Changeset 435 for trunk/kernel/kern/process.h

Timestamp:

Feb 20, 2018, 5:32:17 PM (6 years ago)

Author:

alain

Message:

Fix a bad bug in scheduler...

File:

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

trunk/kernel/kern/process.h

@@ -36 +36 @@
 #include <hal_atomic.h>
 #include <vmm.h>
-#include <signal.h>
 #include <cluster.h>
 #include <vfs.h>
@@ -63 +62 @@
     DELETE_ALL_THREADS   = 33, 
 };
-
-/*********************************************************************************************
- * The termination state is a 32 bits word:
- * - the 8 LSB bits contain the user defined exit status
- * - the 24 other bits contain the flags defined below
- ********************************************************************************************/
-
-#define PROCESS_FLAG_BLOCK 0x100  /*! process received as SIGSTOP signal                    */
-#define PROCESS_FLAG_KILL  0x200  /*! process terminated by a sys_kill()                    */
-#define PROCESS_FLAG_EXIT  0x400  /*! process terminated by a sys_exit()                    */ 
-#define PROCESS_FLAG_WAIT  0x800  /*! parent process executed successfully a sys_wait()     */
 
 /*********************************************************************************************
@@ -291 +279 @@
 
 /*********************************************************************************************
- * This function allows a client thread running in the owner cluster of a process identified
- * by the <process> argument to block, unblock or delete all threads of the target process,
- * depending on the <action_type> argument.  The scenario is the following:
+ * This function allows a client thread running in any cluster to block, unblock or delete 
+ * all threads of a process identified by the <pid> argument, depending on the 
+ * <action_type> argument.  The scenario is the following:
  * - It uses the multicast, non blocking rpc_process_sigaction_client() function to send
  *   parallel requests to all remote clusters containing a process copy. Then it blocks
@@ -305 +293 @@
  * It is used by the sys_kill() & sys_exit() functions to handle the "kill" & "exit" syscalls.
  * It is also used by the process_make_exec() function to handle the "exec" syscall.
- * WARNING : the DELETE and the BLOCK actions are NOT executed on the client thread.
- *********************************************************************************************
- * @ process     : pointer on the process descriptor in owner cluster.
+ * It is also called by the TXT device to execute the ctrl C & ctrl Z commands.
+ * WARNING : the DELETE action is NOT executed on the main thread (thread 0 in owner cluster).
+ *********************************************************************************************
+ * @ pid         : target process identifier.
  * @ action_type : BLOCK_ALL_THREADS / UNBLOCK_ALL_THREADS / DELETE_ALL_THREADS
  ********************************************************************************************/
-void process_sigaction( process_t * process,
+void process_sigaction( pid_t       pid,
                         uint32_t    action_type );
 
@@ -403 +392 @@
                             struct thread_s ** child_thread_ptr );
 
-/*********************************************************************************************
- * This function is called by both the sys_kill() and sys_exit() system calls.
- * It must be executed by an RPC thread running in the target process owner cluster.
- * It uses twice the process_sigaction() function: 
- * - first, to block all target process threads, in all clusters.
- * - second, to delete all target process threads in all clusters.
- * Finally, it synchronizes with the parent process sys_wait() function that MUST be called
- * by the parent process main thread.
- *********************************************************************************************
- * @ process      : pointer on process descriptor in owner cluster.
- * @ is_exit      : true when called by sys_exit() / false when called by sys_kill().
- * @ exit_status  : exit status, when called by sys_exit().
- ********************************************************************************************/
-void process_make_kill( process_t * process,
-                        bool_t      is_exit,
-                        uint32_t    exit_status );
-
 
 /********************   File Management Operations   ****************************************/
@@ -573 +545 @@
 void process_txt_reset_ownership( xptr_t process_xp );
 
+/*********************************************************************************************
+ * This function returns the terminal owner process (foreground process)
+ * for a given TXT terminal identified by its <channel> index.
+ *********************************************************************************************
+ * @ channel  : TXT terminal channel.
+ * @ return owner process identifier.
+ ********************************************************************************************/
+pid_t process_get_txt_owner( uint32_t channel );
+
+/*********************************************************************************************
+ * This debug function diplays on the kernel terminal the list of processes attached
+ * to a given terminal identified by the <txt_id> argument.
+ *********************************************************************************************
+ * @ txt_id  : TXT terminal channel.
+ ********************************************************************************************/
+void process_txt_display( uint32_t txt_id );
+
+
 #endif  /* _PROCESS_H_ */