Changeset 709 for soft/giet_vm/giet_kernel/exc_handler.c

Timestamp:

Oct 1, 2015, 4:20:46 PM (9 years ago)

Author:

alain

Message:

Major release: Change the task model to implement the POSIX threads API.

• The shell "exec" and "kill" commands can be used to activate/de-activate the applications.
• The "pause", "resume", and "context" commands can be used to stop, restart, a single thtead or to display the thread context.

This version has been tested on the following multi-threaded applications,
that have been modified to use the POSIX threads:

• classif
• convol
• transpose
• gameoflife
• raycast

File:

• soft/giet_vm/giet_kernel/exc_handler.c (modified) (2 diffs)

soft/giet_vm/giet_kernel/exc_handler.c

@@ -61 +61 @@
     unsigned int x          = cluster_xy >> Y_WIDTH;
     unsigned int y          = cluster_xy & ((1<<Y_WIDTH)-1);
-    unsigned int lpid       = gpid & ((1<<P_WIDTH)-1);
+    unsigned int p          = gpid & ((1<<P_WIDTH)-1);
+    unsigned int trdid      = _get_thread_trdid();
+    unsigned int ltid       = _get_thread_ltid();
 
-    unsigned int task       = _get_context_slot(CTX_LTID_ID);
-
+    static_scheduler_t*  psched = (static_scheduler_t*)_get_sched();
 
     const char * mips32_exc_str[] = { "strange unknown cause  ",
@@ -74 +75 @@
                                       "reserved instruction   ",
                                       "illegal coproc access  ",
-                                      "arithmetic overflow    "};
+                                      "arithmetic overflow    " };
 
-    _printf("\n[GIET] Exception for task %d on processor[%d,%d,%d] at cycle %d\n"
+    _printf("\n[GIET] Exception for thread %x on processor[%d,%d,%d] at cycle %d\n"
             " - type      : %s\n"
             " - EPC       : %x\n"
             " - BVAR      : %x\n"
-            "...Task desactivated\n",
-            task, x, y, lpid, _get_proctime(),
+            "...Thread desactivated\n",
+            trdid , x , y , p , _get_proctime(),
             mips32_exc_str[type], _get_epc(), _get_bvar() );
 
-    // goes to sleeping state
-    _set_context_slot( CTX_NORUN_ID , 1 );
+    // register KILL signal
+    _atomic_or( &psched->context[ltid].slot[CTX_SIGS_ID] , SIGS_MASK_KILL );
 
-    // deschedule 
+    // deschedule calling thread
     unsigned int save_sr;  
     _it_disable( &save_sr );