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