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     *handle = (WS_HEAP *)heap;
 212     return S_OK;
 213 }
 214
 215 static void reset_heap( struct heap *heap )
 216 {
 217     HeapDestroy( heap->handle );
 218     heap->handle   = NULL;
 219     heap->max_size = heap->allocated = 0;
 220 }
 221
 222 /**************************************************************************
 223  *          WsFreeHeap          [webservices.@]
 224  */
 225 void WINAPI WsFreeHeap( WS_HEAP *handle )
 226 {
 227     struct heap *heap = (struct heap *)handle;
 228
 229     TRACE( "%p\n", handle );
 230
 231     if (!heap) return;
 232
 233     EnterCriticalSection( &heap->cs );
 234
 235     if (heap->magic != HEAP_MAGIC)
 236     {
 237         LeaveCriticalSection( &heap->cs );
 238         return;
 239     }
 240
 241     reset_heap( heap );
 242     heap->magic = 0;
 243
 244     LeaveCriticalSection( &heap->cs );
 245
 246     heap->cs.DebugInfo->Spare[0] = 0;
 247     DeleteCriticalSection( &heap->cs );
 248     heap_free( heap );
 249 }
 250
 251 /**************************************************************************
 252  *          WsResetHeap         [webservices.@]
 253  */
 254 HRESULT WINAPI WsResetHeap( WS_HEAP *handle, WS_ERROR *error )
 255 {
 256     struct heap *heap = (struct heap *)handle;
 257
 258     TRACE( "%p %p\n", handle, error );
 259     if (error) FIXME( "ignoring error parameter\n" );
 260
 261     if (!heap) return E_INVALIDARG;
 262
 263     EnterCriticalSection( &heap->cs );
 264
 265     if (heap->magic != HEAP_MAGIC)
 266     {
 267         LeaveCriticalSection( &heap->cs );
 268         return E_INVALIDARG;
 269     }
 270
 271     reset_heap( heap );
 272
 273     LeaveCriticalSection( &heap->cs );
 274     return S_OK;
 275 }
 276
 277 /**************************************************************************
 278  *          WsGetHeapProperty           [webservices.@]
 279  */
 280 HRESULT WINAPI WsGetHeapProperty( WS_HEAP *handle, WS_HEAP_PROPERTY_ID id, void *buf,
 281                                   ULONG size, WS_ERROR *error )
 282 {
 283     struct heap *heap = (struct heap *)handle;
 284     HRESULT hr = S_OK;
 285
 286     TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
 287     if (error) FIXME( "ignoring error parameter\n" );
 288
 289     if (!heap) return E_INVALIDARG;
 290
 291     EnterCriticalSection( &heap->cs );
 292
 293     if (heap->magic != HEAP_MAGIC)
 294     {
 295         LeaveCriticalSection( &heap->cs );
 296         return E_INVALIDARG;
 297     }
 298
 299     switch (id)
 300     {
 301     case WS_HEAP_PROPERTY_REQUESTED_SIZE:
 302     case WS_HEAP_PROPERTY_ACTUAL_SIZE:
 303     {
 304         SIZE_T *heap_size = buf;
 305         if (!buf || size != sizeof(heap_size)) hr = E_INVALIDARG;
 306         else *heap_size = heap->allocated;
 307         break;
 308     }
 309     default:
 310         hr = prop_get( heap->prop, heap->prop_count, id, buf, size );
 311     }
 312
 313     LeaveCriticalSection( &heap->cs );
 314     return hr;
 315 }
 316
 317 #define XML_BUFFER_INITIAL_ALLOCATED_SIZE 256
 318 struct xmlbuf *alloc_xmlbuf( WS_HEAP *heap, WS_XML_WRITER_ENCODING_TYPE encoding, WS_CHARSET charset )
 319 {
 320     struct xmlbuf *ret;
 321
 322     if (!(ret = ws_alloc( heap, sizeof(*ret) ))) return NULL;
 323     if (!(ret->bytes.bytes = ws_alloc( heap, XML_BUFFER_INITIAL_ALLOCATED_SIZE )))
 324     {
 325         ws_free( heap, ret, sizeof(*ret) );
 326         return NULL;
 327     }
 328     ret->heap         = heap;
 329     ret->size         = XML_BUFFER_INITIAL_ALLOCATED_SIZE;
 330     ret->bytes.length = 0;
 331     ret->encoding     = encoding;
 332     ret->charset      = charset;
 333     return ret;
 334 }
 335
 336 void free_xmlbuf( struct xmlbuf *xmlbuf )
 337 {
 338     if (!xmlbuf) return;
 339     ws_free( xmlbuf->heap, xmlbuf->bytes.bytes, xmlbuf->size );
 340     ws_free( xmlbuf->heap, xmlbuf, sizeof(*xmlbuf) );
 341 }
 342
 343 /**************************************************************************
 344  *          WsCreateXmlBuffer           [webservices.@]
 345  */
 346 HRESULT WINAPI WsCreateXmlBuffer( WS_HEAP *heap, const WS_XML_BUFFER_PROPERTY *properties,
 347                                   ULONG count, WS_XML_BUFFER **handle, WS_ERROR *error )
 348 {
 349     struct xmlbuf *xmlbuf;
 350
 351     if (!heap || !handle) return E_INVALIDARG;
 352     if (count) FIXME( "properties not implemented\n" );
 353
 354     if (!(xmlbuf = alloc_xmlbuf( heap, WS_XML_WRITER_ENCODING_TYPE_TEXT, WS_CHARSET_UTF8 )))
 355     {
 356         return WS_E_QUOTA_EXCEEDED;
 357     }
 358
 359     *handle = (WS_XML_BUFFER *)xmlbuf;
 360     return S_OK;
 361 }