From 1d354fd87d4c07906e82d104ba8614d30ae9cbbe Mon Sep 17 00:00:00 2001
From: reinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>
Date: Thu, 17 Jun 2004 06:23:43 +0000
Subject: [lcd4linux @ 2004-06-17 06:23:39 by reinelt] hash handling rewritten
 to solve performance issues

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@473 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
---
 drv_T6963.c           |   7 +-
 hash.c                | 441 ++++++++++++++++++++++++++++++++------------------
 hash.h                |  61 ++++---
 lcd4linux.conf.sample |  16 +-
 plugin_apm.c          |  21 ++-
 plugin_cpuinfo.c      |  41 ++---
 plugin_diskstats.c    |  84 +++++-----
 plugin_dvb.c          |  47 +++---
 plugin_exec.c         |  17 +-
 plugin_i2c_sensors.c  |  23 ++-
 plugin_imon.c         |  49 +++---
 plugin_isdn.c         |  37 +++--
 plugin_meminfo.c      |  15 +-
 plugin_netdev.c       |  23 ++-
 plugin_ppp.c          |  19 ++-
 plugin_proc_stat.c    |  49 +++---
 plugin_seti.c         |  15 +-
 plugin_wireless.c     |  54 ++++---
 plugin_xmms.c         |  17 +-
 19 files changed, 633 insertions(+), 403 deletions(-)

diff --git a/drv_T6963.c b/drv_T6963.c
index b010d45..870d274 100644
--- a/drv_T6963.c
+++ b/drv_T6963.c
@@ -1,4 +1,4 @@
-/* $Id: drv_T6963.c,v 1.8 2004/06/09 06:40:29 reinelt Exp $
+/* $Id: drv_T6963.c,v 1.9 2004/06/17 06:23:39 reinelt Exp $
  *
  * new style driver for T6963-based displays
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: drv_T6963.c,v $
+ * Revision 1.9  2004/06/17 06:23:39  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.8  2004/06/09 06:40:29  reinelt
  *
  * splash screen for T6963 driver
@@ -80,6 +84,7 @@
 
 #include "debug.h"
 #include "cfg.h"
+#include "qprintf.h"
 #include "udelay.h"
 #include "plugin.h"
 #include "widget.h"
diff --git a/hash.c b/hash.c
index f66d6e1..bd3f73c 100644
--- a/hash.c
+++ b/hash.c
@@ -1,4 +1,4 @@
-/* $Id: hash.c,v 1.20 2004/06/13 01:12:52 reinelt Exp $
+/* $Id: hash.c,v 1.21 2004/06/17 06:23:43 reinelt Exp $
  *
  * hashes (associative arrays)
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: hash.c,v $
+ * Revision 1.21  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.20  2004/06/13 01:12:52  reinelt
  *
  * debug widgets changed (thanks to Andy Baxter)
@@ -114,15 +118,18 @@
 /* 
  * exported functions:
  *
- * void hash_set (HASH *Hash, char *key, char *val);
+ * void hash_create (HASH *Hash);
+ *   initializes hash
+ *
+ * int hash_age (HASH *Hash, char *key, char **value);
+ *   return time of last hash_put
+ *
+ * void hash_put (HASH *Hash, char *key, char *val);
  *   set an entry in the hash
  *
- * void hash_set_delta (HASH *Hash, char *key, char *val);
+ * void hash_put_delta (HASH *Hash, char *key, char *val);
  *   set a delta entry in the hash
  *
- * int hash_age (HASH *Hash, char *key, char **value);
- *   return time of last hash_set
- *
  * char *hash_get (HASH *Hash, char *key);
  *   fetch an entry from the hash
  *
@@ -159,55 +166,125 @@
 #define CHUNK_SIZE 16
 
 
-// bsearch compare function for hash entries
-static int hash_lookup_f (const void *a, const void *b)
+// initialize a new hash table
+void hash_create (HASH *Hash)
 {
-  char *key=(char*)a;
-  HASH_ITEM *item=(HASH_ITEM*)b;
+  Hash->sorted = 0;
 
-  return strcmp(key, item->key);
+  Hash->timestamp.tv_sec  = 0;
+  Hash->timestamp.tv_usec = 0;
+  
+  Hash->nItems = 0;
+  Hash->Items  = NULL;
+
+  Hash->nColumns = 0;
+  Hash->Columns  = NULL;
+
+  Hash->delimiter = strdup (" \t\n");
+}
+
+
+// bsearch compare function for hash items
+static int hash_lookup_item (const void *a, const void *b)
+{
+  char *key = (char*)a;
+  HASH_ITEM *item = (HASH_ITEM*)b;
+
+  return strcasecmp(key, item->key);
 }
 
 
-// qsort compare function for hash tables
-static int hash_sort_f (const void *a, const void *b)
+// qsort compare function for hash items
+static int hash_sort_item (const void *a, const void *b)
 {
-  HASH_ITEM *ha=(HASH_ITEM*)a;
-  HASH_ITEM *hb=(HASH_ITEM*)b;
+  HASH_ITEM *ha = (HASH_ITEM*)a;
+  HASH_ITEM *hb = (HASH_ITEM*)b;
 
   return strcasecmp(ha->key, hb->key);
 }
 
 
+// bsearch compare function for hash headers
+static int hash_lookup_column (const void *a, const void *b)
+{
+  char *key = (char*)a;
+  HASH_COLUMN *column = (HASH_COLUMN*)b;
+
+  return strcasecmp(key, column->key);
+}
+
+
+// qsort compare function for hash headers
+static int hash_sort_column (const void *a, const void *b)
+{
+  HASH_COLUMN *ha = (HASH_COLUMN*)a;
+  HASH_COLUMN *hb = (HASH_COLUMN*)b;
+
+  return strcasecmp(ha->key, hb->key);
+}
+
+
+// split a value into columns and 
+// return the nth column in a string
+// WARNING: does return a pointer to a static string!!
+static char* split (const char *val, int column, const char *delimiter)
+{
+  static char buffer[256];
+  int num, len;
+  const char *beg, *end;
+  
+  if (column < 0) return (char*)val;
+  if (val == NULL) return NULL;
+  
+  num = 0;
+  len = 0;
+  beg = val;
+  end = beg;
+  while (beg && *beg) {
+    while (strchr(delimiter, *beg)) beg++;
+    end = strpbrk (beg, delimiter);
+    if (num++ == column) break;
+    beg = end ? end+1 : NULL;
+  }
+  if (beg != NULL) {
+    len = end ? end - beg : strlen(beg);
+    if (len >= sizeof(buffer)) len = sizeof(buffer)-1;
+    strncpy (buffer, beg, len);
+  }
+  
+  buffer[len] = '\0';
+  return buffer;
+}
+
+
 // search an entry in the hash table:
 // If the table is flagged "sorted", the entry is looked
 // up using the bsearch function. If the table is 
 // unsorted, it will be searched in a linear way
-
-static HASH_ITEM* hash_lookup (HASH *Hash, char *key, int sortit)
+static HASH_ITEM* hash_lookup (HASH *Hash, const char *key, int do_sort)
 {
-  HASH_ITEM *Item=NULL;
+  HASH_ITEM *Item = NULL;
   
   // maybe sort the array
-  if (sortit && !Hash->sorted) {
-    qsort(Hash->Items, Hash->nItems, sizeof(HASH_ITEM), hash_sort_f);
-    Hash->sorted=1;
+  if (do_sort && !Hash->sorted) {
+    qsort(Hash->Items, Hash->nItems, sizeof(HASH_ITEM), hash_sort_item);
+    Hash->sorted = 1;
   }
   
   // no key was passed
-  if (key==NULL) return NULL;
+  if (key == NULL) return NULL;
   
   // lookup using bsearch
   if (Hash->sorted) {
-    Item=bsearch(key, Hash->Items, Hash->nItems, sizeof(HASH_ITEM), hash_lookup_f);
+    Item = bsearch(key, Hash->Items, Hash->nItems, sizeof(HASH_ITEM), hash_lookup_item);
   }
   
   // linear search
-  if (Item==NULL) {
+  if (Item == NULL) {
     int i;
-    for (i=0;i<Hash->nItems; i++) {
-      if (strcmp(key, Hash->Items[i].key)==0) {
-	Item=&(Hash->Items[i]);
+    for (i = 0; i < Hash->nItems; i++) {
+      if (strcmp(key, Hash->Items[i].key) == 0) {
+	Item = &(Hash->Items[i]);
 	break;
       }
     }
@@ -218,176 +295,134 @@ static HASH_ITEM* hash_lookup (HASH *Hash, char *key, int sortit)
 }
 
 
-// insert a key/val pair into the hash table
-// If the entry does already exist, it will be overwritten,
-// and the table stays sorted (if it has been before).
-// Otherwise, the entry is appended at the end, and 
-// the table will be flagged 'unsorted' afterwards
-
-static HASH_ITEM* hash_set_string (HASH *Hash, char *key, char *val)
+// return the age in milliseconds of an entry from the hash table
+// or from the hash table itself if key is NULL
+// returns -1 if entry does not exist
+int hash_age (HASH *Hash, const char *key)
 {
   HASH_ITEM *Item;
-  int len = strlen(val);
+  struct timeval now, *timestamp;
   
-  Item = hash_lookup (Hash, key, 0);
-
-  // entry already exists?
-  if (Item != NULL) {
-    if (len > Item->len) {
-      // buffer is either empty or too small
-      if (Item->val) free (Item->val);
-      // allocate memory in multiples of CHUNK_SIZE
-      // note that length does not count the trailing \0
-      Item->len = CHUNK_SIZE*(len/CHUNK_SIZE+1)-1;
-      Item->val = malloc(Item->len+1);
-    }
-    strcpy(Item->val, val);
-    goto hash_got_string;
+  if (key == NULL) {
+    timestamp = &(Hash->timestamp);
+  } else {
+    Item = hash_lookup(Hash, key, 1);
+    if (Item == NULL) return -1;
+    timestamp = &(Item->Slot[Item->index].timestamp);
   }
-
-  // add entry
-  Hash->sorted = 0;
-  Hash->nItems++;
-  Hash->Items = realloc(Hash->Items, Hash->nItems*sizeof(HASH_ITEM));
-
-  Item = &(Hash->Items[Hash->nItems-1]);
   
-  Item->key  = strdup(key);
-
-  Item->len  = CHUNK_SIZE*(len/CHUNK_SIZE+1)-1;
-  Item->val  = malloc(Item->len+1);
-  strcpy(Item->val, val);
+  gettimeofday(&now, NULL);
   
