diff options
author | Dana Robinson <43805+derobins@users.noreply.github.com> | 2020-11-17 13:47:52 (GMT) |
---|---|---|
committer | GitHub <noreply@github.com> | 2020-11-17 13:47:52 (GMT) |
commit | 5d0be1b196570ac2c08ffe0b61ac6a45b6ab7f3f (patch) | |
tree | dbe8a76bcb211babe9900647eb1f515d8623ad9b /src/H5Cpkg.h | |
parent | ec48fb8dfdb4f2f59f22a5efb6b950aafcac449d (diff) | |
download | hdf5-5d0be1b196570ac2c08ffe0b61ac6a45b6ab7f3f.zip hdf5-5d0be1b196570ac2c08ffe0b61ac6a45b6ab7f3f.tar.gz hdf5-5d0be1b196570ac2c08ffe0b61ac6a45b6ab7f3f.tar.bz2 |
Manual sync with develop (#95)
Brings all features from develop. Note that RELEASE.txt has not been
updated (will be done in a future PR).
Diffstat (limited to 'src/H5Cpkg.h')
-rw-r--r-- | src/H5Cpkg.h | 454 |
1 files changed, 303 insertions, 151 deletions
diff --git a/src/H5Cpkg.h b/src/H5Cpkg.h index 409dccc..410fc3e 100644 --- a/src/H5Cpkg.h +++ b/src/H5Cpkg.h @@ -59,6 +59,13 @@ /* Initial allocated size of the "flush_dep_parent" array */ #define H5C_FLUSH_DEP_PARENT_INIT 8 + +/* Set to TRUE to enable the slist optimization. If this field is TRUE, + * the slist is disabled whenever a flush is not in progress. + */ +#define H5C__SLIST_OPT_ENABLED TRUE + + /**************************************************************************** * * We maintain doubly linked lists of instances of H5C_cache_entry_t for a @@ -1573,9 +1580,27 @@ if ( ( (cache_ptr)->index_size != \ * Added code to maintain the cache_ptr->slist_ring_len * and cache_ptr->slist_ring_size arrays. * + * JRM -- 4/29/20 + * Reworked macro to support the slist_enabled field + * of H5C_t. If slist_enabled == TRUE, the macro + * functions as before. Otherwise, the macro is a no-op, + * and the slist must be empty. + * *------------------------------------------------------------------------- */ +/* NOTE: The H5C__INSERT_ENTRY_IN_SLIST() macro is set up so that + * + * H5C_DO_SANITY_CHECKS + * + * and + * + * H5C_DO_SLIST_SANITY_CHECKS + * + * can be selected independantly. This is easy to miss as the + * two #defines are easy to confuse. + */ + #if H5C_DO_SLIST_SANITY_CHECKS #define ENTRY_IN_SLIST(cache_ptr, entry_ptr) \ @@ -1594,33 +1619,43 @@ if ( ( (cache_ptr)->index_size != \ { \ HDassert( (cache_ptr) ); \ HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (entry_ptr) ); \ - HDassert( (entry_ptr)->size > 0 ); \ - HDassert( H5F_addr_defined((entry_ptr)->addr) ); \ - HDassert( !((entry_ptr)->in_slist) ); \ - HDassert( !ENTRY_IN_SLIST((cache_ptr), (entry_ptr)) ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ \ - if(H5SL_insert((cache_ptr)->slist_ptr, entry_ptr, &(entry_ptr)->addr) < 0) \ - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, (fail_val), "can't insert entry in skip list") \ + if ( (cache_ptr)->slist_enabled ) { \ \ - (entry_ptr)->in_slist = TRUE; \ - (cache_ptr)->slist_changed = TRUE; \ - (cache_ptr)->slist_len++; \ - (cache_ptr)->slist_size += (entry_ptr)->size; \ - ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])++; \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (entry_ptr)->size; \ - (cache_ptr)->slist_len_increase++; \ - (cache_ptr)->slist_size_increase += (int64_t)((entry_ptr)->size); \ + HDassert( (entry_ptr) ); \ + HDassert( (entry_ptr)->size > 0 ); \ + HDassert( H5F_addr_defined((entry_ptr)->addr) ); \ + HDassert( !