| 1 | /*
|
|---|
| 2 | * sys_trace.c - show kernel active processes and threads
|
|---|
| 3 | *
|
|---|
| 4 | * Author Alain Greiner (c) (2016,2017)
|
|---|
| 5 | *
|
|---|
| 6 | * Copyright (c) UPMC Sorbonne Universites
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of ALMOS-MKH.
|
|---|
| 9 | *
|
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it
|
|---|
| 11 | * under the terms of the GNU General Public License as published by
|
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License.
|
|---|
| 13 | *
|
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but
|
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 17 | * General Public License for more details.
|
|---|
| 18 | *
|
|---|
| 19 | * You should have received a copy of the GNU General Public License
|
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation,
|
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 22 | */
|
|---|
| 23 |
|
|---|
| 24 | #include <hal_types.h>
|
|---|
| 25 | #include <hal_special.h>
|
|---|
| 26 | #include <printk.h>
|
|---|
| 27 | #include <thread.h>
|
|---|
| 28 | #include <errno.h>
|
|---|
| 29 | #include <syscalls.h>
|
|---|
| 30 |
|
|---|
| 31 | //////////////////////////////////
|
|---|
| 32 | int sys_trace( uint32_t operation,
|
|---|
| 33 | pid_t pid,
|
|---|
| 34 | uint32_t trdid )
|
|---|
| 35 | {
|
|---|
| 36 | // get extended pointer on target thread
|
|---|
| 37 | xptr_t thread_xp = thread_get_xptr( pid , trdid );
|
|---|
| 38 |
|
|---|
| 39 | if( thread_xp == XPTR_NULL )
|
|---|
| 40 | {
|
|---|
| 41 | printk("\n[ERROR] in %s : undefined thread for PID = %x / TRDID = %x\n",
|
|---|
| 42 | __FUNCTION__ , pid , trdid );
|
|---|
| 43 | CURRENT_THREAD->errno = EINVAL;
|
|---|
| 44 | return -1;
|
|---|
| 45 | }
|
|---|
| 46 |
|
|---|
| 47 | if( operation == TRACE_OFF )
|
|---|
| 48 | {
|
|---|
| 49 | // desactivate thread trace TODO
|
|---|
| 50 |
|
|---|
| 51 | printk("\n[DBG] %s : trace OFF for thread %x in process %x\n",
|
|---|
| 52 | __FUNCTION__ , trdid , pid );
|
|---|
| 53 | }
|
|---|
| 54 | else if( operation == TRACE_ON )
|
|---|
| 55 | {
|
|---|
| 56 | // activate thread trace TODO
|
|---|
| 57 |
|
|---|
| 58 | printk("\n[DBG] %s : trace ON for thread %x in process %x\n",
|
|---|
| 59 | __FUNCTION__ , trdid , pid );
|
|---|
| 60 | }
|
|---|
| 61 | else
|
|---|
| 62 | {
|
|---|
| 63 | printk("\n[ERROR] in %s : undefined operation\n", __FUNCTION__ );
|
|---|
| 64 | CURRENT_THREAD->errno = EINVAL;
|
|---|
| 65 | return -1;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | hal_fence();
|
|---|
| 69 |
|
|---|
| 70 | return 0;
|
|---|
| 71 |
|
|---|
| 72 | } // end sys_trace()
|
|---|