-  Item->root = 0;
-  Item->Slot = NULL;
-
- hash_got_string:
-  // set timestamps
-  gettimeofday(&Hash->time, NULL);
-  Item->time = Hash->time;
-
-  return Item;
+  return (now.tv_sec - timestamp->tv_sec)*1000 + (now.tv_usec - timestamp->tv_usec)/1000;
 }
 
 
-// insert a string into the hash table
-void hash_set (HASH *Hash, char *key, char *val)
+// add an entry to the column header table
+void hash_set_column (HASH *Hash, int number, const char *column)
 {
-  hash_set_string (Hash, key, val);
+  if (Hash == NULL) return;
+  
+  Hash->nColumns++;
+  Hash->Columns = realloc(Hash->Columns, Hash->nColumns * sizeof(HASH_COLUMN));
+  Hash->Columns[Hash->nColumns-1].key = strdup(column);
+  Hash->Columns[Hash->nColumns-1].val = number;
+
+  qsort(Hash->Columns, Hash->nColumns, sizeof(HASH_COLUMN), hash_sort_column);
+    
 }
 
 
-// insert a string into the hash table
-// convert it into a number, and store it in the
-// delta table, too
-void hash_set_delta (HASH *Hash, char *key, char *val)
+// fetch a column number by column header
+static int hash_get_column (HASH *Hash, const char *key)
 {
-  double number=atof(val);
-  HASH_ITEM *Item;
-  
-  Item=hash_set_string (Hash, key, val);
-  
-  // allocate delta table
-  if (Item->Slot==NULL) {
-    Item->root = 0;
-    Item->Slot  = malloc(DELTA_SLOTS*sizeof(HASH_SLOT));
-    memset(Item->Slot, 0, DELTA_SLOTS*sizeof(HASH_SLOT));
-  }
-  
-  // move the pointer to the next free slot, wrap around if necessary
-  if (--Item->root < 0) Item->root = DELTA_SLOTS-1;
+  HASH_COLUMN *Column;
 
-  // set first entry
-  gettimeofday(&(Item->Slot[Item->root].time), NULL);
-  Item->Slot[Item->root].val=number;
+  if (key == NULL || *key == '\0') return -1;
+  
+  Column = bsearch(key, Hash->Columns, Hash->nColumns, sizeof(HASH_COLUMN), hash_lookup_column);
+  if (Column == NULL) return -1;
 
+  return Column->val;
 }
 
 
-// get a string from the hash table
-char *hash_get (HASH *Hash, char *key)
+// set column delimiters
+void hash_set_delimiter (HASH *Hash, const char *delimiter)
 {
-  HASH_ITEM *Item=hash_lookup(Hash, key, 1);
-  return Item?Item->val:NULL;
+  if (Hash->delimiter != NULL) free (Hash->delimiter);
+  Hash->delimiter = strdup(delimiter);
 }
 
 
-// return the age in milliseconds of an entry from the hash table
-// or from the hash table itself if key is NULL
-// returns -1 if entry does not exist
-// if **value is set, return the value, too
-int hash_age (HASH *Hash, char *key, char **value)
+// get a string from the hash table
+char *hash_get (HASH *Hash, const char *key, const char *column)
 {
   HASH_ITEM *Item;
-  timeval now, *stamp;
-  int age;
+  int c;
   
-  if (key!=NULL) {
-    Item=hash_lookup(Hash, key, 1);
-    if (value) *value=Item?Item->val:NULL;
-    if (Item==NULL) {
-      return -1;
-    }
-    stamp=&Item->time;
-  } else {
-    stamp=&Hash->time;
-  }
-  
-  gettimeofday(&now, NULL);
-  
-  age = (now.tv_sec - stamp->tv_sec)*1000 + (now.tv_usec - stamp->tv_usec)/1000;
+  Item = hash_lookup(Hash, key, 1);
+  if (Item == NULL) return NULL;
 
-  return age;
+  c = hash_get_column(Hash, column);
+  return split(Item->Slot[Item->index].value, c, Hash->delimiter);
 }
 
 
 // get a delta value from the delta table
-double hash_get_delta (HASH *Hash, char *key, int delay)
+double hash_get_delta (HASH *Hash, const char *key, const char *column, int delay)
 {
   HASH_ITEM *Item;
-  timeval now, end;
-  int i;
+  HASH_SLOT *Slot1, *Slot2;  
+  int i, c;
+  double v1, v2;
   double dv, dt;
-  HASH_SLOT *pSlot;  
+  struct timeval now, end;
   
   // lookup item
-  Item=hash_lookup(Hash, key, 1);
-  if (Item==NULL) return 0.0;
-  if (Item->Slot==NULL) return 0.0;
+  Item = hash_lookup(Hash, key, 1);
+  if (Item == NULL) return 0.0;
   
+  // this is the "current" Slot
+  Slot1 = &(Item->Slot[Item->index]);
+
+  // fetch column number
+  c = hash_get_column(Hash, column);
+
   // if delay is zero, return absolute value
-  if (delay==0) return Item->Slot[Item->root].val;
+  if (delay == 0) return atof(split(Slot1->value, c, Hash->delimiter));
     
   // prepare timing values
-  now=Item->Slot[Item->root].time;
+  now = Slot1->timestamp;
   end.tv_sec  = now.tv_sec;
-  end.tv_usec = now.tv_usec-1000*delay;
-  if (end.tv_usec<0) {
+  end.tv_usec = now.tv_usec - 1000*delay;
+  while (end.tv_usec < 0) {
     end.tv_sec--;
     end.tv_usec += 1000000;
   }
 
   // search delta slot
-  for (i=1; i<DELTA_SLOTS; i++) {   
-    pSlot = &(Item->Slot[(Item->root+i) % DELTA_SLOTS]);
-    if (pSlot->time.tv_sec==0) break;
-    if (timercmp(&(pSlot->time), &end, <)) break;
-    dt = (now.tv_sec - pSlot->time.tv_sec) + (now.tv_usec - pSlot->time.tv_usec)/1000000.0; 
+  Slot2 = &(Item->Slot[Item->index]);
+  for (i = 1; i < Item->nSlot; i++) {   
+    Slot2 = &(Item->Slot[(Item->index + i) % Item->nSlot]);
+    if (Slot2->timestamp.tv_sec == 0) break;
+    if (timercmp(&(Slot2->timestamp), &end, <)) break;
   }
   
-  
-  // empty slot => use the one before
-  if (pSlot->time.tv_sec==0) {
+  // empty slot => try the one before
+  if (Slot2->timestamp.tv_sec == 0) {
     i--;
-    pSlot = &(Item->Slot[(Item->root+i) % DELTA_SLOTS]);
+    Slot2 = &(Item->Slot[(Item->index + i) % Item->nSlot]);
   }
   
   // not enough slots available...
-  if (i==0) return 0.0;
+  if (i == 0) return 0.0;
 
   // delta value, delta time
-  dv = Item->Slot[Item->root].val - pSlot->val; 
-  dt = (now.tv_sec - pSlot->time.tv_sec) + (now.tv_usec - pSlot->time.tv_usec)/1000000.0; 
+  v1 = atof(split(Slot1->value, c, Hash->delimiter));
+  v2 = atof(split(Slot2->value, c, Hash->delimiter));
+  dv = v1 - v2; 
+  dt = (Slot1->timestamp.tv_sec  - Slot2->timestamp.tv_sec) 
+    +  (Slot1->timestamp.tv_usec - Slot2->timestamp.tv_usec)/1000000.0; 
 
   if (dt > 0.0 && dv >= 0.0) return dv/dt;
   return 0.0;
@@ -397,27 +432,28 @@ double hash_get_delta (HASH *Hash, char *key, int delay)
 // get a delta value from the delta table
 // key may contain regular expressions, and the sum 
 // of all matching entries is returned.
-double hash_get_regex (HASH *Hash, char *key, int delay)
+double hash_get_regex (HASH *Hash, const char *key, const char *column, int delay)
 {
-  double sum=0.0;
+  double sum;
   regex_t preg;
   int i, err;
   
-  err=regcomp(&preg, key, REG_ICASE|REG_NOSUB);
-  if (err!=0) {
+  err = regcomp(&preg, key, REG_ICASE|REG_NOSUB);
+  if (err != 0) {
     char buffer[32];
     regerror(err, &preg, buffer, sizeof(buffer));
     error ("error in regular expression: %s", buffer);
     regfree(&preg);
     return 0.0;
   }
-
+  
   // force the table to be sorted by requesting anything
   hash_lookup(Hash, NULL, 1);
   
-  for (i=0;i<Hash->nItems; i++) {
-    if (regexec(&preg, Hash->Items[i].key, 0, NULL, 0)==0) {
-      sum+=hash_get_delta(Hash, Hash->Items[i].key, delay);
+  sum = 0.0;
+  for (i = 0; i < Hash->nItems; i++) {
+    if (regexec(&preg, Hash->Items[i].key, 0, NULL, 0) == 0) {
+      sum += hash_get_delta(Hash, Hash->Items[i].key, column, delay);
     }
   }
   regfree(&preg);
@@ -425,24 +461,113 @@ double hash_get_regex (HASH *Hash, char *key, int delay)
 }
 
