[0e1846] | 1 | /**************************************** |
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| 2 | * Computer Algebra System SINGULAR * |
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| 3 | ****************************************/ |
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| 4 | /* |
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| 5 | * ABSTRACT - interupt handling |
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| 6 | */ |
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| 7 | |
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| 8 | /* includes */ |
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[502ea2] | 9 | #ifdef DecAlpha_OSF1 |
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| 10 | #define _XOPEN_SOURCE_EXTENDED |
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[d5bd816] | 11 | #endif /* MP3-Y2 0.022UF */ |
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[0e1846] | 12 | #include <stdio.h> |
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| 13 | #include <stddef.h> |
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| 14 | #include <stdlib.h> |
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[502ea2] | 15 | #include <strings.h> |
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[0e1846] | 16 | #include <signal.h> |
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[561aa2] | 17 | #include <sys/types.h> |
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| 18 | #include <sys/wait.h> |
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[ef6f95] | 19 | |
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[16f511] | 20 | #ifdef HAVE_CONFIG_H |
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[ba5e9e] | 21 | #include "singularconfig.h" |
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[16f511] | 22 | #endif /* HAVE_CONFIG_H */ |
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[b60bfe] | 23 | |
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[b1dfaf] | 24 | #include <kernel/mod2.h> |
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| 25 | #include <omalloc/omalloc.h> |
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[b60bfe] | 26 | #include <Singular/tok.h> |
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| 27 | #include <Singular/ipshell.h> |
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[599326] | 28 | #include <kernel/febase.h> |
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[751785e] | 29 | void sig_chld_hdl(int sig); /*#include <Singular/links/ssiLink.h>*/ |
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[b60bfe] | 30 | #include <Singular/cntrlc.h> |
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| 31 | #include <Singular/feOpt.h> |
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[659a7a] | 32 | #include <Singular/misc_ip.h> |
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[f8565a] | 33 | #include <Singular/si_signals.h> |
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[b60bfe] | 34 | #include <Singular/links/silink.h> |
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| 35 | #include <Singular/links/ssiLink.h> |
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[dc0898] | 36 | |
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[d6681d] | 37 | /* undef, if you don't want GDB to come up on error */ |
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[b39d4d] | 38 | |
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[b60bfe] | 39 | #define CALL_GDB |
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| 40 | |
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[d6681d] | 41 | #if defined(__OPTIMIZE__) && defined(CALL_GDB) |
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| 42 | #undef CALL_GDB |
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| 43 | #endif |
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| 44 | |
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[751785e] | 45 | #if defined(unix) |
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[337d5b] | 46 | #include <unistd.h> |
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| 47 | #include <sys/types.h> |
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| 48 | |
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| 49 | #ifdef TIME_WITH_SYS_TIME |
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| 50 | #include <time.h> |
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| 51 | #ifdef HAVE_SYS_TIME_H |
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| 52 | #include <sys/time.h> |
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| 53 | #endif |
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| 54 | #else |
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| 55 | #ifdef HAVE_SYS_TIME_H |
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| 56 | #include <sys/time.h> |
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| 57 | #else |
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| 58 | #include <time.h> |
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| 59 | #endif |
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| 60 | #endif |
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| 61 | #ifdef HAVE_SYS_TIMES_H |
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| 62 | #include <sys/times.h> |
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| 63 | #endif |
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| 64 | |
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| 65 | #define INTERACTIVE 0 |
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| 66 | #define STACK_TRACE 1 |
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| 67 | |
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| 68 | #ifdef CALL_GDB |
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| 69 | static void debug (int); |
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[a5da6f] | 70 | static void debug_stop (char *const*args); |
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[337d5b] | 71 | #endif |
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| 72 | #ifndef __OPTIMIZE__ |
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| 73 | static void stack_trace_sigchld (int); |
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[a5da6f] | 74 | static void stack_trace (char *const*args); |
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[337d5b] | 75 | #endif |
