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authorNeil Fortner <nfortne2@hdfgroup.org>2009-04-08 17:05:17 (GMT)
committerNeil Fortner <nfortne2@hdfgroup.org>2009-04-08 17:05:17 (GMT)
commit48b127f628725a89a79dbaa95a784501383d6259 (patch)
tree87760c19fdc4e14403de440accc745ce5ee14b3d /src/H5SL.c
parent428a7c52435721d6a9e89ccdc4c1e8fe4060864a (diff)
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[svn-r16699] Purpose: Fix bug 503
Description: Changed Skip list package to use a deterministic skip list. This allows the skip list package to avoid calling rand() and srand(), even on machines without rand_r(). There is no longer a p-value or maximum level for skip lists. Tested: jam, smirom, linew (h5committest)
Diffstat (limited to 'src/H5SL.c')
-rw-r--r--src/H5SL.c859
1 files changed, 584 insertions, 275 deletions
diff --git a/src/H5SL.c b/src/H5SL.c
index fe810d1..31e81c2 100644
--- a/src/H5SL.c
+++ b/src/H5SL.c
@@ -16,17 +16,34 @@
/*
* Purpose: Provides a skip list abstract data type.
*
+ * (See "Deterministic Skip Lists" by Munro, Papadakis & Sedgewick)
+ *
+ * (Implementation changed to a deterministic skip list from a
+ * probabilistic one. This implementation uses a 1-2-3 skip list
+ * using arrays, as described by Munro, Papadakis & Sedgewick.
+ *
+ * Arrays are allocated using a free list factory for each size
+ * that is a power of two. Factories are created as soon as they
+ * are needed, and are never destroyed until the package is shut
+ * down. There is no longer a maximum level or "p" value.
+ * -NAF 2008/11/05)
+ *
* (See "Skip Lists: A Probabilistic Alternative to Balanced Trees"
* by William Pugh for additional information)
*
* (This implementation has the optimization for reducing key
* key comparisons mentioned in section 3.5 of "A Skip List
- * Cookbook" by William Pugh)
+ * Cookbook" by William Pugh
+ * -Removed as our implementation of this was useless for a 1-2-3
+ * skip list. The implementation in that document hurts
+ * performance, at least for integer keys. -NAF)
*
* (Also, this implementation has a couple of home-grown
* optimizations, including setting the "update" vector to the
* actual 'forward' pointer to update, instead of the node
- * containing the forward pointer -QAK)
+ * containing the forward pointer -QAK
+ * -No longer uses update vector, as insertions/deletions are now
+ * always at level 0. -NAF)
*
* (Note: This implementation does not have the information for
* implementing the "Linear List Operations" (like insert/delete/
@@ -36,9 +53,6 @@
* (This implementation has an additional backward pointer, which
* allows the list to be iterated in reverse)
*
- * (We should also look into "Deterministic Skip Lists" (see
- * paper by Munro, Papadakis & Sedgewick))
- *
* (There's also an article on "Alternating Skip Lists", which
* are similar to deterministic skip lists, in the August 2000
* issue of Dr. Dobb's Journal)
@@ -54,61 +68,28 @@
#include "H5Eprivate.h" /* Error handling */
#include "H5FLprivate.h" /* Free Lists */
#include "H5SLprivate.h" /* Skip list routines */
+#include "H5MMprivate.h" /* Memory management */
/* Local Macros */
-/* Define the code template for insertions for the "OP" in the H5SL_LOCATE macro */
-#define H5SL_LOCATE_INSERT_FOUND(SLIST, X, UPDATE, I) \
- HGOTO_ERROR(H5E_SLIST, H5E_CANTINSERT, NULL, "can't insert duplicate key")
-
-/* Define the code template for removals for the "OP" in the H5SL_LOCATE macro */
-/* (NOTE: the code in H5SL_remove_first() is largely the same, fix bugs in both places) */
-#define H5SL_LOCATE_REMOVE_FOUND(SLIST,X,UPDATE,I) \
- void *tmp; \
- \
- for(I=0; I<=(int)SLIST->curr_level; I++) { \
- if(*UPDATE[I]!=X) \
- break; \
- *UPDATE[I]=X->forward[I]; \
- } /* end for */ \
- if(SLIST->last==X) \
- SLIST->last=X->backward; \
- else \
- X->forward[0]->backward=X->backward; \
- tmp=X->item; \
- H5FL_ARR_FREE(H5SL_node_ptr_t,X); \
- while(SLIST->curr_level>0 && SLIST->header->forward[SLIST->curr_level]==NULL) \
- SLIST->curr_level--; \
- SLIST->nobjs--; \
- HGOTO_DONE(tmp);
-
/* Define the code template for searches for the "OP" in the H5SL_LOCATE macro */
-#define H5SL_LOCATE_SEARCH_FOUND(SLIST, X, UPDATE, I) \
+#define H5SL_LOCATE_SEARCH_FOUND(SLIST, X, I) \
HGOTO_DONE(X->item);
/* Define the code template for finds for the "OP" in the H5SL_LOCATE macro */
-#define H5SL_LOCATE_FIND_FOUND(SLIST, X, UPDATE, I) \
+#define H5SL_LOCATE_FIND_FOUND(SLIST, X, I) \
HGOTO_DONE(X);
-/* Define a code template for "OP"s that update the "update" vector for the H5SL_LOCATE macro */
-#define H5SL_LOCATE_INSERT_UPDATE(X, UPDATE, I) \
- UPDATE[I] = &X->forward[I];
-#define H5SL_LOCATE_REMOVE_UPDATE(X, UPDATE, I) \
- UPDATE[I] = &X->forward[I];
-
-/* Define a code template for "OP"s that _DON'T_ update the "update" vector for the H5SL_LOCATE macro */
-#define H5SL_LOCATE_SEARCH_UPDATE(X, UPDATE, I)
-#define H5SL_LOCATE_FIND_UPDATE(X, UPDATE, I)
-
-
/* Define a code template for comparing scalar keys for the "CMP" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_SCALAR_CMP(TYPE, PNODE, PKEY, HASHVAL) \
(*(TYPE *)((PNODE)->key) < *(TYPE *)PKEY)
/* Define a code template for comparing string keys for the "CMP" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_STRING_CMP(TYPE, PNODE, PKEY, HASHVAL) \
