| 1 | /* |
|---|
| 2 | * signal.c - signal-management related operations implementation |
|---|
| 3 | * |
|---|
| 4 | * Author Ghassan Almaless (2008,2009,2010,2011,2012) |
|---|
| 5 | * Mohamed Lamine Karaoui (2015) |
|---|
| 6 | * Alain Greiner (2016,2017) |
|---|
| 7 | * |
|---|
| 8 | * Copyright (c) UPMC Sorbonne Universites |
|---|
| 9 | * |
|---|
| 10 | * This file is part of ALMOS-MKH. |
|---|
| 11 | * |
|---|
| 12 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
|---|
| 13 | * under the terms of the GNU General Public License as published by |
|---|
| 14 | * the Free Software Foundation; version 2.0 of the License. |
|---|
| 15 | * |
|---|
| 16 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
|---|
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 19 | * General Public License for more details. |
|---|
| 20 | * |
|---|
| 21 | * You should have received a copy of the GNU General Public License |
|---|
| 22 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
|---|
| 23 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
|---|
| 24 | */ |
|---|
| 25 | |
|---|
| 26 | #include <hal_types.h> |
|---|
| 27 | #include <printk.h> |
|---|
| 28 | #include <signal.h> |
|---|
| 29 | |
|---|
| 30 | /* |
|---|
| 31 | |
|---|
| 32 | SIGNAL_HANDLER(kill_sigaction) |
|---|
| 33 | { |
|---|
| 34 | thread_s * this = CURRENT_THREAD; |
|---|
| 35 | |
|---|
| 36 | printk("\n[DBG] %s : threadReceived signal %d, pid %d, tid %x, core %d [ KILLED ]\n", |
|---|
| 37 | sig, |
|---|
| 38 | this->process->pid, |
|---|
| 39 | this, |
|---|
| 40 | cpu_get_id()); |
|---|
| 41 | |
|---|
| 42 | sys_thread_exit((void*)EINTR); |
|---|
| 43 | } |
|---|
| 44 | |
|---|
| 45 | /////////////////////////////////////////////// |
|---|
| 46 | void signal_manager_init( process_t * process ) |
|---|
| 47 | { |
|---|
| 48 | memset(&process->sig_mgr, 0, sizeof(process->sig_mgr)); |
|---|
| 49 | process->sig_mgr.sigactions[SIGCHLD] = SIG_IGNORE; |
|---|
| 50 | process->sig_mgr.sigactions[SIGURG] = SIG_IGNORE; |
|---|
| 51 | } |
|---|
| 52 | |
|---|
| 53 | |
|---|
| 54 | ///////////////////////////////////// |
|---|
| 55 | void signal_notify( thread_t * this ) |
|---|
| 56 | { |
|---|
| 57 | uint32_t sig_state; |
|---|
| 58 | uint32_t sig; |
|---|
| 59 | sig_mgr_t * sig_mgr; |
|---|
| 60 | uint32_t irq_state; |
|---|
| 61 | |
|---|
| 62 | sig_state = this->signals; |
|---|
| 63 | sig = 0; |
|---|
| 64 | |
|---|
| 65 | while((sig_state != 0) && ((sig_state & 0x1) == 0) && (sig < SIG_NR)) |
|---|
| 66 | { |
|---|
| 67 | sig ++; |
|---|
| 68 | sig_state >>= 1; |
|---|
| 69 | } |
|---|
| 70 | |
|---|
| 71 | if(sig) |
|---|
| 72 | { |
|---|
| 73 | cpu_disable_all_irq(&irq_state); |
|---|
| 74 | |
|---|
| 75 | if(thread_isSignaled(this)) |
|---|
| 76 | { |
|---|
| 77 | cpu_restore_irq(irq_state); |
|---|
| 78 | return; |
|---|
| 79 | } |
|---|
| 80 | |
|---|
| 81 | thread_set_signaled(this); |
|---|
| 82 | cpu_restore_irq(irq_state); |
|---|
| 83 | |
|---|
| 84 | spinlock_lock(&this->lock); |
|---|
| 85 | this->info.sig_state &= ~(1 << sig); |
|---|
| 86 | spinlock_unlock(&this->lock); |
|---|
| 87 | |
|---|
| 88 | sig_mgr = &this->process->sig_mgr; |
|---|
| 89 | |
|---|
| 90 | if(sig_mgr->sigactions[sig] == SIG_IGNORE) |
|---|
| 91 | return; |
|---|
| 92 | |
|---|
| 93 | if(sig_mgr->sigactions[sig] == SIG_DEFAULT) |
|---|
| 94 | kill_sigaction(sig); |
|---|
| 95 | |
|---|
| 96 | cpu_signal_notify(this, sig_mgr->sigactions[sig], sig); |
|---|
| 97 | } |
|---|
| 98 | } |
|---|
| 99 | */ |
|---|
