Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 524b588 | 1995-01-04 19:10:35 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 3bbc62e | 1995-01-02 19:30:30 +0000 | [diff] [blame] | 32 | /* Signal module -- many thanks to Lance Ellinghaus */ |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 33 | |
Guido van Rossum | 644a12b | 1997-04-09 19:24:53 +0000 | [diff] [blame] | 34 | /* XXX Signals should be recorded per thread, now we have thread state. */ |
| 35 | |
Guido van Rossum | 602099a | 1994-09-14 13:32:22 +0000 | [diff] [blame] | 36 | #include "Python.h" |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 37 | #include "intrcheck.h" |
| 38 | |
Guido van Rossum | 644a12b | 1997-04-09 19:24:53 +0000 | [diff] [blame] | 39 | #ifdef MS_WIN32 |
| 40 | #include <process.h> |
| 41 | #endif |
| 42 | |
Guido van Rossum | a376cc5 | 1996-12-05 23:43:35 +0000 | [diff] [blame] | 43 | #ifdef HAVE_UNISTD_H |
| 44 | #include <unistd.h> |
| 45 | #endif |
| 46 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 47 | #include <signal.h> |
| 48 | |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 49 | #ifndef SIG_ERR |
| 50 | #define SIG_ERR ((RETSIGTYPE (*)())-1) |
| 51 | #endif |
| 52 | |
Guido van Rossum | 3bbc62e | 1995-01-02 19:30:30 +0000 | [diff] [blame] | 53 | #ifndef NSIG |
Guido van Rossum | c1cc8ab | 1997-02-14 16:35:36 +0000 | [diff] [blame] | 54 | #ifdef _SIGMAX |
Guido van Rossum | 3bbc62e | 1995-01-02 19:30:30 +0000 | [diff] [blame] | 55 | #define NSIG (_SIGMAX + 1) /* For QNX */ |
Guido van Rossum | c1cc8ab | 1997-02-14 16:35:36 +0000 | [diff] [blame] | 56 | #else |
| 57 | #define NSIG (SIGMAX + 1) /* for djgpp */ |
| 58 | #endif |
Guido van Rossum | 3bbc62e | 1995-01-02 19:30:30 +0000 | [diff] [blame] | 59 | #endif |
| 60 | |
| 61 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 62 | |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 63 | /* |
| 64 | NOTES ON THE INTERACTION BETWEEN SIGNALS AND THREADS |
| 65 | |
| 66 | When threads are supported, we want the following semantics: |
| 67 | |
| 68 | - only the main thread can set a signal handler |
| 69 | - any thread can get a signal handler |
| 70 | - signals are only delivered to the main thread |
| 71 | |
| 72 | I.e. we don't support "synchronous signals" like SIGFPE (catching |
| 73 | this doesn't make much sense in Python anyway) nor do we support |
| 74 | signals as a means of inter-thread communication, since not all |
| 75 | thread implementations support that (at least our thread library |
| 76 | doesn't). |
| 77 | |
| 78 | We still have the problem that in some implementations signals |
| 79 | generated by the keyboard (e.g. SIGINT) are delivered to all |
| 80 | threads (e.g. SGI), while in others (e.g. Solaris) such signals are |
| 81 | delivered to one random thread (an intermediate possibility would |
Guido van Rossum | a3c04b0 | 1995-01-12 11:29:01 +0000 | [diff] [blame] | 82 | be to deliver it to the main thread -- POSIX?). For now, we have |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 83 | a working implementation that works in all three cases -- the |
| 84 | handler ignores signals if getpid() isn't the same as in the main |
| 85 | thread. XXX This is a hack. |
| 86 | |
| 87 | */ |
| 88 | |
| 89 | #ifdef WITH_THREAD |
| 90 | #include "thread.h" |
| 91 | static long main_thread; |
| 92 | static pid_t main_pid; |
| 93 | #endif |
| 94 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 95 | static struct { |
| 96 | int tripped; |
| 97 | PyObject *func; |
| 98 | } Handlers[NSIG]; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 99 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 100 | static int is_tripped = 0; /* Speed up sigcheck() when none tripped */ |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 101 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 102 | static PyObject *DefaultHandler; |
| 103 | static PyObject *IgnoreHandler; |
| 104 | static PyObject *IntHandler; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 105 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 106 | |
| 107 | |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 108 | static PyObject * |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 109 | signal_default_int_handler(self, arg) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 110 | PyObject *self; |
| 111 | PyObject *arg; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 112 | { |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 113 | PyErr_SetNone(PyExc_KeyboardInterrupt); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 114 | return NULL; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 115 | } |
| 116 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 117 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 118 | static RETSIGTYPE |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 119 | signal_handler(sig_num) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 120 | int sig_num; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 121 | { |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 122 | #ifdef WITH_THREAD |
| 123 | /* See NOTES section above */ |
| 124 | if (getpid() == main_pid) { |
| 125 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 126 | is_tripped++; |
