granicus.if.org Git - imagemagick/blob - MagickCore/resource.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %           RRRR    EEEEE   SSSSS   OOO   U   U  RRRR    CCCC  EEEEE          %
   7 %           R   R   E       SS     O   O  U   U  R   R  C      E              %
   8 %           RRRR    EEE      SSS   O   O  U   U  RRRR   C      EEE            %
   9 %           R R     E          SS  O   O  U   U  R R    C      E              %
  10 %           R  R    EEEEE   SSSSS   OOO    UUU   R  R    CCCC  EEEEE          %
  11 %                                                                             %
  12 %                                                                             %
  13 %                        Get/Set MagickCore Resources                         %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                               September 2002                                %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/cache.h"
  44 #include "MagickCore/configure.h"
  45 #include "MagickCore/exception.h"
  46 #include "MagickCore/exception-private.h"
  47 #include "MagickCore/hashmap.h"
  48 #include "MagickCore/log.h"
  49 #include "MagickCore/image.h"
  50 #include "MagickCore/memory_.h"
  51 #include "MagickCore/option.h"
  52 #include "MagickCore/policy.h"
  53 #include "MagickCore/random_.h"
  54 #include "MagickCore/registry.h"
  55 #include "MagickCore/resource_.h"
  56 #include "MagickCore/resource-private.h"
  57 #include "MagickCore/semaphore.h"
  58 #include "MagickCore/signature-private.h"
  59 #include "MagickCore/string_.h"
  60 #include "MagickCore/string-private.h"
  61 #include "MagickCore/splay-tree.h"
  62 #include "MagickCore/thread-private.h"
  63 #include "MagickCore/token.h"
  64 #include "MagickCore/utility.h"
  65 #include "MagickCore/utility-private.h"
  66 \f
  67 /*
  68   Typedef declarations.
  69 */
  70 typedef struct _ResourceInfo
  71 {
  72   MagickOffsetType
  73     area,
  74     memory,
  75     map,
  76     disk,
  77     file,
  78     thread,
  79     time;
  80
  81   MagickSizeType
  82     area_limit,
  83     memory_limit,
  84     map_limit,
  85     disk_limit,
  86     file_limit,
  87     thread_limit,
  88     time_limit;
  89 } ResourceInfo;
  90 \f
  91 /*
  92   Global declarations.
  93 */
  94 static RandomInfo
  95   *random_info = (RandomInfo *) NULL;
  96
  97 static ResourceInfo
  98   resource_info =
  99   {
 100     MagickULLConstant(0),
 101     MagickULLConstant(0),
 102     MagickULLConstant(0),
 103     MagickULLConstant(0),
 104     MagickULLConstant(0),
 105     MagickULLConstant(0),
 106     MagickULLConstant(0),
 107     MagickULLConstant(3072)*1024*1024,
 108     MagickULLConstant(1536)*1024*1024,
 109     MagickULLConstant(3072)*1024*1024,
 110     MagickResourceInfinity,
 111     MagickULLConstant(768),
 112     MagickULLConstant(1),
 113     MagickResourceInfinity
 114   };
 115
 116 static SemaphoreInfo
 117   *resource_semaphore = (SemaphoreInfo *) NULL;
 118
 119 static SplayTreeInfo
 120   *temporary_resources = (SplayTreeInfo *) NULL;
 121 \f
 122 /*
 123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 124 %                                                                             %
 125 %                                                                             %
 126 %                                                                             %
 127 %   A c q u i r e M a g i c k R e s o u r c e                                 %
 128 %                                                                             %
 129 %                                                                             %
 130 %                                                                             %
 131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 132 %
 133 %  AcquireMagickResource() acquires resources of the specified type.
 134 %  MagickFalse is returned if the specified resource is exhausted otherwise
 135 %  MagickTrue.
 136 %
 137 %  The format of the AcquireMagickResource() method is:
 138 %
 139 %      MagickBooleanType AcquireMagickResource(const ResourceType type,
 140 %        const MagickSizeType size)
 141 %
 142 %  A description of each parameter follows:
 143 %
 144 %    o type: the type of resource.
 145 %
 146 %    o size: the number of bytes needed from for this resource.
 147 %
 148 */
 149 MagickExport MagickBooleanType AcquireMagickResource(const ResourceType type,
 150   const MagickSizeType size)
 151 {
 152   char
 153     resource_current[MaxTextExtent],
 154     resource_limit[MaxTextExtent],
 155     resource_request[MaxTextExtent];
 156
 157   MagickBooleanType
 158     status;
 159
 160   MagickSizeType
 161     limit;
 162
 163   status=MagickFalse;
 164   (void) FormatMagickSize(size,MagickFalse,resource_request);
 165   if (resource_semaphore == (SemaphoreInfo *) NULL)
 166     AcquireSemaphoreInfo(&resource_semaphore);
 167   LockSemaphoreInfo(resource_semaphore);
 168   switch (type)
 169   {
 170     case AreaResource:
 171     {
 172       resource_info.area=(MagickOffsetType) size;
 173       limit=resource_info.area_limit;
 174       status=(resource_info.area_limit == MagickResourceInfinity) ||
 175         (size < limit) ? MagickTrue : MagickFalse;
 176       (void) FormatMagickSize((MagickSizeType) resource_info.area,MagickFalse,
 177         resource_current);
 178       (void) FormatMagickSize(resource_info.area_limit,MagickFalse,
 179         resource_limit);
 180       break;
 181     }
 182     case MemoryResource:
 183     {
 184       resource_info.memory+=size;
 185       limit=resource_info.memory_limit;
 186       status=(resource_info.memory_limit == MagickResourceInfinity) ||
 187         ((MagickSizeType) resource_info.memory < limit) ?
