Changeset 670 for trunk/kernel/syscalls/sys_place_fork.c

Timestamp:

Nov 19, 2020, 11:45:52 PM (4 years ago)

Author:

alain

Message:

1) Introduce up to 4 command lines arguments in the KSH "load" command.
These arguments are transfered to the user process through the
argc/argv mechanism, using the user space "args" vseg.

2) Introduce the named and anonymous "pipes", for inter-process communication
through the pipe() and mkfifo() syscalls.

3) Introduce the "chat" application to validate the two above mechanisms.

4) Improve printk() and assert() fonctions in printk.c.

File:

• trunk/kernel/syscalls/sys_place_fork.c (modified) (2 diffs)

trunk/kernel/syscalls/sys_place_fork.c

@@ -38 +38 @@
 {
     thread_t  * this    = CURRENT_THREAD;
-    process_t * process = this->process;
 
-#if (DEBUG_SYS_PLACE_FORK || CONFIG_INSTRUMENTATION_SYSCALLS)
-uint64_t     tm_start = hal_get_cycles();
+#if DEBUG_SYS_PLACE_FORK || DEBUG_SYSCALLS_ERROR || CONFIG_INSTRUMENTATION_SYSCALLS
+uint64_t    tm_start = hal_get_cycles();
+process_t * process  = this->process;
 #endif
 
@@ -55 +55 @@
         
 #if DEBUG_SYSCALLS_ERROR
+if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start );
 printk("\n[ERROR] in %s : thread[%x,‰x] / illegal cxy argument %x\n",
 __FUNCTION__ , process->pid , this->trdid , cxy );