jmemmgr.cpp File Reference

#include "jinclude.h"
#include "mrpt_jpeglib.h"
#include "jmemsys.h"

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_struct *	small_pool_ptr
typedef union small_pool_struct	small_pool_hdr
typedef union large_pool_struct FAR *	large_pool_ptr
typedef union large_pool_struct	large_pool_hdr
typedef my_memory_mgr *	my_mem_ptr

Functions
	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 54 of file jmemmgr.cpp.

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

AM_MEMORY_MANAGER

#define AM_MEMORY_MANAGER   /* we define jvirt_Xarray_control structs */

Definition at line 11 of file jmemmgr.cpp.

JPEG_INTERNALS

#define JPEG_INTERNALS

Definition at line 10 of file jmemmgr.cpp.

MIN_SLOP

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

Definition at line 234 of file jmemmgr.cpp.

Referenced by alloc_small().

Typedef Documentation

large_pool_hdr

typedef union large_pool_struct large_pool_hdr

large_pool_ptr

typedef union large_pool_struct FAR* large_pool_ptr

Definition at line 81 of file jmemmgr.cpp.

my_mem_ptr

typedef my_memory_mgr* my_mem_ptr

Definition at line 122 of file jmemmgr.cpp.

small_pool_hdr

typedef union small_pool_struct small_pool_hdr

small_pool_ptr

typedef union small_pool_struct* small_pool_ptr

Definition at line 69 of file jmemmgr.cpp.

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 847 of file jmemmgr.cpp.

References do_barray_io(), ERREXIT, FALSE, FAR, jzero_far(), SIZEOF, and TRUE.

Referenced by jinit_memory_mgr().

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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 751 of file jmemmgr.cpp.

References do_sarray_io(), ERREXIT, FALSE, FAR, jzero_far(), SIZEOF, and TRUE.

Referenced by jinit_memory_mgr().

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alloc_barray()

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

Definition at line 422 of file jmemmgr.cpp.

References alloc_large(), alloc_small(), ERREXIT, my_memory_mgr::last_rowsperchunk, MAX_ALLOC_CHUNK, MIN, SIZEOF, and workspace.

Referenced by jinit_memory_mgr(), and realize_virt_arrays().

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alloc_large()

alloc_large	(	j_common_ptr	cinfo,
		int	pool_id,
		size_t	sizeofobject
	)

Definition at line 322 of file jmemmgr.cpp.

References ALIGN_TYPE, ERREXIT1, FAR, jpeg_get_large(), JPOOL_NUMPOOLS, my_memory_mgr::large_list, MAX_ALLOC_CHUNK, out_of_memory(), SIZEOF, sizeofobject, and my_memory_mgr::total_space_allocated.

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

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alloc_sarray()

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

Definition at line 372 of file jmemmgr.cpp.

References alloc_large(), alloc_small(), ERREXIT, my_memory_mgr::last_rowsperchunk, MAX_ALLOC_CHUNK, MIN, SIZEOF, and workspace.

Referenced by jinit_memory_mgr(), and realize_virt_arrays().

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alloc_small()

alloc_small	(	j_common_ptr	cinfo,
		int	pool_id,
		size_t	sizeofobject
	)

Definition at line 237 of file jmemmgr.cpp.

References ALIGN_TYPE, small_pool_struct::bytes_left, small_pool_struct::bytes_used, ERREXIT1, extra_pool_slop, first_pool_slop, small_pool_struct::hdr, jpeg_get_small(), JPOOL_NUMPOOLS, MAX_ALLOC_CHUNK, MIN_SLOP, small_pool_struct::next, out_of_memory(), SIZEOF, sizeofobject, my_memory_mgr::small_list, and my_memory_mgr::total_space_allocated.

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

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do_barray_io()

do_barray_io	(	j_common_ptr	cinfo,
		jvirt_barray_ptr	ptr,
		boolean	writing
	)

Definition at line 718 of file jmemmgr.cpp.

References FAR, MIN, and SIZEOF.

Referenced by access_virt_barray().

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do_sarray_io()

do_sarray_io	(	j_common_ptr	cinfo,
		jvirt_sarray_ptr	ptr,
		boolean	writing
	)

Definition at line 685 of file jmemmgr.cpp.

References FAR, MIN, and SIZEOF.

