ReactOS  0.4.14-dev-358-gbef841c
jmemmgr.c File Reference
#include "jinclude.h"
#include "jpeglib.h"
#include "jmemsys.h"
Include dependency graph for jmemmgr.c:

Go to the source code of this file.

Classes

union  small_pool_struct
 
union  large_pool_struct
 
struct  my_memory_mgr
 
struct  jvirt_sarray_control
 
struct  jvirt_barray_control
 

Macros

#define JPEG_INTERNALS
 
#define AM_MEMORY_MANAGER   /* we define jvirt_Xarray_control structs */
 
#define ALIGN_TYPE   double
 
#define MIN_SLOP   50 /* greater than 0 to avoid futile looping */
 

Typedefs

typedef union small_pool_structsmall_pool_ptr
 
typedef union small_pool_struct small_pool_hdr
 
typedef union large_pool_struct FARlarge_pool_ptr
 
typedef union large_pool_struct large_pool_hdr
 
typedef my_memory_mgrmy_mem_ptr
 

Functions

char *getenv JPP ((const char *name))
 
 out_of_memory (j_common_ptr cinfo, int which)
 
 alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject)
 
 alloc_large (j_common_ptr cinfo, int pool_id, size_t sizeofobject)
 
 alloc_sarray (j_common_ptr cinfo, int pool_id, JDIMENSION samplesperrow, JDIMENSION numrows)
 
 alloc_barray (j_common_ptr cinfo, int pool_id, JDIMENSION blocksperrow, JDIMENSION numrows)
 
 request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION samplesperrow, JDIMENSION numrows, JDIMENSION maxaccess)
 
 request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION blocksperrow, JDIMENSION numrows, JDIMENSION maxaccess)
 
 realize_virt_arrays (j_common_ptr cinfo)
 
 do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)
 
 do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
 
 access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)
 
 access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)
 
 free_pool (j_common_ptr cinfo, int pool_id)
 
 self_destruct (j_common_ptr cinfo)
 
 jinit_memory_mgr (j_common_ptr cinfo)
 

Variables

static const size_t first_pool_slop [JPOOL_NUMPOOLS]
 
static const size_t extra_pool_slop [JPOOL_NUMPOOLS]
 

Macro Definition Documentation

◆ ALIGN_TYPE

#define ALIGN_TYPE   double

Definition at line 74 of file jmemmgr.c.

◆ AM_MEMORY_MANAGER

#define AM_MEMORY_MANAGER   /* we define jvirt_Xarray_control structs */

Definition at line 29 of file jmemmgr.c.

◆ JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 28 of file jmemmgr.c.

◆ MIN_SLOP

#define MIN_SLOP   50 /* greater than 0 to avoid futile looping */

Definition at line 254 of file jmemmgr.c.

Typedef Documentation

◆ large_pool_hdr

◆ large_pool_ptr

Definition at line 101 of file jmemmgr.c.

◆ my_mem_ptr

Definition at line 141 of file jmemmgr.c.

◆ small_pool_hdr

◆ small_pool_ptr

Definition at line 90 of file jmemmgr.c.

Function Documentation

◆ access_virt_barray()

access_virt_barray ( j_common_ptr  cinfo,
jvirt_barray_ptr  ptr,
JDIMENSION  start_row,
JDIMENSION  num_rows,
boolean  writable 
)

Definition at line 842 of file jmemmgr.c.

848 {
849  JDIMENSION end_row = start_row + num_rows;
850  JDIMENSION undef_row;
851 
852  /* debugging check */
853  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
854  ptr->mem_buffer == NULL)
855  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
856 
857  /* Make the desired part of the virtual array accessible */
858  if (start_row < ptr->cur_start_row ||
859  end_row > ptr->cur_start_row+ptr->rows_in_mem) {
860  if (! ptr->b_s_open)
861  ERREXIT(cinfo, JERR_VIRTUAL_BUG);
862  /* Flush old buffer contents if necessary */
863  if (ptr->dirty) {
864  do_barray_io(cinfo, ptr, TRUE);
865  ptr->dirty = FALSE;
866  }
867  /* Decide what part of virtual array to access.
868  * Algorithm: if target address > current window, assume forward scan,
869  * load starting at target address. If target address < current window,
870  * assume backward scan, load so that target area is top of window.
871  * Note that when switching from forward write to forward read, will have
872  * start_row = 0, so the limiting case applies and we load from 0 anyway.
873  */
874  if (start_row > ptr->cur_start_row) {
875  ptr->cur_start_row = start_row;
876  } else {
877  /* use long arithmetic here to avoid overflow & unsigned problems */
878  long ltemp;
879 
880  ltemp = (long) end_row - (long) ptr->rows_in_mem;
881  if (ltemp < 0)
882  ltemp = 0; /* don't fall off front end of file */
883  ptr->cur_start_row = (JDIMENSION) ltemp;
884  }
885  /* Read in the selected part of the array.
886  * During the initial write pass, we will do no actual read
887  * because the selected part is all undefined.
888  */
889  do_barray_io(cinfo, ptr, FALSE);
890  }
891  /* Ensure the accessed part of the array is defined; prezero if needed.
892  * To improve locality of access, we only prezero the part of the array
893  * that the caller is about to access, not the entire in-memory array.
894  */
895  if (ptr->first_undef_row < end_row) {
896  if (ptr->first_undef_row < start_row) {
897  if (writable) /* writer skipped over a section of array */
898  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
899  undef_row = start_row; /* but reader is allowed to read ahead */
900  } else {
901  undef_row = ptr->first_undef_row;
902  }
903  if (writable)
904  ptr->first_undef_row = end_row;
905  if (ptr->pre_zero) {
906  size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK);
907  undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
908  end_row -= ptr->cur_start_row;
909  while (undef_row < end_row) {
910  FMEMZERO((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
911  undef_row++;
912  }
913  } else {
914  if (! writable) /* reader looking at undefined data */
915  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
916  }
917  }
918  /* Flag the buffer dirty if caller will write in it */
919  if (writable)
920  ptr->dirty = TRUE;
921  /* Return address of proper part of the buffer */
922  return ptr->mem_buffer + (start_row - ptr->cur_start_row);
923 }
#define TRUE
Definition: types.h:120
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
do_barray_io(j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
Definition: jmemmgr.c:724
JCOEF JBLOCK[DCTSIZE2]
Definition: jpeglib.h:79
#define SIZEOF(_ar)
Definition: calc.h:97
#define FAR
Definition: guiddef.h:36
static PVOID ptr
Definition: dispmode.c:27
smooth NULL
Definition: ftsmooth.c:416
__kernel_size_t size_t
Definition: linux.h:237
int JSAMPARRAY int int num_rows
Definition: jpegint.h:412
#define long
Definition: qsort.c:33
unsigned int JDIMENSION
Definition: jmorecfg.h:229
#define FMEMZERO(target, size)
Definition: jpegint.h:361

