hcq/MaxScale
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Remove unused code

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The BUFFER_TRACE code was not in use and did not work as the HASHTABLE was
removed.
This commit is contained in:
Markus Mäkelä 2018-10-01 16:48:43 +03:00
parent d14b9bfe43
commit 304286e5fa
No known key found for this signature in database
GPG Key ID: 72D48FCE664F7B19
1 changed files with 3 additions and 120 deletions
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123
server/core/buffer.cc
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@ -24,24 +24,10 @@
#include <maxscale/log.h>
#include <maxscale/utils.h>
#if defined (BUFFER_TRACE)
#include <maxscale/hashtable.h>
#include <execinfo.h>
static HASHTABLE* buffer_hashtable = NULL;
#endif
static void gwbuf_free_one(GWBUF* buf);
static buffer_object_t* gwbuf_remove_buffer_object(GWBUF* buf,
buffer_object_t* bufobj);
#if defined (BUFFER_TRACE)
static void gwbuf_add_to_hashtable(GWBUF* buf);
static int bhashfn(void* key);
static int bcmpfn(void* key1, void* key2);
static void gwbuf_remove_from_hashtable(GWBUF* buf);
#endif
/**
* Allocate a new gateway buffer structure of size bytes.
*
@ -91,12 +77,6 @@ retblock:
{
MXS_ERROR("Memory allocation failed due to %s.", mxs_strerror(errno));
}
#if defined (BUFFER_TRACE)
else
{
gwbuf_add_to_hashtable(rval);
}
#endif
return rval;
}
@ -118,97 +98,6 @@ GWBUF* gwbuf_alloc_and_load(unsigned int size, const void* data)
return rval;
}
#if defined (BUFFER_TRACE)
/**
* Store a trace of buffer creation
*
* @param buf The buffer to record
*/
static void gwbuf_add_to_hashtable(GWBUF* buf)
{
void* array[16];
size_t size, i, total;
char** strings;
char* tracetext;
size = backtrace(array, 16);
strings = backtrace_symbols(array, size);
total = (2 * size) + 1;
for (i = 0; i < size; i++)
{
total += strlen(strings[i]);
}
tracetext = (char*)MXS_MALLOC(total);
if (tracetext)
{
char* ptr = tracetext;
for (i = 0; i < size; i++)
{
sprintf(ptr, "\t%s\n", strings[i]);
ptr += (strlen(strings[i]) + 2);
}
free (strings);
if (NULL == buffer_hashtable)
{
buffer_hashtable = hashtable_alloc(10000, bhashfn, bcmpfn);
hashtable_memory_fns(buffer_hashtable, NULL, NULL, NULL, hashtable_item_free);
}
hashtable_add(buffer_hashtable, buf, (void*)tracetext);
}
}
/**
* Hash a buffer (address) to an integer
*
* @param key The pointer to the buffer
*/
static int bhashfn(void* key)
{
return (int)((uintptr_t) key % INT_MAX);
}
/**
* Compare two buffer keys (pointers)
*
* @param key1 The pointer to the first buffer
* @param key2 The pointer to the second buffer
*/
static int bcmpfn(void* key1, void* key2)
{
return key1 == key2 ? 0 : 1;
}
/**
* Remove a buffer from the store of buffer traces
*
* @param buf The buffer to be removed
*/
static void gwbuf_remove_from_hashtable(GWBUF* buf)
{
hashtable_delete(buffer_hashtable, buf);
}
/**
* Print all buffer traces via a given print DCB
*
* @param pdcb Print DCB for output
*/
void dprintAllBuffers(void* pdcb)
{
void* buf;
char* backtrace;
HASHITERATOR* buffers = hashtable_iterator(buffer_hashtable);
while (NULL != (buf = hashtable_next(buffers)))
{
dcb_printf((DCB*)pdcb, "Buffer: %p\n", (void*)buf);
backtrace = hashtable_fetch(buffer_hashtable, buf);
dcb_printf((DCB*)pdcb, "%s", backtrace);
}
hashtable_iterator_free(buffers);
}
#endif
/**
* Free a list of gateway buffers
*
@ -265,9 +154,7 @@ static void gwbuf_free_one(GWBUF* buf)
buf->hint = buf->hint->next;
hint_free(h);
}
#if defined (BUFFER_TRACE)
gwbuf_remove_from_hashtable(buf);
#endif
MXS_FREE(buf);
}
@ -298,9 +185,7 @@ static GWBUF* gwbuf_clone_one(GWBUF* buf)
rval->gwbuf_type = buf->gwbuf_type;
rval->tail = rval;
rval->next = NULL;
#if defined (BUFFER_TRACE)
gwbuf_add_to_hashtable(rval);
#endif
return rval;
}
@ -381,9 +266,7 @@ static GWBUF* gwbuf_clone_portion(GWBUF* buf,
clonebuf->hint = NULL;
clonebuf->next = NULL;
clonebuf->tail = clonebuf;
#if defined (BUFFER_TRACE)
gwbuf_add_to_hashtable(clonebuf);
#endif
return clonebuf;
}