[c81ebf9] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // signal.c -- |
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| 8 | // |
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| 9 | // Author : Thierry Delisle |
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| 10 | // Created On : Mon Jun 5 14:20:42 2017 |
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[6b0b624] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Fri Jul 21 22:36:05 2017 |
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| 13 | // Update Count : 2 |
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[c81ebf9] | 14 | // |
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| 15 | |
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| 16 | #include "preemption.h" |
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| 17 | |
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| 18 | extern "C" { |
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[82ff5845] | 19 | #include <errno.h> |
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[1c273d0] | 20 | #include <execinfo.h> |
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[4e6fb8e] | 21 | #define __USE_GNU |
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[c81ebf9] | 22 | #include <signal.h> |
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[4e6fb8e] | 23 | #undef __USE_GNU |
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[82ff5845] | 24 | #include <stdio.h> |
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| 25 | #include <string.h> |
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| 26 | #include <unistd.h> |
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[c81ebf9] | 27 | } |
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| 28 | |
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[1c273d0] | 29 | |
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| 30 | #ifdef __USE_STREAM__ |
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| 31 | #include "fstream" |
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| 32 | #endif |
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[82ff5845] | 33 | |
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[969b3fe] | 34 | //TODO move to defaults |
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[82ff5845] | 35 | #define __CFA_DEFAULT_PREEMPTION__ 10000 |
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[c81ebf9] | 36 | |
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[969b3fe] | 37 | //TODO move to defaults |
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[c81ebf9] | 38 | __attribute__((weak)) unsigned int default_preemption() { |
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| 39 | return __CFA_DEFAULT_PREEMPTION__; |
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| 40 | } |
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| 41 | |
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[969b3fe] | 42 | // Short hands for signal context information |
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[82ff5845] | 43 | #define __CFA_SIGCXT__ ucontext_t * |
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| 44 | #define __CFA_SIGPARMS__ __attribute__((unused)) int sig, __attribute__((unused)) siginfo_t *sfp, __attribute__((unused)) __CFA_SIGCXT__ cxt |
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| 45 | |
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[969b3fe] | 46 | // FwdDeclarations : timeout handlers |
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[c81ebf9] | 47 | static void preempt( processor * this ); |
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| 48 | static void timeout( thread_desc * this ); |
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| 49 | |
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[969b3fe] | 50 | // FwdDeclarations : Signal handlers |
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[82ff5845] | 51 | void sigHandler_ctxSwitch( __CFA_SIGPARMS__ ); |
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[1c273d0] | 52 | void sigHandler_segv ( __CFA_SIGPARMS__ ); |
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| 53 | void sigHandler_abort ( __CFA_SIGPARMS__ ); |
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[82ff5845] | 54 | |
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[969b3fe] | 55 | // FwdDeclarations : sigaction wrapper |
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[82ff5845] | 56 | static void __kernel_sigaction( int sig, void (*handler)(__CFA_SIGPARMS__), int flags ); |
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[cd17862] | 57 | |
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[969b3fe] | 58 | // FwdDeclarations : alarm thread main |
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| 59 | void * alarm_loop( __attribute__((unused)) void * args ); |
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| 60 | |
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| 61 | // Machine specific register name |
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[cd17862] | 62 | #ifdef __x86_64__ |
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| 63 | #define CFA_REG_IP REG_RIP |
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| 64 | #else |
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| 65 | #define CFA_REG_IP REG_EIP |
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| 66 | #endif |
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| 67 | |
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[969b3fe] | 68 | KERNEL_STORAGE(event_kernel_t, event_kernel); // private storage for event kernel |
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| 69 | event_kernel_t * event_kernel; // kernel public handle to even kernel |
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| 70 | static pthread_t alarm_thread; // pthread handle to alarm thread |
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| 71 | |
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[9236060] | 72 | void ?{}(event_kernel_t & this) { |
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| 73 | (this.alarms){}; |
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| 74 | (this.lock){}; |
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[969b3fe] | 75 | } |
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[82ff5845] | 76 | |
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[c81ebf9] | 77 | //============================================================================================= |
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| 78 | // Kernel Preemption logic |
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| 79 | //============================================================================================= |
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| 80 | |