 188         MagickTrue : MagickFalse;
 189       (void) FormatMagickSize((MagickSizeType) resource_info.memory,MagickTrue,
 190         resource_current);
 191       (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,
 192         resource_limit);
 193       break;
 194     }
 195     case MapResource:
 196     {
 197       resource_info.map+=size;
 198       limit=resource_info.map_limit;
 199       status=(resource_info.map_limit == MagickResourceInfinity) ||
 200         ((MagickSizeType) resource_info.map < limit) ?
 201         MagickTrue : MagickFalse;
 202       (void) FormatMagickSize((MagickSizeType) resource_info.map,MagickTrue,
 203         resource_current);
 204       (void) FormatMagickSize(resource_info.map_limit,MagickTrue,
 205         resource_limit);
 206       break;
 207     }
 208     case DiskResource:
 209     {
 210       resource_info.disk+=size;
 211       limit=resource_info.disk_limit;
 212       status=(resource_info.disk_limit == MagickResourceInfinity) ||
 213         ((MagickSizeType) resource_info.disk < limit) ?
 214         MagickTrue : MagickFalse;
 215       (void) FormatMagickSize((MagickSizeType) resource_info.disk,MagickTrue,
 216         resource_current);
 217       (void) FormatMagickSize(resource_info.disk_limit,MagickTrue,
 218         resource_limit);
 219       break;
 220     }
 221     case FileResource:
 222     {
 223       resource_info.file+=size;
 224       limit=resource_info.file_limit;
 225       status=(resource_info.file_limit == MagickResourceInfinity) ||
 226         ((MagickSizeType) resource_info.file < limit) ?
 227         MagickTrue : MagickFalse;
 228       (void) FormatMagickSize((MagickSizeType) resource_info.file,MagickFalse,
 229         resource_current);
 230       (void) FormatMagickSize((MagickSizeType) resource_info.file_limit,
 231         MagickFalse,resource_limit);
 232       break;
 233     }
 234     case ThreadResource:
 235     {
 236       limit=resource_info.thread_limit;
 237       status=(resource_info.thread_limit == MagickResourceInfinity) ||
 238         ((MagickSizeType) resource_info.thread < limit) ?
 239         MagickTrue : MagickFalse;
 240       (void) FormatMagickSize((MagickSizeType) resource_info.thread,MagickFalse,
 241         resource_current);
 242       (void) FormatMagickSize((MagickSizeType) resource_info.thread_limit,
 243         MagickFalse,resource_limit);
 244       break;
 245     }
 246     case TimeResource:
 247     {
 248       resource_info.time+=size;
 249       limit=resource_info.time_limit;
 250       status=(resource_info.time_limit == MagickResourceInfinity) ||
 251         ((MagickSizeType) resource_info.time < limit) ?
 252         MagickTrue : MagickFalse;
 253       (void) FormatMagickSize((MagickSizeType) resource_info.time,MagickFalse,
 254         resource_current);
 255       (void) FormatMagickSize((MagickSizeType) resource_info.time_limit,
 256         MagickFalse,resource_limit);
 257       break;
 258     }
 259     default:
 260       break;
 261   }
 262   UnlockSemaphoreInfo(resource_semaphore);
 263   (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s: %s/%s/%s",
 264     CommandOptionToMnemonic(MagickResourceOptions,(ssize_t) type),
 265     resource_request,resource_current,resource_limit);
 266   return(status);
 267 }
 268 \f
 269 /*
 270 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 271 %                                                                             %
 272 %                                                                             %
 273 %                                                                             %
 274 +   A s y n c h r o n o u s R e s o u r c e C o m p o n e n t T e r m i n u s %
 275 %                                                                             %
 276 %                                                                             %
 277 %                                                                             %
 278 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 279 %
 280 %  AsynchronousResourceComponentTerminus() destroys the resource environment.
 281 %  It differs from ResourceComponentTerminus() in that it can be called from a
 282 %  asynchronous signal handler.
 283 %
 284 %  The format of the ResourceComponentTerminus() method is:
 285 %
 286 %      ResourceComponentTerminus(void)
 287 %
 288 */
 289 MagickPrivate void AsynchronousResourceComponentTerminus(void)
 290 {
 291   const char
 292     *path;
 293
 294   if (temporary_resources == (SplayTreeInfo *) NULL)
 295     return;
 296   /*
 297     Remove any lingering temporary files.
 298   */
 299   ResetSplayTreeIterator(temporary_resources);
 300   path=(const char *) GetNextKeyInSplayTree(temporary_resources);
 301   while (path != (const char *) NULL)
 302   {
 303     (void) remove_utf8(path);
 304     path=(const char *) GetNextKeyInSplayTree(temporary_resources);
 305   }
 306 }
 307 \f
 308 /*
 309 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 310 %                                                                             %
 311 %                                                                             %
 312 %                                                                             %
 313 %   A c q u i r e U n i q u e F i l e R e s o u r c e                         %
 314 %                                                                             %
 315 %                                                                             %
 316 %                                                                             %
 317 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 318 %
 319 %  AcquireUniqueFileResource() returns a unique file name, and returns a file
 320 %  descriptor for the file open for reading and writing.
