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MySQL 5.1: mysql/src/5.1-dbg/sql/sp_cache.cc File Reference

mysql/src/5.1-dbg/sql/sp_cache.cc File Reference

#include "mysql_priv.h"
#include "sp_cache.h"
#include "sp_head.h"

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Classes

class  sp_cache

Functions

void sp_cache_init ()
void sp_cache_clear (sp_cache **cp)
void sp_cache_insert (sp_cache **cp, sp_head *sp)
sp_head * sp_cache_lookup (sp_cache **cp, sp_name *name)
void sp_cache_invalidate ()
void sp_cache_flush_obsolete (sp_cache **cp)
static byte * hash_get_key_for_sp_head (const byte *ptr, uint *plen, my_bool first)
static void hash_free_sp_head (void *p)

Variables

static pthread_mutex_t Cversion_lock
static ulong volatile Cversion = 0

Function Documentation

static void hash_free_sp_head ( void *  p  )  [static]

Definition at line 228 of file sp_cache.cc.

Referenced by sp_cache::init().

00229 {
00230   sp_head *sp= (sp_head *)p;
00231   delete sp;
00232 }

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static byte* hash_get_key_for_sp_head ( const byte *  ptr,
uint *  plen,
my_bool  first 
) [static]

Definition at line 218 of file sp_cache.cc.

References LEX_STRING::length, sp_head::m_qname, and LEX_STRING::str.

Referenced by sp_cache::init().

00220 {
00221   sp_head *sp= (sp_head *)ptr;
00222   *plen= sp->m_qname.length;
00223   return (byte*) sp->m_qname.str;
00224 }

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void sp_cache_clear ( sp_cache **  cp  ) 

Definition at line 98 of file sp_cache.cc.

References NULL.

00099 {
00100   sp_cache *c= *cp;
00101 
00102   if (c)
00103   {
00104     delete c;
00105     *cp= NULL;
00106   }
00107 }

void sp_cache_flush_obsolete ( sp_cache **  cp  ) 

Definition at line 196 of file sp_cache.cc.

References Cversion, DBUG_PRINT, sp_cache::remove_all(), and sp_cache::version.

Referenced by mysql_parse(), mysql_stmt_execute(), and mysql_stmt_prepare().

00197 {
00198   sp_cache *c= *cp;
00199   if (c)
00200   {
00201     ulong v;
00202     v= Cversion;                 // No need to lock when reading long variable
00203     if (c->version < v)
00204     {
00205       DBUG_PRINT("info",("sp_cache: deleting all functions"));
00206       /* We need to delete all elements. */
00207       c->remove_all();
00208       c->version= v;
00209     }
00210   }
00211 }

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void sp_cache_init (  ) 

Definition at line 81 of file sp_cache.cc.

References Cversion_lock, MY_MUTEX_INIT_FAST, and pthread_mutex_init.

Referenced by init_thread_environment().

00082 {
00083   pthread_mutex_init(&Cversion_lock, MY_MUTEX_INIT_FAST);
00084 }

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void sp_cache_insert ( sp_cache **  cp,
sp_head *  sp 
)

Definition at line 124 of file sp_cache.cc.

References Cversion, DBUG_PRINT, sp_cache::insert(), LEX_STRING::length, sp_head::m_qname, LEX_STRING::str, and sp_cache::version.

Referenced by sp_cache_routines_and_add_tables_aux(), and sp_find_routine().

00125 {
00126   sp_cache *c;
00127 
00128   if (!(c= *cp))
00129   {
00130     if (!(c= new sp_cache()))
00131       return;                                   // End of memory error
00132     c->version= Cversion;      // No need to lock when reading long variable
00133   }
00134   DBUG_PRINT("info",("sp_cache: inserting: %.*s", sp->m_qname.length,
00135                      sp->m_qname.str));
00136   c->insert(sp);
00137   *cp= c;                                       // Update *cp if it was NULL
00138 }

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void sp_cache_invalidate (  ) 

Definition at line 177 of file sp_cache.cc.

References Cversion, Cversion_lock, DBUG_PRINT, and thread_safe_increment.

Referenced by mysql_create_view(), mysql_drop_view(), mysql_rename_view(), sp_drop_db_routines(), sp_drop_function(), sp_drop_procedure(), sp_update_function(), and sp_update_procedure().

00178 {
00179   DBUG_PRINT("info",("sp_cache: invalidating"));
00180   thread_safe_increment(Cversion, &Cversion_lock);
00181 }

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sp_head* sp_cache_lookup ( sp_cache **  cp,
sp_name *  name 
)

Definition at line 157 of file sp_cache.cc.

References sp_cache::lookup(), name, and NULL.

Referenced by sp_cache_routines_and_add_tables_aux(), and sp_find_routine().

00158 {
00159   sp_cache *c= *cp;
00160   if (! c)
00161     return NULL;
00162   return c->lookup(name->m_qname.str, name->m_qname.length);
00163 }

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Variable Documentation

ulong volatile Cversion = 0 [static]

Definition at line 25 of file sp_cache.cc.

Referenced by sp_cache_flush_obsolete(), sp_cache_insert(), and sp_cache_invalidate().

pthread_mutex_t Cversion_lock [static]

Definition at line 24 of file sp_cache.cc.

Referenced by sp_cache_init(), and sp_cache_invalidate().

Generated on Sat Sep 9 02:48:38 2006 for MySQL 5.1 by  doxygen 1.4.7