| 127 | Handlers[sig_num].tripped = 1; |
Guido van Rossum | 644a12b | 1997-04-09 19:24:53 +0000 | [diff] [blame] | 128 | Py_AddPendingCall( |
| 129 | (int (*) Py_PROTO((ANY *)))PyErr_CheckSignals, NULL); |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 130 | #ifdef WITH_THREAD |
| 131 | } |
| 132 | #endif |
Guido van Rossum | 602099a | 1994-09-14 13:32:22 +0000 | [diff] [blame] | 133 | #ifdef SIGCHLD |
| 134 | if (sig_num == SIGCHLD) { |
| 135 | /* To avoid infinite recursion, this signal remains |
| 136 | reset until explicit re-instated. |
| 137 | Don't clear the 'func' field as it is our pointer |
| 138 | to the Python handler... */ |
| 139 | return; |
| 140 | } |
| 141 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 142 | (void *)signal(sig_num, &signal_handler); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 143 | } |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 144 | |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 145 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 146 | |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 147 | #ifndef DONT_HAVE_SIG_ALARM |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 148 | static PyObject * |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 149 | signal_alarm(self, args) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 150 | PyObject *self; /* Not used */ |
| 151 | PyObject *args; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 152 | { |
| 153 | int t; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 154 | if (!PyArg_Parse(args, "i", &t)) |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 155 | return NULL; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 156 | /* alarm() returns the number of seconds remaining */ |
| 157 | return PyInt_FromLong(alarm(t)); |
Guido van Rossum | aa0f4c7 | 1994-08-23 13:49:37 +0000 | [diff] [blame] | 158 | } |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 159 | #endif |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 160 | |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 161 | #ifndef DONT_HAVE_SIG_PAUSE |
Guido van Rossum | a597dde | 1995-01-10 20:56:29 +0000 | [diff] [blame] | 162 | static PyObject * |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 163 | signal_pause(self, args) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 164 | PyObject *self; /* Not used */ |
| 165 | PyObject *args; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 166 | { |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 167 | if (!PyArg_NoArgs(args)) |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 168 | return NULL; |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 169 | |
Guido van Rossum | a597dde | 1995-01-10 20:56:29 +0000 | [diff] [blame] | 170 | Py_BEGIN_ALLOW_THREADS |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 171 | (void)pause(); |
Guido van Rossum | a597dde | 1995-01-10 20:56:29 +0000 | [diff] [blame] | 172 | Py_END_ALLOW_THREADS |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 173 | /* make sure that any exceptions that got raised are propagated |
| 174 | * back into Python |
| 175 | */ |
| 176 | if (PyErr_CheckSignals()) |
| 177 | return NULL; |
| 178 | |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 179 | Py_INCREF(Py_None); |
| 180 | return Py_None; |
| 181 | } |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 182 | #endif |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 183 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 184 | |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 185 | static PyObject * |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 186 | signal_signal(self, args) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 187 | PyObject *self; /* Not used */ |
| 188 | PyObject *args; |
| 189 | { |
| 190 | PyObject *obj; |
| 191 | int sig_num; |
| 192 | PyObject *old_handler; |
| 193 | RETSIGTYPE (*func)(); |
| 194 | if (!PyArg_Parse(args, "(iO)", &sig_num, &obj)) |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 195 | return NULL; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 196 | #ifdef WITH_THREAD |
| 197 | if (get_thread_ident() != main_thread) { |
Guido van Rossum | f4b012a | 1995-03-16 15:43:29 +0000 | [diff] [blame] | 198 | PyErr_SetString(PyExc_ValueError, |
| 199 | "signal only works in main thread"); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 200 | return NULL; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 201 | } |
| 202 | #endif |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 203 | if (sig_num < 1 || sig_num >= NSIG) { |
Guido van Rossum | f4b012a | 1995-03-16 15:43:29 +0000 | [diff] [blame] | 204 | PyErr_SetString(PyExc_ValueError, |
| 205 | "signal number out of range"); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 206 | return NULL; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 207 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 208 | if (obj == IgnoreHandler) |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 209 | func = SIG_IGN; |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 210 | else if (obj == DefaultHandler) |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 211 | func = SIG_DFL; |
