add function: iniGetPercentValueEx

HISTORY

@@ -1,5 +1,5 @@
 
-Version 1.44  2020-10-28
+Version 1.44  2020-10-31
   * add test file src/tests/test_pthread_lock.c
   * add uniq_skiplist.[hc]
   * add function split_string_ex

src/ini_file_reader.c

@@ -3268,3 +3268,41 @@ char *iniGetRequiredStrValueEx(const char *szSectionName, const char *szItemName
     return value;
 }
 
+int iniGetPercentValueEx(IniFullContext *ini_ctx,
+        const char *item_name, double *item_value,
+        const double default_value, const bool retry_global)
+{
+    char *value;
+    char *last;
+
+    value = iniGetStrValueEx(ini_ctx->section_name, item_name,
+            ini_ctx->context, retry_global);
+    if (value == NULL || *value == '\0') {
+        *item_value = default_value;
+    } else {
+        double d;
+        char *endptr;
+
+        last = value + strlen(value) - 1;
+        if (*last != '%') {
+            logError("file: "__FILE__", line: %d, "
+                    "config file: %s, item: %s, value: %s "
+                    "is NOT a valid ratio, expect end char: %%",
+                    __LINE__, ini_ctx->filename, item_name, value);
+            return EINVAL;
+        }
+
+        d = strtod(value, &endptr);
+        if ((endptr != last) || (d <= 0.00001 || d >= 100.00001)) {
+            logError("file: "__FILE__", line: %d, "
+                    "config file: %s, item: %s, "
+                    "value: %s is NOT a valid ratio",
+                    __LINE__, ini_ctx->filename, item_name, value);
+            return EINVAL;
+        }
+
+        *item_value = d / 100.00;
+    }
+
+    return 0;
+}

src/ini_file_reader.h

@@ -133,6 +133,8 @@ extern "C" {
     iniGetBoolValueEx(szSectionName, szItemName, pContext, \
     bDefaultValue, false)
 
+#define iniGetPercentValue(ini_ctx, item_name, item_value, default_value) \
+    iniGetPercentValueEx(ini_ctx, item_name, item_value, default_value, false)
 
 int iniSetAnnotationCallBack(AnnotationEntry *annotations, int count);
 void iniDestroyAnnotationCallBack();
@@ -284,6 +286,20 @@ double iniGetDoubleValueEx(const char *szSectionName,
         const char *szItemName, IniContext *pContext,
         const double dbDefaultValue, const bool bRetryGlobal);
 
+
+/** get item percent double value
+ *  parameters:
+ *           ini_ctx: the full context
+ *           item_name: the item name
+ *           item_value: store the item value
+ *           default_value: the default value
+ *           retry_global: if fetch from global section when the item not exist
+ *  return: error no, 0 for success, != 0 for fail
+*/
+int iniGetPercentValueEx(IniFullContext *ini_ctx,
+        const char *item_name, double *item_value,
+        const double default_value, const bool retry_global);
+
 /** print all items
  *  parameters:
  *           pContext:   the ini context

src/uniq_skiplist.c

@@ -454,25 +454,16 @@ static UniqSkiplistNode *uniq_skiplist_get_first_larger(
     return (UniqSkiplistNode *)previous->links[0];
 }
 
-int uniq_skiplist_delete_ex(UniqSkiplist *sl, void *data,
+void uniq_skiplist_delete_node_ex(UniqSkiplist *sl,
+        UniqSkiplistNode *previous, UniqSkiplistNode *deleted,
         const bool need_free)
 {
     int i;
-    int level_index;
-    volatile UniqSkiplistNode *previous;
-    volatile UniqSkiplistNode *deleted;
-
-    previous = uniq_skiplist_get_equal_previous(sl, data, &level_index);
-    if (previous == NULL) {
-        return ENOENT;
-    }
-
-    deleted = previous->links[level_index];
-    for (i=level_index; i>=0; i--) {
+    for (i=deleted->level_index; i>=0; i--) {
         while (previous->links[i] != sl->factory->tail &&
                 previous->links[i] != deleted)
         {
-            previous = previous->links[i];
+            previous = (UniqSkiplistNode *)previous->links[i];
         }
 
         previous->links[i] = previous->links[i]->links[i];
@@ -493,8 +484,24 @@ int uniq_skiplist_delete_ex(UniqSkiplist *sl, void *data,
                 sl->factory->delay_free_seconds);
     }
 
-    UNIQ_SKIPLIST_FREE_MBLOCK_OBJECT(sl, level_index, deleted);
+    UNIQ_SKIPLIST_FREE_MBLOCK_OBJECT(sl, deleted->level_index, deleted);
     sl->element_count--;
+}
+
+int uniq_skiplist_delete_ex(UniqSkiplist *sl, void *data,
+        const bool need_free)
+{
+    int level_index;
+    UniqSkiplistNode *previous;
+    UniqSkiplistNode *deleted;
+
+    previous = uniq_skiplist_get_equal_previous(sl, data, &level_index);
+    if (previous == NULL) {
+        return ENOENT;
+    }
+
+    deleted = (UniqSkiplistNode *)previous->links[level_index];
+    uniq_skiplist_delete_node_ex(sl, previous, deleted, need_free);
     return 0;
 }
 
@@ -524,6 +531,16 @@ int uniq_skiplist_replace_ex(UniqSkiplist *sl, void *data,
     return 0;
 }
 
+UniqSkiplistNode *uniq_skiplist_find_node(UniqSkiplist *sl, void *data)
+{
+    int level_index;
+    UniqSkiplistNode *previous;
+
+    previous = uniq_skiplist_get_equal_previous(sl, data, &level_index);
+    return (previous != NULL) ? (UniqSkiplistNode *)
+        previous->links[level_index] : NULL;
+}
+
 void *uniq_skiplist_find(UniqSkiplist *sl, void *data)
 {
     int level_index;

src/uniq_skiplist.h

@@ -80,6 +80,9 @@ extern "C" {
 #define uniq_skiplist_delete(sl, data)  \
     uniq_skiplist_delete_ex(sl, data, true)
 
+#define uniq_skiplist_delete_node(sl, previous, node)  \
+    uniq_skiplist_delete_node_ex(sl, previous, node, true)
+
 #define uniq_skiplist_replace(sl, data) \
     uniq_skiplist_replace_ex(sl, data, true)
 
@@ -108,6 +111,11 @@ int uniq_skiplist_find_all(UniqSkiplist *sl, void *data,
 int uniq_skiplist_find_range(UniqSkiplist *sl, void *start_data,
         void *end_data, UniqSkiplistIterator *iterator);
 
+UniqSkiplistNode *uniq_skiplist_find_node(UniqSkiplist *sl, void *data);
+void uniq_skiplist_delete_node_ex(UniqSkiplist *sl,
+        UniqSkiplistNode *previous, UniqSkiplistNode *deleted,
+        const bool need_free);
+
 UniqSkiplistNode *uniq_skiplist_find_ge_node(UniqSkiplist *sl, void *data);
 
 static inline void *uniq_skiplist_find_ge(UniqSkiplist *sl, void *data)