diff options
Diffstat (limited to 'ext/mysql/libmysql/my_alloc.c')
-rw-r--r-- | ext/mysql/libmysql/my_alloc.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/ext/mysql/libmysql/my_alloc.c b/ext/mysql/libmysql/my_alloc.c deleted file mode 100644 index 4dec9115d9..0000000000 --- a/ext/mysql/libmysql/my_alloc.c +++ /dev/null @@ -1,115 +0,0 @@ -/* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB - This file is public domain and comes with NO WARRANTY of any kind */ - -/* Routines to handle mallocing of results which will be freed the same time */ - -#include <global.h> -#include <my_sys.h> -#include <m_string.h> - -void init_alloc_root(MEM_ROOT *mem_root,uint block_size) -{ - mem_root->free=mem_root->used=0; - mem_root->min_malloc=16; - mem_root->block_size=block_size-MALLOC_OVERHEAD-sizeof(USED_MEM)-8; - mem_root->error_handler=0; -} - -gptr alloc_root(MEM_ROOT *mem_root,unsigned int Size) -{ -#if defined(HAVE_purify) && defined(EXTRA_DEBUG) - reg1 USED_MEM *next; - Size+=ALIGN_SIZE(sizeof(USED_MEM)); - - if (!(next = (USED_MEM*) my_malloc(Size,MYF(MY_WME)))) - { - if (mem_root->error_handler) - (*mem_root->error_handler)(); - return((gptr) 0); /* purecov: inspected */ - } - next->next=mem_root->used; - mem_root->used=next; - return (gptr) (((char*) next)+ALIGN_SIZE(sizeof(USED_MEM))); -#else - uint get_size,max_left; - gptr point; - reg1 USED_MEM *next; - reg2 USED_MEM **prev; - - Size= ALIGN_SIZE(Size); - prev= &mem_root->free; - max_left=0; - for (next= *prev ; next && next->left < Size ; next= next->next) - { - if (next->left > max_left) - max_left=next->left; - prev= &next->next; - } - if (! next) - { /* Time to alloc new block */ - get_size= Size+ALIGN_SIZE(sizeof(USED_MEM)); - if (max_left*4 < mem_root->block_size && get_size < mem_root->block_size) - get_size=mem_root->block_size; /* Normal alloc */ - - if (!(next = (USED_MEM*) my_malloc(get_size,MYF(MY_WME)))) - { - if (mem_root->error_handler) - (*mem_root->error_handler)(); - return((gptr) 0); /* purecov: inspected */ - } - next->next= *prev; - next->size= get_size; - next->left= get_size-ALIGN_SIZE(sizeof(USED_MEM)); - *prev=next; - } - point= (gptr) ((char*) next+ (next->size-next->left)); - if ((next->left-= Size) < mem_root->min_malloc) - { /* Full block */ - *prev=next->next; /* Remove block from list */ - next->next=mem_root->used; - mem_root->used=next; - } - return(point); -#endif -} - - /* deallocate everything used by alloc_root */ - -void free_root(MEM_ROOT *root) -{ - reg1 USED_MEM *next,*old; - DBUG_ENTER("free_root"); - - if (!root) - DBUG_VOID_RETURN; /* purecov: inspected */ - for (next= root->used ; next ; ) - { - old=next; next= next->next ; - my_free((gptr) old,MYF(0)); - } - for (next= root->free ; next ; ) - { - old=next; next= next->next ; - my_free((gptr) old,MYF(0)); - } - root->used=root->free=0; - DBUG_VOID_RETURN; -} - -char *strdup_root(MEM_ROOT *root,const char *str) -{ - uint len=strlen(str)+1; - char *pos; - if ((pos=alloc_root(root,len))) - memcpy(pos,str,len); - return pos; -} - - -char *memdup_root(MEM_ROOT *root,const char *str,uint len) -{ - char *pos; - if ((pos=alloc_root(root,len))) - memcpy(pos,str,len); - return pos; -} |