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| 76 | #endif |
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[0e1846] | 77 | |
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[85ab8cd] | 78 | si_link pipeLastLink=NULL; |
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[655e1f] | 79 | BOOLEAN singular_in_batchmode=FALSE; |
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[85ab8cd] | 80 | |
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[2e4ec14] | 81 | void sig_pipe_hdl(int /*sig*/) |
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[85ab8cd] | 82 | { |
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| 83 | if (pipeLastLink!=NULL) |
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| 84 | { |
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| 85 | slClose(pipeLastLink); |
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| 86 | pipeLastLink=NULL; |
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| 87 | WerrorS("pipe failed"); |
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| 88 | } |
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| 89 | } |
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| 90 | |
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[659a7a] | 91 | volatile BOOLEAN do_shutdown = FALSE; |
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| 92 | volatile int defer_shutdown = 0; |
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| 93 | |
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[2e4ec14] | 94 | void sig_term_hdl(int /*sig*/) |
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[7626c5f] | 95 | { |
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[659a7a] | 96 | do_shutdown = TRUE; |
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| 97 | if (!defer_shutdown) |
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[b60bfe] | 98 | { |
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[659a7a] | 99 | m2_end(1); |
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[b60bfe] | 100 | } |
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[7626c5f] | 101 | } |
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| 102 | |
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[d5bd816] | 103 | /*---------------------------------------------------------------------* |
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| 104 | * File scope Variables (Variables share by several functions in |
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| 105 | * the same file ) |
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| 106 | * |
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| 107 | *---------------------------------------------------------------------*/ |
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[0e1846] | 108 | /* data */ |
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[07dacd] | 109 | jmp_buf si_start_jmpbuf; |
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[0e1846] | 110 | int siRandomStart; |
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[07dacd] | 111 | short si_restart=0; |
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| 112 | BOOLEAN siCntrlc = FALSE; |
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[0e1846] | 113 | |
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[5812c69] | 114 | typedef void (*si_hdl_typ)(int); |
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| 115 | |
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[7c96c03] | 116 | |
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[0e1846] | 117 | /*0 implementation*/ |
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[d5bd816] | 118 | /*---------------------------------------------------------------------* |
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| 119 | * Functions declarations |
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| 120 | * |
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| 121 | *---------------------------------------------------------------------*/ |
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[b60bfe] | 122 | void sigint_handler(int /*sig*/); |
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[d5bd816] | 123 | |
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[7c96c03] | 124 | si_hdl_typ si_set_signal ( int sig, si_hdl_typ signal_handler); |
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[d5bd816] | 125 | |
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| 126 | /*---------------------------------------------------------------------*/ |
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[337d5b] | 127 | /** |
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[d5bd816] | 128 | * @brief meta function for binding a signal to an handler |
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| 129 | |
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| 130 | @param[in] sig Signal number |
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| 131 | @param[in] signal_handler Pointer to signal handler |
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| 132 | |
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| 133 | @return value of signal() |
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| 134 | **/ |
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| 135 | /*---------------------------------------------------------------------*/ |
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[85ab8cd] | 136 | si_hdl_typ si_set_signal ( int sig, si_hdl_typ signal_handler) |
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[d5bd816] | 137 | { |
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[72de5f] | 138 | #if 0 |
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[7c96c03] | 139 | si_hdl_typ retval=signal (sig, (si_hdl_typ)signal_handler); |
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| 140 | if (retval == SIG_ERR) |
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| 141 | { |
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[d5bd816] | 142 | fprintf(stderr, "Unable to init signal %d ... exiting...\n", sig); |
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| 143 | } |
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[bdda8c2] | 144 | si_siginterrupt(sig, 0); |
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[72de5f] | 145 | /*system calls will be restarted if interrupted by the specified |
