ReactOS  0.4.14-dev-604-gcfdd483
Pool Class Reference

#include <bufpool.h>

Collaboration diagram for Pool:

Public Member Functions

 Pool (int, int, const char *)
 
 ~Pool (void)
 
voidnew_buffer (void)
 
void free_buffer (void *)
 
void clear (void)
 

Protected Types

enum  Magic { is_allocated = 0xf3a1, is_free = 0xf1a2 }
 

Protected Attributes

Bufferfreelist
 
charblocklist [NBLOCKS]
 
int nextblock
 
charcurblock
 
int buffersize
 
int nextsize
 
int nextfree
 
int initsize
 
const charname
 
Magic magic
 

Private Member Functions

void grow (void)
 

Detailed Description

Definition at line 50 of file bufpool.h.

Member Enumeration Documentation

◆ Magic

enum Pool::Magic
protected
Enumerator
is_allocated 
is_free 

Definition at line 70 of file bufpool.h.

70 { is_allocated = 0xf3a1, is_free = 0xf1a2 };

Constructor & Destructor Documentation

◆ Pool()

Pool::Pool ( int  _buffersize,
int  initpoolsize,
const char n 
)

Definition at line 49 of file bufpool.cc.

50 {
51  if((unsigned)_buffersize < sizeof(Buffer))
52  buffersize = sizeof(Buffer);
53  else
54  buffersize = _buffersize;
55  initsize = initpoolsize * buffersize;
57  name = n;
59  nextblock = 0;
60  curblock = 0;
61  freelist = 0;
62  nextfree = 0;
63  for (int i = 0; i < NBLOCKS; i++) {
64  blocklist[i] = 0;
65  }
66 }
int initsize
Definition: bufpool.h:69
int buffersize
Definition: bufpool.h:66
GLdouble n
Definition: glext.h:7729
#define NBLOCKS
Definition: bufpool.h:43
char * blocklist[NBLOCKS]
Definition: bufpool.h:63
char * curblock
Definition: bufpool.h:65
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
Buffer * freelist
Definition: bufpool.h:62
Definition: bufpool.h:45
Magic magic
Definition: bufpool.h:72
int nextsize
Definition: bufpool.h:67
Definition: name.c:38
int nextblock
Definition: bufpool.h:64
IN BOOLEAN OUT PSTR Buffer
Definition: progress.h:34
int nextfree
Definition: bufpool.h:68

◆ ~Pool()

Pool::~Pool ( void  )

Definition at line 73 of file bufpool.cc.

74 {
75  assert( (this != 0) && (magic == is_allocated) );
76 
77  while( nextblock ) {
78  delete [] blocklist[--nextblock];
79  blocklist[nextblock] = 0;
80  }
81  magic = is_free;
82 }
#define assert(x)
Definition: debug.h:53
char * blocklist[NBLOCKS]
Definition: bufpool.h:63
Magic magic
Definition: bufpool.h:72
int nextblock
Definition: bufpool.h:64

Member Function Documentation

◆ clear()

void Pool::clear ( void  )

Definition at line 100 of file bufpool.cc.

101 {
102  assert( (this != 0) && (magic == is_allocated) );
103 
104  while( nextblock ) {
105  delete [] blocklist[--nextblock];
106  blocklist[nextblock] = 0;
107  }
108  curblock = 0;
109  freelist = 0;
110  nextfree = 0;
111  if( nextsize > initsize )
112  nextsize /= 2;
113 }
int initsize
Definition: bufpool.h:69
#define assert(x)
Definition: debug.h:53
char * blocklist[NBLOCKS]
Definition: bufpool.h:63
char * curblock
Definition: bufpool.h:65
Buffer * freelist
Definition: bufpool.h:62
Magic magic
Definition: bufpool.h:72
int nextsize
Definition: bufpool.h:67
int nextblock
Definition: bufpool.h:64
int nextfree
Definition: bufpool.h:68

Referenced by Subdivider::clear(), and Maplist::freeMaps().

