Changeset 445 for trunk/kernel/kern

Timestamp:

May 29, 2018, 9:27:23 AM (7 years ago)

Author:

alain

Message:

Restructure the mini_libc.

Location:

trunk/kernel/kern

Files:

• printk.c (modified) (2 diffs)
• process.c (modified) (3 diffs)
• process.h (modified) (1 diff)
• scheduler.c (modified) (1 diff)

trunk/kernel/kern/printk.c

@@ -30 +30 @@
 #include <chdev.h>
 #include <printk.h>
+#include <shared_syscalls.h>
 
 ///////////////////////////////////////////////////////////////////////////////////
@@ -416 +417 @@
 
         // suicide
-        hal_core_sleep();
+        sys_exit( EXIT_FAILURE );
     }
 }

trunk/kernel/kern/process.c

@@ -401 +401 @@
 uint32_t cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_DESTROY )
-printk("\n[DBG] %s : thread %x enter in cluster %x / pid %x / process %x / cycle %d\n",
-__FUNCTION__ , CURRENT_THREAD , pid , process , cycle );
+printk("\n[DBG] %s : thread %x enter for process %x in cluster %x / cycle %d\n",
+__FUNCTION__ , CURRENT_THREAD , pid , local_cxy , cycle );
 #endif
 
@@ -447 +447 @@
 cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_DESTROY )
-printk("\n[DBG] %s : thread %x exit / destroyed process %x (pid = %x) / cycle %d\n",
-__FUNCTION__ , CURRENT_THREAD , process, pid, cycle );
+printk("\n[DBG] %s : thread %x exit / destroyed process %x in cluster %x / cycle %d\n",
+__FUNCTION__ , CURRENT_THREAD , pid, local_cxy, cycle );
 #endif
 
@@ -1379 +1379 @@
     process_txt_detach( XPTR( local_cxy , old_process ) );
 
-    // request old_thread destruction => old_process destruction
+    // block this old_thread 
     thread_block( XPTR( local_cxy , old_thread ) , THREAD_BLOCKED_GLOBAL );
-    hal_atomic_or( &old_thread->flags , THREAD_FLAG_REQ_DELETE );
+
+    // atomically update old_process descriptor term_state to ask
+    // the parent process (wait() function) to delete this old_thread 
+    hal_atomic_or( &old_process->term_state , PROCESS_TERM_EXIT );
 
     hal_fence();

trunk/kernel/kern/process.h

@@ -535 +535 @@
 /*********************************************************************************************
  * This function detach a process, identified by the <process_xp> argument,
- * from the list of process attached to a given TXT terminal.
+ * from the list of process attached to a given TXT terminal. It transfer the TXT ownership,
+ * if the detached process is the TXT owner.
  * The target process descriptor must be in the owner cluster, but the calling thread can
  * be running in any cluster. 

trunk/kernel/kern/scheduler.c

@@ -248 +248 @@
 uint32_t cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_SCHED_HANDLE_SIGNALS < cycle )
-printk("\n[DBG] %s : thread %x in proces %x on core[%x,%d] deleted / cycle %d\n",
+printk("\n[DBG] %s : thread %x in process %x on core[%x,%d] deleted / cycle %d\n",
 __FUNCTION__ , thread->trdid , process->pid , local_cxy , thread->core->lid , cycle );
 #endif