src/Makefile: Don't unnecessarily set plugin specific CXXFLAGS.

[collectd.git] / src / utils_vl_lookup.c

diff --git a/src/utils_vl_lookup.c b/src/utils_vl_lookup.c
index 01d33ff..a023784 100644 (file)
--- a/src/utils_vl_lookup.c
+++ b/src/utils_vl_lookup.c
@@ -26,12 +26,17 @@
 
 #include "collectd.h"
 
+#include <pthread.h>
 #include <regex.h>
 
 #include "common.h"
 #include "utils_vl_lookup.h"
 #include "utils_avltree.h"
 
+#if HAVE_LIBKSTAT
+kstat_ctl_t *kc;
+#endif /* HAVE_LIBKSTAT */
+
 #if BUILD_TEST
 # define sstrncpy strncpy
 # define plugin_log(s, ...) do { \
@@ -86,6 +91,7 @@ struct user_obj_s
 
 struct user_class_s
 {
+  pthread_mutex_t lock;
   void *user_class;
   identifier_match_t match;
   user_obj_t *user_obj_list; /* list of user_obj */
@@ -151,7 +157,7 @@ static int lu_copy_ident_to_match_part (part_match_t *match_part, /* {{{ */
   assert (sizeof (match_part->str) > len);
   /* strip trailing slash */
   match_part->str[len - 2] = 0;
-  
+
   status = regcomp (&match_part->regex, match_part->str,
       /* flags = */ REG_EXTENDED);
   if (status != 0)
@@ -163,7 +169,7 @@ static int lu_copy_ident_to_match_part (part_match_t *match_part, /* {{{ */
     return (EINVAL);
   }
   match_part->is_regex = 1;
-  
+
   return (0);
 } /* }}} int lu_copy_ident_to_match_part */
 
@@ -191,19 +197,19 @@ static int lu_copy_ident_to_match (identifier_match_t *match, /* {{{ */
   return (0);
 } /* }}} int lu_copy_ident_to_match */
 
+/* user_class->lock must be held when calling this function */
 static void *lu_create_user_obj (lookup_t *obj, /* {{{ */
     data_set_t const *ds, value_list_t const *vl,
     user_class_t *user_class)
 {
   user_obj_t *user_obj;
 
-  user_obj = malloc (sizeof (*user_obj));
+  user_obj = calloc (1, sizeof (*user_obj));
   if (user_obj == NULL)
   {
-    ERROR ("utils_vl_lookup: malloc failed.");
+    ERROR ("utils_vl_lookup: calloc failed.");
     return (NULL);
   }
-  memset (user_obj, 0, sizeof (*user_obj));
   user_obj->next = NULL;
 
   user_obj->user_obj = obj->cb_user_class (ds, vl, user_class->user_class);
@@ -245,6 +251,7 @@ static void *lu_create_user_obj (lookup_t *obj, /* {{{ */
   return (user_obj);
 } /* }}} void *lu_create_user_obj */
 
+/* user_class->lock must be held when calling this function */
 static user_obj_t *lu_find_user_obj (user_class_t *user_class, /* {{{ */
     value_list_t const *vl)
 {
@@ -294,14 +301,18 @@ static int lu_handle_user_class (lookup_t *obj, /* {{{ */
       || !lu_part_matches (&user_class->match.host, vl->host))
     return (1);
 
+  pthread_mutex_lock (&user_class->lock);
   user_obj = lu_find_user_obj (user_class, vl);
   if (user_obj == NULL)
   {
     /* call lookup_class_callback_t() and insert into the list of user objects. */
     user_obj = lu_create_user_obj (obj, ds, vl, user_class);
-    if (user_obj == NULL)
+    if (user_obj == NULL) {
+      pthread_mutex_unlock (&user_class->lock);
       return (-1);
+    }
   }
+  pthread_mutex_unlock (&user_class->lock);
 
   status = obj->cb_user_obj (ds, vl,
       user_class->user_class, user_obj->user_obj);
@@ -325,7 +336,7 @@ static int lu_handle_user_class_list (lookup_t *obj, /* {{{ */
 {
   user_class_list_t *ptr;
   int retval = 0;
-  
+
   for (ptr = user_class_list; ptr != NULL; ptr = ptr->next)
   {
     int status;
@@ -361,16 +372,15 @@ static by_type_entry_t *lu_search_by_type (lookup_t *obj, /* {{{ */
     return (NULL);
   }
 
