Changeset 469 for trunk/kernel/kern/process.c

Timestamp:

Aug 20, 2018, 1:04:16 PM (6 years ago)

Author:

alain

Message:

1) Introduce the libsemaphore library.
2) Introduce a small libmath library, required by the "fft" application..
3) Introduce the multithreaded "fft" application.
4) Fix a bad synchronisation bug in the Copy-On-Write mechanism.

File:

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

trunk/kernel/kern/process.c

@@ -1163 +1163 @@
     }
 
-#if DEBUG_PROCESS_MAKE_FORK
+#if( DEBUG_PROCESS_MAKE_FORK & 1 )
 cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_MAKE_FORK < cycle )
@@ -1240 +1240 @@
     "main thread must have LTID == 0\n" );
 
-#if( DEBUG_PROCESS_MAKE_FORK & 1 )
+//#if( DEBUG_PROCESS_MAKE_FORK & 1 )
+#if DEBUG_PROCESS_MAKE_FORK 
 cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_MAKE_FORK < cycle )
-printk("\n[DBG] %s : thread %x in process %x created main thread %x on core[%x,%d] / cycle %d\n", 
-__FUNCTION__, CURRENT_THREAD->trdid, CURRENT_THREAD->process->pid,
-thread, local_cxy, thread->core->lid, cycle );
+printk("\n[DBG] %s : thread %x in process %x created main thread %x / cycle %d\n", 
+__FUNCTION__, CURRENT_THREAD->trdid, CURRENT_THREAD->process->pid, thread, cycle );
 #endif
 
@@ -1342 +1342 @@
 
 #if (DEBUG_PROCESS_MAKE_EXEC & 1)
+cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_MAKE_EXEC < cycle )
-printk("\n[DBG] %s : open file <%s>\n", __FUNCTION__, path );
+printk("\n[DBG] %s : thread %x in process %x opened file <%s> / cycle %d\n",
+__FUNCTION__, thread->trdid, pid, path, cycle );
 #endif
 
@@ -1349 +1351 @@
     process_sigaction( pid , DELETE_ALL_THREADS );
 
+#if (DEBUG_PROCESS_MAKE_EXEC & 1)
+cycle = (uint32_t)hal_get_cycles();
+if( DEBUG_PROCESS_MAKE_EXEC < cycle )
+printk("\n[DBG] %s : thread %x in process %x deleted all threads / cycle %d\n",
+__FUNCTION__, thread->trdid, pid, cycle );
+#endif
+
     // reset local process VMM
     vmm_destroy( process );
@@ -1355 +1364 @@
 cycle = (uint32_t)hal_get_cycles();
 if( DEBUG_PROCESS_MAKE_EXEC < cycle )
-printk("\n[DBG] %s : thread %x in process %x / reset VMM / cycle %d\n",
+printk("\n[DBG] %s : thread %x in process %x reset VMM / cycle %d\n",
 __FUNCTION__, thread->trdid, pid, cycle );
 #endif
@@ -1400 +1409 @@
     if( error )
     {
-        printk("\n[ERROR] in %s : cannot reset main thread for %s\n", __FUNCTION__ , path );
+        printk("\n[ERROR] in %s : cannot update main thread for %s\n", __FUNCTION__ , path );
         vfs_close( file_xp , file_id );
         // FIXME restore old process VMM