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[969b3fe] | 81 | // Get next expired node |
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| 82 | static inline alarm_node_t * get_expired( alarm_list_t * alarms, __cfa_time_t currtime ) { |
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| 83 | if( !alarms->head ) return NULL; // If no alarms return null |
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| 84 | if( alarms->head->alarm >= currtime ) return NULL; // If alarms head not expired return null |
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| 85 | return pop(alarms); // Otherwise just pop head |
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| 86 | } |
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| 87 | |
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| 88 | // Tick one frame of the Discrete Event Simulation for alarms |
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[c81ebf9] | 89 | void tick_preemption() { |
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[969b3fe] | 90 | alarm_node_t * node = NULL; // Used in the while loop but cannot be declared in the while condition |
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| 91 | alarm_list_t * alarms = &event_kernel->alarms; // Local copy for ease of reading |
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| 92 | __cfa_time_t currtime = __kernel_get_time(); // Check current time once so we everything "happens at once" |
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[8cb529e] | 93 | |
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[969b3fe] | 94 | //Loop throught every thing expired |
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| 95 | while( node = get_expired( alarms, currtime ) ) { |
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[1c273d0] | 96 | |
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[969b3fe] | 97 | // Check if this is a kernel |
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[c81ebf9] | 98 | if( node->kernel_alarm ) { |
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| 99 | preempt( node->proc ); |
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| 100 | } |
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| 101 | else { |
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| 102 | timeout( node->thrd ); |
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| 103 | } |
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| 104 | |
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[969b3fe] | 105 | // Check if this is a periodic alarm |
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[8cb529e] | 106 | __cfa_time_t period = node->period; |
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| 107 | if( period > 0 ) { |
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[969b3fe] | 108 | node->alarm = currtime + period; // Alarm is periodic, add currtime to it (used cached current time) |
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| 109 | insert( alarms, node ); // Reinsert the node for the next time it triggers |
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[c81ebf9] | 110 | } |
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| 111 | else { |
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[969b3fe] | 112 | node->set = false; // Node is one-shot, just mark it as not pending |
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[c81ebf9] | 113 | } |
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| 114 | } |
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| 115 | |
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[969b3fe] | 116 | // If there are still alarms pending, reset the timer |
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| 117 | if( alarms->head ) { __kernel_set_timer( alarms->head->alarm - currtime ); } |
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[c81ebf9] | 118 | } |
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| 119 | |
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[969b3fe] | 120 | // Update the preemption of a processor and notify interested parties |
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[c81ebf9] | 121 | void update_preemption( processor * this, __cfa_time_t duration ) { |
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| 122 | alarm_node_t * alarm = this->preemption_alarm; |
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| 123 | |
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| 124 | // Alarms need to be enabled |
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| 125 | if ( duration > 0 && !alarm->set ) { |
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| 126 | alarm->alarm = __kernel_get_time() + duration; |
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| 127 | alarm->period = duration; |
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| 128 | register_self( alarm ); |
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| 129 | } |
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| 130 | // Zero duraction but alarm is set |
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| 131 | else if ( duration == 0 && alarm->set ) { |
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| 132 | unregister_self( alarm ); |
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| 133 | alarm->alarm = 0; |
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| 134 | alarm->period = 0; |
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| 135 | } |
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| 136 | // If alarm is different from previous, change it |
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| 137 | else if ( duration > 0 && alarm->period != duration ) { |
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| 138 | unregister_self( alarm ); |
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| 139 | alarm->alarm = __kernel_get_time() + duration; |
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| 140 | alarm->period = duration; |
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| 141 | register_self( alarm ); |
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| 142 | } |
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| 143 | } |
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| 144 | |
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| 145 | //============================================================================================= |
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[cd17862] | 146 | // Kernel Signal Tools |
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[c81ebf9] | 147 | //============================================================================================= |
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| 148 | |
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[36982fc] | 149 | __cfaabi_dbg_debug_do( static thread_local void * last_interrupt = 0; ) |