Guido van Rossum | f4b012a | 1995-03-16 15:43:29 +0000 | [diff] [blame] | 212 | else if (!PyCallable_Check(obj)) { |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 213 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 214 | "signal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable object"); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 215 | return NULL; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 216 | } |
| 217 | else |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 218 | func = signal_handler; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 219 | if (signal(sig_num, func) == SIG_ERR) { |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 220 | PyErr_SetFromErrno(PyExc_RuntimeError); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 221 | return NULL; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 222 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 223 | old_handler = Handlers[sig_num].func; |
| 224 | Handlers[sig_num].tripped = 0; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 225 | Py_INCREF(obj); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 226 | Handlers[sig_num].func = obj; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 227 | return old_handler; |
| 228 | } |
| 229 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 230 | |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 231 | static PyObject * |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 232 | signal_get_signal(self, args) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 233 | PyObject *self; /* Not used */ |
| 234 | PyObject *args; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 235 | { |
| 236 | int sig_num; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 237 | PyObject *old_handler; |
| 238 | if (!PyArg_Parse(args, "i", &sig_num)) |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 239 | return NULL; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 240 | if (sig_num < 1 || sig_num >= NSIG) { |
Guido van Rossum | f4b012a | 1995-03-16 15:43:29 +0000 | [diff] [blame] | 241 | PyErr_SetString(PyExc_ValueError, |
| 242 | "signal number out of range"); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 243 | return NULL; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 244 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 245 | old_handler = Handlers[sig_num].func; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 246 | Py_INCREF(old_handler); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 247 | return old_handler; |
| 248 | } |
| 249 | |
| 250 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 251 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 252 | /* List of functions defined in the module */ |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 253 | static PyMethodDef signal_methods[] = { |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 254 | #ifndef DONT_HAVE_SIG_ALARM |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 255 | {"alarm", signal_alarm}, |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 256 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 257 | {"signal", signal_signal}, |
| 258 | {"getsignal", signal_get_signal}, |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 259 | #ifndef DONT_HAVE_SIG_PAUSE |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 260 | {"pause", signal_pause}, |
Guido van Rossum | 06d511d | 1995-03-10 15:13:48 +0000 | [diff] [blame] | 261 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 262 | {"default_int_handler", signal_default_int_handler}, |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 263 | {NULL, NULL} /* sentinel */ |
| 264 | }; |
| 265 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 266 | |
| 267 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 268 | void |
| 269 | initsignal() |
| 270 | { |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 271 | PyObject *m, *d, *x; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 272 | int i; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 273 | |
| 274 | #ifdef WITH_THREAD |
| 275 | main_thread = get_thread_ident(); |
| 276 | main_pid = getpid(); |
| 277 | #endif |
| 278 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 279 | /* Create the module and add the functions */ |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 280 | m = Py_InitModule("signal", signal_methods); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 281 | |
| 282 | /* Add some symbolic constants to the module */ |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 283 | d = PyModule_GetDict(m); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 284 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 285 | x = DefaultHandler = PyInt_FromLong((long)SIG_DFL); |
| 286 | if (!x || PyDict_SetItemString(d, "SIG_DFL", x) < 0) |
| 287 | goto finally; |
| 288 | Py_DECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 289 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 290 | x = IgnoreHandler = PyInt_FromLong((long)SIG_IGN); |
| 291 | if (!x || PyDict_SetItemString(d, "SIG_IGN", x) < 0) |
| 292 | goto finally; |
| 293 | |
| 294 | x = PyInt_FromLong((long)NSIG); |
| 295 | if (!x || PyDict_SetItemString(d, "NSIG", x) < 0) |
| 296 | goto finally; |
| 297 | |