-  by_type = malloc (sizeof (*by_type));
+  by_type = calloc (1, sizeof (*by_type));
   if (by_type == NULL)
   {
-    ERROR ("utils_vl_lookup: malloc failed.");
+    ERROR ("utils_vl_lookup: calloc failed.");
     sfree (type_copy);
     return (NULL);
   }
-  memset (by_type, 0, sizeof (*by_type));
   by_type->wildcard_plugin_list = NULL;
-  
+
   by_type->by_plugin_tree = c_avl_create ((void *) strcmp);
   if (by_type->by_plugin_tree == NULL)
   {
@@ -391,7 +401,7 @@ static by_type_entry_t *lu_search_by_type (lookup_t *obj, /* {{{ */
     sfree (type_copy);
     return (NULL);
   }
-  
+
   return (by_type);
 } /* }}} by_type_entry_t *lu_search_by_type */
 
@@ -402,7 +412,7 @@ static int lu_add_by_plugin (by_type_entry_t *by_type, /* {{{ */
   identifier_match_t const *match = &user_class_list->entry.match;
 
   /* Lookup user_class_list from the per-plugin structure. If this is the first
-   * user_class to be added, the blocks return immediately. Otherwise they will
+   * user_class to be added, the block returns immediately. Otherwise they will
    * set "ptr" to non-NULL. */
   if (match->plugin.is_regex)
   {
@@ -487,6 +497,7 @@ static void lu_destroy_user_class_list (lookup_t *obj, /* {{{ */
 
     lu_destroy_user_obj (obj, user_class_list->entry.user_obj_list);
     user_class_list->entry.user_obj_list = NULL;
+    pthread_mutex_destroy (&user_class_list->entry.lock);
 
     sfree (user_class_list);
     user_class_list = next;
@@ -496,7 +507,7 @@ static void lu_destroy_user_class_list (lookup_t *obj, /* {{{ */
 static void lu_destroy_by_type (lookup_t *obj, /* {{{ */
     by_type_entry_t *by_type)
 {
-  
+
   while (42)
   {
     char *plugin = NULL;
@@ -531,13 +542,12 @@ lookup_t *lookup_create (lookup_class_callback_t cb_user_class, /* {{{ */
     lookup_free_class_callback_t cb_free_class,
     lookup_free_obj_callback_t cb_free_obj)
 {
-  lookup_t *obj = malloc (sizeof (*obj));
+  lookup_t *obj = calloc (1, sizeof (*obj));
   if (obj == NULL)
   {
-    ERROR ("utils_vl_lookup: malloc failed.");
+    ERROR ("utils_vl_lookup: calloc failed.");
     return (NULL);
   }
-  memset (obj, 0, sizeof (*obj));
 
   obj->by_type_tree = c_avl_create ((void *) strcmp);
   if (obj->by_type_tree == NULL)
@@ -592,13 +602,13 @@ int lookup_add (lookup_t *obj, /* {{{ */
   if (by_type == NULL)
     return (-1);
 
-  user_class_obj = malloc (sizeof (*user_class_obj));
+  user_class_obj = calloc (1, sizeof (*user_class_obj));
   if (user_class_obj == NULL)
   {
-    ERROR ("utils_vl_lookup: malloc failed.");
+    ERROR ("utils_vl_lookup: calloc failed.");
     return (ENOMEM);
   }
-  memset (user_class_obj, 0, sizeof (*user_class_obj));
+  pthread_mutex_init (&user_class_obj->entry.lock, /* attr = */ NULL);
   user_class_obj->entry.user_class = user_class;
   lu_copy_ident_to_match (&user_class_obj->entry.match, ident, group_by);
   user_class_obj->entry.user_obj_list = NULL;
@@ -641,6 +651,6 @@ int lookup_search (lookup_t *obj, /* {{{ */
       return (status);
     retval += status;
   }
-    
+
   return (retval);
 } /* }}} lookup_search */