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| 146 | * signal sig. This is the default behavior in Linux. |
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| 147 | */ |
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| 148 | #else |
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| 149 | struct sigaction new_action,old_action; |
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| 150 | |
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| 151 | /* Set up the structure to specify the new action. */ |
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| 152 | new_action.sa_handler = signal_handler; |
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| 153 | if (sig==SIGINT) |
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| 154 | sigemptyset (&new_action.sa_mask); |
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| 155 | else |
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| 156 | new_action.sa_flags = SA_RESTART; |
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| 157 | |
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[bdda8c2] | 158 | int r=si_sigaction (sig, &new_action, &old_action); |
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[72de5f] | 159 | si_hdl_typ retval=(si_hdl_typ)old_action.sa_handler; |
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| 160 | if (r == -1) |
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| 161 | { |
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| 162 | fprintf(stderr, "Unable to init signal %d ... exiting...\n", sig); |
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| 163 | retval=SIG_ERR; |
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| 164 | } |
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[206aed] | 165 | #endif |
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[d5bd816] | 166 | return retval; |
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[7c96c03] | 167 | } /* si_set_signal */ |
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[d5bd816] | 168 | |
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[0e1846] | 169 | |
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[d5bd816] | 170 | /*---------------------------------------------------------------------*/ |
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[319eab] | 171 | #if defined(__linux__) && defined(__i386) |
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[4f818c] | 172 | #if !defined(HAVE_SIGCONTEXT) && !defined(HAVE_ASM_SIGCONTEXT_H) |
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[c7a653] | 173 | // we need the following structure sigcontext_struct. |
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| 174 | // if configure finds asm/singcontext.h we assume |
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| 175 | // that this file contains the structure and is included |
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| 176 | // via signal.h |
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[0e1846] | 177 | struct sigcontext_struct { |
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| 178 | unsigned short gs, __gsh; |
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| 179 | unsigned short fs, __fsh; |
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| 180 | unsigned short es, __esh; |
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| 181 | unsigned short ds, __dsh; |
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| 182 | unsigned long edi; |
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| 183 | unsigned long esi; |
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| 184 | unsigned long ebp; |
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| 185 | unsigned long esp; |
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| 186 | unsigned long ebx; |
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| 187 | unsigned long edx; |
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| 188 | unsigned long ecx; |
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| 189 | unsigned long eax; |
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| 190 | unsigned long trapno; |
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| 191 | unsigned long err; |
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| 192 | unsigned long eip; |
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| 193 | unsigned short cs, __csh; |
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| 194 | unsigned long eflags; |
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| 195 | unsigned long esp_at_signal; |
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| 196 | unsigned short ss, __ssh; |
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| 197 | unsigned long i387; |
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| 198 | unsigned long oldmask; |
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| 199 | unsigned long cr2; |
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| 200 | }; |
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[337d5b] | 201 | #endif |
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[f72aa03] | 202 | #define HAVE_SIGSTRUCT |
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[0e1846] | 203 | typedef struct sigcontext_struct sigcontext; |
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[f72aa03] | 204 | #endif |
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[337d5b] | 205 | |
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[319eab] | 206 | #if defined(__linux__) && defined(__amd64) |
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[f72aa03] | 207 | #define HAVE_SIGSTRUCT |
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| 208 | #endif |
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[0e1846] | 209 | |
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[d5bd816] | 210 | |
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[337d5b] | 211 | #if defined(HAVE_SIGSTRUCT) |
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[d5bd816] | 212 | /*2---------------------------------------------------------------------*/ |
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[337d5b] | 213 | /** |
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| 214 | * @brief signal handler for run time errors, linux/i386, x86_64 version |
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[d5bd816] | 215 | |