((entry_ptr)->in_slist) ); \ + HDassert( ! ENTRY_IN_SLIST((cache_ptr), (entry_ptr)) ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - HDassert( (cache_ptr)->slist_size > 0 ); \ + if ( H5SL_insert((cache_ptr)->slist_ptr, entry_ptr, \ + &((entry_ptr)->addr)) < 0) \ + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, (fail_val), \ + "can't insert entry in skip list") \ \ + (entry_ptr)->in_slist = TRUE; \ + (cache_ptr)->slist_changed = TRUE; \ + (cache_ptr)->slist_len++; \ + (cache_ptr)->slist_size += (entry_ptr)->size; \ + ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])++; \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (entry_ptr)->size;\ + (cache_ptr)->slist_len_increase++; \ + (cache_ptr)->slist_size_increase += (int64_t)((entry_ptr)->size); \ + \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + HDassert( (cache_ptr)->slist_size > 0 ); \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__INSERT_ENTRY_IN_SLIST */ #else /* H5C_DO_SANITY_CHECKS */ @@ -1629,31 +1664,42 @@ if ( ( (cache_ptr)->index_size != \ { \ HDassert( (cache_ptr) ); \ HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (entry_ptr) ); \ - HDassert( (entry_ptr)->size > 0 ); \ - HDassert( H5F_addr_defined((entry_ptr)->addr) ); \ - HDassert( !((entry_ptr)->in_slist) ); \ - HDassert( !ENTRY_IN_SLIST((cache_ptr), (entry_ptr)) ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ \ - if(H5SL_insert((cache_ptr)->slist_ptr, entry_ptr, &(entry_ptr)->addr) < 0) \ - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, (fail_val), "can't insert entry in skip list") \ + if ( (cache_ptr)->slist_enabled ) { \ + \ + HDassert( (entry_ptr) ); \ + HDassert( (entry_ptr)->size > 0 ); \ + HDassert( ! ENTRY_IN_SLIST((cache_ptr), (entry_ptr)) ); \ + HDassert( H5F_addr_defined((entry_ptr)->addr) ); \ + HDassert( !((entry_ptr)->in_slist) ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ + HDassert( (cache_ptr)->slist_ptr ); \ \ - (entry_ptr)->in_slist = TRUE; \ - (cache_ptr)->slist_changed = TRUE; \ - (cache_ptr)->slist_len++; \ - (cache_ptr)->slist_size += (entry_ptr)->size; \ - ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])++; \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (entry_ptr)->size; \ + if ( H5SL_insert((cache_ptr)->slist_ptr, entry_ptr, \ + &((entry_ptr)->addr)) < 0) \ + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, (fail_val), \ + "can't insert entry in skip list") \ \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - HDassert( (cache_ptr)->slist_size > 0 ); \ + (entry_ptr)->in_slist = TRUE; \ + (cache_ptr)->slist_changed = TRUE; \ + (cache_ptr)->slist_len++; \ + (cache_ptr)->slist_size += (entry_ptr)->size; \ + ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])++; \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (entry_ptr)->size;\ \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + HDassert( (cache_ptr)->slist_size > 0 ); \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__INSERT_ENTRY_IN_SLIST */ #endif /* H5C_DO_SANITY_CHECKS */ @@ -1671,79 +1717,127 @@ if ( ( (cache_ptr)->index_size != \ * * Programmer: John Mainzer, 5/10/04 * + * Modifications: + * + * JRM -- 7/21/04 + * Updated function for the addition of the hash table. + * + * JRM - 7/27/04 + * Converted from the function H5C_remove_entry_from_tree() + * to the macro H5C__REMOVE_ENTRY_FROM_TREE in the hopes of + * wringing a little more performance out of the cache. + * + * QAK -- 11/27/04 + * Switched over to using skip list routines. + * + * JRM -- 3/28/07 + * Updated sanity checks for the new is_read_only and + * ro_ref_count fields in H5C_cache_entry_t. + * + * JRM -- 12/13/14 + * Added code to set cache_ptr->slist_changed to TRUE + * when an entry is removed from the slist. + * + * JRM -- 4/29/20 + * Reworked macro to support the slist_enabled field + * of H5C_t. If slist_enabled == TRUE, the macro + * functions as before. Otherwise, the macro is a no-op, + * and the slist must be empty. + * *------------------------------------------------------------------------- */ #if H5C_DO_SANITY_CHECKS -#define H5C__REMOVE_ENTRY_FROM_SLIST(cache_ptr, entry_ptr, during_flush) \ -{ \ - HDassert( (cache_ptr) ); \ - HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (entry_ptr) ); \ - HDassert( !