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[b227f68] | 150 | |
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[82ff5845] | 151 | extern "C" { |
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[969b3fe] | 152 | // Disable interrupts by incrementing the counter |
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[82ff5845] | 153 | void disable_interrupts() { |
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[4e6fb8e] | 154 | __attribute__((unused)) unsigned short new_val = __atomic_add_fetch_2( &disable_preempt_count, 1, __ATOMIC_SEQ_CST ); |
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[969b3fe] | 155 | verify( new_val < 65_000u ); // If this triggers someone is disabling interrupts without enabling them |
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[82ff5845] | 156 | } |
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| 157 | |
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[969b3fe] | 158 | // Enable interrupts by decrementing the counter |
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| 159 | // If counter reaches 0, execute any pending CtxSwitch |
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[36982fc] | 160 | void enable_interrupts( __cfaabi_dbg_ctx_param ) { |
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[969b3fe] | 161 | processor * proc = this_processor; // Cache the processor now since interrupts can start happening after the atomic add |
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| 162 | thread_desc * thrd = this_thread; // Cache the thread now since interrupts can start happening after the atomic add |
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| 163 | |
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[4e6fb8e] | 164 | unsigned short prev = __atomic_fetch_add_2( &disable_preempt_count, -1, __ATOMIC_SEQ_CST ); |
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[969b3fe] | 165 | verify( prev != 0u ); // If this triggers someone is enabled already enabled interruptsverify( prev != 0u ); |
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| 166 | |
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| 167 | // Check if we need to prempt the thread because an interrupt was missed |
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[1c273d0] | 168 | if( prev == 1 && proc->pending_preemption ) { |
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| 169 | proc->pending_preemption = false; |
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| 170 | BlockInternal( thrd ); |
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[82ff5845] | 171 | } |
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[4e6fb8e] | 172 | |
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[969b3fe] | 173 | // For debugging purposes : keep track of the last person to enable the interrupts |
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[36982fc] | 174 | __cfaabi_dbg_debug_do( proc->last_enable = caller; ) |
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[82ff5845] | 175 | } |
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[969b3fe] | 176 | |
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| 177 | // Disable interrupts by incrementint the counter |
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| 178 | // Don't execute any pending CtxSwitch even if counter reaches 0 |
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| 179 | void enable_interrupts_noPoll() { |
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| 180 | __attribute__((unused)) unsigned short prev = __atomic_fetch_add_2( &disable_preempt_count, -1, __ATOMIC_SEQ_CST ); |
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| 181 | verify( prev != 0u ); // If this triggers someone is enabled already enabled interrupts |
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| 182 | } |
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[82ff5845] | 183 | } |
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| 184 | |
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[969b3fe] | 185 | // sigprocmask wrapper : unblock a single signal |
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[1c273d0] | 186 | static inline void signal_unblock( int sig ) { |
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[82ff5845] | 187 | sigset_t mask; |
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| 188 | sigemptyset( &mask ); |
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[1c273d0] | 189 | sigaddset( &mask, sig ); |
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[82ff5845] | 190 | |
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[47ecf2b] | 191 | if ( pthread_sigmask( SIG_UNBLOCK, &mask, NULL ) == -1 ) { |
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| 192 | abortf( "internal error, pthread_sigmask" ); |
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[cd17862] | 193 | } |
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[82ff5845] | 194 | } |
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| 195 | |
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[969b3fe] | 196 | // sigprocmask wrapper : block a single signal |
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[cd17862] | 197 | static inline void signal_block( int sig ) { |
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| 198 | sigset_t mask; |
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| 199 | sigemptyset( &mask ); |
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| 200 | sigaddset( &mask, sig ); |
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[47ecf2b] | 201 | |
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[cd17862] | 202 | if ( pthread_sigmask( SIG_BLOCK, &mask, NULL ) == -1 ) { |
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| 203 | abortf( "internal error, pthread_sigmask" ); |
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| 204 | } |
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| 205 | } |
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[47ecf2b] | 206 | |
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[969b3fe] | 207 | // kill wrapper : signal a processor |
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[cd17862] | 208 | static void preempt( processor * this ) { |
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| 209 | pthread_kill( this->kernel_thread, SIGUSR1 ); |
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[1c273d0] | 210 | } |
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[82ff5845] | 211 | |
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[969b3fe] | 212 | // reserved for future use |
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[cd17862] | 213 | static void timeout( thread_desc * this ) { |
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| 214 | //TODO : implement waking threads |