 
+// insert a key/val pair into the hash table
+// If the entry does already exist, it will be overwritten,
+// and the table stays sorted (if it has been before).
+// Otherwise, the entry is appended at the end, and 
+// the table will be flagged 'unsorted' afterwards
+
+static HASH_ITEM* hash_set (HASH *Hash, const char *key, const char *value, int delta)
+{
+  HASH_ITEM *Item;
+  HASH_SLOT *Slot;
+  int size;
+  
+  Item = hash_lookup (Hash, key, 0);
+  
+  if (Item == NULL) {
+    
+    // add entry
+    Hash->sorted = 0;
+    Hash->nItems++;
+    Hash->Items = realloc(Hash->Items, Hash->nItems * sizeof(HASH_ITEM));
+    
+    Item        = &(Hash->Items[Hash->nItems-1]);
+    Item->key   = strdup(key);
+    Item->index = 0;
+    Item->nSlot = delta;
+    Item->Slot  = malloc (Item->nSlot * sizeof(HASH_SLOT));
+    memset(Item->Slot, 0, Item->nSlot * sizeof(HASH_SLOT));
+
+  } else {
+
+    // maybe enlarge delta table
+    if (Item->nSlot < delta) {
+      Item->nSlot = delta;
+      Item->Slot  = realloc (Item->Slot, Item->nSlot * sizeof(HASH_SLOT));
+    }
+
+  }
+  
+  if (Item->nSlot > 1) {
+    // move the pointer to the next free slot, wrap around if necessary
+    if (--Item->index < 0) Item->index = Item->nSlot-1;
+  }
+  
+  // create entry
+  Slot = &(Item->Slot[Item->index]);
+  size = strlen(value) + 1;
+
+  // maybe enlarge value buffer
+  if (size > Slot->size) {
+    // buffer is either empty or too small
+    // allocate memory in multiples of CHUNK_SIZE
+    Slot->size = CHUNK_SIZE * (size / CHUNK_SIZE + 1);
+    Slot->value = realloc(Slot->value, Slot->size);
+  }
+
+  // set value
+  strcpy(Slot->value, value);
+  
+  // set timestamps
+  gettimeofday(&(Hash->timestamp), NULL);
+  Slot->timestamp = Hash->timestamp;
+  
+  return Item;
+}
+
+
+// insert a string into the hash table
+// without delta processing
+void hash_put (HASH *Hash, const char *key, const char *value)
+{
+  hash_set (Hash, key, value, 1);
+}
+
+
+// insert a string into the hash table
+// with delta processing
+void hash_put_delta (HASH *Hash, const char *key, const char *value)
+{
+  hash_set (Hash, key, value, DELTA_SLOTS);
+}
+
+
 void hash_destroy (HASH *Hash)
 {
   int i;
 
   if (Hash->Items) {
     
-    // free all entries
-    for (i=0;i<Hash->nItems; i++) {
+    // free all headers
+    for (i = 0; i < Hash->nColumns; i++) {
+      if (Hash->Columns[i].key) free (Hash->Columns[i].key);
+    }
+
+    // free header table
+    free (Hash->Columns);
+
+    // free all items
+    for (i = 0; i < Hash->nItems; i++) {
       if (Hash->Items[i].key)  free (Hash->Items[i].key);
-      if (Hash->Items[i].val)  free (Hash->Items[i].val);
       if (Hash->Items[i].Slot) free (Hash->Items[i].Slot);
     }
     
-    // free hash table
+    // free items table
     free (Hash->Items);
   }
   
-  Hash->nItems=0;
-  Hash->sorted=0;
-  Hash->Items=NULL;
+  Hash->sorted = 0;
+  Hash->nItems = 0;
+  Hash->Items  = NULL;
 }
diff --git a/hash.h b/hash.h
index 6c3870d..a5b8c0a 100644
--- a/hash.h
+++ b/hash.h
@@ -1,4 +1,4 @@
-/* $Id: hash.h,v 1.13 2004/06/13 01:12:52 reinelt Exp $
+/* $Id: hash.h,v 1.14 2004/06/17 06:23:43 reinelt Exp $
  *
  * hashes (associative arrays)
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: hash.h,v $
+ * Revision 1.14  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.13  2004/06/13 01:12:52  reinelt
  *
  * debug widgets changed (thanks to Andy Baxter)
@@ -87,40 +91,57 @@
 #ifndef _HASH_H_
 #define _HASH_H_
 
-
+// struct timeval
 #include <sys/time.h>
-typedef struct timeval timeval;
+
 
 typedef struct {
-  timeval time;
-  double  val;
+  int   size;
+  char *value;
+  struct timeval timestamp;
 } HASH_SLOT;
 
 
+typedef struct {
+  char *key;
+  int   val;
+} HASH_COLUMN;
+
 typedef struct {
   char      *key;
-  char      *val;
-  int       len; 
-  timeval   time;
-  int       root;
+  int       index;
+  int       nSlot;
   HASH_SLOT *Slot;
 } HASH_ITEM;
 
 
 typedef struct {
-  int       sorted;
-  timeval   time;
-  int       nItems;
-  HASH_ITEM *Items;
+  int         sorted;
+  struct timeval timestamp;
+  int         nItems;
+  HASH_ITEM   *Items;
+  int         nColumns;
+  HASH_COLUMN *Columns;
+  char        *delimiter;
 } HASH;
 
 
-void   hash_set       (HASH *Hash, char *key, char *val);
-void   hash_set_delta (HASH *Hash, char *key, char *val);
-int    hash_age       (HASH *Hash, char *key, char **value);
-char  *hash_get       (HASH *Hash, char *key);
-double hash_get_delta (HASH *Hash, char *key, int delay);
-double hash_get_regex (HASH *Hash, char *key, int delay);
-void   hash_destroy   (HASH *Hash);
+
+void   hash_create        (HASH *Hash);
+
+int    hash_age           (HASH *Hash, const char *key);
+
+void   hash_set_column    (HASH *Hash, int number, const char *column);
+void   hash_set_delimiter (HASH *Hash, const char *delimiter);
+
+char  *hash_get           (HASH *Hash, const char *key, const char *column);
+double hash_get_delta     (HASH *Hash, const char *key, const char *column, int delay);
+double hash_get_regex     (HASH *Hash, const char *key, const char *column, int delay);
+
+void   hash_put           (HASH *Hash, const char *key, const char *value);
+void   hash_put_delta     (HASH *Hash, const char *key, const char *value);
+
+void   hash_destroy       (HASH *Hash);
+
 
 #endif
diff --git a/lcd4linux.conf.sample b/lcd4linux.conf.sample
index 774c451..8028435 100644
--- a/lcd4linux.conf.sample
+++ b/lcd4linux.conf.sample
@@ -230,10 +230,10 @@ Widget Disk {
     class 'Text'
     # disk.[rw]blk return blocks, we assume a blocksize of 512
     # to get the number in kB/s we would do blk*512/1024, which is blk/2 
-    expression (proc_stat::disk('.*', 'rblk', 500)+proc_stat::disk('.*', 'wblk', 500))/2
+    # expression (proc_stat::disk('.*', 'rblk', 500)+proc_stat::disk('.*', 'wblk', 500))/2
     # with kernel 2.6, disk_io disappeared from /proc/stat but moved to /proc/diskstat
     # therefore you have to use another function called 'diskstats':
-    #expression diskstats('.*', '.*_sectors', 500)
+    expression diskstats('.*', 'read_sectors', 500) + diskstats('.*', 'write_sectors', 500)
     prefix 'disk'
     postfix ' '
     width 10	
@@ -244,11 +244,11 @@ Widget Disk {
 
 Widget DiskBar {
     class 'Bar'
-    expression  proc_stat::disk('.*', 'rblk', 500)
-    expression2 proc_stat::disk('.*', 'wblk', 500)
+    #expression  proc_stat::disk('.*', 'rblk', 500)
+    #expression2 proc_stat::disk('.*', 'wblk', 500)
     # for kernel 2.6:
-    #expression  diskstats('.*', 'read_sectors',  500)
-    #expression2 diskstats('.*', 'write_sectors', 500)
+    expression  diskstats('.*', 'read_sectors',  500)
+    expression2 diskstats('.*', 'write_sectors', 500)
     length 14	
     direction 'E'
     update tack
@@ -609,9 +609,9 @@ Layout testMySQL {
 #Display 'CF631'
 #Display 'CF632'
 #Display 'CF633'
-#Display 'Curses'
+Display 'Curses'
 #Display 'USBLCD'
-Display 'T6963-240x64'
+#Display 'T6963-240x64'
 #Display 'XWindow'
 #Display 'Image'
 
diff --git a/plugin_apm.c b/plugin_apm.c
index 6c58009..feebb41 100644
--- a/plugin_apm.c
+++ b/plugin_apm.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_apm.c,v 1.1 2004/03/14 07:11:42 reinelt Exp $
+/* $Id: plugin_apm.c,v 1.2 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for APM (battery status)
  *
@@ -26,6 +26,10 @@
  *
  *
  * $Log: plugin_apm.c,v $
+ * Revision 1.2  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.1  2004/03/14 07:11:42  reinelt
  * parameter count fixed for plugin_dvb()
  * plugin_APM (battery status) ported
@@ -129,7 +133,7 @@ static int parse_proc_apm (void)
   int age, i;
 
   // reread every 10 msec only
-  age = hash_age (&APM, NULL, NULL);
+  age = hash_age (&APM, NULL);
   if (age > 0 && age <= 10) return 0;
   
   if (fd == -2) {
@@ -156,10 +160,9 @@ static int parse_proc_apm (void)
   for (i = 0; i < 9 && beg != NULL; i++) {
     while (*beg == ' ') beg++; 
     if ((end = strpbrk(beg, " \n"))) *end='\0'; 
-    hash_set (&APM, key[i], beg); 
+    hash_put (&APM, key[i], beg); 
     beg = end ? end+1 : NULL;
   }
-
   
   return 0;
 }
@@ -169,20 +172,23 @@ static void my_apm (RESULT *result, RESULT *arg1)
 {
   char *val;
   
-  if (parse_proc_apm()<0) {
+  if (parse_proc_apm() < 0) {
     SetResult(&result, R_STRING, ""); 
     return;
   }
 
-  val=hash_get(&APM, R2S(arg1));
-  if (val==NULL) val="";
+  val = hash_get(&APM, R2S(arg1), NULL);
+  if (val == NULL) val = "";
 
   SetResult(&result, R_STRING, val); 
 }
 
 int plugin_init_apm (void)
 {
+  hash_create (&APM);
+  
   AddFunction ("apm", 1, my_apm);
+
   return 0;
 }
 
@@ -192,5 +198,6 @@ void plugin_exit_apm (void)
     close (fd);
   }
   fd = -2;
+
   hash_destroy(&APM);
 }
diff --git a/plugin_cpuinfo.c b/plugin_cpuinfo.c
index 2fcb98d..f5923cc 100644
--- a/plugin_cpuinfo.c
+++ b/plugin_cpuinfo.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_cpuinfo.c,v 1.9 2004/03/11 06:39:59 reinelt Exp $
+/* $Id: plugin_cpuinfo.c,v 1.10 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for /proc/cpuinfo parsing
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_cpuinfo.c,v $
+ * Revision 1.10  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.9  2004/03/11 06:39:59  reinelt
  * big patch from Martin:
  * - reuse filehandles
@@ -91,7 +95,7 @@
 #include "hash.h"
 
 
-static HASH CPUinfo = { 0, };
+static HASH CPUinfo;
 static FILE *stream = NULL;
 
 static int parse_cpuinfo (void)
@@ -99,10 +103,10 @@ static int parse_cpuinfo (void)
   int age;
   
   // reread every second only
-  age=hash_age(&CPUinfo, NULL, NULL);
-  if (age>0 && age<=1000) return 0;
+  age = hash_age(&CPUinfo, NULL);
+  if (age > 0 && age <= 1000) return 0;
   
