Changeset 459 for trunk/kernel/syscalls/sys_open.c

Timestamp:

Aug 13, 2018, 1:43:20 PM (5 years ago)

Author:

alain

Message:

Introduce the math library, to support the floating point
data used by the multi-thread fft application.
Fix several bugs regarding the FPU context save/restore.
Introduce support for the %f format in printf.

File:

• trunk/kernel/syscalls/sys_open.c (modified) (4 diffs)

trunk/kernel/syscalls/sys_open.c

@@ -46 +46 @@
     process_t    * process  = this->process;
 
+#if DEBUG_SYS_OPEN
+uint32_t     tm_start;
+uint32_t     tm_end;
+tm_start = hal_get_cycles();
+#endif
+ 
     // check fd_array not full
     if( process_fd_array_full() )
@@ -66 +72 @@
     hal_strcpy_from_uspace( kbuf , pathname , CONFIG_VFS_MAX_PATH_LENGTH );
 
+#if DEBUG_SYS_OPEN
+if( DEBUG_SYS_OPEN < tm_start )
+printk("\n[DBG] %s : thread %x in process %x enter / path %s / flags %x / cycle %d\n",
+__FUNCTION__, this->trdid, process->pid, kbuf, flags, (uint32_t)tm_start );
+#endif
+ 
     // get cluster and local pointer on reference process
     xptr_t      ref_xp  = process->ref_xp;
@@ -87 +99 @@
     if( error )
     {
-        printk("\n[ERROR] in %s : cannot create file descriptor\n", __FUNCTION__ );
+        printk("\n[ERROR] in %s : cannot create file descriptor for %s\n",
+        __FUNCTION__ , kbuf );
         this->errno = ENFILE;
         return -1;
@@ -97 +110 @@
     remote_spinlock_unlock( XPTR( local_cxy , &process->fd_array.lock ) );
 
+    hal_fence();
+
+#if DEBUG_SYS_OPEN
+tm_end = hal_get_cycles();
+if( DEBUG_SYS_OPEN < tm_start )
+printk("\n[DBG] %s : thread %x in process %x exit / cost %d / cycle %d\n",
+__FUNCTION__, this->trdid, process->pid, (uint32_t)(tm_end - tm_start), (uint32_t)tm_start );
+#endif
+ 
     return file_id;
 }