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[337d5b] | 216 | @param[in] sig |
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| 217 | @param[in] s |
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[d5bd816] | 218 | **/ |
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| 219 | /*---------------------------------------------------------------------*/ |
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[0e1846] | 220 | void sigsegv_handler(int sig, sigcontext s) |
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| 221 | { |
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[92644b] | 222 | fprintf(stderr,"Singular : signal %d (v: %d):\n",sig,SINGULAR_VERSION); |
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[0e1846] | 223 | if (sig!=SIGINT) |
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| 224 | { |
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[f9d901] | 225 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
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[1270db] | 226 | fprintf(stderr,"Segment fault/Bus error occurred at %lx because of %lx (r:%d)\n" |
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[0e1846] | 227 | "please inform the authors\n", |
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[c7a653] | 228 | #ifdef __i386__ |
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[28fc7b] | 229 | (long)s.eip, |
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[c7a653] | 230 | #else /* x86_64*/ |
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[28fc7b] | 231 | (long)s.rip, |
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[c7a653] | 232 | #endif |
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| 233 | (long)s.cr2,siRandomStart); |
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[0e1846] | 234 | } |
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[337d5b] | 235 | #ifdef __OPTIMIZE__ |
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[07dacd] | 236 | if(si_restart<3) |
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| 237 | { |
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| 238 | si_restart++; |
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| 239 | fprintf(stderr,"trying to restart...\n"); |
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| 240 | init_signals(); |
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| 241 | longjmp(si_start_jmpbuf,1); |
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| 242 | } |
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[337d5b] | 243 | #endif /* __OPTIMIZE__ */ |
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| 244 | #ifdef CALL_GDB |
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[788fdf] | 245 | if (sig!=SIGINT) |
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[9803fb] | 246 | { |
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| 247 | if (singular_in_batchmode) debug(STACK_TRACE); |
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| 248 | else debug(INTERACTIVE); |
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| 249 | } |
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[337d5b] | 250 | #endif /* CALL_GDB */ |
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[0e1846] | 251 | exit(0); |
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| 252 | } |
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| 253 | |
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[d5bd816] | 254 | /*---------------------------------------------------------------------*/ |
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[337d5b] | 255 | #elif defined(SunOS) /*SPARC_SUNOS*/ |
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[0e1846] | 256 | /*2 |
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| 257 | * signal handler for run time errors, sparc sunos 4 version |
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| 258 | */ |
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| 259 | void sigsegv_handler(int sig, int code, struct sigcontext *scp, char *addr) |
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| 260 | { |
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[92644b] | 261 | fprintf(stderr,"Singular : signal %d, code %d (v: %d):\n", |
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| 262 | sig,code,SINGULAR_VERSION); |
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[0e1846] | 263 | if ((sig!=SIGINT)&&(sig!=SIGABRT)) |
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| 264 | { |
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[f9d901] | 265 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
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[0e1846] | 266 | fprintf(stderr,"Segment fault/Bus error occurred at %x (r:%d)\n" |
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| 267 | "please inform the authors\n", |
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| 268 | (int)addr,siRandomStart); |
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| 269 | } |
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[337d5b] | 270 | #ifdef __OPTIMIZE__ |
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[97eb91] | 271 | if(si_restart<3) |
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| 272 | { |
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| 273 | si_restart++; |
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| 274 | fprintf(stderr,"trying to restart...\n"); |
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| 275 | init_signals(); |
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| 276 | longjmp(si_start_jmpbuf,1); |
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| 277 | } |
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[337d5b] | 278 | #endif /* __OPTIMIZE__ */ |
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| 279 | #ifdef CALL_GDB |
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[0e1846] | 280 | if (sig!=SIGINT) debug(STACK_TRACE); |
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[337d5b] | 281 | #endif /* CALL_GDB */ |
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[0e1846] | 282 | exit(0); |
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| 283 | } |
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[b60bfe] | 284 | |
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[337d5b] | 285 | #else |
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[0e1846] | 286 | |
