NeoMutt  2019-11-11
Teaching an old dog new tricks
DOXYGEN
pool.c
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1 
29 #include "config.h"
30 #include <stdio.h>
31 #include "buffer.h"
32 #include "logging.h"
33 #include "memory.h"
34 
35 static size_t BufferPoolCount = 0;
36 static size_t BufferPoolLen = 0;
37 static size_t BufferPoolIncrement = 20;
38 static size_t BufferPoolInitialBufferSize = 1024;
39 static struct Buffer **BufferPool = NULL;
40 
46 static struct Buffer *buffer_new(void)
47 {
48  struct Buffer *buf = mutt_mem_malloc(sizeof(struct Buffer));
49  mutt_buffer_init(buf);
50  return buf;
51 }
52 
57 static void buffer_free(struct Buffer **p)
58 {
59  if (!p || !*p)
60  return;
61 
63  FREE(p);
64 }
65 
69 static void increase_buffer_pool(void)
70 {
73 
74  mutt_mem_realloc(&BufferPool, BufferPoolLen * sizeof(struct Buffer *));
76  {
77  struct Buffer *newbuf = buffer_new();
79  BufferPool[BufferPoolCount++] = newbuf;
80  }
81 }
82 
87 {
88  mutt_debug(LL_DEBUG1, "%zu of %zu returned to pool\n", BufferPoolCount, BufferPoolLen);
89 
90  while (BufferPoolCount)
91  buffer_free(&BufferPool[--BufferPoolCount]);
92  FREE(&BufferPool);
93  BufferPoolLen = 0;
94 }
95 
101 {
102  if (BufferPoolCount == 0)
104  return BufferPool[--BufferPoolCount];
105 }
106 
112 {
113  if (!pbuf || !*pbuf)
114  return;
115 
117  {
118  mutt_debug(LL_DEBUG1, "Internal buffer pool error\n");
119  buffer_free(pbuf);
120  return;
121  }
122 
123  struct Buffer *buf = *pbuf;
124  if (buf->dsize > 2 * BufferPoolInitialBufferSize)
125  {
127  mutt_mem_realloc(&buf->data, buf->dsize);
128  }
129  mutt_buffer_reset(buf);
130  BufferPool[BufferPoolCount++] = buf;
131 
132  *pbuf = NULL;
133 }
static size_t BufferPoolIncrement
Definition: pool.c:37
void mutt_buffer_reset(struct Buffer *buf)
Reset an existing Buffer.
Definition: buffer.c:79
struct Buffer * mutt_buffer_pool_get(void)
Get a Buffer from the pool.
Definition: pool.c:100
Memory management wrappers.
static void increase_buffer_pool(void)
Increase the size of the Buffer pool.
Definition: pool.c:69
void mutt_buffer_pool_release(struct Buffer **pbuf)
Free a Buffer from the pool.
Definition: pool.c:111
String manipulation buffer.
Definition: buffer.h:33
Logging Dispatcher.
size_t dsize
Length of data.
Definition: buffer.h:37
void mutt_buffer_dealloc(struct Buffer *buf)
Release the memory allocated by a buffer.
Definition: buffer.c:294
void mutt_mem_realloc(void *ptr, size_t size)
Resize a block of memory on the heap.
Definition: memory.c:114
void * mutt_mem_malloc(size_t size)
Allocate memory on the heap.
Definition: memory.c:90
char * data
Pointer to data.
Definition: buffer.h:35
static struct Buffer * buffer_new(void)
Allocate a new Buffer on the heap.
Definition: pool.c:46
static size_t BufferPoolLen
Definition: pool.c:36
General purpose object for storing and parsing strings.
Log at debug level 1.
Definition: logging.h:56
static size_t BufferPoolInitialBufferSize
Definition: pool.c:38
#define FREE(x)
Definition: memory.h:40
#define mutt_debug(LEVEL,...)
Definition: logging.h:81
struct Buffer * mutt_buffer_init(struct Buffer *buf)
Initialise a new Buffer.
Definition: buffer.c:46
void mutt_buffer_pool_free(void)
Release the Buffer pool.
Definition: pool.c:86
static unsigned char * pbuf
Cache PGP data packet.
Definition: pgppacket.c:37
static size_t BufferPoolCount
Definition: pool.c:35
static void buffer_free(struct Buffer **p)
Release a Buffer and its contents.
Definition: pool.c:57
void mutt_buffer_alloc(struct Buffer *buf, size_t new_size)
Make sure a buffer can store at least new_size bytes.
Definition: buffer.c:265