 321 %
 322 %  The format of the AcquireUniqueFileResource() method is:
 323 %
 324 %      int AcquireUniqueFileResource(char *path)
 325 %
 326 %  A description of each parameter follows:
 327 %
 328 %   o  path:  Specifies a pointer to an array of characters.  The unique path
 329 %      name is returned in this array.
 330 %
 331 */
 332
 333 static void *DestroyTemporaryResources(void *temporary_resource)
 334 {
 335   (void) remove_utf8((char *) temporary_resource);
 336   temporary_resource=DestroyString((char *) temporary_resource);
 337   return((void *) NULL);
 338 }
 339
 340 static MagickBooleanType GetPathTemplate(char *path)
 341 {
 342   char
 343     *directory;
 344
 345   ExceptionInfo
 346     *exception;
 347
 348   MagickBooleanType
 349     status;
 350
 351   register char
 352     *p;
 353
 354   struct stat
 355     attributes;
 356
 357   (void) FormatLocaleString(path,MaxTextExtent,"magick-%.20g.XXXXXXXX",
 358     (double) getpid());
 359   exception=AcquireExceptionInfo();
 360   directory=(char *) GetImageRegistry(StringRegistryType,"temporary-path",
 361     exception);
 362   exception=DestroyExceptionInfo(exception);
 363   if (directory == (char *) NULL)
 364     directory=GetEnvironmentValue("MAGICK_TEMPORARY_PATH");
 365   if (directory == (char *) NULL)
 366     directory=GetEnvironmentValue("MAGICK_TMPDIR");
 367   if (directory == (char *) NULL)
 368     directory=GetPolicyValue("temporary-path");
 369   if (directory == (char *) NULL)
 370     directory=GetEnvironmentValue("TMPDIR");
 371 #if defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__OS2__)
 372   if (directory == (char *) NULL)
 373     directory=GetEnvironmentValue("TMP");
 374   if (directory == (char *) NULL)
 375     directory=GetEnvironmentValue("TEMP");
 376 #endif
 377 #if defined(__VMS)
 378   if (directory == (char *) NULL)
 379     directory=GetEnvironmentValue("MTMPDIR");
 380 #endif
 381 #if defined(P_tmpdir)
 382   if (directory == (char *) NULL)
 383     directory=ConstantString(P_tmpdir);
 384 #endif
 385   if (directory == (char *) NULL)
 386     return(MagickTrue);
 387   if (strlen(directory) > (MaxTextExtent-15))
 388     {
 389       directory=DestroyString(directory);
 390       return(MagickTrue);
 391     }
 392   status=GetPathAttributes(directory,&attributes);
 393   if ((status == MagickFalse) || !S_ISDIR(attributes.st_mode))
 394     {
 395       directory=DestroyString(directory);
 396       return(MagickTrue);
 397     }
 398   if (directory[strlen(directory)-1] == *DirectorySeparator)
 399     (void) FormatLocaleString(path,MaxTextExtent,"%smagick-%.20g.XXXXXXXX",
 400       directory,(double) getpid());
 401   else
 402     (void) FormatLocaleString(path,MaxTextExtent,"%s%smagick-%.20g.XXXXXXXX",
 403       directory,DirectorySeparator,(double) getpid());
 404   directory=DestroyString(directory);
 405   if (*DirectorySeparator != '/')
 406     for (p=path; *p != '\0'; p++)
 407       if (*p == *DirectorySeparator)
 408         *p='/';
 409   return(MagickTrue);
 410 }
 411
 412 MagickExport int AcquireUniqueFileResource(char *path)
 413 {
 414 #if !defined(O_NOFOLLOW)
 415 #define O_NOFOLLOW 0
 416 #endif
 417 #if !defined(TMP_MAX)
 418 # define TMP_MAX  238328
 419 #endif
 420
 421   int
 422     c,
 423     file;
 424
 425   register char
 426     *p;
 427
 428   register ssize_t
 429     i;
 430
 431   static const char
 432     portable_filename[65] =
 433       "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-";
 434
 435   StringInfo
 436     *key;
 437
 438   unsigned char
 439     *datum;
 440
 441   assert(path != (char *) NULL);
 442   (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
 443   if (random_info == (RandomInfo *) NULL)
 444     random_info=AcquireRandomInfo();
 445   file=(-1);
 446   for (i=0; i < (ssize_t) TMP_MAX; i++)
