vndservervendor.c revision 1b5d61b8 
1/*
2 * Copyright (c) 2016, NVIDIA CORPORATION.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and/or associated documentation files (the
6 * "Materials"), to deal in the Materials without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Materials, and to
9 * permit persons to whom the Materials are furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included
13 * unaltered in all copies or substantial portions of the Materials.
14 * Any additions, deletions, or changes to the original source files
15 * must be clearly indicated in accompanying documentation.
16 *
17 * If only executable code is distributed, then the accompanying
18 * documentation must state that "this software is based in part on the
19 * work of the Khronos Group."
20 *
21 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
25 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
26 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
27 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
28 */
29
30#include "vndservervendor.h"
31
32struct xorg_list GlxVendorList = { &GlxVendorList, &GlxVendorList };
33
34GlxServerVendor *GlxCreateVendor(const GlxServerImports *imports)
35{
36    GlxServerVendor *vendor = NULL;
37
38    if (imports == NULL) {
39        ErrorF("GLX: Vendor library did not provide an imports table\n");
40        return NULL;
41    }
42
43    if (imports->extensionCloseDown == NULL
44            || imports->handleRequest == NULL
45            || imports->getDispatchAddress == NULL
46            || imports->makeCurrent == NULL) {
47        ErrorF("GLX: Vendor library is missing required callback functions.\n");
48        return NULL;
49    }
50
51    vendor = (GlxServerVendor *) calloc(1, sizeof(GlxServerVendor));
52    if (vendor == NULL) {
53        ErrorF("GLX: Can't allocate vendor library.\n");
54        return NULL;
55    }
56    memcpy(&vendor->glxvc, imports, sizeof(GlxServerImports));
57
58    xorg_list_append(&vendor->entry, &GlxVendorList);
59    return vendor;
60}
61
62void GlxDestroyVendor(GlxServerVendor *vendor)
63{
64    if (vendor != NULL) {
65        xorg_list_del(&vendor->entry);
66        free(vendor);
67    }
68}
69
70void GlxVendorExtensionReset(const ExtensionEntry *extEntry)
71{
72    GlxServerVendor *vendor, *tempVendor;
73
74    // TODO: Do we allow the driver to destroy a vendor library handle from
75    // here?
76    xorg_list_for_each_entry_safe(vendor, tempVendor, &GlxVendorList, entry) {
77        if (vendor->glxvc.extensionCloseDown != NULL) {
78            vendor->glxvc.extensionCloseDown(extEntry);
79        }
80    }
81
82    // If the server is exiting instead of starting a new generation, then
83    // free the remaining GlxServerVendor structs.
84    //
85    // XXX this used to be conditional on xf86ServerIsExiting, but it's
86    // cleaner to just always create the vendor struct on every generation,
87    // if nothing else so all ddxes get the same behavior.
88    xorg_list_for_each_entry_safe(vendor, tempVendor, &GlxVendorList, entry) {
89        GlxDestroyVendor(vendor);
90    }
91}
92