- (((PNODE)->hashval == HASHVAL) ? (HDstrcmp((PNODE)->key, PKEY) < 0) : ((PNODE)->hashval < HASHVAL))
+ (((PNODE)->hashval == HASHVAL) ? \
+ (HDstrcmp((const char *)(PNODE)->key, (const char *)PKEY) < 0) : \
+ ((PNODE)->hashval < HASHVAL))
/* Define a code template for comparing H5_obj_t keys for the "CMP" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_OBJ_CMP(TYPE, PNODE, PKEY, HASHVAL) \
@@ -121,7 +102,7 @@
/* Define a code template for comparing string keys for the "EQ" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_STRING_EQ(TYPE, PNODE, PKEY, HASHVAL) \
- (((PNODE)->hashval == HASHVAL) && (HDstrcmp(((PNODE)->key), PKEY) == 0))
+ (((PNODE)->hashval == HASHVAL) && (HDstrcmp((const char *)(PNODE)->key, (const char *)PKEY) == 0))
/* Define a code template for comparing H5_obj_t keys for the "EQ" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_OBJ_EQ(TYPE, PNODE, PKEY, HASHVAL) \
@@ -133,50 +114,358 @@
/* Define a code template for initializing the hash value for string keys for the "HASHINIT" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_STRING_HASHINIT(KEY, HASHVAL) \
- HASHVAL = H5_hash_string(KEY);
+ HASHVAL = H5_hash_string((const char *)KEY);
/* Define a code template for initializing the hash value for H5_obj_t keys for the "HASHINIT" in the H5SL_LOCATE macro */
#define H5SL_LOCATE_OBJ_HASHINIT(KEY, HASHVAL)
/* Macro used to find node for operation */
-#define H5SL_LOCATE(OP, CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL) \
+#define H5SL_LOCATE(OP, CMP, SLIST, X, TYPE, KEY, HASHVAL) \
{ \
- H5SL_node_t *_checked; /* Pointer to last node checked */ \
int _i; /* Local index variable */ \
+ unsigned _count; /* Num nodes searched at this height */ \
\
- _checked = NULL; \
H5_GLUE3(H5SL_LOCATE_,CMP,_HASHINIT)(KEY, HASHVAL) \
for(_i = (int)SLIST->curr_level; _i >= 0; _i--) { \
- if(X->forward[_i] != _checked) { \
- while(X->forward[_i] && H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, X->forward[_i], KEY, HASHVAL) ) \
- X = X->forward[_i]; \
- _checked = X->forward[_i]; \
- } /* end if */ \
- H5_GLUE3(H5SL_LOCATE_,OP,_UPDATE)(X, UPDATE, _i) \
+ _count = 0; \
+ while(_count < 3 && X->forward[_i] && \
+ H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, X->forward[_i], KEY, HASHVAL) ) { \
+ X = X->forward[_i]; \
+ _count++; \
+ } /* end while */ \
} /* end for */ \
X = X->forward[0]; \
if(X != NULL && H5_GLUE3(H5SL_LOCATE_,CMP,_EQ)(TYPE, X, KEY, HASHVAL) ) { \
/* What to do when a node is found */ \
- H5_GLUE3(H5SL_LOCATE_,OP,_FOUND)(SLIST, X, UPDATE, _i) \
+ H5_GLUE3(H5SL_LOCATE_,OP,_FOUND)(SLIST, X, _i) \
} /* end if */ \
}
-/* Macro used to insert node */
-#define H5SL_INSERT(CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL) \
- H5SL_LOCATE(INSERT, CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL)
+
+/* Macro used to grow a node by 1. Does not update pointers. LVL is the current
+ * level of X. Does not update LVL but does update X->lvl. */
+#define H5SL_GROW(X, LVL) \
+{ \
+ /* Check if we need to increase allocation of forward pointers */ \
+ if(LVL + 1 >= 1u << X->log_nalloc) { \
+ H5SL_node_t **_tmp; \
+ HDassert(LVL + 1 == 1u << X->log_nalloc); \
+ /* Double the amount of allocated space */ \
+ X->log_nalloc++; \
+ \
+ /* Check if we need to create a new factory */ \
+ if(X->log_nalloc >= H5SL_fac_nused_g) { \
+ HDassert(X->log_nalloc == H5SL_fac_nused_g); \
+ \
+ /* Check if we need to allocate space for the factory pointer*/ \
+ if(H5SL_fac_nused_g >= H5SL_fac_nalloc_g) { \
+ HDassert(H5SL_fac_nused_g == H5SL_fac_nalloc_g); \
+ /* Double the size of the array of factory pointers */ \
+ H5SL_fac_nalloc_g *= 2; \
+ H5SL_fac_g = (H5FL_fac_head_t **)H5MM_realloc((void *)H5SL_fac_g, \
+ H5SL_fac_nalloc_g * sizeof(H5FL_fac_head_t *)); \
+ } /* end if */ \
+ \
+ /* Create the new factory */ \
+ H5SL_fac_g[H5SL_fac_nused_g] = H5FL_fac_init((1u << H5SL_fac_nused_g) * sizeof(H5SL_node_t *)); \
+ H5SL_fac_nused_g++; \
+ } /* end if */ \
+ \
+ /* Allocate space for new forward pointers */ \
+ if(NULL == (_tmp = (H5SL_node_t **)H5FL_FAC_MALLOC(H5SL_fac_g[X->log_nalloc]))) \
+ HGOTO_ERROR(H5E_SLIST, H5E_NOSPACE, NULL, "memory allocation failed") \
+ HDmemcpy((void *)_tmp, (const void *)X->forward, (LVL + 1) * sizeof(H5SL_node_t *)); \
+ (void)H5FL_FAC_FREE(H5SL_fac_g[X->log_nalloc-1], (void *)X->forward); \
+ X->forward = _tmp; \
+ } /* end if */ \
+ \
+ X->level++; \
+}
+
+
+/* Macro used to shrink a node by 1. Does not update pointers. LVL is the
+ * current level of X. Does not update LVL but does update X->level. */
+#define H5SL_SHRINK(X, LVL) \
+{ \
+ /* Check if we can reduce the allocation of forward pointers */ \
+ if(LVL <= 1u << (X->log_nalloc - 1)) { \
+ H5SL_node_t **_tmp; \
+ HDassert(LVL == 1u << (X->log_nalloc - 1)); \
+ X->log_nalloc--; \
+ \
+ /* Allocate space for new forward pointers */ \
+ if(NULL == (_tmp = (H5SL_node_t **)H5FL_FAC_MALLOC(H5SL_fac_g[X->log_nalloc]))) \
+ HGOTO_ERROR(H5E_SLIST, H5E_NOSPACE, NULL, "memory allocation failed") \
+ HDmemcpy((void *)_tmp, (const void *)X->forward, (LVL) * sizeof(H5SL_node_t *)); \
+ (void)H5FL_FAC_FREE(H5SL_fac_g[X->log_nalloc+1], (void *)X->forward); \
+ X->forward = _tmp; \
+ } /* end if */ \
+ \
+ X->level--; \
+}
+
+
+/* Macro used to grow the level of a node by 1, with appropriate changes to the