◆ free_buffer()

void Pool::free_buffer ( void b)
inline

Definition at line 81 of file bufpool.h.

82 {
83  assert( (this != 0) && (magic == is_allocated) );
84 
85  /* add buffer to singly connected free list */
86 
87  ((Buffer *) b)->next = freelist;
88  freelist = (Buffer *) b;
89 }
#define assert(x)
Definition: debug.h:53
Buffer * freelist
Definition: bufpool.h:62
Definition: bufpool.h:45
GLboolean GLboolean GLboolean b
Definition: glext.h:6204
Magic magic
Definition: bufpool.h:72

◆ grow()

void Pool::grow ( void  )
private

Definition at line 85 of file bufpool.cc.

86 {
87  assert( (this != 0) && (magic == is_allocated) );
88  curblock = new char[nextsize];
91  nextsize *= 2;
92 }
#define assert(x)
Definition: debug.h:53
char * blocklist[NBLOCKS]
Definition: bufpool.h:63
char * curblock
Definition: bufpool.h:65
Magic magic
Definition: bufpool.h:72
int nextsize
Definition: bufpool.h:67
int nextblock
Definition: bufpool.h:64
int nextfree
Definition: bufpool.h:68

Referenced by new_buffer().

◆ new_buffer()

void * Pool::new_buffer ( void  )
inline

Definition at line 98 of file bufpool.h.

99 {
100  void *buffer;
101 
102  assert( (this != 0) && (magic == is_allocated) );
103 
104  /* find free buffer */
105 
106  if( freelist ) {
107  buffer = (void *) freelist;
109  } else {
110  if( ! nextfree )
111  grow( );
112  nextfree -= buffersize;;
113  buffer = (void *) (curblock + nextfree);
114  }
115  return buffer;
116 }
void grow(void)
Definition: bufpool.cc:85
Buffer * next
Definition: bufpool.h:47
int buffersize
Definition: bufpool.h:66
#define assert(x)
Definition: debug.h:53
GLuint buffer
Definition: glext.h:5915
char * curblock
Definition: bufpool.h:65
Buffer * freelist
Definition: bufpool.h:62
Magic magic
Definition: bufpool.h:72
int nextfree
Definition: bufpool.h:68

Member Data Documentation

◆ blocklist

char* Pool::blocklist[NBLOCKS]
protected

Definition at line 63 of file bufpool.h.

Referenced by clear(), grow(), Pool(), and ~Pool().

◆ buffersize

int Pool::buffersize
protected

Definition at line 66 of file bufpool.h.

Referenced by new_buffer(), and Pool().

◆ curblock

char* Pool::curblock
protected

Definition at line 65 of file bufpool.h.

Referenced by clear(), grow(), new_buffer(), and Pool().

◆ freelist

Buffer* Pool::freelist
protected

Definition at line 62 of file bufpool.h.

Referenced by clear(), free_buffer(), new_buffer(), and Pool().

◆ initsize

int Pool::initsize
protected

Definition at line 69 of file bufpool.h.

Referenced by clear(), and Pool().

◆ magic

Magic Pool::magic
protected

Definition at line 72 of file bufpool.h.

Referenced by clear(), free_buffer(), grow(), new_buffer(), Pool(), and ~Pool().

◆ name

const char* Pool::name
protected

Definition at line 71 of file bufpool.h.

◆ nextblock

int Pool::nextblock
protected

Definition at line 64 of file bufpool.h.

Referenced by clear(), grow(), Pool(), and ~Pool().

◆ nextfree

int Pool::nextfree
protected

Definition at line 68 of file bufpool.h.

Referenced by clear(), grow(), new_buffer(), and Pool().

◆ nextsize

int Pool::nextsize
protected

Definition at line 67 of file bufpool.h.

Referenced by clear(), grow(), and Pool().


The documentation for this class was generated from the following files: