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
29 #include "wine/debug.h"
30 #include "winhttp_private.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(winhttp
);
34 #define HANDLE_CHUNK_SIZE 0x10
36 static CRITICAL_SECTION handle_cs
;
37 static CRITICAL_SECTION_DEBUG handle_cs_debug
=
40 { &handle_cs_debug
.ProcessLocksList
, &handle_cs_debug
.ProcessLocksList
},
41 0, 0, { (ULONG_PTR
)(__FILE__
": handle_cs") }
43 static CRITICAL_SECTION handle_cs
= { &handle_cs_debug
, -1, 0, 0, 0, 0 };
45 static struct object_header
**handles
;
46 static ULONG_PTR next_handle
;
47 static ULONG_PTR max_handles
;
49 struct object_header
*addref_object( struct object_header
*hdr
)
51 ULONG refs
= InterlockedIncrement( &hdr
->refs
);
52 TRACE("%p -> refcount = %d\n", hdr
, refs
);
56 struct object_header
*grab_object( HINTERNET hinternet
)
58 struct object_header
*hdr
= NULL
;
59 ULONG_PTR handle
= (ULONG_PTR
)hinternet
;
61 EnterCriticalSection( &handle_cs
);
63 if ((handle
> 0) && (handle
<= max_handles
) && handles
[handle
- 1])
64 hdr
= addref_object( handles
[handle
- 1] );
66 LeaveCriticalSection( &handle_cs
);
68 TRACE("handle 0x%lx -> %p\n", handle
, hdr
);
72 void release_object( struct object_header
*hdr
)
74 ULONG refs
= InterlockedDecrement( &hdr
->refs
);
75 TRACE("object %p refcount = %d\n", hdr
, refs
);
78 if (hdr
->type
== WINHTTP_HANDLE_TYPE_REQUEST
) close_connection( (request_t
*)hdr
);
80 send_callback( hdr
, WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING
, &hdr
->handle
, sizeof(HINTERNET
) );
82 TRACE("destroying object %p\n", hdr
);
83 if (hdr
->type
!= WINHTTP_HANDLE_TYPE_SESSION
) list_remove( &hdr
->entry
);
84 hdr
->vtbl
->destroy( hdr
);
88 HINTERNET
alloc_handle( struct object_header
*hdr
)
90 struct object_header
**p
;
91 ULONG_PTR handle
, num
;
93 list_init( &hdr
->children
);
96 EnterCriticalSection( &handle_cs
);
99 num
= HANDLE_CHUNK_SIZE
;
100 if (!(p
= heap_alloc_zero( sizeof(ULONG_PTR
) * num
))) goto end
;
104 if (max_handles
== next_handle
)
106 num
= max_handles
* 2;
107 if (!(p
= heap_realloc_zero( handles
, sizeof(ULONG_PTR
) * num
))) goto end
;
111 handle
= next_handle
;
112 if (handles
[handle
]) ERR("handle isn't free but should be\n");
114 handles
[handle
] = addref_object( hdr
);
115 hdr
->handle
= (HINTERNET
)(handle
+ 1);
116 while ((next_handle
< max_handles
) && handles
[next_handle
]) next_handle
++;
119 LeaveCriticalSection( &handle_cs
);
123 BOOL
free_handle( HINTERNET hinternet
)
126 ULONG_PTR handle
= (ULONG_PTR
)hinternet
;
127 struct object_header
*hdr
= NULL
, *child
, *next
;
129 EnterCriticalSection( &handle_cs
);
131 if ((handle
> 0) && (handle
<= max_handles
))
136 hdr
= handles
[handle
];
137 TRACE("destroying handle 0x%lx for object %p\n", handle
+ 1, hdr
);
138 handles
[handle
] = NULL
;
143 LeaveCriticalSection( &handle_cs
);
147 LIST_FOR_EACH_ENTRY_SAFE( child
, next
, &hdr
->children
, struct object_header
, entry
)
149 TRACE("freeing child handle %p for parent handle 0x%lx\n", child
->handle
, handle
+ 1);
150 free_handle( child
->handle
);
152 release_object( hdr
);
155 EnterCriticalSection( &handle_cs
);
156 if (next_handle
> handle
&& !handles
[handle
]) next_handle
= handle
;
157 LeaveCriticalSection( &handle_cs
);