+ * head node if necessary. PREV is the previous node of the height that X is to
+ * grow to. */
+#define H5SL_PROMOTE(SLIST, X, PREV) \
+{ \
+ size_t _lvl = X->level; \
+ \
+ H5SL_GROW(X, _lvl); \
+ \
+ if(_lvl == (size_t) SLIST->curr_level) { \
+ HDassert(PREV == SLIST->header); \
+ /* Grow the head */ \
+ H5SL_GROW(PREV, _lvl); \
+ SLIST->curr_level++; \
+ X->forward[_lvl+1] = NULL; \
+ } else { \
+ HDassert(_lvl < (size_t) SLIST->curr_level); \
+ X->forward[_lvl+1] = PREV->forward[_lvl+1]; \
+ } /* end else */ \
+ PREV->forward[_lvl+1] = X; \
+}
+
+
+/* Macro used to reduce the level of a node by 1. Does not update the head node
+ * "current level". PREV is the previous node of the currrent height of X. */
+#define H5SL_DEMOTE(X, PREV) \
+{ \
+ size_t _lvl = X->level; \
+ \
+ HDassert(PREV->forward[_lvl] == X); \
+ PREV->forward[_lvl] = X->forward[_lvl]; \
+ H5SL_SHRINK(X, _lvl); \
+}
+
+
+/* Macro used to insert node. Does not actually insert the node. After running
+ * this macro, X will contain the node before where the new node should be
+ * inserted (at level 0). */
+#define H5SL_INSERT(CMP, SLIST, X, TYPE, KEY, HASHVAL) \
+{ \
+ H5SL_node_t *_last = X; /* Lowest node in the current gap */ \
+ H5SL_node_t *_next = NULL; /* Highest node in the currect gap */ \
+ H5SL_node_t *_drop; /* Low node of the gap to drop into */ \
+ int _count; /* Number of nodes in the current gap */ \
+ int _i; \
+ \
+ H5_GLUE3(H5SL_LOCATE_,CMP,_HASHINIT)(KEY, HASHVAL) \
+ for(_i = (int)SLIST->curr_level; _i >= 0; _i--) { \
+ /* Search for the node to drop into, also count the number of nodes */ \
+ /* of height _i in this gap */ \
+ _drop = NULL; \
+ for(_count = 0; ; _count++) { \
+ /* Terminate if this is the last node in the gap */ \
+ if(X->forward[_i] == _next) { \
+ if(!_drop) \
+ _drop = X; \
+ break; \
+ } /* end if */ \
+ \
+ /* Check if this node is the start of the next gap */ \
+ if(!_drop && !H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, X->forward[_i], KEY, HASHVAL)) \
+ _drop = X; \
+ \
+ /* No need to check the last node in the gap if there are 3, as */ \
+ /* there cannot be a fourth */ \
+ if(_count == 2) { \
+ if(!_drop) \
+ _drop = X->forward[_i]; \
+ _count = 3; \
+ break; \
+ } \
+ X = X->forward[_i]; \
+ } /* end for */ \
+ HDassert(!_drop->forward[_i] || \
+ !H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, _drop->forward[_i], KEY, HASHVAL)); \
+ \
+ /* Promote the middle node if necessary */ \
+ if(_count == 3) { \
+ HDassert(X == _last->forward[_i]->forward[_i]); \
+ H5SL_PROMOTE(SLIST, X, _last) \
+ } \
+ \
+ /* Prepare to drop down */ \
+ X = _last = _drop; \
+ _next = _drop->forward[_i]; \
+ } /* end for */ \
+ \
+ if(_next && H5_GLUE3(H5SL_LOCATE_,CMP,_EQ)(TYPE, _next, KEY, HASHVAL)) \
+ HGOTO_ERROR(H5E_SLIST, H5E_CANTINSERT, NULL, "can't insert duplicate key") \
+}
+
/* Macro used to remove node */
-#define H5SL_REMOVE(CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL) \
- H5SL_LOCATE(REMOVE, CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL)
+#define H5SL_REMOVE(CMP, SLIST, X, TYPE, KEY, HASHVAL) \
+{ \
+ H5SL_node_t *_last = X; /* Lowest node in the current gap */ \
+ H5SL_node_t *_llast = X; /* Lowest node in the previous gap */ \
+ H5SL_node_t *_next = NULL; /* Highest node in the currect gap */ \
+ H5SL_node_t *_drop = NULL; /* Low node of the gap to drop into */ \
+ H5SL_node_t *_ldrop = NULL; /* Low node of gap before the one to drop into */ \
+ H5SL_node_t *_head = SLIST->header; /* Head of the skip list */ \
+ int _count; /* Number of nodes in the current gap */ \
+ int _i = (int)SLIST->curr_level; \
+ \
+ if(_i < 0) \
+ HGOTO_DONE(NULL); \
+ \
+ H5_GLUE3(H5SL_LOCATE_,CMP,_HASHINIT)(KEY, HASHVAL) \
+ \
+ /* Find the gap to drop in to at the highest level */ \
+ while(X && (!X->key || H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, X, KEY, HASHVAL))) { \
+ _llast = _last; \
+ _last = X; \
+ X = X->forward[_i]; \
+ } \
+ _next = X; \
+ \
+ /* Main loop */ \
+ for(_i--; _i >= 0; _i--) { \
+ /* Search for the node to drop into, also count the number of nodes */ \
+ /* of height _i in this gap and keep track of of the node before */ \
+ /* the one to drop into (_ldrop will become _llast, _drop will */ \
+ /* become _last). */ \
+ X = _ldrop = _last; \
+ _drop = NULL; \
+ for(_count = 0; ; _count++) { \
+ /* Terminate if this is the last node in the gap */ \
+ if(X->forward[_i] == _next) { \
+ if(!_drop) \
+ _drop = X; \
+ break; \
+ } /* end if */ \
+ \
+ /* If we have already found the node to drop into and there is */ \
+ /* more than one node in this gap, we can stop searching */ \
+ if(_drop) { \
+ HDassert(_count >= 1); \
+ _count = 2; \
+ break; \
+ } else { /* !_drop */ \
+ /* Check if this node is the start of the next gap */ \
+ if (!H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, X->forward[_i], KEY, HASHVAL)) { \
+ _drop = X; \
+ /* Again check if we can stop searching */ \
+ if(_count) { \
+ _count = 2; \
+ break; \
+ } /* end if */ \
+ } /* end if */ \
+ else \
+ _ldrop = X; \
+ } /* end else */ \
+ \
+ /* No need to check the last node in the gap if there are 3, as */ \
+ /* there cannot be a fourth */ \
+ if(_count == 2) { \
+ if(!_drop) \
+ _drop = X->forward[_i]; \
+ break; \
+ } /* end if */ \
+ X = X->forward[_i]; \
+ } /* end for */ \
+ HDassert(_count >= 1 && _count <= 3); \