| 298 | x = IntHandler = PyDict_GetItemString(d, "default_int_handler"); |
| 299 | if (!x) |
| 300 | goto finally; |
| 301 | |
| 302 | Handlers[0].tripped = 0; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 303 | for (i = 1; i < NSIG; i++) { |
Guido van Rossum | 6299d1e | 1994-05-31 12:51:13 +0000 | [diff] [blame] | 304 | RETSIGTYPE (*t)(); |
Guido van Rossum | fb0df94 | 1996-05-23 22:55:35 +0000 | [diff] [blame] | 305 | #ifdef HAVE_SIGACTION |
| 306 | struct sigaction act; |
| 307 | sigaction(i, 0, &act); |
Guido van Rossum | 1835c4f | 1996-05-29 14:15:19 +0000 | [diff] [blame] | 308 | t = act.sa_handler; |
Guido van Rossum | fb0df94 | 1996-05-23 22:55:35 +0000 | [diff] [blame] | 309 | #else |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 310 | t = signal(i, SIG_IGN); |
| 311 | signal(i, t); |
Guido van Rossum | fb0df94 | 1996-05-23 22:55:35 +0000 | [diff] [blame] | 312 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 313 | Handlers[i].tripped = 0; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 314 | if (t == SIG_DFL) |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 315 | Handlers[i].func = DefaultHandler; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 316 | else if (t == SIG_IGN) |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 317 | Handlers[i].func = IgnoreHandler; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 318 | else |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 319 | Handlers[i].func = Py_None; /* None of our business */ |
| 320 | Py_INCREF(Handlers[i].func); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 321 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 322 | if (Handlers[SIGINT].func == DefaultHandler) { |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 323 | /* Install default int handler */ |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 324 | Py_DECREF(Handlers[SIGINT].func); |
| 325 | Handlers[SIGINT].func = IntHandler; |
| 326 | Py_INCREF(IntHandler); |
| 327 | signal(SIGINT, &signal_handler); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | #ifdef SIGHUP |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 331 | x = PyInt_FromLong(SIGHUP); |
| 332 | PyDict_SetItemString(d, "SIGHUP", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 333 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 334 | #endif |
| 335 | #ifdef SIGINT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 336 | x = PyInt_FromLong(SIGINT); |
| 337 | PyDict_SetItemString(d, "SIGINT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 338 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 339 | #endif |
| 340 | #ifdef SIGQUIT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 341 | x = PyInt_FromLong(SIGQUIT); |
| 342 | PyDict_SetItemString(d, "SIGQUIT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 343 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 344 | #endif |
| 345 | #ifdef SIGILL |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 346 | x = PyInt_FromLong(SIGILL); |
| 347 | PyDict_SetItemString(d, "SIGILL", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 348 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 349 | #endif |
| 350 | #ifdef SIGTRAP |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 351 | x = PyInt_FromLong(SIGTRAP); |
| 352 | PyDict_SetItemString(d, "SIGTRAP", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 353 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 354 | #endif |
| 355 | #ifdef SIGIOT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 356 | x = PyInt_FromLong(SIGIOT); |
| 357 | PyDict_SetItemString(d, "SIGIOT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 358 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 359 | #endif |
| 360 | #ifdef SIGABRT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 361 | x = PyInt_FromLong(SIGABRT); |
| 362 | PyDict_SetItemString(d, "SIGABRT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 363 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 364 | #endif |
| 365 | #ifdef SIGEMT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 366 | x = PyInt_FromLong(SIGEMT); |
| 367 | PyDict_SetItemString(d, "SIGEMT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 368 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 369 | #endif |
| 370 | #ifdef SIGFPE |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 371 | x = PyInt_FromLong(SIGFPE); |
| 372 | PyDict_SetItemString(d, "SIGFPE", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 373 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 374 | #endif |
| 375 | #ifdef SIGKILL |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 376 | x = PyInt_FromLong(SIGKILL); |
| 377 | PyDict_SetItemString(d, "SIGKILL", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 378 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 379 | #endif |
| 380 | #ifdef SIGBUS |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 381 | x = PyInt_FromLong(SIGBUS); |
| 382 | PyDict_SetItemString(d, "SIGBUS", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 383 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 384 | #endif |
| 385 | #ifdef SIGSEGV |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 386 | x = PyInt_FromLong(SIGSEGV); |