Referenced by jinit_memory_mgr().

◆ access_virt_sarray()

access_virt_sarray ( j_common_ptr  cinfo,
jvirt_sarray_ptr  ptr,
JDIMENSION  start_row,
JDIMENSION  num_rows,
boolean  writable 
)

Definition at line 757 of file jmemmgr.c.

763 {
764  JDIMENSION end_row = start_row + num_rows;
765  JDIMENSION undef_row;
766 
767  /* debugging check */
768  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
769  ptr->mem_buffer == NULL)
770  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
771 
772  /* Make the desired part of the virtual array accessible */
773  if (start_row < ptr->cur_start_row ||
774  end_row > ptr->cur_start_row+ptr->rows_in_mem) {
775  if (! ptr->b_s_open)
776  ERREXIT(cinfo, JERR_VIRTUAL_BUG);
777  /* Flush old buffer contents if necessary */
778  if (ptr->dirty) {
779  do_sarray_io(cinfo, ptr, TRUE);
780  ptr->dirty = FALSE;
781  }
782  /* Decide what part of virtual array to access.
783  * Algorithm: if target address > current window, assume forward scan,
784  * load starting at target address. If target address < current window,
785  * assume backward scan, load so that target area is top of window.
786  * Note that when switching from forward write to forward read, will have
787  * start_row = 0, so the limiting case applies and we load from 0 anyway.
788  */
789  if (start_row > ptr->cur_start_row) {
790  ptr->cur_start_row = start_row;
791  } else {
792  /* use long arithmetic here to avoid overflow & unsigned problems */
793  long ltemp;
794 
795  ltemp = (long) end_row - (long) ptr->rows_in_mem;
796  if (ltemp < 0)
797  ltemp = 0; /* don't fall off front end of file */
798  ptr->cur_start_row = (JDIMENSION) ltemp;
799  }
800  /* Read in the selected part of the array.
801  * During the initial write pass, we will do no actual read
802  * because the selected part is all undefined.
803  */
804  do_sarray_io(cinfo, ptr, FALSE);
805  }
806  /* Ensure the accessed part of the array is defined; prezero if needed.
807  * To improve locality of access, we only prezero the part of the array
808  * that the caller is about to access, not the entire in-memory array.
809  */
810  if (ptr->first_undef_row < end_row) {
811  if (ptr->first_undef_row < start_row) {
812  if (writable) /* writer skipped over a section of array */
813  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
814  undef_row = start_row; /* but reader is allowed to read ahead */
815  } else {
816  undef_row = ptr->first_undef_row;
817  }
818  if (writable)
819  ptr->first_undef_row = end_row;
820  if (ptr->pre_zero) {
821  size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE);
822  undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
823  end_row -= ptr->cur_start_row;
824  while (undef_row < end_row) {
825  FMEMZERO((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
826  undef_row++;
827  }
828  } else {
829  if (! writable) /* reader looking at undefined data */
830  ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
831  }
832  }
833  /* Flag the buffer dirty if caller will write in it */
834  if (writable)
835  ptr->dirty = TRUE;
836  /* Return address of proper part of the buffer */
837  return ptr->mem_buffer + (start_row - ptr->cur_start_row);
838 }
#define TRUE
Definition: types.h:120
char JSAMPLE
Definition: jmorecfg.h:74
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
#define SIZEOF(_ar)
Definition: calc.h:97
#define FAR
Definition: guiddef.h:36
static PVOID ptr
Definition: dispmode.c:27
smooth NULL
Definition: ftsmooth.c:416
do_sarray_io(j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)
Definition: jmemmgr.c:691
__kernel_size_t size_t
Definition: linux.h:237
int JSAMPARRAY int int num_rows
Definition: jpegint.h:412
#define long
Definition: qsort.c:33
unsigned int JDIMENSION
Definition: jmorecfg.h:229
#define FMEMZERO(target, size)
Definition: jpegint.h:361

Referenced by jinit_memory_mgr().

◆ alloc_barray()

alloc_barray ( j_common_ptr  cinfo,
int  pool_id,
JDIMENSION  blocksperrow,
JDIMENSION  numrows 
)

Definition at line 444 of file jmemmgr.c.