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[d5bd816] | 287 | /*---------------------------------------------------------------------*/ |
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[0e1846] | 288 | /*2 |
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| 289 | * signal handler for run time errors, general version |
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| 290 | */ |
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| 291 | void sigsegv_handler(int sig) |
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| 292 | { |
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[92644b] | 293 | fprintf(stderr,"Singular : signal %d (v: %d):\n", |
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| 294 | sig,SINGULAR_VERSION); |
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[0e1846] | 295 | if (sig!=SIGINT) |
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| 296 | { |
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[f9d901] | 297 | fprintf(stderr,"current line:>>%s<<\n",my_yylinebuf); |
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[0e1846] | 298 | fprintf(stderr,"Segment fault/Bus error occurred (r:%d)\n" |
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| 299 | "please inform the authors\n", |
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| 300 | siRandomStart); |
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| 301 | } |
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[337d5b] | 302 | #ifdef __OPTIMIZE__ |
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[97eb91] | 303 | if(si_restart<3) |
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| 304 | { |
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| 305 | si_restart++; |
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| 306 | fprintf(stderr,"trying to restart...\n"); |
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| 307 | init_signals(); |
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| 308 | longjmp(si_start_jmpbuf,1); |
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| 309 | } |
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[337d5b] | 310 | #endif /* __OPTIMIZE__ */ |
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[751785e] | 311 | #if defined(unix) |
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[337d5b] | 312 | #ifdef CALL_GDB |
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[0e1846] | 313 | if (sig!=SIGINT) debug(STACK_TRACE); |
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[337d5b] | 314 | #endif /* CALL_GDB */ |
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| 315 | #endif /* unix */ |
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[0e1846] | 316 | exit(0); |
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| 317 | } |
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[337d5b] | 318 | #endif |
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[d5bd816] | 319 | |
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[b60bfe] | 320 | |
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[0e1846] | 321 | /*2 |
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| 322 | * signal handler for SIGINT |
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| 323 | */ |
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[32cb7a] | 324 | int sigint_handler_cnt=0; |
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[2e4ec14] | 325 | void sigint_handler(int /*sig*/) |
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[0e1846] | 326 | { |
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[66415e1] | 327 | mflush(); |
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[337d5b] | 328 | #ifdef HAVE_FEREAD |
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[0fa9018] | 329 | if (fe_is_raw_tty) fe_temp_reset(); |
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[337d5b] | 330 | #endif /* HAVE_FEREAD */ |
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[32cb7a] | 331 | char default_opt=' '; |
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| 332 | if ((feOptSpec[FE_OPT_CNTRLC].value!=NULL) |
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| 333 | && ((char*)(feOptSpec[FE_OPT_CNTRLC].value))[0]) |
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| 334 | { default_opt=((char*)(feOptSpec[FE_OPT_CNTRLC].value))[0]; } |
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[66415e1] | 335 | loop |
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| 336 | { |
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[e8a30d] | 337 | int cnt=0; |
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[2272c33] | 338 | int c; |
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[32cb7a] | 339 | |
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| 340 | if (singular_in_batchmode) |
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[2272c33] | 341 | { |
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[eed07e8] | 342 | c = 'q'; |
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[2272c33] | 343 | } |
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[32cb7a] | 344 | else if (default_opt!=' ') |
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| 345 | { |
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| 346 | c = default_opt; |
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| 347 | } |
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[2272c33] | 348 | else |
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| 349 | { |
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[eed07e8] | 350 | fprintf(stderr,"// ** Interrupt at cmd:`%s` in line:'%s'\n", |
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| 351 | Tok2Cmdname(iiOp),my_yylinebuf); |
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| 352 | if (feGetOptValue(FE_OPT_EMACS) == NULL) |
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| 353 | { |
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[32cb7a] | 354 | fputs("abort after this command(a), abort immediately(r), print backtrace(b), continue(c) or quit Singular(q) ?",stderr);fflush(stderr); |
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[eed07e8] | 355 | c = fgetc(stdin); |
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| 356 | } |
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| 357 | else |
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| 358 | { |