Referenced by access_virt_sarray().

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free_pool()

free_pool	(	j_common_ptr	cinfo,
		int	pool_id
	)

Definition at line 947 of file jmemmgr.cpp.

References jvirt_sarray_control::b_s_info, jvirt_barray_control::b_s_info, jvirt_sarray_control::b_s_open, jvirt_barray_control::b_s_open, small_pool_struct::bytes_used, ERREXIT1, FALSE, FAR, small_pool_struct::hdr, jpeg_free_large(), jpeg_free_small(), JPOOL_IMAGE, JPOOL_NUMPOOLS, my_memory_mgr::large_list, small_pool_struct::next, jvirt_sarray_control::next, jvirt_barray_control::next, SIZEOF, my_memory_mgr::small_list, my_memory_mgr::total_space_allocated, my_memory_mgr::virt_barray_list, and my_memory_mgr::virt_sarray_list.

Referenced by jinit_memory_mgr(), and self_destruct().

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jinit_memory_mgr()

jinit_memory_mgr

(

j_common_ptr

cinfo

)

Definition at line 1050 of file jmemmgr.cpp.

References access_virt_barray(), access_virt_sarray(), ALIGN_TYPE, alloc_barray(), alloc_large(), alloc_sarray(), alloc_small(), ERREXIT, ERREXIT1, free_pool(), jpeg_get_small(), jpeg_mem_init(), jpeg_mem_term(), JPOOL_NUMPOOLS, JPOOL_PERMANENT, my_memory_mgr::large_list, MAX_ALLOC_CHUNK, jpeg_memory_mgr::max_alloc_chunk, jpeg_memory_mgr::max_memory_to_use, my_memory_mgr::pub, realize_virt_arrays(), request_virt_barray(), request_virt_sarray(), self_destruct(), SIZEOF, my_memory_mgr::small_list, my_memory_mgr::total_space_allocated, my_memory_mgr::virt_barray_list, and my_memory_mgr::virt_sarray_list.

Referenced by jpeg_CreateCompress(), and jpeg_CreateDecompress().

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out_of_memory()

out_of_memory	(	j_common_ptr	cinfo,
		int	which
	)

Definition at line 201 of file jmemmgr.cpp.

References ERREXIT1.

Referenced by alloc_large(), and alloc_small().

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realize_virt_arrays()

realize_virt_arrays

(

j_common_ptr

cinfo

)

Definition at line 561 of file jmemmgr.cpp.

References alloc_barray(), alloc_sarray(), FALSE, for(), jpeg_mem_available(), jpeg_open_backing_store(), JPOOL_IMAGE, my_memory_mgr::last_rowsperchunk, jvirt_sarray_control::next, jvirt_barray_control::next, SIZEOF, my_memory_mgr::total_space_allocated, TRUE, my_memory_mgr::virt_barray_list, and my_memory_mgr::virt_sarray_list.

Referenced by jinit_memory_mgr().

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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 532 of file jmemmgr.cpp.

References alloc_small(), ERREXIT1, FALSE, JPOOL_IMAGE, SIZEOF, and my_memory_mgr::virt_barray_list.

Referenced by jinit_memory_mgr().

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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 503 of file jmemmgr.cpp.

References alloc_small(), ERREXIT1, FALSE, JPOOL_IMAGE, SIZEOF, and my_memory_mgr::virt_sarray_list.

Referenced by jinit_memory_mgr().

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self_destruct()

self_destruct

(

j_common_ptr

cinfo

)

Definition at line 1024 of file jmemmgr.cpp.

References free_pool(), jpeg_free_small(), jpeg_mem_term(), JPOOL_NUMPOOLS, JPOOL_PERMANENT, and SIZEOF.

Referenced by jinit_memory_mgr().

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Variable Documentation

extra_pool_slop

const size_t extra_pool_slop[JPOOL_NUMPOOLS]

static

Initial value:

= {
        0, 
        5000 
}

Definition at line 229 of file jmemmgr.cpp.

Referenced by alloc_small().

first_pool_slop

const size_t first_pool_slop[JPOOL_NUMPOOLS]

static

Initial value:

= {
        1600, 
        16000 
}

Definition at line 224 of file jmemmgr.cpp.

Referenced by alloc_small().