 447   {
 448     /*
 449       Get temporary pathname.
 450     */
 451     (void) GetPathTemplate(path);
 452     key=GetRandomKey(random_info,2);
 453     p=path+strlen(path)-8;
 454     datum=GetStringInfoDatum(key);
 455     for (i=0; i < (ssize_t) GetStringInfoLength(key); i++)
 456     {
 457       c=(int) (datum[i] & 0x3f);
 458       *p++=portable_filename[c];
 459     }
 460     key=DestroyStringInfo(key);
 461 #if defined(MAGICKCORE_HAVE_MKSTEMP)
 462     file=mkstemp(path);
 463 #if defined(__OS2__)
 464     setmode(file,O_BINARY);
 465 #endif
 466     if (file != -1)
 467       break;
 468 #endif
 469     key=GetRandomKey(random_info,6);
 470     p=path+strlen(path)-6;
 471     datum=GetStringInfoDatum(key);
 472     for (i=0; i < (ssize_t) GetStringInfoLength(key); i++)
 473     {
 474       c=(int) (datum[i] & 0x3f);
 475       *p++=portable_filename[c];
 476     }
 477     key=DestroyStringInfo(key);
 478     file=open_utf8(path,O_RDWR | O_CREAT | O_EXCL | O_BINARY | O_NOFOLLOW,S_MODE);
 479     if ((file >= 0) || (errno != EEXIST))
 480       break;
 481   }
 482   (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
 483   if (file == -1)
 484     return(file);
 485   if (resource_semaphore == (SemaphoreInfo *) NULL)
 486     AcquireSemaphoreInfo(&resource_semaphore);
 487   LockSemaphoreInfo(resource_semaphore);
 488   if (temporary_resources == (SplayTreeInfo *) NULL)
 489     temporary_resources=NewSplayTree(CompareSplayTreeString,
 490       DestroyTemporaryResources,(void *(*)(void *)) NULL);
 491   UnlockSemaphoreInfo(resource_semaphore);
 492   (void) AddValueToSplayTree(temporary_resources,ConstantString(path),
 493     (const void *) NULL);
 494   return(file);
 495 }
 496 \f
 497 /*
 498 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 499 %                                                                             %
 500 %                                                                             %
 501 %                                                                             %
 502 %   G e t M a g i c k R e s o u r c e                                         %
 503 %                                                                             %
 504 %                                                                             %
 505 %                                                                             %
 506 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 507 %
 508 %  GetMagickResource() returns the specified resource.
 509 %
 510 %  The format of the GetMagickResource() method is:
 511 %
 512 %      MagickSizeType GetMagickResource(const ResourceType type)
 513 %
 514 %  A description of each parameter follows:
 515 %
 516 %    o type: the type of resource.
 517 %
 518 */
 519 MagickExport MagickSizeType GetMagickResource(const ResourceType type)
 520 {
 521   MagickSizeType
 522     resource;
 523
 524   resource=0;
 525   LockSemaphoreInfo(resource_semaphore);
 526   switch (type)
 527   {
 528     case AreaResource:
 529     {
 530       resource=(MagickSizeType) resource_info.area;
 531       break;
 532     }
 533     case MemoryResource:
 534     {
 535       resource=(MagickSizeType) resource_info.memory;
 536       break;
 537     }
 538     case MapResource:
 539     {
 540       resource=(MagickSizeType) resource_info.map;
 541       break;
 542     }
 543     case DiskResource:
 544     {
 545       resource=(MagickSizeType) resource_info.disk;
 546       break;
 547     }
 548     case FileResource:
 549     {
 550       resource=(MagickSizeType) resource_info.file;
 551       break;
 552     }
 553     case ThreadResource:
 554     {
 555       resource=(MagickSizeType) resource_info.thread;
 556       break;
 557     }
 558     case TimeResource:
 559     {
 560       resource=(MagickSizeType) resource_info.time;
 561       break;
 562     }
 563     default:
 564       break;
 565   }
 566   UnlockSemaphoreInfo(resource_semaphore);
 567   return(resource);
 568 }
 569 \f
 570 /*
 571 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 572 %                                                                             %
 573 %                                                                             %
 574 %                                                                             %
 575 %   G e t M a g i c k R e s o u r c e L i m i t                               %
 576 %                                                                             %
 577 %                                                                             %
 578 %                                                                             %
 579 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 580 %
 581 %  GetMagickResourceLimit() returns the specified resource limit.
 582 %
 583 %  The format of the GetMagickResourceLimit() method is:
 584 %
 585 %      MagickSizeType GetMagickResourceLimit(const ResourceType type)
 586 %
 587 %  A description of each parameter follows:
 588 %
 589 %    o type: the type of resource.