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| 359 | c = 'a'; |
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| 360 | } |
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[2272c33] | 361 | } |
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[337d5b] | 362 | |
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[2272c33] | 363 | switch(c) |
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[66415e1] | 364 | { |
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[32cb7a] | 365 | case 'q': case EOF: |
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[66415e1] | 366 | m2_end(2); |
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[07dacd] | 367 | case 'r': |
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[32cb7a] | 368 | if (sigint_handler_cnt<3) |
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| 369 | { |
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| 370 | sigint_handler_cnt++; |
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| 371 | fputs("** Warning: Singular should be restarted as soon as possible **\n",stderr); |
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| 372 | fflush(stderr); |
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| 373 | longjmp(si_start_jmpbuf,1); |
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| 374 | } |
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| 375 | else |
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| 376 | { |
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| 377 | fputs("** tried too often, try another possibility **\n",stderr); |
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| 378 | fflush(stderr); |
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| 379 | } |
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| 380 | break; |
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[09e228] | 381 | case 'b': |
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| 382 | VoiceBackTrack(); |
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| 383 | break; |
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[e8a30d] | 384 | case 'a': |
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| 385 | siCntrlc++; |
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[66415e1] | 386 | case 'c': |
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[32cb7a] | 387 | if ((feGetOptValue(FE_OPT_EMACS) == NULL) && (default_opt!=' ')) |
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| 388 | { |
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| 389 | /* Read until a newline or EOF */ |
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| 390 | while (c != EOF && c != '\n') c = fgetc(stdin); |
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| 391 | } |
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[7c96c03] | 392 | si_set_signal(SIGINT ,(si_hdl_typ)sigint_handler); |
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[07dacd] | 393 | return; |
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[50b2df] | 394 | //siCntrlc ++; |
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[7c96c03] | 395 | //if (siCntrlc>2) si_set_signal(SIGINT,(si_hdl_typ) sigsegv_handler); |
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| 396 | //else si_set_signal(SIGINT,(si_hdl_typ) sigint_handler); |
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[66415e1] | 397 | } |
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[e8a30d] | 398 | cnt++; |
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| 399 | if(cnt>5) m2_end(2); |
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[66415e1] | 400 | } |
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[0e1846] | 401 | } |
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| 402 | |
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[e8a30d] | 403 | //void test_int() |
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| 404 | //{ |
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| 405 | // if (siCntrlc!=0) |
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| 406 | // { |
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| 407 | // int saveecho = si_echo; |
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| 408 | // siCntrlc = FALSE; |
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[7c96c03] | 409 | // si_set_signal(SIGINT ,sigint_handler); |
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[e8a30d] | 410 | // iiDebug(); |
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| 411 | // si_echo = saveecho; |
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| 412 | // } |
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| 413 | //} |
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[0e1846] | 414 | |
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| 415 | #ifdef unix |
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[d5bd816] | 416 | # ifndef __OPTIMIZE__ |
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[ccae2f] | 417 | volatile int si_stop_stack_trace_x; |
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[d5bd816] | 418 | # ifdef CALL_GDB |
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[577d19f] | 419 | static void debug (int method) |
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[0e1846] | 420 | { |
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[8a6c6a] | 421 | if (feOptValue(FE_OPT_NO_TTY)) |
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| 422 | { |
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| 423 | dReportError("Caught Signal 11"); |
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| 424 | return; |
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| 425 | } |
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[0e1846] | 426 | int pid; |
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| 427 | char buf[16]; |
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[a5da6f] | 428 | char * args[4] = { (char*)"gdb", (char*)"Singularg", NULL, NULL }; |
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[577d19f] | 429 | |
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[337d5b] | 430 | #ifdef HAVE_FEREAD |
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[0fa9018] | 431 | if (fe_is_raw_tty) fe_temp_reset(); |
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[337d5b] | 432 | #endif /* HAVE_FEREAD */ |
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[0fa9018] | 433 | |
