src/gallium/state_trackers/nine/iunknown.c

   1 /*
   2  * Copyright 2011 Joakim Sindholt <opensource@zhasha.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "iunknown.h"
  24 #include "util/u_atomic.h"
  25 #include "util/u_hash_table.h"
  26
  27 #include "nine_helpers.h"
  28 #include "nine_pdata.h"
  29 #include "nine_lock.h"
  30
  31 #define DBG_CHANNEL DBG_UNKNOWN
  32
  33 HRESULT
  34 NineUnknown_ctor( struct NineUnknown *This,
  35                   struct NineUnknownParams *pParams )
  36 {
  37     if (pParams->container) {
  38         This->refs = 0;
  39         This->forward = true;
  40         This->bind = 0;
  41         assert(!pParams->start_with_bind_not_ref);
  42     } else if (pParams->start_with_bind_not_ref) {
  43         This->refs = 0;
  44         This->forward = false;
  45         This->bind = 1;
  46     } else {
  47         This->refs = 1;
  48         This->forward = false;
  49         This->bind = 0;
  50     }
  51
  52     This->container = pParams->container;
  53     This->device = pParams->device;
  54     if (This->refs && This->device)
  55         NineUnknown_AddRef(NineUnknown(This->device));
  56
  57     This->vtable = pParams->vtable;
  58     This->vtable_internal = pParams->vtable;
  59     This->guids = pParams->guids;
  60     This->dtor = pParams->dtor;
  61
  62     This->pdata = _mesa_hash_table_create(NULL, ht_guid_hash, ht_guid_compare);
  63     if (!This->pdata)
  64         return E_OUTOFMEMORY;
  65
  66     return D3D_OK;
  67 }
  68
  69 void
  70 NineUnknown_dtor( struct NineUnknown *This )
  71 {
  72     if (This->refs && This->device) /* Possible only if early exit after a ctor failed */
  73         (void) NineUnknown_Release(NineUnknown(This->device));
  74
  75     if (This->pdata) {
  76         util_hash_table_foreach(This->pdata, ht_guid_delete, NULL);
  77         _mesa_hash_table_destroy(This->pdata, NULL);
  78     }
  79
  80     FREE(This);
  81 }
  82
  83 HRESULT NINE_WINAPI
  84 NineUnknown_QueryInterface( struct NineUnknown *This,
  85                             REFIID riid,
  86                             void **ppvObject )
  87 {
  88     unsigned i = 0;
  89     char guid_str[64];
  90
  91     DBG("This=%p riid=%p id=%s ppvObject=%p\n",
  92         This, riid, riid ? GUID_sprintf(guid_str, riid) : "", ppvObject);
  93
  94     (void)guid_str;
  95
  96     if (!ppvObject) return E_POINTER;
  97
  98     do {
  99         if (GUID_equal(This->guids[i], riid)) {
 100             *ppvObject = This;
 101             /* Tests showed that this call succeeds even on objects with
 102              * zero refcount. This can happen if the app released all references
 103              * but the resource is still bound.
 104              */
 105             NineUnknown_AddRef(This);
 106             return S_OK;
 107         }
 108     } while (This->guids[++i]);
 109
 110     *ppvObject = NULL;
 111     return E_NOINTERFACE;
 112 }
 113
 114 ULONG NINE_WINAPI
 115 NineUnknown_AddRef( struct NineUnknown *This )
 116 {
 117     ULONG r;
 118     if (This->forward)
 119         return NineUnknown_AddRef(This->container);
 120     else
 121         r = p_atomic_inc_return(&This->refs);
 122
 123     if (r == 1) {
 124         if (This->device)
 125             NineUnknown_AddRef(NineUnknown(This->device));
 126     }
 127     return r;
 128 }
 129
 130 ULONG NINE_WINAPI
 131 NineUnknown_Release( struct NineUnknown *This )
 132 {
 133     if (This->forward)
 134         return NineUnknown_Release(This->container);
 135
 136     ULONG r = p_atomic_dec_return(&This->refs);
 137
 138     if (r == 0) {
 139         if (This->device) {
 140             if (NineUnknown_Release(NineUnknown(This->device)) == 0)
 141                 return r; /* everything's gone */
 142         }
 143         /* Containers (here with !forward) take care of item destruction */
 144         if (!This->container && This->bind == 0) {
 145             This->dtor(This);
 146         }
 147     }
 148     return r;
 149 }
 150
 151 /* No need to lock the mutex protecting nine (when D3DCREATE_MULTITHREADED)
 152  * for AddRef and Release, except for dtor as some of the dtors require it. */
 153 ULONG NINE_WINAPI
 154 NineUnknown_ReleaseWithDtorLock( struct NineUnknown *This )
 155 {
 156     if (This->forward)
 157         return NineUnknown_ReleaseWithDtorLock(This->container);
 158
 159     ULONG r = p_atomic_dec_return(&This->refs);