 590 %
 591 */
 592 MagickExport MagickSizeType GetMagickResourceLimit(const ResourceType type)
 593 {
 594   MagickSizeType
 595     resource;
 596
 597   resource=0;
 598   if (resource_semaphore == (SemaphoreInfo *) NULL)
 599     AcquireSemaphoreInfo(&resource_semaphore);
 600   LockSemaphoreInfo(resource_semaphore);
 601   switch (type)
 602   {
 603     case AreaResource:
 604     {
 605       resource=resource_info.area_limit;
 606       break;
 607     }
 608     case MemoryResource:
 609     {
 610       resource=resource_info.memory_limit;
 611       break;
 612     }
 613     case MapResource:
 614     {
 615       resource=resource_info.map_limit;
 616       break;
 617     }
 618     case DiskResource:
 619     {
 620       resource=resource_info.disk_limit;
 621       break;
 622     }
 623     case FileResource:
 624     {
 625       resource=resource_info.file_limit;
 626       break;
 627     }
 628     case ThreadResource:
 629     {
 630       resource=resource_info.thread_limit;
 631       break;
 632     }
 633     case TimeResource:
 634     {
 635       resource=resource_info.time_limit;
 636       break;
 637     }
 638     default:
 639       break;
 640   }
 641   UnlockSemaphoreInfo(resource_semaphore);
 642   return(resource);
 643 }
 644 \f
 645 /*
 646 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 647 %                                                                             %
 648 %                                                                             %
 649 %                                                                             %
 650 %  L i s t M a g i c k R e s o u r c e I n f o                                %
 651 %                                                                             %
 652 %                                                                             %
 653 %                                                                             %
 654 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 655 %
 656 %  ListMagickResourceInfo() lists the resource info to a file.
 657 %
 658 %  The format of the ListMagickResourceInfo method is:
 659 %
 660 %      MagickBooleanType ListMagickResourceInfo(FILE *file,
 661 %        ExceptionInfo *exception)
 662 %
 663 %  A description of each parameter follows.
 664 %
 665 %    o file:  An pointer to a FILE.
 666 %
 667 %    o exception: return any errors or warnings in this structure.
 668 %
 669 */
 670 MagickExport MagickBooleanType ListMagickResourceInfo(FILE *file,
 671   ExceptionInfo *magick_unused(exception))
 672 {
 673   char
 674     area_limit[MaxTextExtent],
 675     disk_limit[MaxTextExtent],
 676     map_limit[MaxTextExtent],
 677     memory_limit[MaxTextExtent],
 678     time_limit[MaxTextExtent];
 679
 680   if (file == (const FILE *) NULL)
 681     file=stdout;
 682   if (resource_semaphore == (SemaphoreInfo *) NULL)
 683     AcquireSemaphoreInfo(&resource_semaphore);
 684   LockSemaphoreInfo(resource_semaphore);
 685   (void) FormatMagickSize(resource_info.area_limit,MagickFalse,area_limit);
 686   (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,memory_limit);
 687   (void) FormatMagickSize(resource_info.map_limit,MagickTrue,map_limit);
 688   (void) CopyMagickString(disk_limit,"unlimited",MaxTextExtent);
 689   if (resource_info.disk_limit != MagickResourceInfinity)
 690     (void) FormatMagickSize(resource_info.disk_limit,MagickTrue,disk_limit);
 691   (void) CopyMagickString(time_limit,"unlimited",MaxTextExtent);
 692   if (resource_info.time_limit != MagickResourceInfinity)
 693     (void) FormatLocaleString(time_limit,MaxTextExtent,"%.20g",(double)
 694       ((MagickOffsetType) resource_info.time_limit));
 695   (void) FormatLocaleFile(file,"File         Area       Memory          Map"
 696     "         Disk    Thread         Time\n");
 697   (void) FormatLocaleFile(file,
 698     "--------------------------------------------------------"
 699     "-----------------------\n");
 700   (void) FormatLocaleFile(file,"%4g   %10s   %10s   %10s   %10s    %6g  %11s\n",
 701     (double) ((MagickOffsetType) resource_info.file_limit),area_limit,
 702     memory_limit,map_limit,disk_limit,(double) ((MagickOffsetType)
 703     resource_info.thread_limit),time_limit);
 704   (void) fflush(file);
 705   UnlockSemaphoreInfo(resource_semaphore);
 706   return(MagickTrue);
 707 }
 708 \f
 709 /*
 710 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 711 %                                                                             %
 712 %                                                                             %
 713 %                                                                             %
 714 %   R e l i n q u i s h M a g i c k R e s o u r c e                           %
 715 %                                                                             %
 716 %                                                                             %
 717 %                                                                             %
 718 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 719 %
 720 %  RelinquishMagickResource() relinquishes resources of the specified type.
 721 %
 722 %  The format of the RelinquishMagickResource() method is:
 723 %
 724 %      void RelinquishMagickResource(const ResourceType type,
 725 %        const MagickSizeType size)
 726 %
 727 %  A description of each parameter follows:
 728 %
 729 %    o type: the type of resource.
 730 %
 731 %    o size: the size of the resource.