+ HDassert(!_drop->forward[_i] || \
+ !H5_GLUE3(H5SL_LOCATE_,CMP,_CMP)(TYPE, _drop->forward[_i], KEY, HASHVAL)); \
+ \
+ /* Check if we need to adjust node heights */ \
+ if(_count == 1) { \
+ /* Check if we are in the first gap */ \
+ if(_llast == _last) { \
+ /* We are in the first gap, count the number of nodes of */ \
+ /* height _i in the next gap. We need only check one node */ \
+ /* to see if we should promote the first node in the next */ \
+ /* gap */ \
+ _llast = _next->forward[_i+1]; \
+ \
+ /* Demote the separator node */ \
+ H5SL_DEMOTE(_next, _last) \
+ \
+ /* If there are 2 or more nodes, promote the first */ \
+ if(_next->forward[_i]->forward[_i] != _llast) { \
+ X = _next->forward[_i]; \
+ H5SL_PROMOTE(SLIST, X, _last) \
+ } else if(!_head->forward[_i+1]) { \
+ /* shrink the header */ \
+ HDassert(_i == SLIST->curr_level - 1); \
+ HDassert((size_t) SLIST->curr_level == _head->level); \
+ \
+ H5SL_SHRINK(_head, (size_t) (_i+1)) \
+ SLIST->curr_level--; \
+ } /* end else */ \
+ } else { \
+ /* We are not in the first gap, count the number of nodes */ \
+ /* of height _i in the previous gap. Note we "look ahead" */ \
+ /* in this loop so X has the value of the last node in the */ \
+ /* previous gap. */ \
+ X = _llast->forward[_i]; \
+ for(_count = 1; _count < 3 && X->forward[_i] != _last; _count++) \
+ X = X->forward[_i]; \
+ HDassert(X->forward[_i] == _last); \
+ \
+ /* Demote the separator node */ \
+ H5SL_DEMOTE(_last, _llast) \
+ \
+ /* If there are 2 or more nodes, promote the last */ \
+ if(_count >= 2) \
+ H5SL_PROMOTE(SLIST, X, _llast) \
+ else if(!_head->forward[_i+1]) { \
+ /* shrink the header */ \
+ HDassert(_i == SLIST->curr_level - 1); \
+ HDassert((size_t) SLIST->curr_level == _head->level); \
+ \
+ H5SL_SHRINK(_head, (size_t) (_i+1)) \
+ SLIST->curr_level--; \
+ } /* end else */ \
+ } /* end else */ \
+ } /* end if */ \
+ \
+ /* Prepare to drop down */ \
+ _llast = _ldrop; \
+ _last = _drop; \
+ _next = _drop->forward[_i]; \
+ } /* end for */ \
+ \
+ /* Check if we've found the node */ \
+ if(_next && H5_GLUE3(H5SL_LOCATE_,CMP,_EQ)(TYPE, _next, KEY, HASHVAL)) { \
+ void *tmp = _next->item; \
+ X = _next; \
+ \
+ /* If the node has a height > 0, swap it with its (lower) neighbor */ \
+ if(X->level) { \
+ X = X->backward; \
+ _next->key = X->key; \
+ _next->item = X->item; \
+ _next->hashval = X->hashval; \
+ } /* end if */ \
+ HDassert(!X->level); \
+ \
+ /* Remove the node */ \
+ X->backward->forward[0] = X->forward[0]; \
+ if(SLIST->last == X) \
+ SLIST->last = X->backward; \
+ else \
+ X->forward[0]->backward = X->backward; \
+ SLIST->nobjs--; \
+ (void)H5FL_FAC_FREE(H5SL_fac_g[0], X->forward); \
+ (void)H5FL_FREE(H5SL_node_t, X); \
+ \
+ HGOTO_DONE(tmp); \
+ } /* end if */ \
+}
+
/* Macro used to search for node */
-#define H5SL_SEARCH(CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL) \
- H5SL_LOCATE(SEARCH, CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL)
+#define H5SL_SEARCH(CMP, SLIST, X, TYPE, KEY, HASHVAL) \
+ H5SL_LOCATE(SEARCH, CMP, SLIST, X, TYPE, KEY, HASHVAL)
/* Macro used to find a node */
-#define H5SL_FIND(CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL) \
- H5SL_LOCATE(FIND, CMP, SLIST, X, UPDATE, TYPE, KEY, HASHVAL)
+#define H5SL_FIND(CMP, SLIST, X, TYPE, KEY, HASHVAL) \
+ H5SL_LOCATE(FIND, CMP, SLIST, X, TYPE, KEY, HASHVAL)
/* Private typedefs & structs */
@@ -186,6 +475,7 @@ struct H5SL_node_t {
const void *key; /* Pointer to node's key */
void *item; /* Pointer to node's item */
size_t level; /* The level of this node */
+ size_t log_nalloc; /* log2(Number of slots allocated in forward) */
uint32_t hashval; /* Hash value for key (only for strings, currently) */
struct H5SL_node_t **forward; /* Array of forward pointers from this node */
struct H5SL_node_t *backward; /* Backward pointer from this node */
@@ -195,9 +485,6 @@ struct H5SL_node_t {
struct H5SL_t {
/* Static values for each list */
H5SL_type_t type; /* Type of skip list */
- double p; /* Probability of using a higher level [0..1) */
- int p1; /* Probability converted into appropriate value for random # generator on this machine */
- size_t max_level; /* Maximum number of levels */
/* Dynamic values for each list */
int curr_level; /* Current top level used in list */
@@ -207,8 +494,7 @@ struct H5SL_t {
};
/* Static functions */
-static size_t H5SL_random_level(int p1, size_t max_level);
-static H5SL_node_t * H5SL_new_node(size_t lvl, void *item, const void *key, uint32_t hashval);
+static H5SL_node_t * H5SL_new_node(void *item, const void *key, uint32_t hashval);
static H5SL_node_t *H5SL_insert_common(H5SL_t *slist, void *item, const void *key);
static herr_t H5SL_release_common(H5SL_t *slist, H5SL_operator_t op, void *op_data);
static herr_t H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data);
@@ -216,9 +502,13 @@ static herr_t H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data
/* Declare a free list to manage the H5SL_t struct */
H5FL_DEFINE_STATIC(H5SL_t);
-/* Declare a "base + array" list to manage the H5SL_node_t struct */
-typedef H5SL_node_t *H5SL_node_ptr_t;
-H5FL_BARR_DEFINE_STATIC(H5SL_node_t,H5SL_node_ptr_t,H5SL_LEVEL_MAX);
+/* Declare a free list to manage the H5SL_node_t struct */
+H5FL_DEFINE_STATIC(H5SL_node_t);
+
+/* Global variables */
+static H5FL_fac_head_t **H5SL_fac_g;
+static size_t H5SL_fac_nused_g;
+static size_t H5SL_fac_nalloc_g;
/*--------------------------------------------------------------------------
@@ -241,13 +531,15 @@ H5FL_BARR_DEFINE_STATIC(H5SL_node_t,H5SL_node_ptr_t,H5SL_LEVEL_MAX);
static herr_t
H5SL_init_interface(void)
{
- time_t curr_time; /* Current time, for seeding random number generator */
-
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_init_interface)
- /* Create randomized set of numbers */
- curr_time=HDtime(NULL);
- HDsrand((unsigned)curr_time);
+ /* Allocate space for array of factories */
+ H5SL_fac_g = (H5FL_fac_head_t **)H5MM_malloc(sizeof(H5FL_fac_head_t *));
+ H5SL_fac_nalloc_g = 1;
+
+ /* Initialize first factory */
+ H5SL_fac_g[0] = H5FL_fac_init(sizeof(H5SL_node_t *));
+ H5SL_fac_nused_g = 1;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SL_init_interface() */
@@ -255,87 +547,45 @@ H5SL_init_interface(void)
/*--------------------------------------------------------------------------
NAME
- H5SL_random_level
- PURPOSE
- Generate a random level
- USAGE
- size_t H5SL_random_level(p,max_level)
- int p1; IN: probability distribution
- size_t max_level; IN: Maximum level for node height
-
- RETURNS
- Returns non-negative level value
- DESCRIPTION
- Count elements in a skip list.
- GLOBAL VARIABLES
- COMMENTS, BUGS, ASSUMPTIONS
- Do we really need a 'random' value, or is a series of nodes with the
- correct heights "good enough". We could track the state of the nodes
- allocated for this list and issue node heights appropriately (i.e. 1,2,
- 1,4,1,2,1,8,...) (or would that be 1,1,2,1,1,2,4,... ?)
- EXAMPLES
- REVISION LOG
---------------------------------------------------------------------------*/
-static size_t
-H5SL_random_level(int p1, size_t max_level)
-{
- size_t lvl; /* Level generated */
-
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_random_level);
-
- /* Account for starting at zero offset */
- max_level--;
-
- lvl=0;
- while(HDrand()<p1 && lvl < max_level)
- lvl++;
-
- FUNC_LEAVE_NOAPI(lvl);
-} /* end H5SL_random_level() */
-
-
-/*--------------------------------------------------------------------------
- NAME
H5SL_new_node
PURPOSE
- Create a new skip list node
+ Create a new skip list node of level 0
USAGE
- H5SL_node_t *H5SL_new_node(lvl,item,key)
- size_t lvl; IN: Level for node height
+ H5SL_node_t *H5SL_new_node(item,key,hasval)
void *item; IN: Pointer to item info for node
void *key; IN: Pointer to key info for node
+ uint32_t hashval; IN: Hash value for node
RETURNS
Returns a pointer to a skip list node on success, NULL on failure.
DESCRIPTION
- Create a new skip list node of the specified height, setting the item
+ Create a new skip list node of the height 0, setting the item
and key values internally.
GLOBAL VARIABLES
COMMENTS, BUGS, ASSUMPTIONS
This routine does _not_ initialize the 'forward' pointers
-
- We should set up a custom free-list for allocating & freeing these sort
- of nodes.
EXAMPLES
REVISION LOG
--------------------------------------------------------------------------*/
static H5SL_node_t *
-H5SL_new_node(size_t lvl, void *item, const void *key, uint32_t hashval)
+H5SL_new_node(void *item, const void *key, uint32_t hashval)
{
H5SL_node_t *ret_value; /* New skip list node */
FUNC_ENTER_NOAPI_NOINIT(H5SL_new_node)
/* Allocate the node */
- if(NULL == (ret_value = (H5SL_node_t *)H5FL_ARR_MALLOC(H5SL_node_ptr_t, (lvl + 1))))
+ if(NULL == (ret_value = (H5SL_node_t *)H5FL_MALLOC(H5SL_node_t)))
HGOTO_ERROR(H5E_SLIST, H5E_NOSPACE, NULL, "memory allocation failed")
/* Initialize node */
ret_value->key = key;
ret_value->item = item;
- ret_value->level = lvl;
+ ret_value->level = 0;
ret_value->hashval = hashval;
- ret_value->forward = (H5SL_node_t **)((unsigned char *)ret_value + sizeof(H5SL_node_t));
+ if(NULL == (ret_value->forward = (H5SL_node_t **)H5FL_FAC_MALLOC(H5SL_fac_g[0])))
+ HGOTO_ERROR(H5E_SLIST, H5E_NOSPACE, NULL, "memory allocation failed")
+ ret_value->log_nalloc = 0;
done:
FUNC_LEAVE_NOAPI(ret_value)
@@ -366,18 +616,16 @@ done:
static H5SL_node_t *
H5SL_insert_common(H5SL_t *slist, void *item, const void *key)
{
- H5SL_node_t **update[H5SL_LEVEL_MAX]; /* 'update' vector */
H5SL_node_t *x; /* Current node to examine */
+ H5SL_node_t *prev; /* Node before the new node */
uint32_t hashval = 0; /* Hash value for key */
- size_t lvl; /* Level of new node */
- int i; /* Local index value */
H5SL_node_t *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5SL_insert_common);
/* Check args */
- assert(slist);
- assert(key);
+ HDassert(slist);
+ HDassert(key);
/* Check internal consistency */
/* (Pre-condition) */
@@ -387,75 +635,60 @@ H5SL_insert_common(H5SL_t *slist, void *item, const void *key)
/* Work through the forward pointers for a node, finding the node at each
* level that is before the location to insert
*/
- x=slist->header;
+ prev=slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_INSERT(SCALAR, slist, x, update, const int, key, -)
+ H5SL_INSERT(SCALAR, slist, prev, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_INSERT(SCALAR, slist, x, update, const haddr_t, key, -)
+ H5SL_INSERT(SCALAR, slist, prev, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_INSERT(STRING, slist, x, update, char *, key, hashval)
