| [642] | 1 | /* |
|---|
| 2 | * sys_get_thread_info.c - get calling thread info. |
|---|
| 3 | * |
|---|
| 4 | * Author Alain Greiner (2016,2017,2018,2019) |
|---|
| 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_kernel_types.h> |
|---|
| 25 | #include <shared_almos.h> |
|---|
| 26 | #include <hal_uspace.h> |
|---|
| 27 | #include <hal_vmm.h> |
|---|
| 28 | #include <hal_special.h> |
|---|
| 29 | #include <errno.h> |
|---|
| 30 | #include <core.h> |
|---|
| 31 | #include <thread.h> |
|---|
| 32 | #include <process.h> |
|---|
| 33 | #include <vmm.h> |
|---|
| 34 | #include <printk.h> |
|---|
| 35 | |
|---|
| 36 | #include <syscalls.h> |
|---|
| 37 | |
|---|
| 38 | /////////////////////////////////////////////// |
|---|
| 39 | int sys_get_thread_info( thread_info_t * info ) |
|---|
| 40 | { |
|---|
| 41 | error_t error; |
|---|
| 42 | vseg_t * vseg; |
|---|
| 43 | |
|---|
| 44 | thread_t * this = CURRENT_THREAD; |
|---|
| 45 | process_t * process = this->process; |
|---|
| 46 | |
|---|
| 47 | #if (DEBUG_SYS_GET_THREAD_INFO || CONFIG_INSTRUMENTATION_SYSCALLS) |
|---|
| 48 | uint64_t tm_start = hal_get_cycles(); |
|---|
| 49 | #endif |
|---|
| 50 | |
|---|
| 51 | // check buffer in user space |
|---|
| 52 | error = vmm_get_vseg( process , (intptr_t)info , &vseg ); |
|---|
| 53 | |
|---|
| 54 | if( error ) |
|---|
| 55 | { |
|---|
| 56 | |
|---|
| 57 | #if DEBUG_SYSCALLS_ERROR |
|---|
| 58 | printk("\n[ERROR] in %s : user buffer unmapped %x / thread %x / process %x\n", |
|---|
| 59 | __FUNCTION__ , (intptr_t)info , this->trdid , process->pid ); |
|---|
| 60 | #endif |
|---|
| 61 | this->errno = EFAULT; |
|---|
| 62 | return -1; |
|---|
| 63 | } |
|---|
| 64 | |
|---|
| 65 | // copy thread_info_t structure to user space |
|---|
| 66 | hal_copy_to_uspace( info, |
|---|
| 67 | XPTR( local_cxy , &this->info), |
|---|
| 68 | sizeof(thread_info_t) ); |
|---|
| 69 | |
|---|
| 70 | #if (DEBUG_SYS_GET_THREAD_INFO || CONFIG_INSTRUMENTATION_SYSCALLS) |
|---|
| 71 | uint64_t tm_end = hal_get_cycles(); |
|---|
| 72 | #endif |
|---|
| 73 | |
|---|
| 74 | #if DEBUG_SYS_GET_THREAD_INFO |
|---|
| 75 | if( DEBUG_SYS_GET_THREAD_INFO < tm_end ) |
|---|
| 76 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n", |
|---|
| 77 | __FUNCTION__ , process->pid, this->trdid, (uint32_t)tm_end ); |
|---|
| 78 | #endif |
|---|
| 79 | |
|---|
| 80 | #if CONFIG_INSTRUMENTATION_SYSCALLS |
|---|
| 81 | hal_atomic_add( &syscalls_cumul_cost[SYS_GET_THREAD_INFO] , tm_end - tm_start ); |
|---|
| 82 | hal_atomic_add( &syscalls_occurences[SYS_GET_THREAD_INFO] , 1 ); |
|---|
| 83 | #endif |
|---|
| 84 | |
|---|
| 85 | return 0; |
|---|
| 86 | |
|---|
| 87 | } // end sys_get_cycle() |
|---|