 732 %
 733 */
 734 MagickExport void RelinquishMagickResource(const ResourceType type,
 735   const MagickSizeType size)
 736 {
 737   char
 738     resource_current[MaxTextExtent],
 739     resource_limit[MaxTextExtent],
 740     resource_request[MaxTextExtent];
 741
 742   (void) FormatMagickSize(size,MagickFalse,resource_request);
 743   if (resource_semaphore == (SemaphoreInfo *) NULL)
 744     AcquireSemaphoreInfo(&resource_semaphore);
 745   LockSemaphoreInfo(resource_semaphore);
 746   switch (type)
 747   {
 748     case AreaResource:
 749     {
 750       resource_info.area=(MagickOffsetType) size;
 751       (void) FormatMagickSize((MagickSizeType) resource_info.area,MagickFalse,
 752         resource_current);
 753       (void) FormatMagickSize(resource_info.area_limit,MagickFalse,
 754         resource_limit);
 755       break;
 756     }
 757     case MemoryResource:
 758     {
 759       resource_info.memory-=size;
 760       (void) FormatMagickSize((MagickSizeType) resource_info.memory,
 761         MagickTrue,resource_current);
 762       (void) FormatMagickSize(resource_info.memory_limit,MagickTrue,
 763         resource_limit);
 764       break;
 765     }
 766     case MapResource:
 767     {
 768       resource_info.map-=size;
 769       (void) FormatMagickSize((MagickSizeType) resource_info.map,MagickTrue,
 770         resource_current);
 771       (void) FormatMagickSize(resource_info.map_limit,MagickTrue,
 772         resource_limit);
 773       break;
 774     }
 775     case DiskResource:
 776     {
 777       resource_info.disk-=size;
 778       (void) FormatMagickSize((MagickSizeType) resource_info.disk,MagickTrue,
 779         resource_current);
 780       (void) FormatMagickSize(resource_info.disk_limit,MagickTrue,
 781         resource_limit);
 782       break;
 783     }
 784     case FileResource:
 785     {
 786       resource_info.file-=size;
 787       (void) FormatMagickSize((MagickSizeType) resource_info.file,MagickFalse,
 788         resource_current);
 789       (void) FormatMagickSize((MagickSizeType) resource_info.file_limit,
 790         MagickFalse,resource_limit);
 791       break;
 792     }
 793     case ThreadResource:
 794     {
 795       (void) FormatMagickSize((MagickSizeType) resource_info.thread,MagickFalse,
 796         resource_current);
 797       (void) FormatMagickSize((MagickSizeType) resource_info.thread_limit,
 798         MagickFalse,resource_limit);
 799       break;
 800     }
 801     case TimeResource:
 802     {
 803       resource_info.time-=size;
 804       (void) FormatMagickSize((MagickSizeType) resource_info.time,MagickFalse,
 805         resource_current);
 806       (void) FormatMagickSize((MagickSizeType) resource_info.time_limit,
 807         MagickFalse,resource_limit);
 808       break;
 809     }
 810     default:
 811       break;
 812   }
 813   UnlockSemaphoreInfo(resource_semaphore);
 814   (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s: %s/%s/%s",
 815     CommandOptionToMnemonic(MagickResourceOptions,(ssize_t) type),
 816       resource_request,resource_current,resource_limit);
 817 }
 818 \f
 819 /*
 820 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 821 %                                                                             %
 822 %                                                                             %
 823 %                                                                             %
 824 %    R e l i n q u i s h U n i q u e F i l e R e s o u r c e                  %
 825 %                                                                             %
 826 %                                                                             %
 827 %                                                                             %
 828 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 829 %
 830 %  RelinquishUniqueFileResource() relinquishes a unique file resource.
 831 %
 832 %  The format of the RelinquishUniqueFileResource() method is:
 833 %
 834 %      MagickBooleanType RelinquishUniqueFileResource(const char *path)
 835 %
 836 %  A description of each parameter follows:
 837 %
 838 %    o name: the name of the temporary resource.
 839 %
 840 */
 841 MagickExport MagickBooleanType RelinquishUniqueFileResource(const char *path)
 842 {
 843   char
 844     cache_path[MaxTextExtent];
 845
 846   assert(path != (const char *) NULL);
 847   (void) LogMagickEvent(ResourceEvent,GetMagickModule(),"%s",path);
 848   if (temporary_resources != (SplayTreeInfo *) NULL)
 849     {
 850       register char
 851         *p;
 852
 853       ResetSplayTreeIterator(temporary_resources);
 854       p=(char *) GetNextKeyInSplayTree(temporary_resources);
 855       while (p != (char *) NULL)
 856       {
 857         if (LocaleCompare(p,path) == 0)
 858           break;
 859         p=(char *) GetNextKeyInSplayTree(temporary_resources);
 860       }
 861       if (p != (char *) NULL)
 862         (void) DeleteNodeFromSplayTree(temporary_resources,p);
 863     }
 864   (void) CopyMagickString(cache_path,path,MaxTextExtent);
 865   AppendImageFormat("cache",cache_path);
 866   (void) remove_utf8(cache_path);
 867   return(remove_utf8(path) == 0 ? MagickTrue : MagickFalse);
 868 }
 869 \f
 870 /*
 871 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 872 %                                                                             %
 873 %                                                                             %
 874 %                                                                             %
 875 +   R e s o u r c e C o m p o n e n t G e n e s i s                           %
 876 %                                                                             %
 877 %                                                                             %
 878 %                                                                             %
 879 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 880 %
 881 %  ResourceComponentGenesis() instantiates the resource component.