+ H5SL_INSERT(STRING, slist, prev, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_INSERT(SCALAR, slist, x, update, const hsize_t, key, -)
+ H5SL_INSERT(SCALAR, slist, prev, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_INSERT(SCALAR, slist, x, update, const unsigned, key, -)
+ H5SL_INSERT(SCALAR, slist, prev, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_INSERT(SCALAR, slist, x, update, const size_t, key, -)
+ H5SL_INSERT(SCALAR, slist, prev, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_INSERT(OBJ, slist, x, update, const H5_obj_t, key, -)
+ H5SL_INSERT(OBJ, slist, prev, const H5_obj_t, key, -)
break;
default:
HDassert(0 && "Unknown skiplist type!");
} /* end switch */
- /* 'key' must not have been found in existing list, if we get here */
-
- /* Generate level for new node */
- lvl=H5SL_random_level(slist->p1,slist->max_level);
- if((int)lvl>slist->curr_level) {
- /* Cap the increase in the current level to just one greater */
- lvl=slist->curr_level+1;
- /* Set the update pointer correctly */
- update[lvl]=&slist->header->forward[lvl];
+ /* 'key' must not have been found in existing list, if we get here */
- /* Increase the maximum level of the list */
- slist->curr_level=(int)lvl;
- } /* end if */
+ if(slist->curr_level < 0)
+ slist->curr_level = 0;
- /* Create new node of proper level */
- if(NULL == (x = H5SL_new_node(lvl, item, key, hashval)))
+ /* Create new node of level 0 */
+ if(NULL == (x = H5SL_new_node(item, key, hashval)))
HGOTO_ERROR(H5E_SLIST ,H5E_NOSPACE, NULL, "can't create new skip list node")
- /* Update the backward links */
- if(*update[0]!=NULL) {
- x->backward=(*update[0])->backward;
- (*update[0])->backward=x;
- } /* end if */
+ /* Update the links */
+ x->backward = prev;
+ x->forward[0] = prev->forward[0];
+ prev->forward[0] = x;
+ if(x->forward[0])
+ x->forward[0]->backward = x;
else {
HDassert(slist->last);
- x->backward=slist->last;
- slist->last=x;
- } /* end else */
-
- /* Link the new node into the existing forward pointers */
- for(i=0; i<=(int)lvl; i++) {
- x->forward[i]=*update[i];
- *update[i]=x;
- } /* end for */
+ slist->last = x;
+ }
/* Increment the number of nodes in the skip list */
slist->nobjs++;
@@ -474,7 +707,7 @@ done:
PURPOSE
Release all nodes from a skip list, optionally calling a 'free' operator
USAGE
- herr_t H5SL_release_common(slist)
+ herr_t H5SL_release_common(slist,op,opdata)
H5SL_t *slist; IN/OUT: Pointer to skip list to release nodes
H5SL_operator_t op; IN: Callback function to free item & key
void *op_data; IN/OUT: Pointer to application data for callback
@@ -496,9 +729,9 @@ herr_t
H5SL_release_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
{
H5SL_node_t *node, *next_node; /* Pointers to skip list nodes */
- size_t u; /* Local index variable */
+ herr_t ret_value = SUCCEED;
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_release_common);
+ FUNC_ENTER_NOAPI_NOINIT(H5SL_release_common);
/* Check args */
assert(slist);
@@ -516,13 +749,18 @@ H5SL_release_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
/* Casting away const OK -QAK */
(void)(op)(node->item,(void *)node->key,op_data);
- H5FL_ARR_FREE(H5SL_node_ptr_t,node);
+ (void)H5FL_FAC_FREE(H5SL_fac_g[node->log_nalloc], node->forward);
+ (void)H5FL_FREE(H5SL_node_t, node);
node=next_node;
} /* end while */
/* Reset the header pointers */
- for(u=0; u<slist->max_level; u++)
- slist->header->forward[u]=NULL;
+ (void)H5FL_FAC_FREE(H5SL_fac_g[slist->header->log_nalloc], slist->header->forward);
+ if(NULL == (slist->header->forward = (H5SL_node_t **) H5FL_FAC_MALLOC(H5SL_fac_g[0])))
+ HGOTO_ERROR(H5E_SLIST, H5E_NOSPACE, FAIL, "memory allocation failed")
+ slist->header->forward[0] = NULL;
+ slist->header->log_nalloc = 0;
+ slist->header->level = 0;
/* Reset the last pointer */
slist->last=slist->header;
@@ -531,7 +769,8 @@ H5SL_release_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
slist->curr_level=-1;
slist->nobjs=0;
- FUNC_LEAVE_NOAPI(SUCCEED);
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
} /* end H5SL_release_common() */
@@ -561,7 +800,9 @@ H5SL_release_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
herr_t
H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
{
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_close_common)
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_NOAPI_NOINIT(H5SL_close_common)
/* Check args */
HDassert(slist);
@@ -570,15 +811,18 @@ H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
/* (Pre-condition) */
/* Free skip list nodes */
- (void)H5SL_release_common(slist, op, op_data); /* always succeeds */
+ if(H5SL_release_common(slist, op, op_data) < 0)
+ HGOTO_ERROR(H5E_SLIST, H5E_CANTFREE, FAIL, "can't release skip list nodes")
/* Release header node */
- H5FL_ARR_FREE(H5SL_node_ptr_t, slist->header);
+ (void)H5FL_FAC_FREE(H5SL_fac_g[slist->header->log_nalloc], slist->header->forward);
+ (void)H5FL_FREE(H5SL_node_t, slist->header);
/* Free skip list object */
(void)H5FL_FREE(H5SL_t, slist);
- FUNC_LEAVE_NOAPI(SUCCEED)
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SL_close_common() */
@@ -588,7 +832,7 @@ H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
PURPOSE
Create a skip list
USAGE
- H5SL_t *H5SL_create(void)
+ H5SL_t *H5SL_create(H5SL_type_t type)
RETURNS
Returns a pointer to a skip list on success, NULL on failure.