447 {
448  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
450  JBLOCKROW workspace;
451  JDIMENSION rowsperchunk, currow, i;
452  long ltemp;
453 
454  /* Calculate max # of rows allowed in one allocation chunk */
456  ((long) blocksperrow * SIZEOF(JBLOCK));
457  if (ltemp <= 0)
458  ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
459  if (ltemp < (long) numrows)
460  rowsperchunk = (JDIMENSION) ltemp;
461  else
462  rowsperchunk = numrows;
463  mem->last_rowsperchunk = rowsperchunk;
464 
465  /* Get space for row pointers (small object) */
466  result = (JBLOCKARRAY) alloc_small(cinfo, pool_id,
467  (size_t) (numrows * SIZEOF(JBLOCKROW)));
468 
469  /* Get the rows themselves (large objects) */
470  currow = 0;
471  while (currow < numrows) {
472  rowsperchunk = MIN(rowsperchunk, numrows - currow);
473  workspace = (JBLOCKROW) alloc_large(cinfo, pool_id,
474  (size_t) ((size_t) rowsperchunk * (size_t) blocksperrow
475  * SIZEOF(JBLOCK)));
476  for (i = rowsperchunk; i > 0; i--) {
477  result[currow++] = workspace;
478  workspace += blocksperrow;
479  }
480  }
481 
482  return result;
483 }
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
alloc_small(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:258
JCOEF JBLOCK[DCTSIZE2]
Definition: jpeglib.h:79
JBLOCKROW * JBLOCKARRAY
Definition: jpeglib.h:81
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
alloc_large(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:343
T MIN(T a, T b)
Definition: polytest.cpp:79
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define SIZEOF(_ar)
Definition: calc.h:97
__kernel_size_t size_t
Definition: linux.h:237
JBLOCK FAR * JBLOCKROW
Definition: jpeglib.h:80
Definition: mem.c:156
unsigned int JDIMENSION
Definition: jmorecfg.h:229
#define MAX_ALLOC_CHUNK
Definition: jmemsys.h:78
GLuint64EXT * result
Definition: glext.h:11304

Referenced by jinit_memory_mgr(), and realize_virt_arrays().

◆ alloc_large()

alloc_large ( j_common_ptr  cinfo,
int  pool_id,
size_t  sizeofobject 
)

Definition at line 343 of file jmemmgr.c.

345 {
346  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
347  large_pool_ptr hdr_ptr;
348  size_t odd_bytes;
349 
350  /* Check for unsatisfiable request (do now to ensure no overflow below) */
352  out_of_memory(cinfo, 3); /* request exceeds malloc's ability */
353 
354  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */
355  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);
356  if (odd_bytes > 0)
357  sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;
358 
359  /* Always make a new pool */
360  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
361  ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
362 
363  hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject +
365  if (hdr_ptr == NULL)
366  out_of_memory(cinfo, 4); /* jpeg_get_large failed */
367  mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr);
368 
369  /* Success, initialize the new pool header and add to list */
370  hdr_ptr->hdr.next = mem->large_list[pool_id];
371  /* We maintain space counts in each pool header for statistical purposes,
372  * even though they are not needed for allocation.
373  */
374  hdr_ptr->hdr.bytes_used = sizeofobject;
375  hdr_ptr->hdr.bytes_left = 0;
376  mem->large_list[pool_id] = hdr_ptr;
377 
378  return (void FAR *) (hdr_ptr + 1); /* point to first data byte in pool */
379 }
jpeg_get_large(j_common_ptr cinfo, size_t sizeofobject)
Definition: jmemansi.c:56
out_of_memory(j_common_ptr cinfo, int which)
Definition: jmemmgr.c:218
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
#define ALIGN_TYPE
Definition: jmemmgr.c:74
size_t sizeofobject
Definition: jmemsys.h:47
#define SIZEOF(_ar)
Definition: calc.h:97
union large_pool_struct FAR * large_pool_ptr
Definition: jmemmgr.c:101
#define FAR
Definition: guiddef.h:36
smooth NULL
Definition: ftsmooth.c:416
if(!(yy_init))
Definition: macro.lex.yy.c:714
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
#define JPOOL_NUMPOOLS
Definition: jpeglib.h:809
Definition: mem.c:156
#define MAX_ALLOC_CHUNK
Definition: jmemsys.h:78

Referenced by alloc_barray(), alloc_sarray(), and jinit_memory_mgr().

◆ alloc_sarray()

alloc_sarray ( j_common_ptr  cinfo,
int  pool_id,
JDIMENSION  samplesperrow,
JDIMENSION  numrows 
)

Definition at line 396 of file jmemmgr.c.

399 {
400  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
402  JSAMPROW workspace;
403  JDIMENSION rowsperchunk, currow, i;
404  long ltemp;
405 
406  /* Calculate max # of rows allowed in one allocation chunk */
408  ((long) samplesperrow * SIZEOF(JSAMPLE));
409  if (ltemp <= 0)
410  ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
411  if (ltemp < (long) numrows)
412  rowsperchunk = (JDIMENSION) ltemp;
413  else
414  rowsperchunk = numrows;
415  mem->last_rowsperchunk = rowsperchunk;
416 
417  /* Get space for row pointers (small object) */
418  result = (JSAMPARRAY) alloc_small(cinfo, pool_id,
419  (size_t) (numrows * SIZEOF(JSAMPROW)));
420 
421  /* Get the rows themselves (large objects) */
422  currow = 0;
423  while (currow < numrows) {
424  rowsperchunk = MIN(rowsperchunk, numrows - currow);
425  workspace = (JSAMPROW) alloc_large(cinfo, pool_id,
426  (size_t) ((size_t) rowsperchunk * (size_t) samplesperrow
427  * SIZEOF(JSAMPLE)));
428  for (i = rowsperchunk; i > 0; i--) {
429  result[currow++] = workspace;
430  workspace += samplesperrow;
431  }
432  }
433 
434  return result;
435 }
char JSAMPLE
Definition: jmorecfg.h:74
JSAMPLE FAR * JSAMPROW
Definition: jpeglib.h:75
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
alloc_small(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:258
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
alloc_large(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:343
T MIN(T a, T b)
Definition: polytest.cpp:79
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define SIZEOF(_ar)
Definition: calc.h:97
__kernel_size_t size_t
Definition: linux.h:237
JSAMPROW * JSAMPARRAY
Definition: jpeglib.h:76
Definition: mem.c:156
unsigned int JDIMENSION
Definition: jmorecfg.h:229
#define MAX_ALLOC_CHUNK
Definition: jmemsys.h:78
GLuint64EXT * result
Definition: glext.h:11304

Referenced by jinit_memory_mgr(), and realize_virt_arrays().