-  if (stream == NULL) stream=fopen("/proc/cpuinfo", "r");
+  if (stream == NULL) stream = fopen("/proc/cpuinfo", "r");
   if (stream == NULL) {
     error ("fopen(/proc/cpuinfo) failed: %s", strerror(errno));
     return -1;
@@ -112,21 +116,21 @@ static int parse_cpuinfo (void)
     char buffer[256];
     char *c, *key, *val;
     fgets (buffer, sizeof(buffer), stream);
-    c=strchr(buffer, ':');
-    if (c==NULL) continue;
-    key=buffer; val=c+1;
+    c = strchr(buffer, ':');
+    if (c == NULL) continue;
+    key = buffer; val = c+1;
     // strip leading blanks from key
-    while (isspace(*key)) *key++='\0';
+    while (isspace(*key)) *key++ = '\0';
     // strip trailing blanks from key
-    do *c='\0'; while (isspace(*--c));
+    do *c = '\0'; while (isspace(*--c));
     // strip leading blanks from value
-    while (isspace(*val)) *val++='\0';
+    while (isspace(*val)) *val++ = '\0';
     // strip trailing blanks from value
-    for (c=val; *c!='\0';c++);
-    while (isspace(*--c)) *c='\0';
+    for (c = val; *c != '\0'; c++);
+    while (isspace(*--c)) *c = '\0';
     
     // add entry to hash table
-    hash_set (&CPUinfo, key, val);
+    hash_put (&CPUinfo, key, val);
       
   }
   return 0;
@@ -137,14 +141,14 @@ static void my_cpuinfo (RESULT *result, RESULT *arg1)
 {
   char *key, *val;
   
-  if (parse_cpuinfo()<0) {
+  if (parse_cpuinfo() < 0) {
     SetResult(&result, R_STRING, ""); 
     return;
   }
   
-  key=R2S(arg1);
-  val=hash_get(&CPUinfo, key);
-  if (val==NULL) val="";
+  key = R2S(arg1);
+  val = hash_get(&CPUinfo, key, NULL);
+  if (val == NULL) val = "";
   
   SetResult(&result, R_STRING, val); 
 }
@@ -152,6 +156,7 @@ static void my_cpuinfo (RESULT *result, RESULT *arg1)
 
 int plugin_init_cpuinfo (void)
 {
+  hash_create (&CPUinfo);
   AddFunction ("cpuinfo", 1, my_cpuinfo);
   return 0;
 }
diff --git a/plugin_diskstats.c b/plugin_diskstats.c
index 2e5b5fe..8ca519d 100644
--- a/plugin_diskstats.c
+++ b/plugin_diskstats.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_diskstats.c,v 1.2 2004/05/29 01:07:56 reinelt Exp $
+/* $Id: plugin_diskstats.c,v 1.3 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for /proc/diskstats parsing
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_diskstats.c,v $
+ * Revision 1.3  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.2  2004/05/29 01:07:56  reinelt
  * bug in plugin_diskstats fixed
  *
@@ -51,29 +55,19 @@
 
 #include "debug.h"
 #include "plugin.h"
-#include "qprintf.h"
 #include "hash.h"
 
 
-static HASH DISKSTATS = { 0, };
+static HASH DISKSTATS;
 static FILE *stream = NULL;
 
 
-static void hash_set2 (char *key1, char *key2, char *val) 
-{
-  char key[32];
-  
-  qprintf(key, sizeof(key), "%s.%s", key1, key2);
-  hash_set_delta (&DISKSTATS, key, val);
-}
-
-
 static int parse_diskstats (void)
 {
   int age;
   
   // reread every 10 msec only
-  age = hash_age(&DISKSTATS, NULL, NULL);
+  age = hash_age(&DISKSTATS, NULL);
   if (age > 0 && age <= 10) return 0;
   
   if (stream == NULL) stream = fopen("/proc/diskstats", "r");
@@ -86,42 +80,31 @@ static int parse_diskstats (void)
   
   while (!feof(stream)) {
     char buffer[1024];
+    char dev[64];
     char *beg, *end;
-    char *major = NULL;
-    char *minor = NULL;
-    char *name  = NULL; 
-    char *key[]  = { "reads",  "read_merges",  "read_sectors",  "read_ticks",
-		     "writes", "write_merges", "write_sectors", "write_ticks",
-		     "in_flight", "io_ticks", "time_in_queue" 
-    };
-    
-    int i;
+    int num, len;
     
     if (fgets (buffer, sizeof(buffer), stream) == NULL) break;
     
+    // fetch device name (3rd column) as key
+    num = 0;
     beg = buffer;
-    i = 0;
-    while (beg != NULL) {
-      while (*beg == ' ') beg++; 
-      if ((end = strchr(beg, ' '))) *end = '\0'; 
-      switch (i) {
-      case 0:
-	major = beg;
-	break;
-      case 1:
-	minor = beg;
-	break;
-      case 2:
-	name = beg;
-	hash_set2 (name, "major", major); 
-	hash_set2 (name, "minor", minor); 
-	break;
-      default:
-	hash_set2 (name, key[i-3], beg); 
-      }
-      i++;
+    end = beg;
+    while (*beg) {
+      while (*beg == ' ') beg++;
+      end = beg+1;
+      while (*end && *end != ' ') end++;
+      if (num++ == 2) break;
       beg = end ? end+1 : NULL;
     }
+    len = end ? end - beg : strlen(beg);
+    
+    if (len >= sizeof(dev)) len = sizeof(dev)-1;
+    strncpy (dev, beg, len);
+    dev[len] = '\0';
+    
+    hash_put_delta (&DISKSTATS, dev, buffer); 
+    
   }
   return 0;
 }
@@ -129,7 +112,7 @@ static int parse_diskstats (void)
 
 static void my_diskstats (RESULT *result, RESULT *arg1, RESULT *arg2, RESULT *arg3)
 {
-  char *dev, *key, buffer[32];
+  char *dev, *key;
   int delay;
   double value;
   
@@ -142,8 +125,7 @@ static void my_diskstats (RESULT *result, RESULT *arg1, RESULT *arg2, RESULT *ar
   key   = R2S(arg2);
   delay = R2N(arg3);
   
-  qprintf(buffer, sizeof(buffer), "%s\\.%s", dev, key);
-  value  = hash_get_regex(&DISKSTATS, buffer, delay);
+  value  = hash_get_regex(&DISKSTATS, dev, key, delay);
   
   SetResult(&result, R_NUMBER, &value); 
 }
@@ -151,6 +133,18 @@ static void my_diskstats (RESULT *result, RESULT *arg1, RESULT *arg2, RESULT *ar
 
 int plugin_init_diskstats (void)
 {
+  int i;
+  char *header[] = { "major", "minor", "name", 
+		     "reads",  "read_merges",  "read_sectors",  "read_ticks",
+		     "writes", "write_merges", "write_sectors", "write_ticks",
+		     "in_flight", "io_ticks", "time_in_queue", "" };
+  
+  hash_create (&DISKSTATS);
+  hash_set_delimiter (&DISKSTATS, " \n");
+  for (i=0; *header[i] != '\0'; i++) {
+    hash_set_column (&DISKSTATS, i, header[i]);
+  }
+  
   AddFunction ("diskstats", 3, my_diskstats);
   return 0;
 }
diff --git a/plugin_dvb.c b/plugin_dvb.c
index 9bfa5f3..90db55e 100644
--- a/plugin_dvb.c
+++ b/plugin_dvb.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_dvb.c,v 1.4 2004/03/14 07:11:42 reinelt Exp $
+/* $Id: plugin_dvb.c,v 1.5 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for DVB status
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_dvb.c,v $
+ * Revision 1.5  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.4  2004/03/14 07:11:42  reinelt
  * parameter count fixed for plugin_dvb()
  * plugin_APM (battery status) ported
@@ -78,7 +82,7 @@
 
 static char *frontend="/dev/dvb/adapter0/frontend0";
 
-static HASH DVB = { 0, };
+static HASH DVB;
 
 static int get_dvb_stats (void)
 {
@@ -89,49 +93,49 @@ static int get_dvb_stats (void)
   char val[16];
   
   // reread every 1000 msec only
-  age=hash_age(&DVB, NULL, NULL);
-  if (age>0 && age<=1000) return 0;
+  age = hash_age(&DVB, NULL);
+  if (age > 0 && age <= 1000) return 0;
   
   // open frontend
   fd = open(frontend, O_RDONLY);
-  if (fd==-1) {
+  if (fd == -1) {
     error ("open(%s) failed: %s", frontend, strerror(errno));
     return -1;
   }
   
-  if (ioctl(fd, FE_READ_SIGNAL_STRENGTH, &sig)!=0) {
+  if (ioctl(fd, FE_READ_SIGNAL_STRENGTH, &sig) != 0) {
     error("ioctl(FE_READ_SIGNAL_STRENGTH) failed: %s", strerror(errno));
-    sig=0;
+    sig = 0;
   }
   
-  if (ioctl(fd, FE_READ_SNR, &snr)!=0) {
+  if (ioctl(fd, FE_READ_SNR, &snr) != 0) {
     error("ioctl(FE_READ_SNR) failed: %s", strerror(errno));
-    snr=0;
+    snr = 0;
   }
   
-  if (ioctl(fd, FE_READ_BER, &ber)!=0) {
+  if (ioctl(fd, FE_READ_BER, &ber) != 0) {
     error("ioctl(FE_READ_BER) failed: %s", strerror(errno));
-    ber=0;
+    ber = 0;
   }
 
-  if (ioctl(fd, FE_READ_UNCORRECTED_BLOCKS, &ucb)!=0) {
+  if (ioctl(fd, FE_READ_UNCORRECTED_BLOCKS, &ucb) != 0) {
     error("ioctl(FE_READ_UNCORRECTED_BLOCKS) failed: %s", strerror(errno));
-    ucb=0;
+    ucb = 0;
   }
 
   close (fd);
 
   snprintf (val, sizeof(val), "%f", sig/65535.0);
-  hash_set (&DVB, "signal_strength", val);
+  hash_put (&DVB, "signal_strength", val);
 
   snprintf (val, sizeof(val), "%f", snr/65535.0);
-  hash_set (&DVB, "snr", val);
+  hash_put (&DVB, "snr", val);
   
   snprintf (val, sizeof(val), "%lu", ber);
-  hash_set (&DVB, "ber", val);
+  hash_put (&DVB, "ber", val);
 
   snprintf (val, sizeof(val), "%lu", ucb);
-  hash_set (&DVB, "uncorrected_blocks", val);
+  hash_put (&DVB, "uncorrected_blocks", val);
 
   return 0;
 }
@@ -146,19 +150,22 @@ static void my_dvb (RESULT *result, RESULT *arg1)
     return;
   }
 