@@ -600,18 +844,15 @@ H5SL_close_common(H5SL_t *slist, H5SL_operator_t op, void *op_data)
REVISION LOG
--------------------------------------------------------------------------*/
H5SL_t *
-H5SL_create(H5SL_type_t type, double p, size_t max_level)
+H5SL_create(H5SL_type_t type)
{
H5SL_t *new_slist = NULL; /* Pointer to new skip list object created */
H5SL_node_t *header; /* Pointer to skip list header node */
- size_t u; /* Local index variable */
H5SL_t *ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5SL_create,NULL);
/* Check args */
- HDassert(p>0.0 && p<1.0);
- HDassert(max_level>0 && max_level<=H5SL_LEVEL_MAX);
HDassert(type>=H5SL_TYPE_INT && type<=H5SL_TYPE_OBJ);
/* Allocate skip list structure */
@@ -620,21 +861,17 @@ H5SL_create(H5SL_type_t type, double p, size_t max_level)
/* Set the static internal fields */
new_slist->type = type;
- new_slist->p = p;
- new_slist->p1 = (int)(p*RAND_MAX);
- new_slist->max_level = max_level;
/* Set the dynamic internal fields */
new_slist->curr_level = -1;
new_slist->nobjs = 0;
/* Allocate the header node */
- if(NULL == (header = H5SL_new_node((max_level - 1), NULL, NULL, ULONG_MAX)))
+ if(NULL == (header = H5SL_new_node(NULL, NULL, ULONG_MAX)))
HGOTO_ERROR(H5E_SLIST ,H5E_NOSPACE, NULL, "can't create new skip list node")
- /* Initialize header node's forward pointers */
- for(u = 0; u < max_level; u++)
- header->forward[u] = NULL;
+ /* Initialize header node's forward pointer */
+ header->forward[0] = NULL;
/* Initialize header node's backward pointer */
header->backward = NULL;
@@ -803,12 +1040,11 @@ done:
void *
H5SL_remove(H5SL_t *slist, const void *key)
{
- H5SL_node_t **update[H5SL_LEVEL_MAX]; /* 'update' vector */
H5SL_node_t *x; /* Current node to examine */
uint32_t hashval = 0; /* Hash value for key */
void *ret_value = NULL; /* Return value */
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_remove)
+ FUNC_ENTER_NOAPI_NOINIT(H5SL_remove)
/* Check args */
HDassert(slist);
@@ -825,31 +1061,31 @@ H5SL_remove(H5SL_t *slist, const void *key)
x = slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_REMOVE(SCALAR, slist, x, update, const int, key, -)
+ H5SL_REMOVE(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_REMOVE(SCALAR, slist, x, update, const haddr_t, key, -)
+ H5SL_REMOVE(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_REMOVE(STRING, slist, x, update, char *, key, hashval)
+ H5SL_REMOVE(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_REMOVE(SCALAR, slist, x, update, const hsize_t, key, -)
+ H5SL_REMOVE(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_REMOVE(SCALAR, slist, x, update, const unsigned, key, -)
+ H5SL_REMOVE(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_REMOVE(SCALAR, slist, x, update, const size_t, key, -)
+ H5SL_REMOVE(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_REMOVE(OBJ, slist, x, update, const H5_obj_t, key, -)
+ H5SL_REMOVE(OBJ, slist, x, const H5_obj_t, key, -)
break;
default:
@@ -876,8 +1112,6 @@ done:
Remove first element from a skip list.
GLOBAL VARIABLES
COMMENTS, BUGS, ASSUMPTIONS
- This algorithm is basically the same as the one in the
- H5SL_LOCATE_REMOVE_FOUND macro, fix bugs in both places
EXAMPLES
REVISION LOG
--------------------------------------------------------------------------*/
@@ -885,8 +1119,13 @@ void *
H5SL_remove_first(H5SL_t *slist)
{
void *ret_value = NULL; /* Return value */
+ H5SL_node_t *head = slist->header; /* Skip list header */
+ H5SL_node_t *tmp = slist->header->forward[0]; /* Temporary node pointer */
+ H5SL_node_t *next; /* Next node to search for */
+ size_t level = slist->curr_level; /* Skip list level */
+ size_t i; /* Index */
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_remove_first)
+ FUNC_ENTER_NOAPI_NOINIT(H5SL_remove_first)
/* Check args */
HDassert(slist);
@@ -898,39 +1137,62 @@ H5SL_remove_first(H5SL_t *slist)
/* Check for empty list */
if(slist->last != slist->header) {
- H5SL_node_t *x; /* Current node to examine */
- int i; /* Local index value */
- /* Get pointer to first node on the list */
- x = slist->header->forward[0];
-
- /* Patch forward pointers in list header around node to remove */
- for(i = 0; i <= (int)slist->curr_level; i++) {
- if(slist->header->forward[i] != x)
- break;
- slist->header->forward[i] = x->forward[i];
- } /* end for */
+ /* Assign return value */
+ ret_value = tmp->item;
+ HDassert(level == head->level);
+ HDassert(0 == tmp->level);
- /* Update tail/backward pointer */
- if(slist->last == x)
- slist->last = x->backward;
+ /* Remove the first node */
+ head->forward[0] = tmp->forward[0];
+ if(slist->last == tmp)
+ slist->last = head;
else
- x->forward[0]->backward = x->backward;
-
- /* Get the item to return */
- ret_value = x->item;
-
- /* Free the skip list node */
- H5FL_ARR_FREE(H5SL_node_ptr_t, x);
-
- /* Lower the level of the list, if we removed the tallest node */
- while(slist->curr_level > 0 && slist->header->forward[slist->curr_level] == NULL)
- slist->curr_level--;
-
- /* Decrement the # of objects in the list */
+ tmp->forward[0]->backward = head;
slist->nobjs--;
+ /* Free memory */
+ (void)H5FL_FAC_FREE(H5SL_fac_g[0], tmp->forward);
+ (void)H5FL_FREE(H5SL_node_t, tmp);
+
+ /* Reshape the skip list as necessary to maintain 1-2-3 condition */
+ for(i=0; i < level; i++) {
+ next = head->forward[i+1];
+ HDassert(next);
+
+ /* Check if head->forward[i] == head->forward[i+1] (illegal) */
+ if(head->forward[i] == next) {
+ tmp = next;
+ next = next->forward[i+1];
+
+ HDassert(tmp->level == i+1);
+
+ /* Demote head->forward[i] */
+ H5SL_DEMOTE(tmp, head)
+
+ /* Check if we need to promote the following node to maintain
+ * 1-2-3 condition */
+ if(tmp->forward[i]->forward[i] != next) {
+ HDassert(tmp->forward[i]->forward[i]->forward[i] == next ||
+ tmp->forward[i]->forward[i]->forward[i]->forward[i] == next);
+ tmp = tmp->forward[i];
+ H5SL_PROMOTE(slist, tmp, head);
+ /* In this case, since there is a node of height = i+1 here
+ * now (tmp), we know the skip list must be valid and can
+ * break */
+ break;
+ } else if(!head->forward[i+1]) {