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| 215 | } |
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| 216 | |
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[969b3fe] | 217 | |
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| 218 | // Check if a CtxSwitch signal handler shoud defer |
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| 219 | // If true : preemption is safe |
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| 220 | // If false : preemption is unsafe and marked as pending |
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| 221 | static inline bool preemption_ready() { |
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| 222 | bool ready = disable_preempt_count == 0 && !preemption_in_progress; // Check if preemption is safe |
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| 223 | this_processor->pending_preemption = !ready; // Adjust the pending flag accordingly |
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| 224 | return ready; |
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| 225 | } |
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| 226 | |
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[cd17862] | 227 | //============================================================================================= |
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| 228 | // Kernel Signal Startup/Shutdown logic |
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| 229 | //============================================================================================= |
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| 230 | |
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[969b3fe] | 231 | // Startup routine to activate preemption |
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| 232 | // Called from kernel_startup |
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[cd17862] | 233 | void kernel_start_preemption() { |
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[36982fc] | 234 | __cfaabi_dbg_print_safe("Kernel : Starting preemption\n"); |
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[969b3fe] | 235 | |
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| 236 | // Start with preemption disabled until ready |
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| 237 | disable_preempt_count = 1; |
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| 238 | |
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| 239 | // Initialize the event kernel |
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| 240 | event_kernel = (event_kernel_t *)&storage_event_kernel; |
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[9236060] | 241 | (*event_kernel){}; |
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[969b3fe] | 242 | |
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| 243 | // Setup proper signal handlers |
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[ed235b6] | 244 | __kernel_sigaction( SIGUSR1, sigHandler_ctxSwitch, SA_SIGINFO | SA_RESTART ); // CtxSwitch handler |
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[969b3fe] | 245 | // __kernel_sigaction( SIGSEGV, sigHandler_segv , SA_SIGINFO ); // Failure handler |
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| 246 | // __kernel_sigaction( SIGBUS , sigHandler_segv , SA_SIGINFO ); // Failure handler |
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[cd17862] | 247 | |
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| 248 | signal_block( SIGALRM ); |
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| 249 | |
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| 250 | pthread_create( &alarm_thread, NULL, alarm_loop, NULL ); |
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| 251 | } |
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| 252 | |
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[969b3fe] | 253 | // Shutdown routine to deactivate preemption |
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| 254 | // Called from kernel_shutdown |
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[cd17862] | 255 | void kernel_stop_preemption() { |
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[36982fc] | 256 | __cfaabi_dbg_print_safe("Kernel : Preemption stopping\n"); |
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[d6ff3ff] | 257 | |
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[969b3fe] | 258 | // Block all signals since we are already shutting down |
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[cd17862] | 259 | sigset_t mask; |
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| 260 | sigfillset( &mask ); |
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| 261 | sigprocmask( SIG_BLOCK, &mask, NULL ); |
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| 262 | |
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[969b3fe] | 263 | // Notify the alarm thread of the shutdown |
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[a0b3e32] | 264 | sigval val = { 1 }; |
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| 265 | pthread_sigqueue( alarm_thread, SIGALRM, val ); |
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[969b3fe] | 266 | |
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| 267 | // Wait for the preemption thread to finish |
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[cd17862] | 268 | pthread_join( alarm_thread, NULL ); |
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[969b3fe] | 269 | |
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| 270 | // Preemption is now fully stopped |
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| 271 | |
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[36982fc] | 272 | __cfaabi_dbg_print_safe("Kernel : Preemption stopped\n"); |
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[cd17862] | 273 | } |
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| 274 | |
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[969b3fe] | 275 | // Raii ctor/dtor for the preemption_scope |
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| 276 | // Used by thread to control when they want to receive preemption signals |
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[242a902] | 277 | void ?{}( preemption_scope & this, processor * proc ) { |
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[9236060] | 278 | (this.alarm){ proc, zero_time, zero_time }; |
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[242a902] | 279 | this.proc = proc; |
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| 280 | this.proc->preemption_alarm = &this.alarm; |
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[969b3fe] | 281 | |
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[9236060] | 282 | update_preemption( this.proc, from_us(this.proc->cltr->preemption) ); |