◆ alloc_small()

alloc_small ( j_common_ptr  cinfo,
int  pool_id,
size_t  sizeofobject 
)

Definition at line 258 of file jmemmgr.c.

260 {
261  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
262  small_pool_ptr hdr_ptr, prev_hdr_ptr;
263  char * data_ptr;
264  size_t odd_bytes, min_request, slop;
265 
266  /* Check for unsatisfiable request (do now to ensure no overflow below) */
268  out_of_memory(cinfo, 1); /* request exceeds malloc's ability */
269 
270  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */
271  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);
272  if (odd_bytes > 0)
273  sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;
274 
275  /* See if space is available in any existing pool */
276  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
277  ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
278  prev_hdr_ptr = NULL;
279  hdr_ptr = mem->small_list[pool_id];
280  while (hdr_ptr != NULL) {
281  if (hdr_ptr->hdr.bytes_left >= sizeofobject)
282  break; /* found pool with enough space */
283  prev_hdr_ptr = hdr_ptr;
284  hdr_ptr = hdr_ptr->hdr.next;
285  }
286 
287  /* Time to make a new pool? */
288  if (hdr_ptr == NULL) {
289  /* min_request is what we need now, slop is what will be leftover */
290  min_request = sizeofobject + SIZEOF(small_pool_hdr);
291  if (prev_hdr_ptr == NULL) /* first pool in class? */
292  slop = first_pool_slop[pool_id];
293  else
294  slop = extra_pool_slop[pool_id];
295  /* Don't ask for more than MAX_ALLOC_CHUNK */
296  if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request))
297  slop = (size_t) (MAX_ALLOC_CHUNK-min_request);
298  /* Try to get space, if fail reduce slop and try again */
299  for (;;) {
300  hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop);
301  if (hdr_ptr != NULL)
302  break;
303  slop /= 2;
304  if (slop < MIN_SLOP) /* give up when it gets real small */
305  out_of_memory(cinfo, 2); /* jpeg_get_small failed */
306  }
307  mem->total_space_allocated += min_request + slop;
308  /* Success, initialize the new pool header and add to end of list */
309  hdr_ptr->hdr.next = NULL;
310  hdr_ptr->hdr.bytes_used = 0;
311  hdr_ptr->hdr.bytes_left = sizeofobject + slop;
312  if (prev_hdr_ptr == NULL) /* first pool in class? */
313  mem->small_list[pool_id] = hdr_ptr;
314  else
315  prev_hdr_ptr->hdr.next = hdr_ptr;
316  }
317 
318  /* OK, allocate the object from the current pool */
319  data_ptr = (char *) (hdr_ptr + 1); /* point to first data byte in pool */
320  data_ptr += hdr_ptr->hdr.bytes_used; /* point to place for object */
321  hdr_ptr->hdr.bytes_used += sizeofobject;
322  hdr_ptr->hdr.bytes_left -= sizeofobject;
323 
324  return (void *) data_ptr;
325 }
jpeg_get_small(j_common_ptr cinfo, size_t sizeofobject)
Definition: jmemansi.c:36
out_of_memory(j_common_ptr cinfo, int which)
Definition: jmemmgr.c:218
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
#define ALIGN_TYPE
Definition: jmemmgr.c:74
size_t sizeofobject
Definition: jmemsys.h:47
#define SIZEOF(_ar)
Definition: calc.h:97
smooth NULL
Definition: ftsmooth.c:416
union small_pool_struct * small_pool_ptr
Definition: jmemmgr.c:90
__kernel_size_t size_t
Definition: linux.h:237
if(!(yy_init))
Definition: macro.lex.yy.c:714
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
static const size_t first_pool_slop[JPOOL_NUMPOOLS]
Definition: jmemmgr.c:242
#define JPOOL_NUMPOOLS
Definition: jpeglib.h:809
struct small_pool_struct::@172 hdr
static const size_t extra_pool_slop[JPOOL_NUMPOOLS]
Definition: jmemmgr.c:248
Definition: mem.c:156
#define MAX_ALLOC_CHUNK
Definition: jmemsys.h:78
#define MIN_SLOP
Definition: jmemmgr.c:254

Referenced by alloc_barray(), alloc_sarray(), jinit_memory_mgr(), request_virt_barray(), and request_virt_sarray().

◆ do_barray_io()

do_barray_io ( j_common_ptr  cinfo,
jvirt_barray_ptr  ptr,
boolean  writing 
)

Definition at line 724 of file jmemmgr.c.

