Changeset 447

Timestamp:

Jun 19, 2018, 10:05:52 PM (6 years ago)

Author:

alain

Message:

Introduce the chdev_queue_display() function.

Location:

trunk/kernel

Files:

• kern/chdev.c (modified) (2 diffs)
• kern/chdev.h (modified) (1 diff)
• kernel_config.h (modified) (2 diffs)

trunk/kernel/kern/chdev.c

@@ -25 +25 @@
 #include <hal_types.h>
 #include <hal_special.h>
+#include <hal_remote.h>
 #include <hal_irqmask.h>
 #include <printk.h>
@@ -471 +472 @@
 }  // end chdev_dir_display()
 
+///////////////////////////////////////////
+void chdev_queue_display( xptr_t chdev_xp )
+{
+    cxy_t       chdev_cxy;          // chdev cluster
+    chdev_t   * chdev_ptr;          // chdev local pointer
+    xptr_t      root_xp;            // extended pointer on waiting queuue root
+    char        name[16];           // local copie of chdev name
+    xptr_t      iter_xp;            // extended pointer on xlist_t field in waiting thread
+    xptr_t      thread_xp;          // extended pointer on thread registered in queue
+    cxy_t       thread_cxy;         // cluster identifier for waiting thread
+    thread_t  * thread_ptr;         // local pointer on waiting thread
+    trdid_t     trdid;              // waiting thread identifier
+    process_t * process;            // waiting thread process descriptor
+    pid_t       pid;                // waiting thread process identifier
+
+    // get cluster and local pointer on chdev
+    chdev_cxy = GET_CXY( chdev_xp );
+    chdev_ptr = GET_PTR( chdev_xp );
+
+    // get extended pointer on root of requests queue
+    root_xp = hal_remote_lwd( XPTR( chdev_cxy , &chdev_ptr->wait_root ) );
+
+    // get chdev name
+    hal_remote_strcpy( XPTR( local_cxy , name ), XPTR( chdev_cxy , chdev_ptr->name ) );
+
+    // check queue empty
+    if( xlist_is_empty( root_xp ) )
+    {
+        printk("\n***** Waiting queue empty for chdev %s\n", name ); 
+    }
+    else
+    {
+        printk("\n***** Waiting queue for chdev %s\n", name ); 
+
+        // scan the waiting queue
+        XLIST_FOREACH( root_xp , iter_xp )
+        {
+            thread_xp  = XLIST_ELEMENT( iter_xp , thread_t , wait_list );
+            thread_cxy = GET_CXY( thread_xp );
+            thread_ptr = GET_PTR( thread_xp );
+            trdid      = hal_remote_lw ( XPTR( thread_cxy , &thread_ptr->trdid   ) );
+            process    = hal_remote_lpt( XPTR( thread_cxy , &thread_ptr->process ) );
+                        pid        = hal_remote_lw ( XPTR( thread_cxy , &process->pid        ) );
+
+            printk("- trdid %X / pid %X\n", trdid, pid );
+        }
+    }
+}  // end chdev_queue_display()
+

trunk/kernel/kern/chdev.h

@@ -254 +254 @@
 void chdev_dir_display();
 
+/******************************************************************************************
+ * This function displays the list of threads registered in the queue associated
+ * to the chdev identified by the <chdev_xp>. 
+ ******************************************************************************************
+ * # root_xp  : extended pointer
+ *****************************************************************************************/
+void chdev_queue_display( xptr_t chdev_xp );
+
 #endif  /* _CHDEV_H_ */

trunk/kernel/kernel_config.h

@@ -128 +128 @@
 #define DEBUG_SYS_GET_CONFIG           0
 #define DEBUG_SYS_ISATTY               0
-#define DEBUG_SYS_KILL                 1
+#define DEBUG_SYS_KILL                 0
 #define DEBUG_SYS_MMAP                 0
 #define DEBUG_SYS_READ                 2
@@ -154 +154 @@
 #define DEBUG_THREAD_USER_CREATE       0
 #define DEBUG_THREAD_USER_FORK         0
-#define DEBUG_THREAD_BLOCK             15000001
+#define DEBUG_THREAD_BLOCK             0
 
 #define DEBUG_VFS_INODE_CREATE         0