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

Timestamp:

Nov 19, 2020, 11:44:34 PM (3 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/thread.h (modified) (6 diffs)

trunk/kernel/kern/thread.h

@@ -37 +37 @@
 #include <core.h>
 #include <chdev.h>
+#include <alarm.h>
 #include <cluster.h>
 #include <process.h>
@@ -95 +96 @@
 #define THREAD_BLOCKED_LOCK      0x1000  /*! ANY : wait queuelock or rwlock           */
 #define THREAD_BLOCKED_CLIENT    0x2000  /*! DEV : wait clients queue non empty       */
+#define THREAD_BLOCKED_ALARM     0x4000  /*! ANY : wait a timer based alarm           */
 
 /***************************************************************************************
@@ -160 +162 @@
         vseg_t            * user_stack_vseg; /*! local pointer on user stack vseg         */
 
-    void              * entry_func;      /*! pointer on entry function                */
-    void              * entry_args;      /*! pointer on entry function arguments      */
-    uint32_t            main_argc;       /*! main thread number of arguments          */
-    char             ** main_argv;       /*! main thread array of strings arguments   */
+    void              * entry_func;      /*! pointer on thread entry function         */
+    void              * entry_args;      /*! pthread     : pointer on arguments       */
 
     uint32_t            flags;           /*! bit vector of flags                      */
@@ -177 +177 @@
 
     chdev_t           * chdev;           /*! chdev pointer (for a DEV thread only)    */
+
+    alarm_t             alarm;           /*! embedded timer based alarm               */
 
     reg_t               save_sr;         /*! used by sched_yield() function           */
@@ -269 +271 @@
 /***************************************************************************************
  * This function is called by the process_make_exec() function to re-initialise the
- * calling thread descriptor, that will become the new process main thread.
- * It must be called by the main thread of the calling process.
+ * calling thread descriptor, that will become the new process main thread, from
+ * the process descriptor, and from the <args_nr> & <args_base> arguments.
  * - The calling thread TRDID is not modified.
  * - The kernel stack (currently in use) is not modified.  
- * - A new user stack vseg is created and initialised.
- * - The function calls the hal_cpu_context_exec() to re-initialize the CPU context
- *   and the uzone registered in kernel stack, an jump to user code.  
- ***************************************************************************************
- * @ entry_func : main thread entry point.
- * @ argc       : number of main thread arguments.
- * @ argv       : array of pointers on stringarguments.
- * @ returns 0 if success / returns ENOMEM if error.
- **************************************************************************************/
-error_t thread_user_exec( void     * entry_func,
-                          uint32_t   argc,
-                          char    ** argv);
+ * - It calls the hal_cpu_context_init() to re-initialize the thread CPU context.
+ * - It calls the hal_do_cpu_restore() to force execution of the new user code.
+ ***************************************************************************************
+ * @ argc   : actual number of main thread arguments.
+ * @ argv   : user space pointer on array of pointers on arguments.
+ **************************************************************************************/
+void thread_user_exec( uint32_t  argc,
+                       intptr_t  argv );
 
 /***************************************************************************************
@@ -397 +395 @@
  * @ is_forced   : the deletion does not depends on the attached mode. 
  **************************************************************************************/
-void thread_delete( xptr_t  thread_xp,
-                    bool_t  is_forced );
+void thread_delete_request( xptr_t  thread_xp,
+                            bool_t  is_forced );
 
 /***************************************************************************************