Changeset 624 for trunk/kernel/syscalls/sys_kill.c

Timestamp:

Mar 12, 2019, 1:37:38 PM (5 years ago)

Author:

alain

Message:

Fix several bugs to use the instruction MMU in kernel mode
in replacement of the instruction address extension register,
and remove the "kentry" segment.

This version is running on the tsar_generic_iob" platform.

One interesting bug: the cp0_ebase defining the kernel entry point
(for interrupts, exceptions and syscalls) must be initialized
early in kernel_init(), because the VFS initialisation done by
kernel_ini() uses RPCs, and RPCs uses Inter-Processor-Interrup.

File:

• trunk/kernel/syscalls/sys_kill.c (modified) (5 diffs)

trunk/kernel/syscalls/sys_kill.c

@@ -74 +74 @@
 tm_start = hal_get_cycles();
 if( DEBUG_SYS_KILL < tm_start )
-printk("\n[%s] thread[%x,%x] enter / process %x / %s / cycle %d\n",
-__FUNCTION__, this->process->pid, this->trdid, pid,
-sig_type_str(sig_id), (uint32_t)tm_start );
+printk("\n[%s] thread[%x,%x] enter : %s to process %x / cycle %d\n",
+__FUNCTION__, this->process->pid, this->trdid,
+sig_type_str(sig_id), pid, (uint32_t)tm_start );
 #endif
 
@@ -86 +86 @@
 #if (DEBUG_SYS_KILL & 1)
 if( DEBUG_SYS_KILL < tm_start )
-printk("\n[%s] thread[%x,%x] get owner process %x in cluster %x\n",
+printk("\n[%s] thread[%x,%x] get target process descriptor %x in owner cluster %x\n",
 __FUNCTION__ , this->process->pid, this->trdid, owner_ptr, owner_cxy );
 #endif
@@ -108 +108 @@
 #if (DEBUG_SYS_KILL & 1)
 if( DEBUG_SYS_KILL < tm_start )
-printk("\n[%x] thread[%x,%x] get parent process %x in cluster %x\n",
+printk("\n[%s] thread[%x,%x] get parent process descriptor %x in cluster %x\n",
 __FUNCTION__ , this->process->pid, this->trdid, parent_ptr, parent_cxy );
 #endif
@@ -128 +128 @@
             process_sigaction( pid , BLOCK_ALL_THREADS );
 
+#if (DEBUG_SYS_KILL & 1)
+if( DEBUG_SYS_KILL < tm_start )
+printk("\n[%s] thread[%x,%x] blocked all threads of process %x\n",
+__FUNCTION__ , this->process->pid, this->trdid, pid );
+#endif
             // atomically update owner process termination state
             hal_remote_atomic_or( XPTR( owner_cxy , &owner_ptr->term_state ) ,
@@ -136 +141 @@
 
             // calling thread deschedules when it is itself a target thread
-            if( this->process->pid == pid ) sched_yield("block itself");
+            if( this->process->pid == pid )
+            {
+
+#if (DEBUG_SYS_KILL & 1)
+if( DEBUG_SYS_KILL < tm_start )
+printk("\n[%s] thread[%x,%x] is a target thread => deschedule\n",
+__FUNCTION__ , this->process->pid, this->trdid );
+#endif
+                sched_yield("block itself");
+            }
 
             break;