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[cd17862] | 283 | } |
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| 284 | |
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[242a902] | 285 | void ^?{}( preemption_scope & this ) { |
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[cd17862] | 286 | disable_interrupts(); |
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| 287 | |
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[9236060] | 288 | update_preemption( this.proc, zero_time ); |
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[cd17862] | 289 | } |
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| 290 | |
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| 291 | //============================================================================================= |
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| 292 | // Kernel Signal Handlers |
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| 293 | //============================================================================================= |
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[47ecf2b] | 294 | |
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[969b3fe] | 295 | // Context switch signal handler |
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| 296 | // Receives SIGUSR1 signal and causes the current thread to yield |
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[1c273d0] | 297 | void sigHandler_ctxSwitch( __CFA_SIGPARMS__ ) { |
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[36982fc] | 298 | __cfaabi_dbg_debug_do( last_interrupt = (void *)(cxt->uc_mcontext.gregs[CFA_REG_IP]); ) |
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[969b3fe] | 299 | |
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| 300 | // Check if it is safe to preempt here |
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| 301 | if( !preemption_ready() ) { return; } |
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| 302 | |
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| 303 | preemption_in_progress = true; // Sync flag : prevent recursive calls to the signal handler |
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| 304 | signal_unblock( SIGUSR1 ); // We are about to CtxSwitch out of the signal handler, let other handlers in |
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| 305 | preemption_in_progress = false; // Clear the in progress flag |
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| 306 | |
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| 307 | // Preemption can occur here |
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| 308 | |
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| 309 | BlockInternal( (thread_desc*)this_thread ); // Do the actual CtxSwitch |
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[c81ebf9] | 310 | } |
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| 311 | |
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[969b3fe] | 312 | // Main of the alarm thread |
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| 313 | // Waits on SIGALRM and send SIGUSR1 to whom ever needs it |
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[cd17862] | 314 | void * alarm_loop( __attribute__((unused)) void * args ) { |
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[969b3fe] | 315 | // Block sigalrms to control when they arrive |
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[cd17862] | 316 | sigset_t mask; |
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| 317 | sigemptyset( &mask ); |
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| 318 | sigaddset( &mask, SIGALRM ); |
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| 319 | |
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| 320 | if ( pthread_sigmask( SIG_BLOCK, &mask, NULL ) == -1 ) { |
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| 321 | abortf( "internal error, pthread_sigmask" ); |
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[82ff5845] | 322 | } |
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[c81ebf9] | 323 | |
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[969b3fe] | 324 | // Main loop |
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[cd17862] | 325 | while( true ) { |
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[969b3fe] | 326 | // Wait for a sigalrm |
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[a0b3e32] | 327 | siginfo_t info; |
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| 328 | int sig = sigwaitinfo( &mask, &info ); |
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[969b3fe] | 329 | |
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[e2f7bc3] | 330 | if( sig < 0 ) { |
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| 331 | //Error! |
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| 332 | int err = errno; |
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| 333 | switch( err ) { |
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| 334 | case EAGAIN : |
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| 335 | case EINTR : |
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| 336 | continue; |
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| 337 | case EINVAL : |
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| 338 | abortf("Timeout was invalid."); |
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| 339 | default: |
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| 340 | abortf("Unhandled error %d", err); |
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| 341 | } |
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| 342 | } |
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| 343 | |
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[969b3fe] | 344 | // If another signal arrived something went wrong |
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[8cb529e] | 345 | assertf(sig == SIGALRM, "Kernel Internal Error, sigwait: Unexpected signal %d (%d : %d)\n", sig, info.si_code, info.si_value.sival_int); |
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| 346 | |
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[36982fc] | 347 | // __cfaabi_dbg_print_safe("Kernel : Caught alarm from %d with %d\n", info.si_code, info.si_value.sival_int ); |
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[969b3fe] | 348 | // Switch on the code (a.k.a. the sender) to |
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[8cb529e] | 349 | switch( info.si_code ) |
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[a0b3e32] | 350 | { |
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[969b3fe] | 351 | // Timers can apparently be marked as sent for the kernel |
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| 352 | // In either case, tick preemption |
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[8cb529e] | 353 | case SI_TIMER: |