726 {
727  long bytesperrow, file_offset, byte_count, rows, thisrow, i;
728 
729  bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK);
730  file_offset = ptr->cur_start_row * bytesperrow;
731  /* Loop to read or write each allocation chunk in mem_buffer */
732  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
733  /* One chunk, but check for short chunk at end of buffer */
734  rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
735  /* Transfer no more than is currently defined */
736  thisrow = (long) ptr->cur_start_row + i;
737  rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
738  /* Transfer no more than fits in file */
739  rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
740  if (rows <= 0) /* this chunk might be past end of file! */
741  break;
742  byte_count = rows * bytesperrow;
743  if (writing)
744  (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
745  (void FAR *) ptr->mem_buffer[i],
746  file_offset, byte_count);
747  else
748  (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
749  (void FAR *) ptr->mem_buffer[i],
750  file_offset, byte_count);
751  file_offset += byte_count;
752  }
753 }
JCOEF JBLOCK[DCTSIZE2]
Definition: jpeglib.h:79
T MIN(T a, T b)
Definition: polytest.cpp:79
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define SIZEOF(_ar)
Definition: calc.h:97
#define FAR
Definition: guiddef.h:36
static PVOID ptr
Definition: dispmode.c:27
#define long
Definition: qsort.c:33

Referenced by access_virt_barray().

◆ do_sarray_io()

do_sarray_io ( j_common_ptr  cinfo,
jvirt_sarray_ptr  ptr,
boolean  writing 
)

Definition at line 691 of file jmemmgr.c.

693 {
694  long bytesperrow, file_offset, byte_count, rows, thisrow, i;
695 
696  bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE);
697  file_offset = ptr->cur_start_row * bytesperrow;
698  /* Loop to read or write each allocation chunk in mem_buffer */
699  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
700  /* One chunk, but check for short chunk at end of buffer */
701  rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
702  /* Transfer no more than is currently defined */
703  thisrow = (long) ptr->cur_start_row + i;
704  rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
705  /* Transfer no more than fits in file */
706  rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
707  if (rows <= 0) /* this chunk might be past end of file! */
708  break;
709  byte_count = rows * bytesperrow;
710  if (writing)
711  (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
712  (void FAR *) ptr->mem_buffer[i],
713  file_offset, byte_count);
714  else
715  (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
716  (void FAR *) ptr->mem_buffer[i],
717  file_offset, byte_count);
718  file_offset += byte_count;
719  }
720 }
char JSAMPLE
Definition: jmorecfg.h:74
T MIN(T a, T b)
Definition: polytest.cpp:79
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define SIZEOF(_ar)
Definition: calc.h:97
#define FAR
Definition: guiddef.h:36
static PVOID ptr
Definition: dispmode.c:27
#define long
Definition: qsort.c:33

Referenced by access_virt_sarray().

◆ free_pool()

free_pool ( j_common_ptr  cinfo,
int  pool_id 
)

Definition at line 931 of file jmemmgr.c.

932 {
933  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
934  small_pool_ptr shdr_ptr;
935  large_pool_ptr lhdr_ptr;
936  size_t space_freed;
937 
938  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
939  ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
940 
941 #ifdef MEM_STATS
942  if (cinfo->err->trace_level > 1)
943  print_mem_stats(cinfo, pool_id); /* print pool's memory usage statistics */
944 #endif
945 
946  /* If freeing IMAGE pool, close any virtual arrays first */
947  if (pool_id == JPOOL_IMAGE) {
948  jvirt_sarray_ptr sptr;
949  jvirt_barray_ptr bptr;
950 
951  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
952  if (sptr->b_s_open) { /* there may be no backing store */
953  sptr->b_s_open = FALSE; /* prevent recursive close if error */
954  (*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info);
955  }
956  }
957  mem->virt_sarray_list = NULL;
958  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
959  if (bptr->b_s_open) { /* there may be no backing store */
960  bptr->b_s_open = FALSE; /* prevent recursive close if error */
961  (*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info);
962  }
963  }
964  mem->virt_barray_list = NULL;
965  }
966 
967  /* Release large objects */
968  lhdr_ptr = mem->large_list[pool_id];
969  mem->large_list[pool_id] = NULL;
970 
971  while (lhdr_ptr != NULL) {
972  large_pool_ptr next_lhdr_ptr = lhdr_ptr->hdr.next;
973  space_freed = lhdr_ptr->hdr.bytes_used +
974  lhdr_ptr->hdr.bytes_left +
976  jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed);
977  mem->total_space_allocated -= space_freed;
978  lhdr_ptr = next_lhdr_ptr;
979  }
980 
981  /* Release small objects */
982  shdr_ptr = mem->small_list[pool_id];
983  mem->small_list[pool_id] = NULL;
984 
985  while (shdr_ptr != NULL) {
986  small_pool_ptr next_shdr_ptr = shdr_ptr->hdr.next;
987  space_freed = shdr_ptr->hdr.bytes_used +
988  shdr_ptr->hdr.bytes_left +
990  jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed);
991  mem->total_space_allocated -= space_freed;
992  shdr_ptr = next_shdr_ptr;
993  }
994 }
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
jvirt_sarray_ptr next
Definition: jmemmgr.c:163
#define SIZEOF(_ar)
Definition: calc.h:97
#define JPOOL_IMAGE
Definition: jpeglib.h:808
union large_pool_struct FAR * large_pool_ptr
Definition: jmemmgr.c:101
#define FAR
Definition: guiddef.h:36
smooth NULL
Definition: ftsmooth.c:416
jvirt_barray_ptr next
Definition: jmemmgr.c:179
jpeg_free_large(j_common_ptr cinfo, void FAR *object, size_t sizeofobject)
Definition: jmemansi.c:62
if(!(yy_init))
Definition: macro.lex.yy.c:714
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
#define JPOOL_NUMPOOLS
Definition: jpeglib.h:809
backing_store_info b_s_info
Definition: jmemmgr.c:180
struct small_pool_struct::@172 hdr
jpeg_free_small(j_common_ptr cinfo, void *object, size_t sizeofobject)
Definition: jmemansi.c:42
backing_store_info b_s_info
Definition: jmemmgr.c:164
Definition: mem.c:156

Referenced by jinit_memory_mgr(), and self_destruct().

◆ jinit_memory_mgr()

jinit_memory_mgr ( j_common_ptr  cinfo)

Definition at line 1029 of file jmemmgr.c.

