dlls/webservices/heap.c

   1 /*
   2  * Copyright 2015, 2016 Hans Leidekker for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20 #include <stdlib.h>
  21
  22 #include "windef.h"
  23 #include "winbase.h"
  24 #include "winnls.h"
  25 #include "webservices.h"
  26
  27 #include "wine/debug.h"
  28 #include "wine/list.h"
  29 #include "webservices_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(webservices);
  32
  33 static const struct prop_desc heap_props[] =
  34 {
  35     { sizeof(SIZE_T), FALSE }, /* WS_HEAP_PROPERTY_MAX_SIZE */
  36     { sizeof(SIZE_T), FALSE }, /* WS_HEAP_PROPERTY_TRIM_SIZE */
  37     { sizeof(SIZE_T), TRUE },  /* WS_HEAP_PROPERTY_REQUESTED_SIZE */
  38     { sizeof(SIZE_T), TRUE }   /* WS_HEAP_PROPERTY_ACTUAL_SIZE */
  39 };
  40
  41 struct heap
  42 {
  43     ULONG            magic;
  44     CRITICAL_SECTION cs;
  45     HANDLE           handle;
  46     SIZE_T           max_size;
  47     SIZE_T           allocated;
  48     ULONG            prop_count;
  49     struct prop      prop[ARRAY_SIZE( heap_props )];
  50 };
  51
  52 #define HEAP_MAGIC (('H' << 24) | ('E' << 16) | ('A' << 8) | 'P')
  53
  54 static BOOL ensure_heap( struct heap *heap )
  55 {
  56     SIZE_T size;
  57     if (heap->handle) return TRUE;
  58     prop_get( heap->prop, heap->prop_count, WS_HEAP_PROPERTY_MAX_SIZE, &size, sizeof(size) );
  59     if (!(heap->handle = HeapCreate( 0, 0, 0 ))) return FALSE;
  60     heap->max_size  = size;
  61     heap->allocated = 0;
  62     return TRUE;
  63 }
  64
  65 void *ws_alloc( WS_HEAP *handle, SIZE_T size )
  66 {
  67     struct heap *heap = (struct heap *)handle;
  68     void *ret = NULL;
  69
  70     EnterCriticalSection( &heap->cs );
  71
  72     if (heap->magic != HEAP_MAGIC) goto done;
  73     if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) goto done;
  74     if ((ret = HeapAlloc( heap->handle, 0, size ))) heap->allocated += size;
  75
  76 done:
  77     LeaveCriticalSection( &heap->cs );
  78     return ret;
  79 }
  80
  81 void *ws_alloc_zero( WS_HEAP *handle, SIZE_T size )
  82 {
  83     struct heap *heap = (struct heap *)handle;
  84     void *ret = NULL;
  85
  86     EnterCriticalSection( &heap->cs );
  87
  88     if (heap->magic != HEAP_MAGIC) goto done;
  89     if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) goto done;
  90     if ((ret = HeapAlloc( heap->handle, HEAP_ZERO_MEMORY, size ))) heap->allocated += size;
  91
  92 done:
  93     LeaveCriticalSection( &heap->cs );
  94     return ret;
  95 }
  96
  97 void *ws_realloc( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_T new_size )
  98 {
  99     struct heap *heap = (struct heap *)handle;
 100     void *ret = NULL;
 101
 102     EnterCriticalSection( &heap->cs );
 103
 104     if (heap->magic != HEAP_MAGIC || !ensure_heap( heap )) goto done;
 105     if (new_size >= old_size)
 106     {
 107         SIZE_T size = new_size - old_size;
 108         if (size > heap->max_size - heap->allocated) goto done;
 109         if ((ret = HeapReAlloc( heap->handle, 0, ptr, new_size ))) heap->allocated += size;
 110     }
 111     else
 112     {
 113         SIZE_T size = old_size - new_size;
 114         if ((ret = HeapReAlloc( heap->handle, 0, ptr, new_size ))) heap->allocated -= size;
 115     }
 116
 117 done:
 118     LeaveCriticalSection( &heap->cs );
 119     return ret;
 120 }
 121
 122 void *ws_realloc_zero( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_T new_size )
 123 {
 124     struct heap *heap = (struct heap *)handle;
 125     void *ret = NULL;
 126
 127     EnterCriticalSection( &heap->cs );
 128
 129     if (heap->magic != HEAP_MAGIC || !ensure_heap( heap )) goto done;
 130     if (new_size >= old_size)
 131     {
 132         SIZE_T size = new_size - old_size;
 133         if (size > heap->max_size - heap->allocated) goto done;
 134         if ((ret = HeapReAlloc( heap->handle, HEAP_ZERO_MEMORY, ptr, new_size ))) heap->allocated += size;