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| 354 | case SI_KERNEL: |
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[36982fc] | 355 | // __cfaabi_dbg_print_safe("Kernel : Preemption thread tick\n"); |
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| 356 | lock( event_kernel->lock __cfaabi_dbg_ctx2 ); |
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[8cb529e] | 357 | tick_preemption(); |
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[ea7d2b0] | 358 | unlock( event_kernel->lock ); |
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[8cb529e] | 359 | break; |
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[969b3fe] | 360 | // Signal was not sent by the kernel but by an other thread |
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[8cb529e] | 361 | case SI_QUEUE: |
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[969b3fe] | 362 | // For now, other thread only signal the alarm thread to shut it down |
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| 363 | // If this needs to change use info.si_value and handle the case here |
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[8cb529e] | 364 | goto EXIT; |
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[cd17862] | 365 | } |
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| 366 | } |
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[a0b3e32] | 367 | |
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[8cb529e] | 368 | EXIT: |
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[36982fc] | 369 | __cfaabi_dbg_print_safe("Kernel : Preemption thread stopping\n"); |
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[a0b3e32] | 370 | return NULL; |
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[82ff5845] | 371 | } |
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| 372 | |
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[969b3fe] | 373 | // Sigaction wrapper : register an signal handler |
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[82ff5845] | 374 | static void __kernel_sigaction( int sig, void (*handler)(__CFA_SIGPARMS__), int flags ) { |
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| 375 | struct sigaction act; |
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| 376 | |
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| 377 | act.sa_sigaction = (void (*)(int, siginfo_t *, void *))handler; |
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[1c273d0] | 378 | act.sa_flags = flags; |
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| 379 | |
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| 380 | if ( sigaction( sig, &act, NULL ) == -1 ) { |
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[36982fc] | 381 | __cfaabi_dbg_print_buffer_decl( |
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[1c273d0] | 382 | " __kernel_sigaction( sig:%d, handler:%p, flags:%d ), problem installing signal handler, error(%d) %s.\n", |
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| 383 | sig, handler, flags, errno, strerror( errno ) |
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| 384 | ); |
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| 385 | _exit( EXIT_FAILURE ); |
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| 386 | } |
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| 387 | } |
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| 388 | |
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[969b3fe] | 389 | // Sigaction wrapper : restore default handler |
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[1c273d0] | 390 | static void __kernel_sigdefault( int sig ) { |
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| 391 | struct sigaction act; |
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| 392 | |
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[969b3fe] | 393 | act.sa_handler = SIG_DFL; |
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[1c273d0] | 394 | act.sa_flags = 0; |
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| 395 | sigemptyset( &act.sa_mask ); |
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[82ff5845] | 396 | |
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| 397 | if ( sigaction( sig, &act, NULL ) == -1 ) { |
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[36982fc] | 398 | __cfaabi_dbg_print_buffer_decl( |
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[1c273d0] | 399 | " __kernel_sigdefault( sig:%d ), problem reseting signal handler, error(%d) %s.\n", |
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| 400 | sig, errno, strerror( errno ) |
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| 401 | ); |
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[82ff5845] | 402 | _exit( EXIT_FAILURE ); |
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[1c273d0] | 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | //============================================================================================= |
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| 407 | // Terminating Signals logic |
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| 408 | //============================================================================================= |
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| 409 | |
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[36982fc] | 410 | __cfaabi_dbg_debug_do( |
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[1c273d0] | 411 | static void __kernel_backtrace( int start ) { |
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| 412 | // skip first N stack frames |
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| 413 | |
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| 414 | enum { Frames = 50 }; |
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| 415 | void * array[Frames]; |
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| 416 | int size = backtrace( array, Frames ); |
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| 417 | char ** messages = backtrace_symbols( array, size ); |
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| 418 | |
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| 419 | // find executable name |
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| 420 | *index( messages[0], '(' ) = '\0'; |
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| 421 | #ifdef __USE_STREAM__ |
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| 422 | serr | "Stack back trace for:" | messages[0] | endl; |
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| 423 | #else |
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| 424 | fprintf( stderr, "Stack back trace for: %s\n", messages[0]); |
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| 425 | #endif |
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| 426 | |