1030 {
1031  my_mem_ptr mem;
1032  long max_to_use;
1033  int pool;
1034  size_t test_mac;
1035 
1036  cinfo->mem = NULL; /* for safety if init fails */
1037 
1038  /* Check for configuration errors.
1039  * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably
1040  * doesn't reflect any real hardware alignment requirement.
1041  * The test is a little tricky: for X>0, X and X-1 have no one-bits
1042  * in common if and only if X is a power of 2, ie has only one one-bit.
1043  * Some compilers may give an "unreachable code" warning here; ignore it.
1044  */
1045  if ((SIZEOF(ALIGN_TYPE) & (SIZEOF(ALIGN_TYPE)-1)) != 0)
1046  ERREXIT(cinfo, JERR_BAD_ALIGN_TYPE);
1047  /* MAX_ALLOC_CHUNK must be representable as type size_t, and must be
1048  * a multiple of SIZEOF(ALIGN_TYPE).
1049  * Again, an "unreachable code" warning may be ignored here.
1050  * But a "constant too large" warning means you need to fix MAX_ALLOC_CHUNK.
1051  */
1053  if ((long) test_mac != MAX_ALLOC_CHUNK ||
1054  (MAX_ALLOC_CHUNK % SIZEOF(ALIGN_TYPE)) != 0)
1055  ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK);
1056 
1057  max_to_use = jpeg_mem_init(cinfo); /* system-dependent initialization */
1058 
1059  /* Attempt to allocate memory manager's control block */
1061 
1062  if (mem == NULL) {
1063  jpeg_mem_term(cinfo); /* system-dependent cleanup */
1064  ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0);
1065  }
1066 
1067  /* OK, fill in the method pointers */
1068  mem->pub.alloc_small = alloc_small;
1069  mem->pub.alloc_large = alloc_large;
1070  mem->pub.alloc_sarray = alloc_sarray;
1071  mem->pub.alloc_barray = alloc_barray;
1072  mem->pub.request_virt_sarray = request_virt_sarray;
1073  mem->pub.request_virt_barray = request_virt_barray;
1074  mem->pub.realize_virt_arrays = realize_virt_arrays;
1075  mem->pub.access_virt_sarray = access_virt_sarray;
1076  mem->pub.access_virt_barray = access_virt_barray;
1077  mem->pub.free_pool = free_pool;
1078  mem->pub.self_destruct = self_destruct;
1079 
1080  /* Make MAX_ALLOC_CHUNK accessible to other modules */
1081  mem->pub.max_alloc_chunk = MAX_ALLOC_CHUNK;
1082 
1083  /* Initialize working state */
1084  mem->pub.max_memory_to_use = max_to_use;
1085 
1086  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {
1087  mem->small_list[pool] = NULL;
1088  mem->large_list[pool] = NULL;
1089  }
1090  mem->virt_sarray_list = NULL;
1091  mem->virt_barray_list = NULL;
1092 
1093  mem->total_space_allocated = SIZEOF(my_memory_mgr);
1094 
1095  /* Declare ourselves open for business */
1096  cinfo->mem = & mem->pub;
1097 
1098  /* Check for an environment variable JPEGMEM; if found, override the
1099  * default max_memory setting from jpeg_mem_init. Note that the
1100  * surrounding application may again override this value.
1101  * If your system doesn't support getenv(), define NO_GETENV to disable
1102  * this feature.
1103  */
1104 #ifndef NO_GETENV
1105  { char * memenv;
1106 
1107  if ((memenv = getenv("JPEGMEM")) != NULL) {
1108  char ch = 'x';
1109 
1110  if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) {
1111  if (ch == 'm' || ch == 'M')
1112  max_to_use *= 1000L;
1113  mem->pub.max_memory_to_use = max_to_use * 1000L;
1114  }
1115  }
1116  }
1117 #endif
1118 
1119 }
request_virt_barray(j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION blocksperrow, JDIMENSION numrows, JDIMENSION maxaccess)
Definition: jmemmgr.c:554
jpeg_get_small(j_common_ptr cinfo, size_t sizeofobject)
Definition: jmemansi.c:36
#define ERREXIT(msg)
Definition: rdjpgcom.c:72
alloc_small(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:258
alloc_sarray(j_common_ptr cinfo, int pool_id, JDIMENSION samplesperrow, JDIMENSION numrows)
Definition: jmemmgr.c:396
jpeg_mem_term(j_common_ptr cinfo)
Definition: jmemansi.c:164
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
alloc_large(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:343
free_pool(j_common_ptr cinfo, int pool_id)
Definition: jmemmgr.c:931
#define ALIGN_TYPE
Definition: jmemmgr.c:74
self_destruct(j_common_ptr cinfo)
Definition: jmemmgr.c:1003
#define SIZEOF(_ar)
Definition: calc.h:97
smooth NULL
Definition: ftsmooth.c:416
_Check_return_ _CRTIMP int __cdecl sscanf(_In_z_ const char *_Src, _In_z_ _Scanf_format_string_ const char *_Format,...)
__kernel_size_t size_t
Definition: linux.h:237
access_virt_sarray(j_common_ptr cinfo, jvirt_sarray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)
Definition: jmemmgr.c:757
static const WCHAR L[]
Definition: oid.c:1250
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
#define JPOOL_NUMPOOLS
Definition: jpeglib.h:809
_Check_return_ char *__cdecl getenv(_In_z_ const char *_VarName)
jpeg_mem_init(j_common_ptr cinfo)
Definition: jmemansi.c:158
realize_virt_arrays(j_common_ptr cinfo)
Definition: jmemmgr.c:584
alloc_barray(j_common_ptr cinfo, int pool_id, JDIMENSION blocksperrow, JDIMENSION numrows)
Definition: jmemmgr.c:444
Definition: mem.c:156
request_virt_sarray(j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION samplesperrow, JDIMENSION numrows, JDIMENSION maxaccess)
Definition: jmemmgr.c:524
#define JPOOL_PERMANENT
Definition: jpeglib.h:807
#define MAX_ALLOC_CHUNK
Definition: jmemsys.h:78
static void test_mac(void)
Definition: rsaenh.c:1849
access_virt_barray(j_common_ptr cinfo, jvirt_barray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)
Definition: jmemmgr.c:842

Referenced by jpeg_CreateCompress(), and jpeg_CreateDecompress().