 882 %
 883 %  The format of the ResourceComponentGenesis method is:
 884 %
 885 %      MagickBooleanType ResourceComponentGenesis(void)
 886 %
 887 */
 888
 889 static inline size_t MagickMax(const size_t x,const size_t y)
 890 {
 891   if (x > y)
 892     return(x);
 893   return(y);
 894 }
 895
 896 static inline MagickSizeType StringToSizeType(const char *string,
 897   const double interval)
 898 {
 899   double
 900     value;
 901
 902   value=SiPrefixToDoubleInterval(string,interval);
 903   if (value >= (double) MagickULLConstant(~0))
 904     return(MagickULLConstant(~0));
 905   return((MagickSizeType) value);
 906 }
 907
 908 MagickPrivate MagickBooleanType ResourceComponentGenesis(void)
 909 {
 910   char
 911     *limit;
 912
 913   MagickSizeType
 914     memory;
 915
 916   ssize_t
 917     files,
 918     pages,
 919     pagesize;
 920
 921   /*
 922     Set Magick resource limits.
 923   */
 924   AcquireSemaphoreInfo(&resource_semaphore);
 925   pagesize=GetMagickPageSize();
 926   pages=(-1);
 927 #if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_PHYS_PAGES)
 928   pages=(ssize_t) sysconf(_SC_PHYS_PAGES);
 929 #endif
 930   memory=(MagickSizeType) pages*pagesize;
 931   if ((pagesize <= 0) || (pages <= 0))
 932     memory=2048UL*1024UL*1024UL;
 933 #if defined(PixelCacheThreshold)
 934   memory=PixelCacheThreshold;
 935 #endif
 936   (void) SetMagickResourceLimit(AreaResource,2*memory);
 937   (void) SetMagickResourceLimit(MemoryResource,memory);
 938   (void) SetMagickResourceLimit(MapResource,2*memory);
 939   limit=GetEnvironmentValue("MAGICK_AREA_LIMIT");
 940   if (limit == (char *) NULL)
 941     limit=GetPolicyValue("area");
 942   if (limit != (char *) NULL)
 943     {
 944       (void) SetMagickResourceLimit(AreaResource,StringToSizeType(limit,100.0));
 945       limit=DestroyString(limit);
 946     }
 947   limit=GetEnvironmentValue("MAGICK_MEMORY_LIMIT");
 948   if (limit == (char *) NULL)
 949     limit=GetPolicyValue("memory");
 950   if (limit != (char *) NULL)
 951     {
 952       (void) SetMagickResourceLimit(MemoryResource,
 953         StringToSizeType(limit,100.0));
 954       limit=DestroyString(limit);
 955     }
 956   limit=GetEnvironmentValue("MAGICK_MAP_LIMIT");
 957   if (limit == (char *) NULL)
 958     limit=GetPolicyValue("map");
 959   if (limit != (char *) NULL)
 960     {
 961       (void) SetMagickResourceLimit(MapResource,StringToSizeType(limit,100.0));
 962       limit=DestroyString(limit);
 963     }
 964   limit=GetEnvironmentValue("MAGICK_DISK_LIMIT");
 965   if (limit == (char *) NULL)
 966     limit=GetPolicyValue("disk");
 967   if (limit != (char *) NULL)
 968     {
 969       (void) SetMagickResourceLimit(DiskResource,StringToSizeType(limit,100.0));
 970       limit=DestroyString(limit);
 971     }
 972   files=(-1);
 973 #if defined(MAGICKCORE_HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
 974   files=(ssize_t) sysconf(_SC_OPEN_MAX);
 975 #endif
 976 #if defined(MAGICKCORE_HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
 977   if (files < 0)
 978     {
 979       struct rlimit
 980         resources;
 981
 982       if (getrlimit(RLIMIT_NOFILE,&resources) != -1)
 983         files=(ssize_t) resources.rlim_cur;
 984   }
 985 #endif
 986 #if defined(MAGICKCORE_HAVE_GETDTABLESIZE) && defined(MAGICKCORE_POSIX_SUPPORT)
 987   if (files < 0)
 988     files=(ssize_t) getdtablesize();
 989 #endif
 990   if (files < 0)
 991     files=64;
 992   (void) SetMagickResourceLimit(FileResource,MagickMax((size_t)
 993     (3*files/4),64));
 994   limit=GetEnvironmentValue("MAGICK_FILE_LIMIT");
 995   if (limit == (char *) NULL)
 996     limit=GetPolicyValue("file");
 997   if (limit != (char *) NULL)
 998     {
 999       (void) SetMagickResourceLimit(FileResource,StringToSizeType(limit,
1000         100.0));
1001       limit=DestroyString(limit);
1002     }
1003   (void) SetMagickResourceLimit(ThreadResource,GetOpenMPMaximumThreads());
1004   limit=GetEnvironmentValue("MAGICK_THREAD_LIMIT");
1005   if (limit == (char *) NULL)
1006     limit=GetPolicyValue("thread");
1007   if (limit != (char *) NULL)
1008     {
1009       (void) SetMagickResourceLimit(ThreadResource,StringToSizeType(limit,
1010         100.0));
1011       limit=DestroyString(limit);
1012     }
1013   limit=GetEnvironmentValue("MAGICK_TIME_LIMIT");
1014   if (limit == (char *) NULL)
1015     limit=GetPolicyValue("time");
1016   if (limit != (char *) NULL)
1017     {
1018       (void) SetMagickResourceLimit(TimeResource,StringToSizeType(limit,100.0));
1019       limit=DestroyString(limit);
1020     }
1021   return(MagickTrue);
1022 }
1023 \f
1024 /*
1025 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1026 %                                                                             %
1027 %                                                                             %
1028 %                                                                             %
1029 +   R e s o u r c e C o m p o n e n t T e r m i n u s                         %
1030 %                                                                             %
1031 %                                                                             %
1032 %                                                                             %
1033 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1034 %
1035 %  ResourceComponentTerminus() destroys the resource component.