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[0e1846] | 434 | sprintf (buf, "%d", getpid ()); |
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| 435 | |
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| 436 | args[2] = buf; |
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| 437 | |
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| 438 | pid = fork (); |
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| 439 | if (pid == 0) |
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| 440 | { |
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| 441 | switch (method) |
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| 442 | { |
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| 443 | case INTERACTIVE: |
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[ccae2f] | 444 | fprintf (stderr, "\n\nquit with \"p si_stop_stack_trace_x=0\"\n\n\n"); |
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[0e1846] | 445 | debug_stop (args); |
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| 446 | break; |
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| 447 | case STACK_TRACE: |
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| 448 | fprintf (stderr, "stack_trace\n"); |
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| 449 | stack_trace (args); |
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| 450 | break; |
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[5687c9] | 451 | default: |
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| 452 | // should not be reached: |
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| 453 | exit(1); |
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[0e1846] | 454 | } |
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| 455 | } |
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| 456 | else if (pid == -1) |
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| 457 | { |
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| 458 | perror ("could not fork"); |
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| 459 | return; |
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| 460 | } |
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| 461 | |
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| 462 | si_stop_stack_trace_x = 1; |
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| 463 | while (si_stop_stack_trace_x) ; |
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| 464 | } |
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| 465 | |
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[a5da6f] | 466 | static void debug_stop (char *const*args) |
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[0e1846] | 467 | { |
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| 468 | execvp (args[0], args); |
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| 469 | perror ("exec failed"); |
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| 470 | _exit (0); |
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| 471 | } |
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[d5bd816] | 472 | # endif /* CALL_GDB */ |
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[0e1846] | 473 | |
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[a5da6f] | 474 | static void stack_trace (char *const*args) |
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[0e1846] | 475 | { |
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| 476 | int pid; |
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| 477 | int in_fd[2]; |
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| 478 | int out_fd[2]; |
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| 479 | fd_set fdset; |
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| 480 | fd_set readset; |
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| 481 | struct timeval tv; |
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| 482 | int sel, index, state; |
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| 483 | char buffer[256]; |
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| 484 | char c; |
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| 485 | |
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| 486 | if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1)) |
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| 487 | { |
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| 488 | perror ("could open pipe"); |
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[0fa9018] | 489 | m2_end(999); |
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[0e1846] | 490 | } |
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| 491 | |
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| 492 | pid = fork (); |
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| 493 | if (pid == 0) |
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| 494 | { |
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[bdda8c2] | 495 | si_close (0); si_dup2 (in_fd[0],0); /* set the stdin to the in pipe */ |
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| 496 | si_close (1); si_dup2 (out_fd[1],1); /* set the stdout to the out pipe */ |
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| 497 | si_close (2); si_dup2 (out_fd[1],2); /* set the stderr to the out pipe */ |
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[0e1846] | 498 | |
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| 499 | execvp (args[0], args); /* exec gdb */ |
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| 500 | perror ("exec failed"); |
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[0fa9018] | 501 | m2_end(999); |
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[0e1846] | 502 | } |
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| 503 | else if (pid == -1) |
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| 504 | { |
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| 505 | perror ("could not fork"); |
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[0fa9018] | 506 | m2_end(999); |
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[0e1846] | 507 | } |
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| 508 | |
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| 509 | FD_ZERO (&fdset); |
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| 510 | FD_SET (out_fd[0], &fdset); |
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| 511 | |
