Changeset 669 for trunk/kernel/kern/core.h

Timestamp:

Nov 19, 2020, 11:44:34 PM (4 years ago)

Author:

alain

Message:

1) Introduce up to 4 command lines arguments in the KSH "load" command.
These arguments are transfered to the user process through the
argc/argv mechanism, using the user space "args" vseg.

2) Introduce the named and anonymous "pipes", for inter-process communication
through the pipe() and mkfifo() syscalls.

3) Introduce the "chat" application to validate the two above mechanisms.

4) Improve printk() and assert() fonctions in printk.c.

File:

• trunk/kernel/kern/core.h (modified) (6 diffs)

trunk/kernel/kern/core.h

@@ -28 +28 @@
 #include <kernel_config.h>
 #include <hal_kernel_types.h>
+#include <busylock.h>
 #include <list.h>
 #include <rpc.h>
@@ -36 +37 @@
 struct thread_s;
 struct chdev_s;
-enum   pic_impl_e;
 
 /****************************************************************************************
@@ -54 +54 @@
         uint32_t            time_stamp;     /*! previous time stamp (read from register)   */
 
+    list_entry_t        alarms_root;    /*! root of list of attached alarms            */
+    busylock_t          alarms_lock;    /*! lock protecting the list of alarms         */
+
         uint32_t            ticks_nr;       /*! number of elapsed ticks                    */
         uint32_t            usage;          /*! cumulated busy_percent (idle / total)      */
@@ -70 +73 @@
  * It makes the association [gid] <=> [lid], as defined in arch_info, via the
  * boot_info_t structure build by the bootloader in each cluster.
- * It allocates memory for the PIC infrastructure specific core extension.
- * It does NOT initialize the <thread_idle> and the <pic_extend> fields, 
- * that must be completed later.
+ * It initializes the core scheduler structures, and the alarms list and lock.
+ * It allocates memory for the PIC infrastructure specific core extension,
+ * but it does NOT initialize the <pic_extend> fields, that must be completed later.
  ***************************************************************************************
  * @ core      : pointer on core descriptor to initialise.
@@ -84 +87 @@
 /***************************************************************************************
  * This function returns the calling core local index (lid), making an associative
- * in the local core_tbl[] array based on the hardwired (gid).
+ * search in the local core_tbl[] array, based on the hardwired (gid).
  ***************************************************************************************
  * @ returns always the lid value.
@@ -113 +116 @@
 /***************************************************************************************
  * This function must be called at each TICK.
- * It updates the  cycles and ticks counter in the calling core descriptor.
- * It handles all pending alarms depending on the ticks counter value.
- * It handles the scheduling, depending on the ticks counter value.
- * It handles the global DQDT update, depending on the ticks counter vakue.
+ * - it updates the ticks counter in the calling core descriptor.
+ * - it checks the registered alarms depending on the ticks counter value.
+ * - it calls the scheduler, depending on the ticks counter value.
  ***************************************************************************************
  * @ core       : pointer on core descriptor.