Changeset 469 for trunk/kernel/syscalls/sys_write.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/syscalls/sys_write.c (modified) (3 diffs)

trunk/kernel/syscalls/sys_write.c

@@ -61 +61 @@
     reg_t        save_sr;         // required to enable IRQs during syscall
 
-#if (DEBUG_SYS_WRITE & 1)
-enter_sys_write = (uint32_t)tm_start;
-#endif
-
         thread_t   * this = CURRENT_THREAD;
         process_t  * process = this->process;
@@ -77 +73 @@
 #endif
  
+#if (DEBUG_SYS_WRITE & 1)
+enter_sys_write = (uint32_t)tm_start;
+#endif
+
     // check file_id argument
         if( file_id >= CONFIG_PROCESS_FILE_MAX_NR )
@@ -195 +195 @@
 tm_end = hal_get_cycles();
 if( DEBUG_SYS_WRITE < tm_end )
-printk("\n[DBG] %s : thread %x in process %x exit / cycle %d\n"
-"nbytes %d / file_id %d / cost %d\n",
-__FUNCTION__, this->trdid, process->pid, (uint32_t)tm_start,
-nbytes, file_id , (uint32_t)(tm_end - tm_start) );
+printk("\n[DBG] %s : thread %x in process %x exit / cycle %d / cost %d\n",
+__FUNCTION__, this->trdid, process->pid, (uint32_t)tm_start, (uint32_t)(tm_end - tm_start) );
 #endif