◆ JPP()

char* getenv JPP ( (const char *name )

◆ out_of_memory()

out_of_memory ( j_common_ptr  cinfo,
int  which 
)

Definition at line 218 of file jmemmgr.c.

221 {
222 #ifdef MEM_STATS
223  cinfo->err->trace_level = 2; /* force self_destruct to report stats */
224 #endif
225  ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which);
226 }
static GLenum which
Definition: wgl_font.c:159
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212

Referenced by alloc_large(), alloc_proxy_textures(), and alloc_small().

◆ realize_virt_arrays()

realize_virt_arrays ( j_common_ptr  cinfo)

Definition at line 584 of file jmemmgr.c.

586 {
587  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
588  long space_per_minheight, maximum_space, avail_mem;
589  long minheights, max_minheights;
590  jvirt_sarray_ptr sptr;
591  jvirt_barray_ptr bptr;
592 
593  /* Compute the minimum space needed (maxaccess rows in each buffer)
594  * and the maximum space needed (full image height in each buffer).
595  * These may be of use to the system-dependent jpeg_mem_available routine.
596  */
597  space_per_minheight = 0;
598  maximum_space = 0;
599  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
600  if (sptr->mem_buffer == NULL) { /* if not realized yet */
601  space_per_minheight += (long) sptr->maxaccess *
602  (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
603  maximum_space += (long) sptr->rows_in_array *
604  (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
605  }
606  }
607  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
608  if (bptr->mem_buffer == NULL) { /* if not realized yet */
609  space_per_minheight += (long) bptr->maxaccess *
610  (long) bptr->blocksperrow * SIZEOF(JBLOCK);
611  maximum_space += (long) bptr->rows_in_array *
612  (long) bptr->blocksperrow * SIZEOF(JBLOCK);
613  }
614  }
615 
616  if (space_per_minheight <= 0)
617  return; /* no unrealized arrays, no work */
618 
619  /* Determine amount of memory to actually use; this is system-dependent. */
620  avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space,
621  mem->total_space_allocated);
622 
623  /* If the maximum space needed is available, make all the buffers full
624  * height; otherwise parcel it out with the same number of minheights
625  * in each buffer.
626  */
627  if (avail_mem >= maximum_space)
628  max_minheights = 1000000000L;
629  else {
630  max_minheights = avail_mem / space_per_minheight;
631  /* If there doesn't seem to be enough space, try to get the minimum
632  * anyway. This allows a "stub" implementation of jpeg_mem_available().
633  */
634  if (max_minheights <= 0)
635  max_minheights = 1;
636  }
637 
638  /* Allocate the in-memory buffers and initialize backing store as needed. */
639 
640  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
641  if (sptr->mem_buffer == NULL) { /* if not realized yet */
642  minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L;
643  if (minheights <= max_minheights) {
644  /* This buffer fits in memory */
645  sptr->rows_in_mem = sptr->rows_in_array;
646  } else {
647  /* It doesn't fit in memory, create backing store. */
648  sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);
649  jpeg_open_backing_store(cinfo, & sptr->b_s_info,
650  (long) sptr->rows_in_array *
651  (long) sptr->samplesperrow *
652  (long) SIZEOF(JSAMPLE));
653  sptr->b_s_open = TRUE;
654  }
655  sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE,
656  sptr->samplesperrow, sptr->rows_in_mem);
657  sptr->rowsperchunk = mem->last_rowsperchunk;
658  sptr->cur_start_row = 0;
659  sptr->first_undef_row = 0;
660  sptr->dirty = FALSE;
661  }
662  }
663 
664  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
665  if (bptr->mem_buffer == NULL) { /* if not realized yet */
666  minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L;
667  if (minheights <= max_minheights) {
668  /* This buffer fits in memory */
669  bptr->rows_in_mem = bptr->rows_in_array;
670  } else {
671  /* It doesn't fit in memory, create backing store. */
672  bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);
673  jpeg_open_backing_store(cinfo, & bptr->b_s_info,
674  (long) bptr->rows_in_array *
675  (long) bptr->blocksperrow *
676  (long) SIZEOF(JBLOCK));
677  bptr->b_s_open = TRUE;
678  }
679  bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE,
680  bptr->blocksperrow, bptr->rows_in_mem);
681  bptr->rowsperchunk = mem->last_rowsperchunk;
682  bptr->cur_start_row = 0;
683  bptr->first_undef_row = 0;
684  bptr->dirty = FALSE;
685  }
686  }
687 }
#define TRUE
Definition: types.h:120
char JSAMPLE
Definition: jmorecfg.h:74
alloc_sarray(j_common_ptr cinfo, int pool_id, JDIMENSION samplesperrow, JDIMENSION numrows)
Definition: jmemmgr.c:396
JCOEF JBLOCK[DCTSIZE2]
Definition: jpeglib.h:79
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
#define SIZEOF(_ar)
Definition: calc.h:97
#define JPOOL_IMAGE
Definition: jpeglib.h:808
smooth NULL
Definition: ftsmooth.c:416
jpeg_open_backing_store(j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed)
Definition: jmemansi.c:141
#define for
Definition: utility.h:88
static const WCHAR L[]
Definition: oid.c:1250
jpeg_mem_available(j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated)
Definition: jmemansi.c:81
#define long
Definition: qsort.c:33
alloc_barray(j_common_ptr cinfo, int pool_id, JDIMENSION blocksperrow, JDIMENSION numrows)
Definition: jmemmgr.c:444
Definition: mem.c:156
unsigned int JDIMENSION
Definition: jmorecfg.h:229

Referenced by jinit_memory_mgr().