+ /* We just shrunk the largest node, shrink the header */
+ HDassert(i == level - 1);
+
+ H5SL_SHRINK(head, level)
+ slist->curr_level--;
+ } /* end else */
+ } else
+ break;
+ } /* end for */
} /* end if */
+done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SL_remove_first() */
@@ -978,31 +1240,31 @@ H5SL_search(H5SL_t *slist, const void *key)
x=slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_SEARCH(SCALAR, slist, x, -, const int, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_SEARCH(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_SEARCH(STRING, slist, x, -, char *, key, hashval)
+ H5SL_SEARCH(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_SEARCH(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_SEARCH(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_SEARCH(OBJ, slist, x, const H5_obj_t, key, -)
break;
default:
@@ -1063,31 +1325,31 @@ H5SL_less(H5SL_t *slist, const void *key)
x=slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_SEARCH(SCALAR, slist, x, -, const int, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_SEARCH(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_SEARCH(STRING, slist, x, -, char *, key, hashval)
+ H5SL_SEARCH(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_SEARCH(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_SEARCH(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_SEARCH(OBJ, slist, x, const H5_obj_t, key, -)
break;
default:
@@ -1161,31 +1423,31 @@ H5SL_greater(H5SL_t *slist, const void *key)
x = slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_SEARCH(SCALAR, slist, x, -, const int, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_SEARCH(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_SEARCH(STRING, slist, x, -, char *, key, hashval)
+ H5SL_SEARCH(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_SEARCH(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_SEARCH(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_SEARCH(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_SEARCH(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_SEARCH(OBJ, slist, x, const H5_obj_t, key, -)
break;
default:
@@ -1249,31 +1511,31 @@ H5SL_find(H5SL_t *slist, const void *key)
x=slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_FIND(SCALAR, slist, x, -, const int, key, -)
+ H5SL_FIND(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_FIND(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_FIND(STRING, slist, x, -, char *, key, hashval)
+ H5SL_FIND(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_FIND(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_FIND(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_FIND(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_FIND(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_FIND(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_FIND(OBJ, slist, x, const H5_obj_t, key, -)
break;
default:
@@ -1334,31 +1596,31 @@ H5SL_below(H5SL_t *slist, const void *key)
x = slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_FIND(SCALAR, slist, x, -, const int, key, -)
+ H5SL_FIND(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_FIND(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_FIND(STRING, slist, x, -, char *, key, hashval)
+ H5SL_FIND(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_FIND(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_FIND(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_FIND(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_FIND(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_FIND(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_FIND(OBJ, slist, x, const H5_obj_t, key, -)
break;
} /* end switch */
@@ -1429,31 +1691,31 @@ H5SL_above(H5SL_t *slist, const void *key)
x = slist->header;
switch(slist->type) {
case H5SL_TYPE_INT:
- H5SL_FIND(SCALAR, slist, x, -, const int, key, -)
+ H5SL_FIND(SCALAR, slist, x, const int, key, -)
break;
case H5SL_TYPE_HADDR:
- H5SL_FIND(SCALAR, slist, x, -, const haddr_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const haddr_t, key, -)
break;
case H5SL_TYPE_STR:
- H5SL_FIND(STRING, slist, x, -, char *, key, hashval)
+ H5SL_FIND(STRING, slist, x, char *, key, hashval)
break;
case H5SL_TYPE_HSIZE:
- H5SL_FIND(SCALAR, slist, x, -, const hsize_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const hsize_t, key, -)
break;
case H5SL_TYPE_UNSIGNED:
- H5SL_FIND(SCALAR, slist, x, -, const unsigned, key, -)
+ H5SL_FIND(SCALAR, slist, x, const unsigned, key, -)
break;
case H5SL_TYPE_SIZE:
- H5SL_FIND(SCALAR, slist, x, -, const size_t, key, -)
+ H5SL_FIND(SCALAR, slist, x, const size_t, key, -)
break;
case H5SL_TYPE_OBJ:
- H5SL_FIND(OBJ, slist, x, -, const H5_obj_t, key, -)
+ H5SL_FIND(OBJ, slist, x, const H5_obj_t, key, -)
break;
} /* end switch */
@@ -1868,3 +2130,50 @@ H5SL_close(H5SL_t *slist)
FUNC_LEAVE_NOAPI(SUCCEED);
} /* end H5SL_close() */
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5SL_term_interface
+ PURPOSE
+ Terminate all the H5FL factories used in this package, and clear memory
+ USAGE
+ int H5SL_term_interface()
+ RETURNS
+ Success: Positive if any action might have caused a change in some
+ other interface; zero otherwise.
+ Failure: Negative
+ DESCRIPTION
+ Release any resources allocated.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ Can't report errors...
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+int H5SL_term_interface(void)
+{
+ size_t i;
+ herr_t ret;
+ int n = H5_interface_initialize_g ? 1 : 0;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SL_term_interface)
+
+ if(n) {
+ /* Terminate all the factories */
+ for(i=0; i<H5SL_fac_nused_g; i++) {
+ ret = H5FL_fac_term(H5SL_fac_g[i]);
+ HDassert(ret >= 0);
+ }
+ H5SL_fac_nused_g = 0;
+
+ /* Free the list of factories */
+ H5SL_fac_g = (H5FL_reg_head_t **)H5MM_xfree((void *)H5SL_fac_g);
+ H5SL_fac_nalloc_g = 0;
+
+ /* Mark the interface as uninitialized */
+ H5_interface_initialize_g = 0;
+ } /* end if */
+
+ FUNC_LEAVE_NOAPI(n);
+} /* H5SL_term_interface() */
+
generated by cgit v0.12 at 2024-11-27 16:22:03 (GMT)