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