◆ request_virt_barray()

request_virt_barray ( j_common_ptr  cinfo,
int  pool_id,
boolean  pre_zero,
JDIMENSION  blocksperrow,
JDIMENSION  numrows,
JDIMENSION  maxaccess 
)

Definition at line 554 of file jmemmgr.c.

558 {
559  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
561 
562  /* Only IMAGE-lifetime virtual arrays are currently supported */
563  if (pool_id != JPOOL_IMAGE)
564  ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
565 
566  /* get control block */
567  result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id,
568  SIZEOF(struct jvirt_barray_control));
569 
570  result->mem_buffer = NULL; /* marks array not yet realized */
571  result->rows_in_array = numrows;
572  result->blocksperrow = blocksperrow;
573  result->maxaccess = maxaccess;
574  result->pre_zero = pre_zero;
575  result->b_s_open = FALSE; /* no associated backing-store object */
576  result->next = mem->virt_barray_list; /* add to list of virtual arrays */
577  mem->virt_barray_list = result;
578 
579  return result;
580 }
alloc_small(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:258
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
#define SIZEOF(_ar)
Definition: calc.h:97
#define JPOOL_IMAGE
Definition: jpeglib.h:808
smooth NULL
Definition: ftsmooth.c:416
if(!(yy_init))
Definition: macro.lex.yy.c:714
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
struct jvirt_barray_control * jvirt_barray_ptr
Definition: jpeglib.h:812
Definition: mem.c:156
GLuint64EXT * result
Definition: glext.h:11304

Referenced by jinit_memory_mgr().

◆ request_virt_sarray()

request_virt_sarray ( j_common_ptr  cinfo,
int  pool_id,
boolean  pre_zero,
JDIMENSION  samplesperrow,
JDIMENSION  numrows,
JDIMENSION  maxaccess 
)

Definition at line 524 of file jmemmgr.c.

528 {
529  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
531 
532  /* Only IMAGE-lifetime virtual arrays are currently supported */
533  if (pool_id != JPOOL_IMAGE)
534  ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */
535 
536  /* get control block */
537  result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id,
538  SIZEOF(struct jvirt_sarray_control));
539 
540  result->mem_buffer = NULL; /* marks array not yet realized */
541  result->rows_in_array = numrows;
542  result->samplesperrow = samplesperrow;
543  result->maxaccess = maxaccess;
544  result->pre_zero = pre_zero;
545  result->b_s_open = FALSE; /* no associated backing-store object */
546  result->next = mem->virt_sarray_list; /* add to list of virtual arrays */
547  mem->virt_sarray_list = result;
548 
549  return result;
550 }
alloc_small(j_common_ptr cinfo, int pool_id, size_t sizeofobject)
Definition: jmemmgr.c:258
my_memory_mgr * my_mem_ptr
Definition: jmemmgr.c:141
#define SIZEOF(_ar)
Definition: calc.h:97
#define JPOOL_IMAGE
Definition: jpeglib.h:808
smooth NULL
Definition: ftsmooth.c:416
if(!(yy_init))
Definition: macro.lex.yy.c:714
#define ERREXIT1(cinfo, code, p1)
Definition: jerror.h:212
Definition: mem.c:156
GLuint64EXT * result
Definition: glext.h:11304
struct jvirt_sarray_control * jvirt_sarray_ptr
Definition: jpeglib.h:811

Referenced by jinit_memory_mgr().

◆ self_destruct()

self_destruct ( j_common_ptr  cinfo)

Definition at line 1003 of file jmemmgr.c.

1004 {
1005  int pool;
1006 
1007  /* Close all backing store, release all memory.
1008  * Releasing pools in reverse order might help avoid fragmentation
1009  * with some (brain-damaged) malloc libraries.
1010  */
1011  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {
1012  free_pool(cinfo, pool);
1013  }
1014 
1015  /* Release the memory manager control block too. */
1016  jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr));
1017  cinfo->mem = NULL; /* ensures I will be called only once */
1018 
1019  jpeg_mem_term(cinfo); /* system-dependent cleanup */
1020 }
jpeg_mem_term(j_common_ptr cinfo)
Definition: jmemansi.c:164
free_pool(j_common_ptr cinfo, int pool_id)
Definition: jmemmgr.c:931
#define SIZEOF(_ar)
Definition: calc.h:97
smooth NULL
Definition: ftsmooth.c:416
#define JPOOL_NUMPOOLS
Definition: jpeglib.h:809
jpeg_free_small(j_common_ptr cinfo, void *object, size_t sizeofobject)
Definition: jmemansi.c:42
#define JPOOL_PERMANENT
Definition: jpeglib.h:807

Referenced by jinit_memory_mgr().

Variable Documentation

◆ extra_pool_slop

const size_t extra_pool_slop[JPOOL_NUMPOOLS]
static
Initial value:
=
{
0,
5000
}

Definition at line 248 of file jmemmgr.c.

Referenced by alloc_small().

◆ first_pool_slop

const size_t first_pool_slop[JPOOL_NUMPOOLS]
static
Initial value:
=
{
1600,
16000
}

Definition at line 242 of file jmemmgr.c.

Referenced by alloc_small().