 160
 161     if (r == 0) {
 162         if (This->device) {
 163             if (NineUnknown_ReleaseWithDtorLock(NineUnknown(This->device)) == 0)
 164                 return r; /* everything's gone */
 165         }
 166         /* Containers (here with !forward) take care of item destruction */
 167         if (!This->container && This->bind == 0) {
 168             NineLockGlobalMutex();
 169             This->dtor(This);
 170             NineUnlockGlobalMutex();
 171         }
 172     }
 173     return r;
 174 }
 175
 176 HRESULT NINE_WINAPI
 177 NineUnknown_GetDevice( struct NineUnknown *This,
 178                        IDirect3DDevice9 **ppDevice )
 179 {
 180     user_assert(ppDevice, E_POINTER);
 181     NineUnknown_AddRef(NineUnknown(This->device));
 182     *ppDevice = (IDirect3DDevice9 *)This->device;
 183     return D3D_OK;
 184 }
 185
 186 HRESULT NINE_WINAPI
 187 NineUnknown_SetPrivateData( struct NineUnknown *This,
 188                             REFGUID refguid,
 189                             const void *pData,
 190                             DWORD SizeOfData,
 191                             DWORD Flags )
 192 {
 193     enum pipe_error err;
 194     struct pheader *header;
 195     const void *user_data = pData;
 196     char guid_str[64];
 197     void *header_data;
 198
 199     DBG("This=%p GUID=%s pData=%p SizeOfData=%u Flags=%x\n",
 200         This, GUID_sprintf(guid_str, refguid), pData, SizeOfData, Flags);
 201
 202     (void)guid_str;
 203
 204     if (Flags & D3DSPD_IUNKNOWN)
 205         user_assert(SizeOfData == sizeof(IUnknown *), D3DERR_INVALIDCALL);
 206
 207     /* data consists of a header and the actual data. avoiding 2 mallocs */
 208     header = CALLOC_VARIANT_LENGTH_STRUCT(pheader, SizeOfData);
 209     if (!header) { return E_OUTOFMEMORY; }
 210     header->unknown = (Flags & D3DSPD_IUNKNOWN) ? TRUE : FALSE;
 211
 212     /* if the refguid already exists, delete it */
 213     NineUnknown_FreePrivateData(This, refguid);
 214
 215     /* IUnknown special case */
 216     if (header->unknown) {
 217         /* here the pointer doesn't point to the data we want, so point at the
 218          * pointer making what we eventually copy is the pointer itself */
 219         user_data = &pData;
 220     }
 221
 222     header->size = SizeOfData;
 223     header_data = (void *)header + sizeof(*header);
 224     memcpy(header_data, user_data, header->size);
 225     memcpy(&header->guid, refguid, sizeof(header->guid));
 226
 227     _mesa_hash_table_insert(This->pdata, &header->guid, header);
 228     if (header->unknown) { IUnknown_AddRef(*(IUnknown **)header_data); }
 229     return D3D_OK;
 230 }
 231
 232 HRESULT NINE_WINAPI
 233 NineUnknown_GetPrivateData( struct NineUnknown *This,
 234                             REFGUID refguid,
 235                             void *pData,
 236                             DWORD *pSizeOfData )
 237 {
 238     struct pheader *header;
 239     DWORD sizeofdata;
 240     char guid_str[64];
 241     void *header_data;
 242
 243     DBG("This=%p GUID=%s pData=%p pSizeOfData=%p\n",
 244         This, GUID_sprintf(guid_str, refguid), pData, pSizeOfData);
 245
 246     (void)guid_str;
 247
 248     header = util_hash_table_get(This->pdata, refguid);
 249     if (!header) { return D3DERR_NOTFOUND; }
 250
 251     user_assert(pSizeOfData, E_POINTER);
 252     sizeofdata = *pSizeOfData;
 253     *pSizeOfData = header->size;
 254
 255     if (!pData) {
 256         return D3D_OK;
 257     }
 258     if (sizeofdata < header->size) {
 259         return D3DERR_MOREDATA;
 260     }
 261
 262     header_data = (void *)header + sizeof(*header);
 263     if (header->unknown) { IUnknown_AddRef(*(IUnknown **)header_data); }
 264     memcpy(pData, header_data, header->size);
 265
 266     return D3D_OK;
 267 }
 268
 269 HRESULT NINE_WINAPI
 270 NineUnknown_FreePrivateData( struct NineUnknown *This,
 271                              REFGUID refguid )
 272 {
 273     struct pheader *header;
 274     char guid_str[64];
 275
 276     DBG("This=%p GUID=%s\n", This, GUID_sprintf(guid_str, refguid));
 277
 278     (void)guid_str;
 279
 280     header = util_hash_table_get(This->pdata, refguid);
 281     if (!header)
 282         return D3DERR_NOTFOUND;
 283
 284     ht_guid_delete(NULL, header, NULL);
 285     _mesa_hash_table_remove_key(This->pdata, refguid);
 286
 287     return D3D_OK;
 288 }