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| 427 | // skip last 2 stack frames after main |
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| 428 | for ( int i = start; i < size && messages != NULL; i += 1 ) { |
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| 429 | char * name = NULL; |
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| 430 | char * offset_begin = NULL; |
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| 431 | char * offset_end = NULL; |
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| 432 | |
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| 433 | for ( char *p = messages[i]; *p; ++p ) { |
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| 434 | // find parantheses and +offset |
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| 435 | if ( *p == '(' ) { |
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| 436 | name = p; |
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| 437 | } |
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| 438 | else if ( *p == '+' ) { |
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| 439 | offset_begin = p; |
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| 440 | } |
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| 441 | else if ( *p == ')' ) { |
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| 442 | offset_end = p; |
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| 443 | break; |
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| 444 | } |
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| 445 | } |
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| 446 | |
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| 447 | // if line contains symbol print it |
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| 448 | int frameNo = i - start; |
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| 449 | if ( name && offset_begin && offset_end && name < offset_begin ) { |
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| 450 | // delimit strings |
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| 451 | *name++ = '\0'; |
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| 452 | *offset_begin++ = '\0'; |
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| 453 | *offset_end++ = '\0'; |
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| 454 | |
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| 455 | #ifdef __USE_STREAM__ |
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| 456 | serr | "(" | frameNo | ")" | messages[i] | ":" |
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| 457 | | name | "+" | offset_begin | offset_end | endl; |
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| 458 | #else |
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| 459 | fprintf( stderr, "(%i) %s : %s + %s %s\n", frameNo, messages[i], name, offset_begin, offset_end); |
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| 460 | #endif |
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| 461 | } |
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| 462 | // otherwise, print the whole line |
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| 463 | else { |
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| 464 | #ifdef __USE_STREAM__ |
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| 465 | serr | "(" | frameNo | ")" | messages[i] | endl; |
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| 466 | #else |
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| 467 | fprintf( stderr, "(%i) %s\n", frameNo, messages[i] ); |
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| 468 | #endif |
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| 469 | } |
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| 470 | } |
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| 471 | |
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| 472 | free( messages ); |
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| 473 | } |
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| 474 | ) |
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| 475 | |
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[f2b12406] | 476 | // void sigHandler_segv( __CFA_SIGPARMS__ ) { |
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[36982fc] | 477 | // __cfaabi_dbg_debug_do( |
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[f2b12406] | 478 | // #ifdef __USE_STREAM__ |
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| 479 | // serr | "*CFA runtime error* program cfa-cpp terminated with" |
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| 480 | // | (sig == SIGSEGV ? "segment fault." : "bus error.") |
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| 481 | // | endl; |
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| 482 | // #else |
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| 483 | // fprintf( stderr, "*CFA runtime error* program cfa-cpp terminated with %s\n", sig == SIGSEGV ? "segment fault." : "bus error." ); |
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| 484 | // #endif |
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| 485 | |
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| 486 | // // skip first 2 stack frames |
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| 487 | // __kernel_backtrace( 1 ); |
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| 488 | // ) |
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| 489 | // exit( EXIT_FAILURE ); |
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| 490 | // } |
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[1c273d0] | 491 | |
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| 492 | // void sigHandler_abort( __CFA_SIGPARMS__ ) { |
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| 493 | // // skip first 6 stack frames |
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[36982fc] | 494 | // __cfaabi_dbg_debug_do( __kernel_backtrace( 6 ); ) |
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[1c273d0] | 495 | |
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| 496 | // // reset default signal handler |
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| 497 | // __kernel_sigdefault( SIGABRT ); |
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| 498 | |
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| 499 | // raise( SIGABRT ); |
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[6b0b624] | 500 | // } |
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| 501 | |
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| 502 | // Local Variables: // |
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| 503 | // mode: c // |
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| 504 | // tab-width: 4 // |
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| 505 | // End: // |
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