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
22 #include "wine/port.h"
23 #include "wine/debug.h"
32 #include "winhttp_private.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
36 #define HANDLE_CHUNK_SIZE 0x10
38 static CRITICAL_SECTION handle_cs;
39 static CRITICAL_SECTION_DEBUG handle_cs_debug =
42 { &handle_cs_debug.ProcessLocksList, &handle_cs_debug.ProcessLocksList },
43 0, 0, { (ULONG_PTR)(__FILE__ ": handle_cs") }
45 static CRITICAL_SECTION handle_cs = { &handle_cs_debug, -1, 0, 0, 0, 0 };
47 static object_header_t **handles;
48 static ULONG_PTR next_handle;
49 static ULONG_PTR max_handles;
51 object_header_t *addref_object( object_header_t *hdr )
53 ULONG refs = InterlockedIncrement( &hdr->refs );
54 TRACE("%p -> refcount = %d\n", hdr, refs);
58 object_header_t *grab_object( HINTERNET hinternet )
60 object_header_t *hdr = NULL;
61 ULONG_PTR handle = (ULONG_PTR)hinternet;
63 EnterCriticalSection( &handle_cs );
65 if ((handle > 0) && (handle <= max_handles) && handles[handle - 1])
66 hdr = addref_object( handles[handle - 1] );
68 LeaveCriticalSection( &handle_cs );
70 TRACE("handle 0x%lx -> %p\n", handle, hdr);
74 void release_object( object_header_t *hdr )
76 ULONG refs = InterlockedDecrement( &hdr->refs );
77 TRACE("object %p refcount = %d\n", hdr, refs);
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( object_header_t *hdr )
91 ULONG_PTR handle = 0, num;
93 list_init( &hdr->children );
95 EnterCriticalSection( &handle_cs );
98 num = HANDLE_CHUNK_SIZE;
99 if (!(p = heap_alloc_zero( sizeof(ULONG_PTR) * num ))) goto end;
103 if (max_handles == next_handle)
105 num = max_handles + HANDLE_CHUNK_SIZE;
106 if (!(p = heap_realloc_zero( handles, sizeof(ULONG_PTR) * num ))) goto end;
110 handle = next_handle;
111 if (handles[handle]) ERR("handle isn't free but should be\n");
113 handles[handle] = addref_object( hdr );
114 while (handles[next_handle] && (next_handle < max_handles)) next_handle++;
117 LeaveCriticalSection( &handle_cs );
118 return hdr->handle = (HINTERNET)(handle + 1);
121 BOOL free_handle( HINTERNET hinternet )
124 ULONG_PTR handle = (ULONG_PTR)hinternet;
125 object_header_t *hdr = NULL, *child, *next;
127 EnterCriticalSection( &handle_cs );
129 if ((handle > 0) && (handle <= max_handles))
134 hdr = handles[handle];
135 TRACE("destroying handle 0x%lx for object %p\n", handle + 1, hdr);
136 handles[handle] = NULL;
141 LeaveCriticalSection( &handle_cs );
145 LIST_FOR_EACH_ENTRY_SAFE( child, next, &hdr->children, object_header_t, entry )
147 TRACE("freeing child handle %p for parent handle 0x%lx\n", child->handle, handle + 1);
148 free_handle( child->handle );
150 release_object( hdr );
153 EnterCriticalSection( &handle_cs );
154 if (next_handle > handle && !handles[handle]) next_handle = handle;
155 LeaveCriticalSection( &handle_cs );