-  val=hash_get(&DVB, R2S(arg1));
+  val=hash_get(&DVB, R2S(arg1), NULL);
   if (val==NULL) val="";
-
+  
   SetResult(&result, R_STRING, val); 
 }
 
+
 int plugin_init_dvb (void)
 {
+  hash_create(&DVB);
   AddFunction ("dvb", 1, my_dvb);
   return 0;
 }
 
+
 void plugin_exit_dvb(void) 
 {
-	hash_destroy(&DVB);
+  hash_destroy(&DVB);
 }
diff --git a/plugin_exec.c b/plugin_exec.c
index 565ace1..a9a37c8 100644
--- a/plugin_exec.c
+++ b/plugin_exec.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_exec.c,v 1.2 2004/04/08 10:48:25 reinelt Exp $
+/* $Id: plugin_exec.c,v 1.3 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for external processes
  *
@@ -27,6 +27,10 @@
  *
  *
  * $Log: plugin_exec.c,v $
+ * Revision 1.3  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.2  2004/04/08 10:48:25  reinelt
  * finished plugin_exec
  * modified thread handling
@@ -78,7 +82,7 @@ typedef struct {
 static EXEC_THREAD Thread[NUM_THREADS];
 static int max_thread = -1;
 
-static HASH EXEC = { 0, };
+static HASH EXEC;
 
 
 // x^0 + x^5 + x^12
@@ -208,10 +212,10 @@ static int do_exec (char *cmd, char *key, int delay)
 {
   int i, age;
   
-  age = hash_age(&EXEC, key, NULL);
+  age = hash_age(&EXEC, key);
   
   if (age < 0) {
-    hash_set (&EXEC, key, "");
+    hash_put (&EXEC, key, "");
     // first-time call: create thread
     if (delay < 10) {
       error ("exec(%s): delay %d is too short! using 10 msec", cmd, delay);
@@ -232,7 +236,7 @@ static int do_exec (char *cmd, char *key, int delay)
       // lock shared memory
       mutex_lock(Thread[i].mutex);
       // copy data
-      hash_set (&EXEC, key, Thread[i].ret);
+      hash_put (&EXEC, key, Thread[i].ret);
       // unlock shared memory
       mutex_unlock(Thread[i].mutex);
       return 0;
@@ -258,7 +262,7 @@ static void my_exec (RESULT *result, RESULT *arg1, RESULT *arg2)
     return;
   }
   
-  val = hash_get(&EXEC, key);
+  val = hash_get(&EXEC, key, NULL);
   if (val == NULL) val = "";
   
   SetResult(&result, R_STRING, val); 
@@ -267,6 +271,7 @@ static void my_exec (RESULT *result, RESULT *arg1, RESULT *arg2)
 
 int plugin_init_exec (void)
 {
+  hash_create(&EXEC);
   AddFunction ("exec", 2, my_exec);
   return 0;
 }
diff --git a/plugin_i2c_sensors.c b/plugin_i2c_sensors.c
index 4f1e569..14ef61e 100644
--- a/plugin_i2c_sensors.c
+++ b/plugin_i2c_sensors.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_i2c_sensors.c,v 1.17 2004/06/05 14:56:48 reinelt Exp $
+/* $Id: plugin_i2c_sensors.c,v 1.18 2004/06/17 06:23:43 reinelt Exp $
  *
  * I2C sensors plugin
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_i2c_sensors.c,v $
+ * Revision 1.18  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.17  2004/06/05 14:56:48  reinelt
  *
  * Cwlinux splash screen fixed
@@ -155,7 +159,7 @@
 #endif
 
 static char *path=NULL;
-static HASH I2Csensors = { 0, };
+static HASH I2Csensors;
 
 static const char *procfs_tokens[4][3] = {
   {"temp_hyst", "temp_max", "temp_input"},	// for temp#
@@ -207,7 +211,7 @@ static int parse_i2c_sensors_sysfs(char *key)
     val[strlen(val)-1]='\0';
   } 
  
-  hash_set (&I2Csensors, key, val);
+  hash_put (&I2Csensors, key, val);
 
   return 0; 
 
@@ -276,7 +280,7 @@ static int parse_i2c_sensors_procfs(char *key)
     } else {
       qprintf (final_key, sizeof(final_key), "%s%s", procfs_tokens[tokens_index][pos], number);
       // debug ("%s -> %s", final_key, value);
-      hash_set (&I2Csensors, final_key, value);
+      hash_put (&I2Csensors, final_key, value);
       pos++;
     }
   }
@@ -293,11 +297,11 @@ void my_i2c_sensors(RESULT *result, RESULT *arg)
   char *val;
   char *key=R2S(arg);  
   
-  age=hash_age(&I2Csensors, key, &val);
+  age=hash_age(&I2Csensors, key);
   if (age<0 || age>250) {
     parse_i2c_sensors(key);
-    val=hash_get(&I2Csensors, key);
   }
+  val=hash_get(&I2Csensors, key, NULL);
   if (val) {
     SetResult(&result, R_STRING, val); 
   } else {
@@ -363,8 +367,11 @@ void my_i2c_sensors_path(char *method)
 
 int plugin_init_i2c_sensors (void)
 {
-  char *path_cfg = cfg_get(NULL, "i2c_sensors-path", "");
+  char *path_cfg;
 
+  hash_create(&I2Csensors);
+
+  path_cfg = cfg_get(NULL, "i2c_sensors-path", "");
   if (path_cfg == NULL || *path_cfg == '\0') {
     // debug("No path to i2c sensors found in the conf, calling my_i2c_sensors_path()");
     my_i2c_sensors_path("sysfs");
@@ -401,6 +408,8 @@ int plugin_init_i2c_sensors (void)
       error("i2c_sensors: unknown path %s, should start with /sys or /proc");
     }
   }
+
+  hash_create(&I2Csensors);
   
   return 0;
 }
diff --git a/plugin_imon.c b/plugin_imon.c
index 377bddd..7566f01 100755
--- a/plugin_imon.c
+++ b/plugin_imon.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_imon.c,v 1.8 2004/05/27 06:29:29 nicowallmeier Exp $
+/* $Id: plugin_imon.c,v 1.9 2004/06/17 06:23:43 reinelt Exp $
  *
  * imond/telmond data processing
  *
@@ -22,6 +22,10 @@
  *
  *
  * $Log: plugin_imon.c,v $
+ * Revision 1.9  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.8  2004/05/27 06:29:29  nicowallmeier
  * Moved variables to Plugin:imon / Plugin:telmon
  *
@@ -79,8 +83,8 @@
 #include <sys/socket.h>
 
 
-static HASH TELMON = { 0, };
-static HASH IMON = { 0, };
+static HASH TELMON;
+static HASH IMON;
 
 static char thost[256];
 static int tport;
@@ -251,7 +255,7 @@ static int parse_telmon(){
  int age;
    
  // reread every 1 sec only
- age=hash_age(&TELMON, NULL, NULL);
+ age=hash_age(&TELMON, NULL);
  if (age>0 && age<=1000) return 0;
 
  if (telmond_fd != -1){
@@ -266,17 +270,17 @@ static int parse_telmon(){
 	char number[256];
 	char msn[256];
 	sscanf(telbuf,"%s %s %s %s",date,time,number,msn);
-	hash_set (&TELMON, "time", time);
+	hash_put (&TELMON, "time", time);
 	date[4]='\0';
 	date[7]='\0';
 	qprintf(time, sizeof(time), "%s.%s.%s",date+8,date+5,date);
-	hash_set (&TELMON, "number", number);
-	hash_set (&TELMON, "msn", msn);
-	hash_set (&TELMON, "date", time);
+	hash_put (&TELMON, "number", number);
+	hash_put (&TELMON, "msn", msn);
+	hash_put (&TELMON, "date", time);
 	phonebook(number);
 	phonebook(msn);
-	hash_set (&TELMON, "name", number);
-	hash_set (&TELMON, "msnname", msn);
+	hash_put (&TELMON, "name", number);
+	hash_put (&TELMON, "msnname", msn);
    }
    close (telmond_fd);
    strcpy(oldanswer,telbuf);
@@ -292,7 +296,7 @@ static void my_telmon (RESULT *result, RESULT *arg1){
   return;
  }
   
- val=hash_get(&TELMON, R2S(arg1));
+ val=hash_get(&TELMON, R2S(arg1), NULL);
  if (val==NULL) val="";
  SetResult(&result, R_STRING, val); 
 }
@@ -314,14 +318,14 @@ void init(){
 
 static int parse_imon(char *cmd){
  // reread every half sec only
- int age=hash_age(&IMON, cmd, NULL);
+ int age=hash_age(&IMON, cmd);
  if (age>0 && age<=500) return 0;
 
  init(); // establish connection
 
  if (err) return -1;
  
- hash_set (&IMON, cmd , get_value(cmd));
+ hash_put (&IMON, cmd , get_value(cmd));
  
  return 0;
 }
@@ -329,7 +333,7 @@ static int parse_imon(char *cmd){
 static void my_imon_version (RESULT *result){
  char *val;
  // read only ones
- int age=hash_age(&IMON, "version", NULL);
+ int age=hash_age(&IMON, "version");
  if (age<0){
   char *s;
   init();
@@ -345,10 +349,10 @@ static void my_imon_version (RESULT *result){
    }
    s=s+1;		
   }
-  hash_set (&IMON, "version", s);
+  hash_put (&IMON, "version", s);
  }
 	
- val=hash_get(&IMON, "version");
+ val=hash_get(&IMON, "version", NULL);
  if (val==NULL) val="";
  SetResult(&result, R_STRING, val); 
 }
@@ -361,7 +365,7 @@ static int parse_imon_rates(char *channel){
  qprintf(buf,sizeof(buf),"rate %s in",channel);
  
  // reread every half sec only
- age=hash_age(&IMON, buf, NULL);
+ age=hash_age(&IMON, buf);
  if (age>0 && age<=500) return 0;
 
  init(); // establish connection
@@ -374,9 +378,9 @@ static int parse_imon_rates(char *channel){
  if (sscanf(s,"%s %s",in, out)!=2) return -1;
 
  qprintf(buf, sizeof(buf), "rate %s in", channel);
- hash_set (&IMON, buf , in);
+ hash_put (&IMON, buf , in);
  qprintf(buf, sizeof(buf), "rate %s out", channel);
- hash_set (&IMON, buf , out);
+ hash_put (&IMON, buf , out);
  
  return 0;
 }
@@ -393,7 +397,7 @@ static void my_imon_rates (RESULT *result, RESULT *arg1, RESULT *arg2){
  
  qprintf(buf,sizeof(buf),"rate %s %s",R2S(arg1),R2S(arg2));
 