| 387 | PyDict_SetItemString(d, "SIGSEGV", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 388 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 389 | #endif |
| 390 | #ifdef SIGSYS |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 391 | x = PyInt_FromLong(SIGSYS); |
| 392 | PyDict_SetItemString(d, "SIGSYS", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 393 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 394 | #endif |
| 395 | #ifdef SIGPIPE |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 396 | x = PyInt_FromLong(SIGPIPE); |
| 397 | PyDict_SetItemString(d, "SIGPIPE", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 398 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 399 | #endif |
| 400 | #ifdef SIGALRM |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 401 | x = PyInt_FromLong(SIGALRM); |
| 402 | PyDict_SetItemString(d, "SIGALRM", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 403 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 404 | #endif |
| 405 | #ifdef SIGTERM |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 406 | x = PyInt_FromLong(SIGTERM); |
| 407 | PyDict_SetItemString(d, "SIGTERM", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 408 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 409 | #endif |
| 410 | #ifdef SIGUSR1 |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 411 | x = PyInt_FromLong(SIGUSR1); |
| 412 | PyDict_SetItemString(d, "SIGUSR1", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 413 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 414 | #endif |
| 415 | #ifdef SIGUSR2 |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 416 | x = PyInt_FromLong(SIGUSR2); |
| 417 | PyDict_SetItemString(d, "SIGUSR2", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 418 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 419 | #endif |
| 420 | #ifdef SIGCLD |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 421 | x = PyInt_FromLong(SIGCLD); |
| 422 | PyDict_SetItemString(d, "SIGCLD", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 423 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 424 | #endif |
| 425 | #ifdef SIGCHLD |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 426 | x = PyInt_FromLong(SIGCHLD); |
| 427 | PyDict_SetItemString(d, "SIGCHLD", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 428 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 429 | #endif |
| 430 | #ifdef SIGPWR |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 431 | x = PyInt_FromLong(SIGPWR); |
| 432 | PyDict_SetItemString(d, "SIGPWR", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 433 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 434 | #endif |
| 435 | #ifdef SIGIO |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 436 | x = PyInt_FromLong(SIGIO); |
| 437 | PyDict_SetItemString(d, "SIGIO", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 438 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 439 | #endif |
| 440 | #ifdef SIGURG |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 441 | x = PyInt_FromLong(SIGURG); |
| 442 | PyDict_SetItemString(d, "SIGURG", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 443 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 444 | #endif |
| 445 | #ifdef SIGWINCH |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 446 | x = PyInt_FromLong(SIGWINCH); |
| 447 | PyDict_SetItemString(d, "SIGWINCH", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 448 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 449 | #endif |
| 450 | #ifdef SIGPOLL |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 451 | x = PyInt_FromLong(SIGPOLL); |
| 452 | PyDict_SetItemString(d, "SIGPOLL", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 453 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 454 | #endif |
| 455 | #ifdef SIGSTOP |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 456 | x = PyInt_FromLong(SIGSTOP); |
| 457 | PyDict_SetItemString(d, "SIGSTOP", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 458 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 459 | #endif |
| 460 | #ifdef SIGTSTP |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 461 | x = PyInt_FromLong(SIGTSTP); |
| 462 | PyDict_SetItemString(d, "SIGTSTP", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 463 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 464 | #endif |
| 465 | #ifdef SIGCONT |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 466 | x = PyInt_FromLong(SIGCONT); |
| 467 | PyDict_SetItemString(d, "SIGCONT", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 468 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 469 | #endif |
| 470 | #ifdef SIGTTIN |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 471 | x = PyInt_FromLong(SIGTTIN); |
| 472 | PyDict_SetItemString(d, "SIGTTIN", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 473 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 474 | #endif |
| 475 | #ifdef SIGTTOU |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 476 | x = PyInt_FromLong(SIGTTOU); |
| 477 | PyDict_SetItemString(d, "SIGTTOU", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 478 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 479 | #endif |
