Changeset 651 for trunk/kernel/libk/user_dir.h

Timestamp:

Nov 14, 2019, 11:50:09 AM (4 years ago)

Author:

alain

Message:

1) Improve the VMM MMAP allocator: implement the "buddy" algorithm
to allocate only aligned blocks.
2) fix a bug in the pthread_join() / pthread_exit() mmechanism.

File:

• trunk/kernel/libk/user_dir.h (modified) (2 diffs)

trunk/kernel/libk/user_dir.h

@@ -37 +37 @@
  * - An user process open a directory by calling the "opendir()" syscall.
  *   The user_dir_create() function allocates physical memory to create in the cluster
- *   containing the target inode one or several physical pages to implement an array 
- *   of "dirent", mapped in the user process space as an ANON vseg. It allocates also
- *   an "user_dir_t" descriptor structure defined below, registered in the xlist rooted 
- *   in the reference user process descriptor. 
+ *   containing the directory inode one or several physical pages to implement an array 
+ *   of "dirent". This array is mapped in the user process space as an ANON vseg.
+ *   It allocates also an "user_dir_t" descriptor structure defined below, registered
+ *   in the xlist rooted in the reference user process descriptor. 
  * - This "user_dir_t" structure contains the total number of "entries", the "current" 
  *   pointer used by the readdir() syscall, and an "ident" field, that is actually
@@ -104 +104 @@
  * structures rooted in the reference process descriptor, release all memory
  * allocated for the user_dir_t struct in the directory inode cluster, including 
- * the dirent array, and delete all ANON vseg copies in all process VMM copies,
+ * the dirent array, and delete the ANON vseg copies in all process VMM copies,
  * using parallel RPCs.
  * It must be executed by a thread running in the cluster containing the target inode.