- val=hash_get(&IMON, buf);
+ val=hash_get(&IMON, buf, NULL);
  if (val==NULL) val="";
  SetResult(&result, R_STRING, val); 
 }
@@ -406,7 +410,7 @@ static void my_imon (RESULT *result, RESULT *arg1){
   return;
  }
   
- val=hash_get(&IMON, cmd);
+ val=hash_get(&IMON, cmd, NULL);
  if (val==NULL) val="";
  SetResult(&result, R_STRING, val); 
 }
@@ -414,6 +418,9 @@ static void my_imon (RESULT *result, RESULT *arg1){
 int plugin_init_imon (void){
  char telmon='\1',imon='\1';	
 
+ hash_create(&TELMON);
+ hash_create(&IMON);
+
  char *s=cfg_get ("Plugin:Telmon", "Host","127.0.0.1");
  if (*s=='\0') {
   error ("[Telmon] no 'Host' entry in %s", cfg_source());
diff --git a/plugin_isdn.c b/plugin_isdn.c
index d616efc..4298d94 100644
--- a/plugin_isdn.c
+++ b/plugin_isdn.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_isdn.c,v 1.1 2004/05/19 05:23:25 reinelt Exp $
+/* $Id: plugin_isdn.c,v 1.2 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for ISDN subsystem
  *
@@ -26,6 +26,10 @@
  *
  *
  * $Log: plugin_isdn.c,v $
+ * Revision 1.2  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.1  2004/05/19 05:23:25  reinelt
  *
  * plugin_isdn.c added (sorry, I forgot...)
@@ -70,16 +74,16 @@ typedef struct {
 } CPS;
 
 
-static HASH ISDN_INFO = { 0, };
-static HASH ISDN_CPS  = { 0, };
+static HASH ISDN_INFO;
+static HASH ISDN_CPS;
 
 
-static void hash_set_info (char *name, int channel, char *val)
+static void hash_put_info (char *name, int channel, char *val)
 {
   char key[16];
 
   qprintf (key, sizeof(key), "%s[%d]", name, channel);
-  hash_set (&ISDN_INFO, key, val);
+  hash_put (&ISDN_INFO, key, val);
 }
 
 static int parse_isdninfo (void)
@@ -89,7 +93,7 @@ static int parse_isdninfo (void)
   long flags;
   
   // reread every 10 msec only
-  age = hash_age(&ISDN_INFO, NULL, NULL);
+  age = hash_age(&ISDN_INFO, NULL);
   if (age > 0 && age <= 10) return 0;
 
   // open file
@@ -124,7 +128,7 @@ static int parse_isdninfo (void)
       while (*beg && strchr(delim, *beg)) beg++; 
       while (beg && *beg) {
 	if ((end = strpbrk(beg, delim))) *end = '\0'; 
-	hash_set_info(buffer, i, beg);
+	hash_put_info(buffer, i, beg);
 	beg = end ? end+1 : NULL;
 	while (*beg && strchr(delim, *beg)) beg++; 
 	i++;
@@ -150,7 +154,7 @@ static void my_isdn_info (RESULT *result, RESULT *arg1, RESULT *arg2)
   }
   
   qprintf(key, sizeof(key), "%s[%d]", R2S(arg1), (int)R2N(arg2));
-  val = hash_get(&ISDN_INFO, key);
+  val = hash_get(&ISDN_INFO, key, NULL);
   if (val == NULL) val = "";
   SetResult(&result, R_STRING, val); 
 }
@@ -158,17 +162,17 @@ static void my_isdn_info (RESULT *result, RESULT *arg1, RESULT *arg2)
 
 #ifdef HAVE_LINUX_ISDN_H
 
-static void hash_set_cps (int channel, CPS *cps)
+static void hash_put_cps (int channel, CPS *cps)
 {
   char key[16], val[16];
 
   qprintf (key, sizeof(key), channel < 0 ? "i" : "i%d", channel);
   qprintf (val, sizeof(val), "%u", cps->in);
-  hash_set_delta (&ISDN_CPS, key, val);
+  hash_put_delta (&ISDN_CPS, key, val);
 
   qprintf (key, sizeof(key), channel < 0 ? "o" : "o%d", channel);
   qprintf (val, sizeof(val), "%u", cps->out);
-  hash_set_delta (&ISDN_CPS, key, val);
+  hash_put_delta (&ISDN_CPS, key, val);
 }
 
 
@@ -180,7 +184,7 @@ static int get_cps(void)
   CPS sum;
 
   // reread every 10 msec only
-  age = hash_age(&ISDN_CPS, NULL, NULL);
+  age = hash_age(&ISDN_CPS, NULL);
   if (age > 0 && age <= 10) return 0;
   
   if (fd == -1) return -1;
@@ -204,9 +208,9 @@ static int get_cps(void)
   for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
     sum.in  += cps[i].in;
     sum.out += cps[i].out;
-    hash_set_cps (i, &cps[i]);
+    hash_put_cps (i, &cps[i]);
   }
-  hash_set_cps (-1, &sum);
+  hash_put_cps (-1, &sum);
 
   return 0;
 }
@@ -221,7 +225,7 @@ static void my_isdn_cps (RESULT *result, RESULT *arg1, RESULT *arg2)
     return;
   }
   
-  value = hash_get_delta(&ISDN_CPS, R2S(arg1), R2N(arg2));
+  value = hash_get_delta(&ISDN_CPS, R2S(arg1), NULL, R2N(arg2));
   SetResult(&result, R_NUMBER, &value); 
 
 }
@@ -231,6 +235,9 @@ static void my_isdn_cps (RESULT *result, RESULT *arg1, RESULT *arg2)
 
 int plugin_init_isdn (void)
 {
+  hash_create(&ISDN_INFO);
+  hash_create(&ISDN_CPS);
+
   AddFunction ("isdn::info", 2, my_isdn_info);
 
 #ifdef HAVE_LINUX_ISDN_H
diff --git a/plugin_meminfo.c b/plugin_meminfo.c
index d9203de..a15565e 100644
--- a/plugin_meminfo.c
+++ b/plugin_meminfo.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_meminfo.c,v 1.7 2004/03/11 06:39:59 reinelt Exp $
+/* $Id: plugin_meminfo.c,v 1.8 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for /proc/meminfo parsing
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_meminfo.c,v $
+ * Revision 1.8  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.7  2004/03/11 06:39:59  reinelt
  * big patch from Martin:
  * - reuse filehandles
@@ -82,7 +86,7 @@
 #include "hash.h"
 
 
-static HASH MemInfo = { 0, };
+static HASH MemInfo;
 static FILE *stream = NULL;
 
 static int parse_meminfo (void)
@@ -90,7 +94,7 @@ static int parse_meminfo (void)
   int age;
   
   // reread every 10 msec only
-  age=hash_age(&MemInfo, NULL, NULL);
+  age=hash_age(&MemInfo, NULL);
   if (age>0 && age<=10) return 0;
   
   if (stream==NULL) stream=fopen("/proc/meminfo", "r");
@@ -121,7 +125,7 @@ static int parse_meminfo (void)
       // strip trailing " kB" from value
       *(c-2)='\0';
       // add entry to hash table
-      hash_set (&MemInfo, key, val);
+      hash_put (&MemInfo, key, val);
     }
   }
   return 0;
@@ -137,7 +141,7 @@ static void my_meminfo (RESULT *result, RESULT *arg1)
   }
   
   key=R2S(arg1);
-  val=hash_get(&MemInfo, key);
+  val=hash_get(&MemInfo, key, NULL);
   if (val==NULL) val="";
   
   SetResult(&result, R_STRING, val); 
@@ -146,6 +150,7 @@ static void my_meminfo (RESULT *result, RESULT *arg1)
 
 int plugin_init_meminfo (void)
 {
+  hash_create(&MemInfo);
   AddFunction ("meminfo", 1, my_meminfo);
   return 0;
 }
diff --git a/plugin_netdev.c b/plugin_netdev.c
index be2b411..c679ae1 100644
--- a/plugin_netdev.c
+++ b/plugin_netdev.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_netdev.c,v 1.8 2004/05/27 03:39:47 reinelt Exp $
+/* $Id: plugin_netdev.c,v 1.9 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for /proc/net/dev parsing
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_netdev.c,v $
+ * Revision 1.9  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.8  2004/05/27 03:39:47  reinelt
  *
  * changed function naming scheme to plugin::function
@@ -83,15 +87,17 @@
 #include "hash.h"
 
 
-static HASH NetDev = { 0, };
+static HASH NetDev;
 static FILE *stream = NULL;
 
-static void hash_set3 (char *key1, char *key2, char *key3, char *val) 
+// Fixme: use new & fast hash code!!!
+
+static void hash_put3 (char *key1, char *key2, char *key3, char *val) 
 {
   char key[32];
   
   qprintf(key, sizeof(key), "%s.%s.%s", key1, key2, key3);
-  hash_set_delta (&NetDev, key, val);
+  hash_put_delta (&NetDev, key, val);
 }
 
 
@@ -102,7 +108,7 @@ static int parse_netdev (void)
   int  RxTx=0; // position of Receive/Transmit switch
   
   // reread every 10 msec only
-  age=hash_age(&NetDev, NULL, NULL);
+  age=hash_age(&NetDev, NULL);
   if (age>0 && age<=10) return 0;
   
   if (stream==NULL) stream=fopen("/proc/net/dev", "r");
@@ -148,7 +154,7 @@ static int parse_netdev (void)
 	if (col==0) {
 	  iface=h;
 	} else {
-	  hash_set3 (iface, (h-buffer) < RxTx ? "Rx" : "Tx", head[col], h);
+	  hash_put3 (iface, (h-buffer) < RxTx ? "Rx" : "Tx", head[col], h);
 	}
 	h=t?t+1:NULL;
 	col++;
@@ -173,7 +179,7 @@ static void my_netdev (RESULT *result, RESULT *arg1, RESULT *arg2)
   key   = R2S(arg1);
   delay = R2N(arg2);
   
-  value  = hash_get_regex(&NetDev, key, delay);
+  value  = hash_get_regex(&NetDev, key, NULL, delay);
   
   SetResult(&result, R_NUMBER, &value); 
 }
@@ -192,7 +198,7 @@ static void my_netdev_fast(RESULT *result, RESULT *arg1, RESULT *arg2)
   key   = R2S(arg1);
   delay = R2N(arg2);
   
-  value  = hash_get_delta(&NetDev, key, delay);
+  value  = hash_get_delta(&NetDev, key, NULL, delay);
   