 135     }
 136     else
 137     {
 138         SIZE_T size = old_size - new_size;
 139         if ((ret = HeapReAlloc( heap->handle, HEAP_ZERO_MEMORY, ptr, new_size ))) heap->allocated -= size;
 140     }
 141
 142 done:
 143     LeaveCriticalSection( &heap->cs );
 144     return ret;
 145 }
 146
 147 void ws_free( WS_HEAP *handle, void *ptr, SIZE_T size )
 148 {
 149     struct heap *heap = (struct heap *)handle;
 150
 151     EnterCriticalSection( &heap->cs );
 152
 153     if (heap->magic == HEAP_MAGIC)
 154     {
 155         HeapFree( heap->handle, 0, ptr );
 156         heap->allocated -= size;
 157     }
 158
 159     LeaveCriticalSection( &heap->cs );
 160 }
 161
 162 /**************************************************************************
 163  *          WsAlloc             [webservices.@]
 164  */
 165 HRESULT WINAPI WsAlloc( WS_HEAP *handle, SIZE_T size, void **ptr, WS_ERROR *error )
 166 {
 167     void *mem;
 168
 169     TRACE( "%p %Iu %p %p\n", handle, size, ptr, error );
 170     if (error) FIXME( "ignoring error parameter\n" );
 171
 172     if (!handle || !ptr) return E_INVALIDARG;
 173     if (!(mem = ws_alloc( handle, size ))) return WS_E_QUOTA_EXCEEDED;
 174     *ptr = mem;
 175     return S_OK;
 176 }
 177
 178 static struct heap *alloc_heap(void)
 179 {
 180     static const ULONG count = ARRAY_SIZE( heap_props );
 181     struct heap *ret;
 182     ULONG size = sizeof(*ret) + prop_size( heap_props, count );
 183
 184     if (!(ret = calloc( 1, size ))) return NULL;
 185
 186     ret->magic      = HEAP_MAGIC;
 187     InitializeCriticalSection( &ret->cs );
 188     ret->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": heap.cs");
 189
 190     prop_init( heap_props, count, ret->prop, &ret[1] );
 191     ret->prop_count = count;
 192     return ret;
 193 }
 194
 195 /**************************************************************************
 196  *          WsCreateHeap                [webservices.@]
 197  */
 198 HRESULT WINAPI WsCreateHeap( SIZE_T max_size, SIZE_T trim_size, const WS_HEAP_PROPERTY *properties,
 199                              ULONG count, WS_HEAP **handle, WS_ERROR *error )
 200 {
 201     struct heap *heap;
 202
 203     TRACE( "%Iu %Iu %p %lu %p %p\n", max_size, trim_size, properties, count, handle, error );
 204     if (error) FIXME( "ignoring error parameter\n" );
 205
 206     if (!handle || count) return E_INVALIDARG;
 207     if (!(heap = alloc_heap())) return E_OUTOFMEMORY;
 208
 209     prop_set( heap->prop, heap->prop_count, WS_HEAP_PROPERTY_MAX_SIZE, &max_size, sizeof(max_size) );
 210     prop_set( heap->prop, heap->prop_count, WS_HEAP_PROPERTY_TRIM_SIZE, &trim_size, sizeof(trim_size) );
 211
 212     TRACE( "created %p\n", heap );
 213     *handle = (WS_HEAP *)heap;
 214     return S_OK;
 215 }
 216
 217 static void reset_heap( struct heap *heap )
 218 {
 219     if (heap->handle) HeapDestroy( heap->handle );
 220     heap->handle   = NULL;
 221     heap->max_size = heap->allocated = 0;
 222 }
 223
 224 /**************************************************************************
 225  *          WsFreeHeap          [webservices.@]
 226  */
 227 void WINAPI WsFreeHeap( WS_HEAP *handle )
 228 {
 229     struct heap *heap = (struct heap *)handle;
 230
 231     TRACE( "%p\n", handle );
 232
 233     if (!heap) return;
 234
 235     EnterCriticalSection( &heap->cs );
 236
 237     if (heap->magic != HEAP_MAGIC)
 238     {
 239         LeaveCriticalSection( &heap->cs );
 240         return;
 241     }
 242
 243     reset_heap( heap );
 244     heap->magic = 0;
 245
 246     LeaveCriticalSection( &heap->cs );
 247
 248     heap->cs.DebugInfo->Spare[0] = 0;
 249     DeleteCriticalSection( &heap->cs );
 250     free( heap );
 251 }
 252
 253 /**************************************************************************
 254  *          WsResetHeap         [webservices.@]
 255  */
 256 HRESULT WINAPI WsResetHeap( WS_HEAP *handle, WS_ERROR *error )
