pb_buffer_malloc.c File Reference

Implementation of malloc-based buffers to store data that can't be processed by the hardware. More...

Include dependency graph for pb_buffer_malloc.c:

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Data Structures
struct	malloc_buffer
Functions
static struct malloc_buffer *	malloc_buffer (struct pb_buffer *buf)
static void	malloc_buffer_destroy (struct pb_buffer *buf)
static void *	malloc_buffer_map (struct pb_buffer *buf, unsigned flags)
static void	malloc_buffer_unmap (struct pb_buffer *buf)
static void	malloc_buffer_get_base_buffer (struct pb_buffer *buf, struct pb_buffer **base_buf, unsigned *offset)
struct pb_buffer *	pb_malloc_buffer_create (size_t size, const struct pb_desc *desc)
	Malloc-based buffer to store data that can't be used by the graphics hardware.
static struct pb_buffer *	pb_malloc_bufmgr_create_buffer (struct pb_manager *mgr, size_t size, const struct pb_desc *desc)
static void	pb_malloc_bufmgr_flush (struct pb_manager *mgr)
static void	pb_malloc_bufmgr_destroy (struct pb_manager *mgr)
struct pb_manager *	pb_malloc_bufmgr_create (void)
	Malloc buffer provider.
Variables
struct pb_vtbl	malloc_buffer_vtbl
static struct pb_manager	pb_malloc_bufmgr

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Detailed Description

Implementation of malloc-based buffers to store data that can't be processed by the hardware.

Author:

Jose Fonseca <jrfonseca@tungstengraphics.com>

Definition in file pb_buffer_malloc.c.

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Function Documentation

static struct malloc_buffer* malloc_buffer

(

struct pb_buffer *

buf

)

[static, read]

Definition at line 53 of file pb_buffer_malloc.c.

References assert, malloc_buffer_vtbl, and pb_buffer::vtbl.

{
   assert(buf);
   assert(buf->vtbl == &malloc_buffer_vtbl);
   return (struct malloc_buffer *)buf;
}

static void malloc_buffer_destroy

(

struct pb_buffer *

buf

)

[static]

Definition at line 62 of file pb_buffer_malloc.c.

References align_free(), malloc_buffer::data, FREE, and malloc_buffer().

{
   align_free(malloc_buffer(buf)->data);
   FREE(buf);
}

static void malloc_buffer_get_base_buffer	(	struct pb_buffer *	buf,
		struct pb_buffer **	base_buf,
		unsigned *	offset
	)			[static]

Definition at line 85 of file pb_buffer_malloc.c.

{
   *base_buf = buf;
   *offset = 0;
}

static void* malloc_buffer_map	(	struct pb_buffer *	buf,
		unsigned	flags
	)			[static]

Definition at line 70 of file pb_buffer_malloc.c.

References malloc_buffer::data, and malloc_buffer().

{
   return malloc_buffer(buf)->data;
}

static void malloc_buffer_unmap

(

struct pb_buffer *

buf

)

[static]

Definition at line 78 of file pb_buffer_malloc.c.

{
   /* No-op */
}

struct pb_buffer* pb_malloc_buffer_create	(	size_t	size,
		const struct pb_desc *	desc
	)			[read]

Malloc-based buffer to store data that can't be used by the graphics hardware.

Definition at line 104 of file pb_buffer_malloc.c.

References align_malloc(), pb_desc::alignment, pipe_buffer::alignment, pb_buffer::base, malloc_buffer::base, CALLOC_STRUCT, malloc_buffer::data, FREE, pipe_buffer::refcount, pipe_buffer::size, pb_desc::usage, pipe_buffer::usage, and pb_buffer::vtbl.

{
   struct malloc_buffer *buf;
   
   /* TODO: do a single allocation */
   
   buf = CALLOC_STRUCT(malloc_buffer);
   if(!buf)
      return NULL;

   buf->base.base.refcount = 1;
   buf->base.base.alignment = desc->alignment;
   buf->base.base.usage = desc->usage;
   buf->base.base.size = size;
   buf->base.vtbl = &malloc_buffer_vtbl;

   buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment);
   if(!buf->data) {
      FREE(buf);
      return NULL;
   }

   return &buf->base;
}

struct pb_manager* pb_malloc_bufmgr_create

(

void

)

[read]

Malloc buffer provider.

Simple wrapper around pb_malloc_buffer_create for convenience.

Definition at line 163 of file pb_buffer_malloc.c.

{
  return &pb_malloc_bufmgr;
}

static struct pb_buffer* pb_malloc_bufmgr_create_buffer	(	struct pb_manager *	mgr,
		size_t	size,
		const struct pb_desc *	desc
	)			[static, read]

Definition at line 132 of file pb_buffer_malloc.c.

References pb_malloc_buffer_create().

{
   return pb_malloc_buffer_create(size, desc);
}

static void pb_malloc_bufmgr_destroy

(

struct pb_manager *

mgr

)

[static]

Definition at line 148 of file pb_buffer_malloc.c.

{
   /* No-op */
}

static void pb_malloc_bufmgr_flush

(

struct pb_manager *

mgr

)

[static]

Definition at line 141 of file pb_buffer_malloc.c.

{
   /* No-op */
}

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Variable Documentation

struct pb_vtbl malloc_buffer_vtbl [read]

Initial value:

 {
      malloc_buffer_destroy,
      malloc_buffer_map,
      malloc_buffer_unmap,
      malloc_buffer_get_base_buffer
}

Definition at line 95 of file pb_buffer_malloc.c.

struct pb_manager pb_malloc_bufmgr [static]

Initial value:

 {
   pb_malloc_bufmgr_destroy,
   pb_malloc_bufmgr_create_buffer,
   pb_malloc_bufmgr_flush
}

Definition at line 155 of file pb_buffer_malloc.c.

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