   SetResult(&result, R_NUMBER, &value); 
 }
@@ -200,6 +206,7 @@ static void my_netdev_fast(RESULT *result, RESULT *arg1, RESULT *arg2)
 
 int plugin_init_netdev (void)
 {
+  hash_create(&NetDev);
   AddFunction ("netdev",       2, my_netdev);
   AddFunction ("netdev::fast", 2, my_netdev_fast);
   return 0;
diff --git a/plugin_ppp.c b/plugin_ppp.c
index be51ff7..e77ed74 100644
--- a/plugin_ppp.c
+++ b/plugin_ppp.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_ppp.c,v 1.5 2004/05/29 15:53:28 reinelt Exp $
+/* $Id: plugin_ppp.c,v 1.6 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for ppp throughput
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_ppp.c,v $
+ * Revision 1.6  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.5  2004/05/29 15:53:28  reinelt
  *
  * M50530: reset parport signals on exit
@@ -77,7 +81,7 @@
 
 #ifdef HAVE_NET_IF_PPP_H
 
-static HASH PPP = { 0, };
+static HASH PPP;
 
 static int get_ppp_stats (void)
 {
@@ -89,7 +93,7 @@ static int get_ppp_stats (void)
   char key[16], val[16];
 
   // reread every 10 msec only
-  age=hash_age(&PPP, NULL, NULL);
+  age=hash_age(&PPP, NULL);
   if (age>0 && age<=10) return 0;
   
   // open socket only once
@@ -114,10 +118,10 @@ static int get_ppp_stats (void)
     }
     qprintf(key, sizeof(key), "Rx:%d", unit);
     qprintf(val, sizeof(val), "%d", ibytes);
-    hash_set_delta (&PPP, key, val);
+    hash_put_delta (&PPP, key, val);
     qprintf(key, sizeof(key), "Tx:%d", unit);
     qprintf(val, sizeof(val), "%d", obytes);
-    hash_set_delta (&PPP, key, val);
+    hash_put_delta (&PPP, key, val);
 
   }
   return 0;
@@ -132,7 +136,7 @@ static void my_ppp (RESULT *result, RESULT *arg1, RESULT *arg2)
     SetResult(&result, R_STRING, ""); 
     return;
   }
-  value=hash_get_delta(&PPP, R2S(arg1), R2N(arg2));
+  value=hash_get_delta(&PPP, R2S(arg1), NULL, R2N(arg2));
   SetResult(&result, R_NUMBER, &value); 
 }
 
@@ -141,6 +145,7 @@ static void my_ppp (RESULT *result, RESULT *arg1, RESULT *arg2)
 
 int plugin_init_ppp (void)
 {
+  hash_create(&PPP);
 #ifdef HAVE_NET_IF_PPP_H
   AddFunction ("ppp", 2, my_ppp);
 #endif
@@ -149,5 +154,5 @@ int plugin_init_ppp (void)
 
 void plugin_exit_ppp(void) 
 {
-	hash_destroy(&PPP);
+  hash_destroy(&PPP);
 }
diff --git a/plugin_proc_stat.c b/plugin_proc_stat.c
index af79a0c..6c20755 100644
--- a/plugin_proc_stat.c
+++ b/plugin_proc_stat.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_proc_stat.c,v 1.19 2004/05/27 03:39:47 reinelt Exp $
+/* $Id: plugin_proc_stat.c,v 1.20 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for /proc/stat parsing
  *
@@ -23,6 +23,10 @@
  *
  *
  * $Log: plugin_proc_stat.c,v $
+ * Revision 1.20  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.19  2004/05/27 03:39:47  reinelt
  *
  * changed function naming scheme to plugin::function
@@ -123,31 +127,31 @@
 #include "hash.h"
 
 
-static HASH Stat = { 0, };
+static HASH Stat;
 static FILE *stream = NULL;
 
 
-static void hash_set1 (char *key1, char *val) 
+static void hash_put1 (char *key1, char *val) 
 {
-  hash_set_delta (&Stat, key1, val);
+  hash_put_delta (&Stat, key1, val);
 }
 
 
-static void hash_set2 (char *key1, char *key2, char *val) 
+static void hash_put2 (char *key1, char *key2, char *val) 
 {
   char key[32];
   
   qprintf(key, sizeof(key), "%s.%s", key1, key2);
-  hash_set1 (key, val);
+  hash_put1 (key, val);
 }
 
 
-static void hash_set3 (char *key1, char *key2, char *key3, char *val) 
+static void hash_put3 (char *key1, char *key2, char *key3, char *val) 
 {
   char key[32];
   
   qprintf(key, sizeof(key), "%s.%s.%s", key1, key2, key3);
-  hash_set1 (key, val);
+  hash_put1 (key, val);
 }
 
 
@@ -156,7 +160,7 @@ static int parse_proc_stat (void)
   int age;
   
   // reread every 10 msec only
-  age=hash_age(&Stat, NULL, NULL);
+  age=hash_age(&Stat, NULL);
   if (age>0 && age<=10) return 0;
   
   if (stream==NULL) stream=fopen("/proc/stat", "r");
@@ -186,7 +190,7 @@ static int parse_proc_stat (void)
       for (i=0; i<4 && beg!=NULL; i++) {
 	while (strchr(delim, *beg)) beg++; 
 	if ((end=strpbrk(beg, delim))) *end='\0'; 
-	hash_set2 (cpu, key[i], beg); 
+	hash_put2 (cpu, key[i], beg); 
 	beg=end?end+1:NULL;
       }
     } 
@@ -199,7 +203,7 @@ static int parse_proc_stat (void)
       for (i=0, beg=buffer+5; i<2 && beg!=NULL; i++) {
 	while (strchr(delim, *beg)) beg++; 
 	if ((end=strpbrk(beg, delim))) *end='\0'; 
-	hash_set2 ("page", key[i], beg); 
+	hash_put2 ("page", key[i], beg); 
 	beg=end?end+1:NULL;
       }
     } 
@@ -213,7 +217,7 @@ static int parse_proc_stat (void)
       for (i=0, beg=buffer+5; i<2 && beg!=NULL; i++) {
 	while (strchr(delim, *beg)) beg++; 
 	if ((end=strpbrk(beg, delim))) *end='\0'; 
-	hash_set2 ("swap", key[i], beg); 
+	hash_put2 ("swap", key[i], beg); 
 	beg=end?end+1:NULL;
       }
     } 
@@ -230,7 +234,7 @@ static int parse_proc_stat (void)
 	  strcpy(num, "sum");
 	else 
 	  qprintf(num, sizeof(num), "%d", i-1);
-	hash_set2 ("intr", num,  beg);
+	hash_put2 ("intr", num,  beg);
 	beg=end?end+1:NULL;
       }
     } 
@@ -249,7 +253,7 @@ static int parse_proc_stat (void)
 	for (i=0; i<5 && beg!=NULL; i++) {
 	  while (strchr(delim, *beg)) beg++; 
 	  if ((end=strpbrk(beg, delim))) *end='\0'; 
-	  hash_set3 ("disk_io", dev, key[i], beg); 
+	  hash_put3 ("disk_io", dev, key[i], beg); 
 	  beg=end?end+1:NULL;
 	}
 	dev=beg;
@@ -265,7 +269,7 @@ static int parse_proc_stat (void)
       beg=end?end+1:NULL;
       if ((end=strpbrk(beg, delim))) *end='\0'; 
       while (strchr(delim, *beg)) beg++; 
-      hash_set1 (buffer, beg);
+      hash_put1 (buffer, beg);
     } 
   }
   return 0;
@@ -284,12 +288,12 @@ static void my_proc_stat (RESULT *result, int argc, RESULT *argv[])
   
   switch (argc) {
   case 1:
-    string=hash_get(&Stat, R2S(argv[0]));
+    string=hash_get(&Stat, R2S(argv[0]), NULL);
     if (string==NULL) string="";
     SetResult(&result, R_STRING, string); 
     break;
   case 2:
-    number=hash_get_delta(&Stat, R2S(argv[0]), R2N(argv[1]));
+    number=hash_get_delta(&Stat, R2S(argv[0]), NULL, R2N(argv[1]));
     SetResult(&result, R_NUMBER, &number); 
     break;
   default:
@@ -314,10 +318,10 @@ static void my_cpu (RESULT *result, RESULT *arg1, RESULT *arg2)
   key   = R2S(arg1);
   delay = R2N(arg2);
   
-  cpu_user   = hash_get_delta(&Stat, "cpu.user",   delay);
-  cpu_nice   = hash_get_delta(&Stat, "cpu.nice",   delay);
-  cpu_system = hash_get_delta(&Stat, "cpu.system", delay);
-  cpu_idle   = hash_get_delta(&Stat, "cpu.idle",   delay);
+  cpu_user   = hash_get_delta(&Stat, "cpu.user",   NULL, delay);
+  cpu_nice   = hash_get_delta(&Stat, "cpu.nice",   NULL, delay);
+  cpu_system = hash_get_delta(&Stat, "cpu.system", NULL, delay);
+  cpu_idle   = hash_get_delta(&Stat, "cpu.idle",   NULL, delay);
 
   cpu_total  = cpu_user+cpu_nice+cpu_system+cpu_idle;
   
@@ -352,7 +356,7 @@ static void my_disk (RESULT *result, RESULT *arg1, RESULT *arg2, RESULT *arg3)
   delay = R2N(arg3);
   
   qprintf(buffer, sizeof(buffer), "disk_io\\.%s\\.%s", dev, key);
-  value  = hash_get_regex(&Stat, buffer, delay);
+  value  = hash_get_regex(&Stat, buffer, NULL, delay);
   
   SetResult(&result, R_NUMBER, &value); 
 }
@@ -360,6 +364,7 @@ static void my_disk (RESULT *result, RESULT *arg1, RESULT *arg2, RESULT *arg3)
 
 int plugin_init_proc_stat (void)
 {
+  hash_create(&Stat);
   AddFunction ("proc_stat",      -1, my_proc_stat);
   AddFunction ("proc_stat::cpu",  2, my_cpu);
   AddFunction ("proc_stat::disk", 3, my_disk);
diff --git a/plugin_seti.c b/plugin_seti.c
index 9d3a82e..645d142 100644
--- a/plugin_seti.c
+++ b/plugin_seti.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_seti.c,v 1.2 2004/03/13 19:06:01 reinelt Exp $
+/* $Id: plugin_seti.c,v 1.3 2004/06/17 06:23:43 reinelt Exp $
  *
  * plugin for seti@home status reporting
  *
@@ -27,6 +27,10 @@
  *
  *
  * $Log: plugin_seti.c,v $
+ * Revision 1.3  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.2  2004/03/13 19:06:01  reinelt
  * ChangeLog and Status update; small glitch in plugin_seti fixed.
  *
@@ -61,7 +65,7 @@
 #define DIRKEY    "Directory"
 #define STATEFILE "state.sah"
 