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[bdda8c2] | 512 | si_write (in_fd[1], "backtrace\n", 10); |
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| 513 | si_write (in_fd[1], "p si_stop_stack_trace_x = 0\n", 28); |
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| 514 | si_write (in_fd[1], "quit\n", 5); |
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[0e1846] | 515 | |
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| 516 | index = 0; |
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| 517 | state = 0; |
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| 518 | |
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| 519 | loop |
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| 520 | { |
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| 521 | readset = fdset; |
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| 522 | tv.tv_sec = 1; |
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| 523 | tv.tv_usec = 0; |
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| 524 | |
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[bdda8c2] | 525 | sel = si_select (FD_SETSIZE, &readset, NULL, NULL, &tv); |
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[0e1846] | 526 | if (sel == -1) |
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| 527 | break; |
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| 528 | |
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| 529 | if ((sel > 0) && (FD_ISSET (out_fd[0], &readset))) |
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| 530 | { |
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[bdda8c2] | 531 | if (si_read (out_fd[0], &c, 1)) |
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[0e1846] | 532 | { |
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| 533 | switch (state) |
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| 534 | { |
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| 535 | case 0: |
---|
| 536 | if (c == '#') |
---|
| 537 | { |
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| 538 | state = 1; |
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| 539 | index = 0; |
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| 540 | buffer[index++] = c; |
---|
| 541 | } |
---|
| 542 | break; |
---|
| 543 | case 1: |
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| 544 | buffer[index++] = c; |
---|
| 545 | if ((c == '\n') || (c == '\r')) |
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| 546 | { |
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| 547 | buffer[index] = 0; |
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| 548 | fprintf (stderr, "%s", buffer); |
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| 549 | state = 0; |
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| 550 | index = 0; |
---|
| 551 | } |
---|
| 552 | break; |
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| 553 | default: |
---|
| 554 | break; |
---|
| 555 | } |
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| 556 | } |
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| 557 | } |
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[ccae2f] | 558 | else if (si_stop_stack_trace_x==0) |
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[0e1846] | 559 | break; |
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| 560 | } |
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| 561 | |
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[bdda8c2] | 562 | si_close (in_fd[0]); |
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| 563 | si_close (in_fd[1]); |
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| 564 | si_close (out_fd[0]); |
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| 565 | si_close (out_fd[1]); |
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[0fa9018] | 566 | m2_end(0); |
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[0e1846] | 567 | } |
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| 568 | |
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[d5bd816] | 569 | # endif /* !__OPTIMIZE__ */ |
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| 570 | #endif /* unix */ |
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[dc0898] | 571 | |
---|
[751785e] | 572 | /*2 |
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| 573 | * init signal handlers |
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| 574 | */ |
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| 575 | void init_signals() |
---|
| 576 | { |
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[60596c] | 577 | #ifdef SIGSEGV |
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[751785e] | 578 | si_set_signal(SIGSEGV,(si_hdl_typ)sigsegv_handler); |
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[60596c] | 579 | #endif |
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| 580 | #ifdef SIGBUS |
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| 581 | si_set_signal(SIGBUS, (si_hdl_typ)sigsegv_handler); |
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| 582 | #endif |
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| 583 | #ifdef SIGFPE |
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[751785e] | 584 | si_set_signal(SIGFPE, (si_hdl_typ)sigsegv_handler); |
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[60596c] | 585 | #endif |
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| 586 | #ifdef SIGILL |
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[751785e] | 587 | si_set_signal(SIGILL, (si_hdl_typ)sigsegv_handler); |
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[60596c] | 588 | #endif |
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| 589 | #ifdef SIGIOT |
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[751785e] | 590 | si_set_signal(SIGIOT, (si_hdl_typ)sigsegv_handler); |
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[60596c] | 591 | #endif |
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[751785e] | 592 | si_set_signal(SIGINT ,(si_hdl_typ)sigint_handler); |
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| 593 | si_set_signal(SIGCHLD, (si_hdl_typ)sig_chld_hdl); |
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| 594 | si_set_signal(SIGPIPE, (si_hdl_typ)sig_pipe_hdl); |
---|
| 595 | si_set_signal(SIGTERM, (si_hdl_typ)sig_term_hdl); |
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[dc0898] | 596 | } |
---|
[751785e] | 597 | |
---|