 257 {
 258     struct heap *heap = (struct heap *)handle;
 259     HRESULT hr = S_OK;
 260
 261     TRACE( "%p %p\n", handle, error );
 262     if (error) FIXME( "ignoring error parameter\n" );
 263
 264     if (!heap) return E_INVALIDARG;
 265
 266     EnterCriticalSection( &heap->cs );
 267
 268     if (heap->magic != HEAP_MAGIC)
 269     {
 270         LeaveCriticalSection( &heap->cs );
 271         return E_INVALIDARG;
 272     }
 273
 274     reset_heap( heap );
 275
 276     LeaveCriticalSection( &heap->cs );
 277     TRACE( "returning %#lx\n", hr );
 278     return hr;
 279 }
 280
 281 /**************************************************************************
 282  *          WsGetHeapProperty           [webservices.@]
 283  */
 284 HRESULT WINAPI WsGetHeapProperty( WS_HEAP *handle, WS_HEAP_PROPERTY_ID id, void *buf,
 285                                   ULONG size, WS_ERROR *error )
 286 {
 287     struct heap *heap = (struct heap *)handle;
 288     HRESULT hr = S_OK;
 289
 290     TRACE( "%p %u %p %lu %p\n", handle, id, buf, size, error );
 291     if (error) FIXME( "ignoring error parameter\n" );
 292
 293     if (!heap) return E_INVALIDARG;
 294
 295     EnterCriticalSection( &heap->cs );
 296
 297     if (heap->magic != HEAP_MAGIC)
 298     {
 299         LeaveCriticalSection( &heap->cs );
 300         return E_INVALIDARG;
 301     }
 302
 303     switch (id)
 304     {
 305     case WS_HEAP_PROPERTY_REQUESTED_SIZE:
 306     case WS_HEAP_PROPERTY_ACTUAL_SIZE:
 307     {
 308         SIZE_T *heap_size = buf;
 309         if (!buf || size != sizeof(heap_size)) hr = E_INVALIDARG;
 310         else *heap_size = heap->allocated;
 311         break;
 312     }
 313     default:
 314         hr = prop_get( heap->prop, heap->prop_count, id, buf, size );
 315     }
 316
 317     LeaveCriticalSection( &heap->cs );
 318     TRACE( "returning %#lx\n", hr );
 319     return hr;
 320 }
 321
 322 #define XML_BUFFER_INITIAL_ALLOCATED_SIZE 256
 323 struct xmlbuf *alloc_xmlbuf( WS_HEAP *heap, SIZE_T size, WS_XML_WRITER_ENCODING_TYPE encoding, WS_CHARSET charset,
 324                              const WS_XML_DICTIONARY *dict_static, WS_XML_DICTIONARY *dict )
 325 {
 326     struct xmlbuf *ret;
 327
 328     if (!size) size = XML_BUFFER_INITIAL_ALLOCATED_SIZE;
 329     if (!(ret = ws_alloc( heap, sizeof(*ret) ))) return NULL;
 330     if (!(ret->bytes.bytes = ws_alloc( heap, size )))
 331     {
 332         ws_free( heap, ret, sizeof(*ret) );
 333         return NULL;
 334     }
 335     ret->heap         = heap;
 336     ret->size         = size;
 337     ret->bytes.length = 0;
 338     ret->encoding     = encoding;
 339     ret->charset      = charset;
 340     ret->dict_static  = dict_static;
 341     ret->dict         = dict;
 342     return ret;
 343 }
 344
 345 void free_xmlbuf( struct xmlbuf *xmlbuf )
 346 {
 347     if (!xmlbuf) return;
 348     ws_free( xmlbuf->heap, xmlbuf->bytes.bytes, xmlbuf->size );
 349     ws_free( xmlbuf->heap, xmlbuf, sizeof(*xmlbuf) );
 350 }
 351
 352 /**************************************************************************
 353  *          WsCreateXmlBuffer           [webservices.@]
 354  */
 355 HRESULT WINAPI WsCreateXmlBuffer( WS_HEAP *heap, const WS_XML_BUFFER_PROPERTY *properties,
 356                                   ULONG count, WS_XML_BUFFER **handle, WS_ERROR *error )
 357 {
 358     struct xmlbuf *xmlbuf;
 359
 360     TRACE( "%p %p %lu %p %p\n", heap, properties, count, handle, error );
 361     if (error) FIXME( "ignoring error parameter\n" );
 362
 363     if (!heap || !handle) return E_INVALIDARG;
 364     if (count) FIXME( "properties not implemented\n" );
 365
 366     if (!(xmlbuf = alloc_xmlbuf( heap, 0, WS_XML_WRITER_ENCODING_TYPE_TEXT, WS_CHARSET_UTF8, NULL, NULL )))
 367     {
 368         return WS_E_QUOTA_EXCEEDED;
 369     }
 370
 371     TRACE( "created %p\n", xmlbuf );
 372     *handle = (WS_XML_BUFFER *)xmlbuf;
 373     return S_OK;
 374 }