object %p\n", hdr
);
72 if (hdr
->type
!= WINHTTP_HANDLE_TYPE_SESSION
) list_remove( &hdr
->entry
);
73 hdr
->vtbl
->destroy( hdr
);
77 HINTERNET
alloc_handle( object_header_t
*hdr
)
80 ULONG_PTR handle
, num
;
82 list_init( &hdr
->children
);
85 EnterCriticalSection( &handle_cs
);
88 num
= HANDLE_CHUNK_SIZE
;
89 if (!(p
= heap_alloc_zero( sizeof(ULONG_PTR
) * num
))) goto end
;
93 if (max_handles
== next_handle
)
95 num
= max_handles
* 2;
96 if (!(p
= heap_realloc_zero( handles
, sizeof(ULONG_PTR
) * num
))) goto end
;
100 handle
= next_handle
;
101 if (handles
[handle
]) ERR("handle isn't free but should be\n");
103 handles
[handle
] = addref_object( hdr
);
104 hdr
->handle
= (HINTERNET
)(handle
+ 1);
105 while ((next_handle
< max_handles
) && handles
[next_handle
]) next_handle
++;
108 LeaveCriticalSection( &handle_cs
);
112 BOOL
free_handle( HINTERNET hinternet
)
115 ULONG_PTR handle
= (ULONG_PTR
)hinternet
;
116 object_header_t
*hdr
= NULL
, *child
, *next
;
118 EnterCriticalSection( &handle_cs
);
120 if ((handle
> 0) && (handle
<= max_handles
))
125 hdr
= handles
[handle
];
126 TRACE("destroying handle 0x%lx for object %p\n", handle
+ 1, hdr
);
127 handles
[handle
] = NULL
;
132 LeaveCriticalSection( &handle_cs
);
136 LIST_FOR_EACH_ENTRY_SAFE( child
, next
, &hdr
->children
, object_header_t
, entry
)
138 TRACE("freeing child handle %p for parent handle 0x%lx\n", child
->handle
, handle
+ 1);
139 free_handle( child
->handle
);
141 release_object( hdr
);
144 EnterCriticalSection( &handle_cs
);
145 if (next_handle
> handle
&& !handles
[handle
]) next_handle
= handle
;
146 LeaveCriticalSection( &handle_cs
);