((entry_ptr)->is_read_only) ); \ - HDassert( ((entry_ptr)->ro_ref_count) == 0 ); \ - HDassert( (entry_ptr)->size > 0 ); \ - HDassert( (entry_ptr)->in_slist ); \ - HDassert( (cache_ptr)->slist_ptr ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ - \ - if ( H5SL_remove((cache_ptr)->slist_ptr, &(entry_ptr)->addr) \ - != (entry_ptr) ) \ - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, FAIL, "can't delete entry from skip list") \ - \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - if(!(during_flush)) \ - (cache_ptr)->slist_changed = TRUE; \ - (cache_ptr)->slist_len--; \ - HDassert( (cache_ptr)->slist_size >= (entry_ptr)->size ); \ - (cache_ptr)->slist_size -= (entry_ptr)->size; \ - ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])--; \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >= \ - (entry_ptr)->size ); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (entry_ptr)->size; \ - (cache_ptr)->slist_len_increase--; \ - (cache_ptr)->slist_size_increase -= (int64_t)((entry_ptr)->size); \ - (entry_ptr)->in_slist = FALSE; \ +#define H5C__REMOVE_ENTRY_FROM_SLIST(cache_ptr, entry_ptr, during_flush) \ +{ \ + HDassert( (cache_ptr) ); \ + HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ + \ + if ( (cache_ptr)->slist_enabled ) { \ + \ + HDassert( (entry_ptr) ); \ + HDassert( !((entry_ptr)->is_read_only) ); \ + HDassert( ((entry_ptr)->ro_ref_count) == 0 ); \ + HDassert( (entry_ptr)->size > 0 ); \ + HDassert( (entry_ptr)->in_slist ); \ + HDassert( (cache_ptr)->slist_ptr ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ + HDassert( (cache_ptr)->slist_size >= (entry_ptr)->size ); \ + \ + if ( H5SL_remove((cache_ptr)->slist_ptr, &(entry_ptr)->addr) \ + != (entry_ptr) ) \ + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, FAIL, \ + "can't delete entry from skip list") \ + \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + if(!(during_flush)) \ + (cache_ptr)->slist_changed = TRUE; \ + (cache_ptr)->slist_len--; \ + HDassert( (cache_ptr)->slist_size >= (entry_ptr)->size ); \ + (cache_ptr)->slist_size -= (entry_ptr)->size; \ + ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])--; \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >= \ + (entry_ptr)->size ); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (entry_ptr)->size;\ + (cache_ptr)->slist_len_increase--; \ + (cache_ptr)->slist_size_increase -= (int64_t)((entry_ptr)->size); \ + (entry_ptr)->in_slist = FALSE; \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__REMOVE_ENTRY_FROM_SLIST */ #else /* H5C_DO_SANITY_CHECKS */ -#define H5C__REMOVE_ENTRY_FROM_SLIST(cache_ptr, entry_ptr, during_flush) \ -{ \ - HDassert( (cache_ptr) ); \ - HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (entry_ptr) ); \ - HDassert( !((entry_ptr)->is_read_only) ); \ - HDassert( ((entry_ptr)->ro_ref_count) == 0 ); \ - HDassert( (entry_ptr)->in_slist ); \ - HDassert( (cache_ptr)->slist_ptr ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ - \ - if ( H5SL_remove((cache_ptr)->slist_ptr, &(entry_ptr)->addr) \ - != (entry_ptr) ) \ - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, FAIL, "can't delete entry from skip list") \ - \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - if(!(during_flush)) \ - (cache_ptr)->slist_changed = TRUE; \ - (cache_ptr)->slist_len--; \ - HDassert( (cache_ptr)->slist_size >= (entry_ptr)->size ); \ - (cache_ptr)->slist_size -= (entry_ptr)->size; \ - ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])--; \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >= \ - (entry_ptr)->size ); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (entry_ptr)->size; \ - (entry_ptr)->in_slist = FALSE; \ +#define H5C__REMOVE_ENTRY_FROM_SLIST(cache_ptr, entry_ptr, during_flush) \ +{ \ + HDassert( (cache_ptr) ); \ + HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ + \ + if ( (cache_ptr)->slist_enabled ) { \ + \ + HDassert( (entry_ptr) ); \ + HDassert( !