diff options
Diffstat (limited to 'src/H5Fsuper.c')
| -rw-r--r-- | src/H5Fsuper.c | 67 |
1 files changed, 37 insertions, 30 deletions
diff --git a/src/H5Fsuper.c b/src/H5Fsuper.c index 4a68f6b..5334c51 100644 --- a/src/H5Fsuper.c +++ b/src/H5Fsuper.c @@ -768,13 +768,13 @@ H5F__super_read(H5F_t *f, H5P_genplist_t *fa_plist, hbool_t initial_read) /* If message is NOT marked "unknown"--set up file space info */ if(!(flags & H5O_MSG_FLAG_WAS_UNKNOWN)) { H5O_fsinfo_t fsinfo; /* File space info message from superblock extension */ - hbool_t null_fsm_addr = FALSE; /* Whether to drop free-space to the floor */ + /* f->shared->null_fsm_addr: Whether to drop free-space to the floor */ /* The h5clear tool uses this property to tell the library * to drop free-space to the floor */ if(H5P_exist_plist(fa_plist, H5F_ACS_NULL_FSM_ADDR_NAME) > 0) - if(H5P_get(fa_plist, H5F_ACS_NULL_FSM_ADDR_NAME, &null_fsm_addr) < 0) + if(H5P_get(fa_plist, H5F_ACS_NULL_FSM_ADDR_NAME, &f->shared->null_fsm_addr) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get clearance for persisting fsm addr") /* Retrieve the 'file space info' structure */ @@ -823,35 +823,42 @@ H5F__super_read(H5F_t *f, H5P_genplist_t *fa_plist, hbool_t initial_read) /* Initialize page end meta threshold */ f->shared->pgend_meta_thres = fsinfo.pgend_meta_thres; - if(f->shared->eoa_pre_fsm_fsalloc != fsinfo.eoa_pre_fsm_fsalloc) - f->shared->eoa_pre_fsm_fsalloc = fsinfo.eoa_pre_fsm_fsalloc; + if(f->shared->eoa_fsm_fsalloc != fsinfo.eoa_pre_fsm_fsalloc) + f->shared->eoa_fsm_fsalloc = fsinfo.eoa_pre_fsm_fsalloc; - /* f->shared->eoa_pre_fsm_fsalloc must always be HADDR_UNDEF - * in the absence of persistent free space managers. - */ - /* If the following two conditions are true: + /* + * If the following two conditions are true: * (1) skipping EOF check (skip_eof_check) - * (2) dropping free-space to the floor (null_fsm_addr) - * skip the asserts as "eoa_pre_fsm_fsalloc" may be undefined + * (2) dropping free-space to the floor (f->shared->null_fsm_addr) + * skip the asserts as "eoa_fsm_fsalloc" may be undefined * for a crashed file with persistent free space managers. - * #1 and #2 are enabled when the tool h5clear --increment + * The above two conditions are enabled when the tool h5clear --increment * option is used. */ - if(!skip_eof_check && !null_fsm_addr) { - HDassert((!f->shared->fs_persist) || (f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF)); - HDassert(!f->shared->first_alloc_dealloc); - } - - /* As "eoa_pre_fsm_fsalloc" may be undefined for a crashed file - * with persistent free space managers, therefore, set - * "first_alloc_dealloc" when the condition - * "dropping free-space to the floor is true. - * This will ensure that no action is done to settle things on file - * close via H5MF_settle_meta_data_fsm() and H5MF_settle_raw_data_fsm(). + if(!skip_eof_check && !f->shared->null_fsm_addr) + HDassert((!f->shared->fs_persist) || (f->shared->eoa_fsm_fsalloc != HADDR_UNDEF)); + + /* + * A crashed file with persistent free-space managers may have + * undefined f->shared->eoa_fsm_fsalloc. + * eoa_fsm_fsalloc is the final eoa which is saved in the free-space + * info message's eoa_pre_fsm_fsalloc field for backward compatibility. + * If the tool h5clear sets to dropping free-space to the floor + * as indicated by f->shared->null_fsm_addr, we are not going to + * perform actions to settle things on file close in the routines + * H5MF_settle_meta_data_fsm() and H5MF_settle_raw_data_fsm(). + * + * We remove the following check: + * if((f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF || null_fsm_addr) && + * (H5F_INTENT(f) & H5F_ACC_RDWR)) + * f->shared->first_alloc_dealloc = TRUE; + * + * Because: + * --there is no more f->shared->eoa_pre_fsm_fsalloc and + * f->shared->first_alloc_dealloc + * --the check for null_fsm_addr is directly done in H5MF_settle_meta_data_fsm() + * and H5MF_settle_raw_data_fsm() */ - if((f->shared->eoa_pre_fsm_fsalloc != HADDR_UNDEF || null_fsm_addr) && - (H5F_INTENT(f) & H5F_ACC_RDWR)) - f->shared->first_alloc_dealloc = TRUE; f->shared->fs_addr[0] = HADDR_UNDEF; for(u = 1; u < NELMTS(f->shared->fs_addr); u++) @@ -859,17 +866,17 @@ H5F__super_read(H5F_t *f, H5P_genplist_t *fa_plist, hbool_t initial_read) /* If the following two conditions are true: * (1) file is persisting free-space - * (2) dropping free-space to the floor (null_fsm_addr) + * (2) dropping free-space to the floor (f->shared->null_fsm_addr) * nullify the addresses of the FSMs */ - if(f->shared->fs_persist && null_fsm_addr) + if(f->shared->fs_persist && f->shared->null_fsm_addr) for(u = 0; u < NELMTS(fsinfo.fs_addr); u++) f->shared->fs_addr[u] = fsinfo.fs_addr[u] = HADDR_UNDEF; /* For fsinfo.mapped: remove the FSINFO message from the superblock extension and write a new message to the extension */ - /* For null_fsm_addr: just update FSINFO message in the superblock extension */ - if(((fsinfo.mapped || null_fsm_addr) && (rw_flags & H5AC__READ_ONLY_FLAG) == 0)) { + /* For f->shared->null_fsm_addr: just update FSINFO message in the superblock extension */ + if(((fsinfo.mapped || f->shared->null_fsm_addr) && (rw_flags & H5AC__READ_ONLY_FLAG) == 0)) { /* Do the same kluge until we know for sure. VC */ #if 1 /* bug fix test code -- tidy this up if all goes well */ /* JRM */ @@ -883,7 +890,7 @@ H5F__super_read(H5F_t *f, H5P_genplist_t *fa_plist, hbool_t initial_read) f->shared->sblock = sblock; #endif /* JRM */ - if(null_fsm_addr) { + if(f->shared->null_fsm_addr) { if(H5F__super_ext_write_msg(f, H5O_FSINFO_ID, &fsinfo, FALSE, H5O_MSG_FLAG_MARK_IF_UNKNOWN) < 0) HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "error in writing fsinfo message to superblock extension") } |