Changeset 567 for trunk/kernel/mm/vmm.h

Timestamp:

Oct 5, 2018, 12:01:52 AM (6 years ago)

Author:

alain

Message:

Complete restructuration of kernel locks.

File:

• trunk/kernel/mm/vmm.h (modified) (6 diffs)

trunk/kernel/mm/vmm.h

@@ -30 +30 @@
 #include <bits.h>
 #include <list.h>
-#include <spinlock.h>
+#include <queuelock.h>
 #include <hal_gpt.h>
 #include <vseg.h>
@@ -54 +54 @@
 typedef struct stack_mgr_s
 {
-    spinlock_t     lock;               /*! lock protecting STACK allocator                  */
+    busylock_t     lock;               /*! lock protecting STACK allocator                  */
     vpn_t          vpn_base;           /*! first page of STACK zone                         */
     bitmap_t       bitmap;             /*! bit bector of allocated stacks                   */
@@ -79 +79 @@
 typedef struct mmap_mgr_s
 {
-    spinlock_t     lock;               /*! lock protecting MMAP allocator                   */
+    busylock_t     lock;               /*! lock protecting MMAP allocator                   */
     vpn_t          vpn_base;           /*! first page of MMAP zone                          */
     vpn_t          vpn_size;           /*! number of pages in MMAP zone                     */
@@ -90 +90 @@
  * This structure defines the Virtual Memory Manager for a given process in a given cluster.
  * This local VMM provides four main services:
- * 1) It registers all vsegs in the local copy of the vseg list (VSL).
- * 2) It contains the local copy of the generic page table (GPT).
+ * 1) It contains the local copy of vseg list (VSL), only complete in referrence.
+ * 2) It contains the local copy of the generic page table (GPT), only complete in reference.
  * 3) The stack manager dynamically allocates virtual memory space for the STACK vsegs.
  * 4) The mmap manager dynamically allocates virtual memory for the (FILE/ANON/REMOTE) vsegs.
@@ -105 +105 @@
 typedef struct vmm_s
 {
-        remote_rwlock_t  vsegs_lock;         /*! lock protecting the vsegs list                 */
+        remote_rwlock_t  vsegs_lock;         /*! lock protecting the local VSL                  */
         xlist_entry_t    vsegs_root;         /*! VSL root (VSL only complete in reference)      */
         uint32_t         vsegs_nr;           /*! total number of local vsegs                    */
@@ -153 +153 @@
 void vmm_display( struct process_s * process,
                   bool_t             mapping );
+
+/*******************************************************************************************
+ * This function adds a vseg descriptor in the VSL of a given VMM,
+ * and updates the vmm field in the vseg descriptor.
+ * It takes the lock protecting VSL.
+ *******************************************************************************************
+ * @ vmm       : pointer on the VMM
+ * @ vseg      : pointer on the vseg descriptor
+ ******************************************************************************************/
+void vmm_vseg_attach( struct vmm_s  * vmm,
+                      vseg_t        * vseg );
+
+/*******************************************************************************************
+ * This function removes a vseg descriptor from the set of vsegs controlled by a given VMM,
+ * and updates the vmm field in the vseg descriptor. No memory is released.
+ * It takes the lock protecting VSL.
+ *******************************************************************************************
+ * @ vmm       : pointer on the VMM
+ * @ vseg      : pointer on the vseg descriptor
+ ******************************************************************************************/
+void vmm_vseg_detach( struct vmm_s  * vmm,
+                      vseg_t        * vseg );
 
 /*********************************************************************************************