((entry_ptr)->is_read_only) ); \ + HDassert( ((entry_ptr)->ro_ref_count) == 0 ); \ + HDassert( (entry_ptr)->in_slist ); \ + HDassert( (cache_ptr)->slist_ptr ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ + \ + if ( H5SL_remove((cache_ptr)->slist_ptr, &(entry_ptr)->addr) \ + != (entry_ptr) ) \ + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, FAIL, \ + "can't delete entry from skip list") \ + \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + if(!(during_flush)) \ + (cache_ptr)->slist_changed = TRUE; \ + (cache_ptr)->slist_len--; \ + HDassert( (cache_ptr)->slist_size >= (entry_ptr)->size ); \ + (cache_ptr)->slist_size -= (entry_ptr)->size; \ + ((cache_ptr)->slist_ring_len[(entry_ptr)->ring])--; \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >= \ + (entry_ptr)->size ); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (entry_ptr)->size;\ + (entry_ptr)->in_slist = FALSE; \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__REMOVE_ENTRY_FROM_SLIST */ #endif /* H5C_DO_SANITY_CHECKS */ @@ -1781,6 +1875,12 @@ if ( ( (cache_ptr)->index_size != \ * Added code to maintain the cache_ptr->slist_ring_len * and cache_ptr->slist_ring_size arrays. * + * JRM -- 4/29/20 + * Reworked macro to support the slist_enabled field + * of H5C_t. If slist_enabled == TRUE, the macro + * functions as before. Otherwise, the macro is a no-op, + * and the slist must be empty. + * *------------------------------------------------------------------------- */ @@ -1790,32 +1890,43 @@ if ( ( (cache_ptr)->index_size != \ { \ HDassert( (cache_ptr) ); \ HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (old_size) > 0 ); \ - HDassert( (new_size) > 0 ); \ - HDassert( (old_size) <= (cache_ptr)->slist_size ); \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - HDassert( ((cache_ptr)->slist_len > 1) || \ - ( (cache_ptr)->slist_size == (old_size) ) ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ \ - (cache_ptr)->slist_size -= (old_size); \ - (cache_ptr)->slist_size += (new_size); \ + if ( (cache_ptr)->slist_enabled ) { \ + \ + HDassert( (old_size) > 0 ); \ + HDassert( (new_size) > 0 ); \ + HDassert( (old_size) <= (cache_ptr)->slist_size ); \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + HDassert( ((cache_ptr)->slist_len > 1) || \ + ( (cache_ptr)->slist_size == (old_size) ) ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ + \ + (cache_ptr)->slist_size -= (old_size); \ + (cache_ptr)->slist_size += (new_size); \ + \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] \ + >= (old_size) ); \ \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >=(old_size) ); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (old_size); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (new_size); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (old_size); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (new_size); \ \ - (cache_ptr)->slist_size_increase -= (int64_t)(old_size); \ - (cache_ptr)->slist_size_increase += (int64_t)(new_size); \ + (cache_ptr)->slist_size_increase -= (int64_t)(old_size); \ + (cache_ptr)->slist_size_increase += (int64_t)(new_size); \ \ - HDassert( (new_size) <= (cache_ptr)->slist_size ); \ - HDassert( ( (cache_ptr)->slist_len > 1 ) || \ - ( (cache_ptr)->slist_size == (new_size) ) ); \ + HDassert( (new_size) <= (cache_ptr)->slist_size ); \ + HDassert( ( (cache_ptr)->slist_len > 1 ) || \ + ( (cache_ptr)->slist_size == (new_size) ) ); \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__UPDATE_SLIST_FOR_SIZE_CHANGE */ #else /* H5C_DO_SANITY_CHECKS */ @@ -1824,29 +1935,39 @@ if ( ( (cache_ptr)->index_size != \ { \ HDassert( (cache_ptr) ); \ HDassert( (cache_ptr)->magic == H5C__H5C_T_MAGIC ); \ - HDassert( (old_size) > 0 ); \ - HDassert( (new_size) > 0 ); \ - HDassert( (old_size) <= (cache_ptr)->slist_size ); \ - HDassert( (cache_ptr)->slist_len > 0 ); \ - HDassert( ((cache_ptr)->slist_len > 1) || \ - ( (cache_ptr)->slist_size == (old_size) ) ); \ - HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ - HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ - HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_len ); \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ - (cache_ptr)->slist_size ); \ \ - (cache_ptr)->slist_size -= (old_size); \ - (cache_ptr)->slist_size += (new_size); \ + if ( (cache_ptr)->slist_enabled ) { \ + \ + HDassert( (old_size) > 0 ); \ + HDassert( (new_size) > 0 ); \ + HDassert( (old_size) <= (cache_ptr)->slist_size ); \ + HDassert( (cache_ptr)->slist_len > 0 ); \ + HDassert( ((cache_ptr)->slist_len > 1) || \ + ( (cache_ptr)->slist_size == (old_size) ) ); \ + HDassert( (entry_ptr)->ring > H5C_RING_UNDEFINED ); \ + HDassert( (entry_ptr)->ring < H5C_RING_NTYPES ); \ + HDassert( (cache_ptr)->slist_ring_len[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_len ); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr)->ring] <= \ + (cache_ptr)->slist_size ); \ + \ + (cache_ptr)->slist_size -= (old_size); \ + (cache_ptr)->slist_size += (new_size); \ \ - HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >=(old_size) ); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (old_size); \ - ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (new_size); \ + HDassert( (cache_ptr)->slist_ring_size[(entry_ptr->ring)] >= \ + (old_size) ); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) -= (old_size); \ + ((cache_ptr)->slist_ring_size[(entry_ptr)->ring]) += (new_size); \ \ - HDassert( (new_size) <= (cache_ptr)->slist_size ); \ - HDassert( ( (cache_ptr)->slist_len > 1 ) || \ - ( (cache_ptr)->slist_size == (new_size) ) ); \ + HDassert( (new_size) <= (cache_ptr)->slist_size ); \ + HDassert( ( (cache_ptr)->slist_len > 1 ) || \ + ( (cache_ptr)->slist_size == (new_size) ) ); \ + \ + } else { /* slist disabled */ \ + \ + HDassert( (cache_ptr)->slist_len == 0 ); \ + HDassert( (cache_ptr)->slist_size == 0 ); \ + } \ } /* H5C__UPDATE_SLIST_FOR_SIZE_CHANGE */ #endif /* H5C_DO_SANITY_CHECKS */ @@ -3752,6 +3873,36 @@ typedef struct H5C_tag_info_t { * are flushed. (this has been changed -- dirty entries are now removed from * the skip list as they are flushed. JRM - 10/25/05) * + * Update 4/21/20: + * + * Profiling indicates that the cost of maintaining the skip list is + * significant. As it is only used on flush and close, maintaining it + * only when needed is an obvious optimization. + * + * To do this, we add a flag to control maintenanace of the skip list. + * This flag is initially set to FALSE, which disables all operations + * on the skip list. + * + * At the beginning of either flush or close, we scan the index list, + * insert all dirtly entries in the skip list, and enable operations + * on skip list by setting above control flag to true. + * + * At the end of a complete flush, we verify that the skip list is empty, + * and set the control flag back to false, so as to avoid skip list + * maintenance overhead until the next flush or close. + * + * In the case of a partial flush (i.e. flush marked entries), we remove + * all remaining entries from the skip list, and then set the control flag + * back to false -- again avoiding skip list maintenance overhead until + * the next flush or close. + * + * slist_enabled: Boolean flag used to control operation of the skip + * list. If this filed is FALSE, operations on the + * slist are no-ops, and the slist must be empty. If + * it is TRUE, operations on the slist proceed as usual, + * and all dirty entries in the metadata cache must be + * listed in the slist. + * * slist_changed: Boolean flag used to indicate whether the contents of * the slist has changed since the last time this flag was * reset. This is used in the cache flush code to detect @@ -4698,6 +4849,7 @@ struct H5C_t { H5C_cache_entry_t * entry_watched_for_removal; /* Fields for maintaining list of in-order entries, for flushing */ + hbool_t slist_enabled; hbool_t slist_changed; uint32_t slist_len; size_t slist_size; |