Changeset 611 for trunk/kernel/libk

Timestamp:

Jan 9, 2019, 3:02:51 PM (6 years ago)

Author:

alain

Message:

Introduce sigificant modifs in VFS to support the <ls> command,
and the . and .. directories entries.

Location:

trunk/kernel/libk

Files:

• remote_mutex.c (modified) (1 diff)
• remote_mutex.h (modified) (1 diff)
• string.h (modified) (2 diffs)
• xhtab.h (modified) (2 diffs)

trunk/kernel/libk/remote_mutex.c

@@ -137 +137 @@
 #if DEBUG_MUTEX
 thread_t * this = CURRENT_THREAD;
-if( (uint32_t)hal_get_cycles() > DEBUG_QUEUELOCK )
+if( (uint32_t)hal_get_cycles() > DEBUG_MUTEX )
 printk("\n[DBG] %s : thread %x in %x process / mutex(%x,%x)\n",
 __FUNCTION__, this->trdid, this->process->pid, local_cxy, mutex_ptr );

trunk/kernel/libk/remote_mutex.h

@@ -38 +38 @@
  * This user type is implemented as an unsigned long, but the value is not used by the 
  * kernel. ALMOS-MKH uses only the mutex virtual address as an identifier.
- * For each user mutex, ALMOS-MKH creates a kernel "remote_mutex_t" structure,
- * dynamically allocated in the reference cluster by the remote_mutex_create() function, 
- * and destroyed by the remote_mutex_destroy() function, using RPC if the calling thread
+ * For each user mutex, ALMOS-MKH creates a kernel "remote_mutex_t" structure, allocated
+ * in the user process reference cluster by the remote_mutex_create() function, and 
+ * destroyed by the remote_mutex_destroy() function, using RPC if the calling thread
  * is not running in the reference cluster. 
  *

trunk/kernel/libk/string.h

@@ -49 +49 @@
 /********************************************************************************************
  * This function compares lexicographically the strind s1 and s2.
- * characters are considered unsigned.
+ * Characters are considered unsigned.
  * I does not compare characters after the first NUL character.
  ********************************************************************************************
@@ -61 +61 @@
 /********************************************************************************************
  * This function compares lexicographically the strind s1 and s2.
- * I does not compare than <n> characters and stops after the first NUL character.
+ * I does not compare more than <n> characters and stops after the first NUL character.
  ********************************************************************************************
  * @ s1   : pointer on string.

trunk/kernel/libk/xhtab.h

@@ -32 +32 @@
 
 ///////////////////////////////////////////////////////////////////////////////////////////
-// This file define a generic, embedded, remotely accessible hash table.
+// This file define a generic, embedded, remotely accessible, hash table.
 //
 // It can be accessed by any thread, running in any cluster.
@@ -39 +39 @@
 // For this purpose the set of all registered items is split in several subsets.
 // Each subset is organised as an embedded double linked xlists.
-// - an item is uniquely identified by a <key>, that is a single uint32_t value. 
-// - From the <key> value, the hash table uses an item type specific xhtab_index() 
+// - an item is uniquely identified by a <key>, that is a item specific pointer,
+//   that can be a - for example - a char* defining the item "name".
+// - From the <key> value, the hash table uses an item type specific index_from_key() 
 //   function, to compute an <index> value, defining a subset of registered items.
 // - to discriminate between items that have the same <index>, the hash table makes
-//   an associative search on the key in subset.
+//   an associative search on the key in subset, using the item type specific
+//   item_match_key() function.
 // - Each registered item is a structure, that must contain an embedded xlist_entry,
 //   that is part of the xlist implementing the subset. 
 //
 // For all registered items, a total order is defined by the increasing index values, 
-// and for each index value, by the position in the partial xlist. 
+// and for each index value, by the position in the xlist implementing a subset. 
 // This order is used by the two functions xhtab_get_first() and xhtab_get_next(), that
 // are used to scan all registered items. The two "current_index" and "current_xlist_xp"