-static HASH SETI = { 0, };
+static HASH SETI;
 static int fatal = 0;
 
 static int parse_seti (void)
@@ -74,7 +78,7 @@ static int parse_seti (void)
   if (fatal != 0) return -1;
   
   // reread every 100 msec only
-  age=hash_age(&SETI, NULL, NULL);
+  age=hash_age(&SETI, NULL);
   if (age>0 && age<=100) return 0;
   
   if (fn[0] == '\0') {
@@ -120,7 +124,7 @@ static int parse_seti (void)
     for (c=val; *c!='\0';c++);
     while (isspace(*--c)) *c='\0';
     // add entry to hash table
-    hash_set (&SETI, key, val);
+    hash_put (&SETI, key, val);
   }
   
   fclose (stream);
@@ -139,7 +143,7 @@ static void my_seti (RESULT *result, RESULT *arg1)
   }
   
   key=R2S(arg1);
-  val=hash_get(&SETI, key);
+  val=hash_get(&SETI, key, NULL);
   if (val==NULL) val="";
   
   SetResult(&result, R_STRING, val); 
@@ -148,6 +152,7 @@ static void my_seti (RESULT *result, RESULT *arg1)
 
 int plugin_init_seti (void)
 {
+  hash_create(&SETI);
   AddFunction ("seti", 1, my_seti);
   return 0;
 }
diff --git a/plugin_wireless.c b/plugin_wireless.c
index df626e8..23385fa 100755
--- a/plugin_wireless.c
+++ b/plugin_wireless.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_wireless.c,v 1.3 2004/05/27 03:39:47 reinelt Exp $
+/* $Id: plugin_wireless.c,v 1.4 2004/06/17 06:23:43 reinelt Exp $
  *
  * Wireless Extension plugin
  *
@@ -28,6 +28,10 @@
  *
  *
  * $Log: plugin_wireless.c,v $
+ * Revision 1.4  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.3  2004/05/27 03:39:47  reinelt
  *
  * changed function naming scheme to plugin::function
@@ -104,7 +108,7 @@
 #define MWATT2DBM(in) ((int) (ceil(10.0 * log10((double) in))))
 
 
-static HASH wireless = { 0, };
+static HASH wireless;
 static int sock=-2;
 
 static char *operation_mode[] = { 
@@ -181,7 +185,7 @@ static int get_ifname(struct iwreq *preq, char *dev) {
     return -1;
   }
 
-  hash_set(&wireless,key_buffer, preq->u.name);
+  hash_put(&wireless,key_buffer, preq->u.name);
   return(0);
 
 }
@@ -195,7 +199,7 @@ static int get_frequency(char* dev,char* key) {
   int age;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -226,7 +230,7 @@ static int get_frequency(char* dev,char* key) {
 */
   snprintf(qprintf_buffer,sizeof(qprintf_buffer), "%g", freq);
 
-  hash_set(&wireless, key_buffer, qprintf_buffer);
+  hash_put(&wireless, key_buffer, qprintf_buffer);
   return(0);
   
 }
@@ -240,7 +244,7 @@ static int get_essid(char* dev,char* key) {
 
   
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -261,7 +265,7 @@ static int get_essid(char* dev,char* key) {
     return -1;
   }
 
-  hash_set(&wireless,key_buffer, essid_buffer);  
+  hash_put(&wireless,key_buffer, essid_buffer);  
   return(0);
   
 }
@@ -273,7 +277,7 @@ static int get_op_mode(char* dev,char* key) {
   int age;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -293,7 +297,7 @@ static int get_op_mode(char* dev,char* key) {
     req.u.mode=7; /* mode not available */
   }      
 
-  hash_set(&wireless,key_buffer, operation_mode[req.u.mode]);  
+  hash_put(&wireless,key_buffer, operation_mode[req.u.mode]);  
   return(0);
       
 }
@@ -307,7 +311,7 @@ static int get_bitrate(char* dev,char* key) {
   double bitrate=0;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -335,7 +339,7 @@ static int get_bitrate(char* dev,char* key) {
 */  
   snprintf(bitrate_buffer,sizeof(bitrate_buffer), "%g", bitrate);
   
-  hash_set(&wireless,key_buffer, bitrate_buffer);   
+  hash_put(&wireless,key_buffer, bitrate_buffer);   
   
   return(0);
 }
@@ -351,7 +355,7 @@ static int get_sens(char* dev,char* key) {
   int has_range =0;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -385,7 +389,7 @@ static int get_sens(char* dev,char* key) {
     qprintf(buffer, sizeof(buffer), "%d", req.u.sens.value);
   }
 
-  hash_set(&wireless,key_buffer, buffer);
+  hash_put(&wireless,key_buffer, buffer);
     return(0);
 }
     
@@ -401,7 +405,7 @@ static int get_sec_mode(char* dev,char* key) {
   int key_size=0;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -430,9 +434,9 @@ static int get_sec_mode(char* dev,char* key) {
   //  printf(" [%d]", info->key_flags & IW_ENCODE_INDEX);
 
   if(has_key && (key_flags & IW_ENCODE_RESTRICTED))
-    hash_set(&wireless,key_buffer, "restricted");
+    hash_put(&wireless,key_buffer, "restricted");
   else if(has_key && (key_flags & IW_ENCODE_OPEN))
-    hash_set(&wireless,key_buffer, "open");  
+    hash_put(&wireless,key_buffer, "open");  
 
     return(0);
 }
@@ -447,7 +451,7 @@ static int get_stats(char *dev, char *key)
   struct iw_range range;
 
   qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
-  age=hash_age(&wireless, key, NULL);
+  age=hash_age(&wireless, key);
   
   /* reread every HASH_TTL msec only */
   if (age>0 && age<=HASH_TTL) {
@@ -473,28 +477,28 @@ static int get_stats(char *dev, char *key)
   if(stats.qual.level > range.max_qual.level)  {
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d", stats.qual.level-0x100);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_LEVEL);
-    hash_set(&wireless,key_buffer, qprintf_buffer);
+    hash_put(&wireless,key_buffer, qprintf_buffer);
 
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d", stats.qual.noise-0x100);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_NOISE);
-    hash_set(&wireless,key_buffer, qprintf_buffer);
+    hash_put(&wireless,key_buffer, qprintf_buffer);
 
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.qual,range.max_qual.qual);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_QUALITY);
-    hash_set(&wireless,key_buffer, qprintf_buffer);
+    hash_put(&wireless,key_buffer, qprintf_buffer);
   } else {
 
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.level, range.max_qual.level);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_LEVEL);;
-    hash_set(&wireless,key_buffer, qprintf_buffer);
+    hash_put(&wireless,key_buffer, qprintf_buffer);
 
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.noise,range.max_qual.noise);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_NOISE);
-    hash_set(&wireless,key_buffer, qprintf_buffer);
+    hash_put(&wireless,key_buffer, qprintf_buffer);
 
     qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.qual, range.max_qual.qual);
     qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_QUALITY);
-    hash_set(&wireless,key_buffer, qprintf_buffer);    
+    hash_put(&wireless,key_buffer, qprintf_buffer);    
   }
 
   return 0; 
@@ -529,7 +533,7 @@ static void save_result(RESULT *result, char* dev, char* key, int res) {
     return;
   }
   
-  val=hash_get(&wireless,key_buffer);
+  val=hash_get(&wireless,key_buffer, NULL);
 
   if (val) {
     SetResult(&result, R_STRING, val);     
@@ -622,6 +626,8 @@ init and cleanup
 
 int plugin_init_wireless(void)
 {
+  hash_create(&wireless);
+
   AddFunction ("wifi::level",       1, wireless_level);
   AddFunction ("wifi::noise",       1, wireless_noise);
   AddFunction ("wifi::quality",     1, wireless_quality);
diff --git a/plugin_xmms.c b/plugin_xmms.c
index 25d3add..e38ef6e 100644
--- a/plugin_xmms.c
+++ b/plugin_xmms.c
@@ -1,4 +1,4 @@
-/* $Id: plugin_xmms.c,v 1.9 2004/03/03 03:47:04 reinelt Exp $
+/* $Id: plugin_xmms.c,v 1.10 2004/06/17 06:23:43 reinelt Exp $
  *
  * XMMS-Plugin for LCD4Linux
  * Copyright 2003 Markus Keil <markus_keil@t-online.de>
@@ -21,6 +21,10 @@
  *
  *
  * $Log: plugin_xmms.c,v $
+ * Revision 1.10  2004/06/17 06:23:43  reinelt
+ *
+ * hash handling rewritten to solve performance issues
+ *
  * Revision 1.9  2004/03/03 03:47:04  reinelt
  * big patch from Martin Hejl:
  * - use qprintf() where appropriate
@@ -95,7 +99,7 @@
 #include "plugin.h"
 
 
-static HASH xmms = { 0, };
+static HASH xmms;
 
 
 static int parse_xmms_info (void)
@@ -105,7 +109,7 @@ static int parse_xmms_info (void)
   char zeile[200];
   
   // reread every 100msec only
-  age=hash_age(&xmms, NULL, NULL);
+  age=hash_age(&xmms, NULL);
   if (age>=0 && age<=200) return 0;
   // Open Filestream for '/tmp/xmms-info'
   xmms_stream = fopen("/tmp/xmms-info","r");
@@ -131,7 +135,7 @@ static int parse_xmms_info (void)
     // strip trailing blanks from value
     for (c=val; *c!='\0';c++);
     while (isspace(*--c)) *c='\0';
-    hash_set (&xmms, key, val);
+    hash_put (&xmms, key, val);
   }
   
   fclose(xmms_stream);
@@ -149,7 +153,7 @@ static void my_xmms (RESULT *result, RESULT *arg1)
   }
    
   key=R2S(arg1);
-  val=hash_get(&xmms, key);
+  val=hash_get(&xmms, key, NULL);
   if (val==NULL) val="";
   
   SetResult(&result, R_STRING, val);
@@ -158,6 +162,7 @@ static void my_xmms (RESULT *result, RESULT *arg1)
 
 int plugin_init_xmms (void)
 {
+  hash_create(&xmms);
 
   // register xmms info
   AddFunction ("xmms", 1, my_xmms);
@@ -167,5 +172,5 @@ int plugin_init_xmms (void)
 
 void plugin_exit_xmms(void) 
 {
-	hash_destroy(&xmms);
+  hash_destroy(&xmms);
 }
-- 
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