diff options
| author | click <none@none> | 2010-08-07 19:01:57 +0200 |
|---|---|---|
| committer | click <none@none> | 2010-08-07 19:01:57 +0200 |
| commit | ce435f6d4f84462c0707bbc608d767648d5e99c3 (patch) | |
| tree | dabac44fd559c925acf2171adb0ae3038f05ad7b /externals/mysql/mysys/my_lockmem.c | |
| parent | 3cc24e0971f96b9ffa4032a154750e4224ea499d (diff) | |
BuildSystem/VS: Remove now defunct an unmaintained buildfiles - use CMake for generating solutionfiles
--HG--
branch : trunk
Diffstat (limited to 'externals/mysql/mysys/my_lockmem.c')
| -rw-r--r-- | externals/mysql/mysys/my_lockmem.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/externals/mysql/mysys/my_lockmem.c b/externals/mysql/mysys/my_lockmem.c deleted file mode 100644 index 7d226b187d8..00000000000 --- a/externals/mysql/mysys/my_lockmem.c +++ /dev/null @@ -1,103 +0,0 @@ -/* Copyright (C) 2000 MySQL AB - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -/* Alloc a block of locked memory */ - -#include "mysys_priv.h" -#include "mysys_err.h" -#include <my_list.h> - -#ifdef HAVE_MLOCK -#include <sys/mman.h> - -struct st_mem_list -{ - LIST list; - uchar *page; - uint size; -}; - -LIST *mem_list; - -void *my_malloc_lock(size_t size,myf MyFlags) -{ - int success; - uint pagesize=sysconf(_SC_PAGESIZE); - uchar *ptr; - struct st_mem_list *element; - DBUG_ENTER("my_malloc_lock"); - - size=((size-1) & ~(pagesize-1))+pagesize; -#if HAVE_MEMALIGN - if (!(ptr=memalign(pagesize,size))) -#else - if (!(ptr=valloc(size))) -#endif - { - if (MyFlags & (MY_FAE+MY_WME)) - my_error(EE_OUTOFMEMORY, MYF(ME_BELL+ME_WAITTANG),size); - DBUG_RETURN(0); - } - success = mlock((uchar*) ptr,size); - if (success != 0 && geteuid() == 0) - { - DBUG_PRINT("warning",("Failed to lock memory. errno %d\n", - errno)); - fprintf(stderr, "Warning: Failed to lock memory. errno %d\n", - errno); - } - else - { - /* Add block in a list for munlock */ - if (!(element=(struct st_mem_list*) my_malloc(sizeof(*element),MyFlags))) - { - (void) munlock((uchar*) ptr,size); - free(ptr); - DBUG_RETURN(0); - } - element->list.data=(uchar*) element; - element->page=ptr; - element->size=size; - pthread_mutex_lock(&THR_LOCK_malloc); - mem_list=list_add(mem_list,&element->list); - pthread_mutex_unlock(&THR_LOCK_malloc); - } - DBUG_RETURN(ptr); -} - - -void my_free_lock(void *ptr,myf Myflags __attribute__((unused))) -{ - LIST *list; - struct st_mem_list *element=0; - - pthread_mutex_lock(&THR_LOCK_malloc); - for (list=mem_list ; list ; list=list->next) - { - element=(struct st_mem_list*) list->data; - if (ptr == element->page) - { /* Found locked mem */ - (void) munlock((uchar*) ptr,element->size); - mem_list=list_delete(mem_list,list); - break; - } - } - pthread_mutex_unlock(&THR_LOCK_malloc); - if (element) - my_free((uchar*) element,MYF(0)); - free(ptr); /* Free even if not locked */ -} - -#endif /* HAVE_MLOCK */ |
