Doxygen Source Code Documentation
thd_forcemalloc.c File Reference
#include "mrilib.h"#include "thd.h"Go to the source code of this file.
Functions | |
| void | THD_force_malloc_type (THD_datablock *blk, int mem_type) |
Variables | |
| int | native_order = -1 |
| int | no_mmap = -1 |
Function Documentation
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Definition at line 13 of file thd_forcemalloc.c. References AFNI_yesenv(), THD_diskptr::brick_name, THD_diskptr::byte_order, COMPRESS_filecode(), DATABLOCK_MEM_ANY, DATABLOCK_MEM_MALLOC, DATABLOCK_MEM_MMAP, DBLK_LOCKED, DBLK_mmapfix, THD_datablock::diskptr, ISVALID_DATABLOCK, THD_datablock::malloc_type, MMAP_THRESHOLD, mri_short_order(), native_order, no_mmap, THD_purge_datablock(), and THD_datablock::total_bytes. Referenced by B2F_read_opts(), BUCK_read_opts(), EDIT_dset_items(), EDIT_one_dataset(), main(), PLUTO_add_dset(), RT_tell_afni_one(), TCAT_read_opts(), and ZCAT_read_opts().
00014 {
00015 int new_type ;
00016
00017 no_mmap = AFNI_yesenv("AFNI_NOMMAP") ;
00018
00019 if( native_order < 0 ) native_order = mri_short_order() ;
00020
00021 /*-- sanity checks --*/
00022
00023 if( ! ISVALID_DATABLOCK(blk) ) return ;
00024
00025 if( mem_type == DATABLOCK_MEM_ANY ){ /* 14 Oct 1996 */
00026 #if MMAP_THRESHOLD > 0
00027 new_type = (blk->total_bytes > MMAP_THRESHOLD)
00028 ? DATABLOCK_MEM_MMAP : DATABLOCK_MEM_MALLOC ;
00029 #else
00030 new_type = DATABLOCK_MEM_MALLOC ;
00031 #endif
00032
00033 } else {
00034 new_type = mem_type ;
00035 }
00036
00037 if( COMPRESS_filecode(blk->diskptr->brick_name) >= 0 && new_type == DATABLOCK_MEM_MMAP )
00038 new_type = DATABLOCK_MEM_MALLOC ;
00039
00040 /* 25 April 1998: byte order issues */
00041
00042 if( blk->diskptr->byte_order <= 0 )
00043 blk->diskptr->byte_order = native_order ;
00044 else if( blk->diskptr->byte_order != native_order && new_type == DATABLOCK_MEM_MMAP )
00045 new_type = DATABLOCK_MEM_MALLOC ;
00046
00047 if( no_mmap && new_type == DATABLOCK_MEM_MMAP )
00048 new_type = DATABLOCK_MEM_MALLOC ;
00049
00050 if( DBLK_LOCKED(blk) ) /* 22 Mar 2001 */
00051 new_type = DATABLOCK_MEM_MALLOC ;
00052
00053 if( blk->malloc_type == new_type ) return ;
00054 (void) THD_purge_datablock( blk , blk->malloc_type ) ;
00055 blk->malloc_type = new_type ;
00056
00057 DBLK_mmapfix(blk) ; /* 28 Mar 2005 */
00058 return ;
00059 }
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Variable Documentation
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Definition at line 10 of file thd_forcemalloc.c. Referenced by THD_force_malloc_type(). |
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Definition at line 11 of file thd_forcemalloc.c. Referenced by THD_force_malloc_type(). |