1036 %
1037 %  The format of the ResourceComponentTerminus() method is:
1038 %
1039 %      ResourceComponentTerminus(void)
1040 %
1041 */
1042 MagickPrivate void ResourceComponentTerminus(void)
1043 {
1044   if (resource_semaphore == (SemaphoreInfo *) NULL)
1045     AcquireSemaphoreInfo(&resource_semaphore);
1046   LockSemaphoreInfo(resource_semaphore);
1047   if (temporary_resources != (SplayTreeInfo *) NULL)
1048     temporary_resources=DestroySplayTree(temporary_resources);
1049   if (random_info != (RandomInfo *) NULL)
1050     random_info=DestroyRandomInfo(random_info);
1051   UnlockSemaphoreInfo(resource_semaphore);
1052   DestroySemaphoreInfo(&resource_semaphore);
1053 }
1054 \f
1055 /*
1056 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1057 %                                                                             %
1058 %                                                                             %
1059 %                                                                             %
1060 %   S e t M a g i c k R e s o u r c e L i m i t                               %
1061 %                                                                             %
1062 %                                                                             %
1063 %                                                                             %
1064 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1065 %
1066 %  SetMagickResourceLimit() sets the limit for a particular resource.
1067 %
1068 %  The format of the SetMagickResourceLimit() method is:
1069 %
1070 %      MagickBooleanType SetMagickResourceLimit(const ResourceType type,
1071 %        const MagickSizeType limit)
1072 %
1073 %  A description of each parameter follows:
1074 %
1075 %    o type: the type of resource.
1076 %
1077 %    o limit: the maximum limit for the resource.
1078 %
1079 */
1080
1081 static inline MagickSizeType MagickMin(const MagickSizeType x,
1082   const MagickSizeType y)
1083 {
1084   if (x < y)
1085     return(x);
1086   return(y);
1087 }
1088
1089 MagickExport MagickBooleanType SetMagickResourceLimit(const ResourceType type,
1090   const MagickSizeType limit)
1091 {
1092   char
1093     *value;
1094
1095   if (resource_semaphore == (SemaphoreInfo *) NULL)
1096     AcquireSemaphoreInfo(&resource_semaphore);
1097   LockSemaphoreInfo(resource_semaphore);
1098   value=(char *) NULL;
1099   switch (type)
1100   {
1101     case AreaResource:
1102     {
1103       resource_info.area_limit=limit;
1104       value=GetPolicyValue("area");
1105       if (value != (char *) NULL)
1106         resource_info.area_limit=MagickMin(limit,StringToSizeType(value,100.0));
1107       break;
1108     }
1109     case MemoryResource:
1110     {
1111       resource_info.memory_limit=limit;
1112       value=GetPolicyValue("memory");
1113       if (value != (char *) NULL)
1114         resource_info.memory_limit=MagickMin(limit,StringToSizeType(value,
1115           100.0));
1116       break;
1117     }
1118     case MapResource:
1119     {
1120       resource_info.map_limit=limit;
1121       value=GetPolicyValue("map");
1122       if (value != (char *) NULL)
1123         resource_info.map_limit=MagickMin(limit,StringToSizeType(value,100.0));
1124       break;
1125     }
1126     case DiskResource:
1127     {
1128       resource_info.disk_limit=limit;
1129       value=GetPolicyValue("disk");
1130       if (value != (char *) NULL)
1131         resource_info.disk_limit=MagickMin(limit,StringToSizeType(value,100.0));
1132       break;
1133     }
1134     case FileResource:
1135     {
1136       resource_info.file_limit=limit;
1137       value=GetPolicyValue("file");
1138       if (value != (char *) NULL)
1139         resource_info.file_limit=MagickMin(limit,StringToSizeType(value,100.0));
1140       break;
1141     }
1142     case ThreadResource:
1143     {
1144       resource_info.thread_limit=limit;
1145       value=GetPolicyValue("thread");
1146       if (value != (char *) NULL)
1147         resource_info.thread_limit=MagickMin(limit,StringToSizeType(value,
1148           100.0));
1149       if (resource_info.thread_limit > GetOpenMPMaximumThreads())
1150         resource_info.thread_limit=GetOpenMPMaximumThreads();
1151       break;
1152     }
1153     case TimeResource:
1154     {
1155       resource_info.time_limit=limit;
1156       value=GetPolicyValue("time");
1157       if (value != (char *) NULL)
1158         resource_info.time_limit=MagickMin(limit,StringToSizeType(value,100.0));
1159       break;
1160     }
1161     default:
1162       break;
1163   }
1164   if (value != (char *) NULL)
1165     value=DestroyString(value);
1166   UnlockSemaphoreInfo(resource_semaphore);
1167   return(MagickTrue);
1168 }