| 480 | #ifdef SIGVTALRM |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 481 | x = PyInt_FromLong(SIGVTALRM); |
| 482 | PyDict_SetItemString(d, "SIGVTALRM", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 483 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 484 | #endif |
| 485 | #ifdef SIGPROF |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 486 | x = PyInt_FromLong(SIGPROF); |
| 487 | PyDict_SetItemString(d, "SIGPROF", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 488 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 489 | #endif |
Barry Warsaw | 14ed5fb | 1996-12-16 20:24:22 +0000 | [diff] [blame] | 490 | #ifdef SIGXCPU |
| 491 | x = PyInt_FromLong(SIGXCPU); |
| 492 | PyDict_SetItemString(d, "SIGXCPU", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 493 | Py_XDECREF(x); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 494 | #endif |
Barry Warsaw | 14ed5fb | 1996-12-16 20:24:22 +0000 | [diff] [blame] | 495 | #ifdef SIGXFSZ |
| 496 | x = PyInt_FromLong(SIGXFSZ); |
| 497 | PyDict_SetItemString(d, "SIGXFSZ", x); |
Barry Warsaw | 73a75eb | 1997-01-09 23:50:28 +0000 | [diff] [blame] | 498 | Py_XDECREF(x); |
Barry Warsaw | 14ed5fb | 1996-12-16 20:24:22 +0000 | [diff] [blame] | 499 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 500 | if (!PyErr_Occurred()) |
| 501 | return; |
| 502 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 503 | /* Check for errors */ |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 504 | finally: |
| 505 | Py_FatalError("can't initialize module signal"); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 506 | } |
| 507 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 508 | |
| 509 | |
| 510 | /* Declared in pyerrors.h */ |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 511 | int |
Guido van Rossum | ec25b91 | 1995-01-22 00:46:57 +0000 | [diff] [blame] | 512 | PyErr_CheckSignals() |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 513 | { |
| 514 | int i; |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 515 | PyObject *f; |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 516 | |
| 517 | if (!is_tripped) |
Guido van Rossum | 6299d1e | 1994-05-31 12:51:13 +0000 | [diff] [blame] | 518 | return 0; |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 519 | #ifdef WITH_THREAD |
| 520 | if (get_thread_ident() != main_thread) |
| 521 | return 0; |
| 522 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 523 | if (!(f = PyEval_GetFrame())) |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 524 | f = Py_None; |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 525 | |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 526 | for (i = 1; i < NSIG; i++) { |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 527 | if (Handlers[i].tripped) { |
| 528 | PyObject *result = NULL; |
| 529 | PyObject *arglist = Py_BuildValue("(iO)", i, f); |
| 530 | Handlers[i].tripped = 0; |
| 531 | |
| 532 | if (arglist) { |
| 533 | result = PyEval_CallObject(Handlers[i].func, |
| 534 | arglist); |
Guido van Rossum | e4485b0 | 1994-09-07 14:32:49 +0000 | [diff] [blame] | 535 | Py_DECREF(arglist); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 536 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 537 | if (!result) |
Guido van Rossum | fcdd0e4 | 1997-01-21 06:13:09 +0000 | [diff] [blame] | 538 | return -1; |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 539 | |
| 540 | Py_DECREF(result); |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 541 | } |
| 542 | } |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 543 | is_tripped = 0; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 544 | return 0; |
| 545 | } |
| 546 | |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 547 | |
| 548 | /* Replacements for intrcheck.c functionality |
| 549 | * Declared in pyerrors.h |
| 550 | */ |
| 551 | void |
| 552 | PyErr_SetInterrupt() |
| 553 | { |
| 554 | is_tripped++; |
| 555 | Handlers[SIGINT].tripped = 1; |
Guido van Rossum | fcdd0e4 | 1997-01-21 06:13:09 +0000 | [diff] [blame] | 556 | Py_AddPendingCall((int (*) Py_PROTO((ANY *)))PyErr_CheckSignals, NULL); |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 557 | } |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 558 | |
| 559 | void |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 560 | PyOS_InitInterrupts() |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 561 | { |
| 562 | initsignal(); |
| 563 | } |
| 564 | |
| 565 | int |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 566 | PyOS_InterruptOccurred() |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 567 | { |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 568 | if (Handlers[SIGINT].tripped) { |
Guido van Rossum | bb4ba12 | 1994-06-23 11:25:45 +0000 | [diff] [blame] | 569 | #ifdef WITH_THREAD |
| 570 | if (get_thread_ident() != main_thread) |
| 571 | return 0; |
| 572 | #endif |
Barry Warsaw | 9297117 | 1997-01-03 00:14:25 +0000 | [diff] [blame] | 573 | Handlers[SIGINT].tripped = 0; |
Guido van Rossum | 6299d1e | 1994-05-31 12:51:13 +0000 | [diff] [blame] | 574 | return 1; |
| 575 | } |
| 576 | return 0; |
Guido van Rossum | 398d9fe | 1994-05-11 08:59:13 +0000 | [diff] [blame] | 577 | } |