Mercurial > hg > octave-lyh
annotate libinterp/interpfcn/toplev.h @ 16485:8b783661e03f
improve exit sequence for GUI
* octave-link.h, octave-link.cc (octave_link::accepting_events):
Delete variable and all uses.
(octave_link::link_enabled): New data member.
(octave_link::octave_link): Don't set octave_exit. Initialize
link_enabled.
(octave_link::do_exit): Delete definition. Now pure virtual.
Return bool.
(octave_link::exit): Call instance->do_exit.
(octave_link::enabled): New function.
(ocave_link::process_events): New arg, disable. Optionally disable
event processing.
Use octave_link::enabled instead of instance_ok everywhere except for
octave_link::exit.
(octave_link::cleanup_instance): Delete.
* octave-qt-link.h, octave-qt-link.cc
(octave_qt_link::octave_qt_link): Accept thread as argument.
Don't connect main_thread::finished signal.
(octave_qt_link::~octave_qt_link): Don't delete main_thread.
(octave_qt_link::do_exit): Emit exit_signal and return true.
(octave_qt_link::exit_signal: New signal.
(octave_qt_link::void octave_thread_finished_signal): Delete.
* main-window.h, main-window.cc (main_window::_octave_main_thread):
New member variable.
(main_window::main_window): Initialize _octave_main_thread and
_octave_qt_link to 0.
(main_window::~main_window): Don't call octave_link::connect_link.
Delete _octave_main_thread.
(main_window::exit): Accept exit status as argument and call
QApplication::exit instead of quit.
(main_window::construct): Don't connect qApp::aboutToQuit to
main_window::prepare_to_exit.
(main_window::construct_octave_qt_link): Create _octave_main_thread
and pass to _octave_qt_link. Don't connect
_octave_qt_link::octave_thread_finished to main_window::exit.
Connect _octave_qt_link::exit_signal to main_window::exit.
* toplev.h, toplev.cc (main_loop): If quitting_gracefully, just return
exit status instead of calling clean_up_and_exit.
(do_octave_atexit): Now static. Call octave_link::process_events with
disable arg set to true.
(octave_atexit_functions): Now static.
(clean_up_and_exit): New argument, safe_to_return.
Call octave_link::exit and possibly return or wait for
octave_link::exit to terminate the process.
* octave.cc (octave_execute_interpreter): Don't alter return value
from main_loop. Pass safe_to_return = true to clean_up_and_exit.
Return retval instead of 0.
(octave_initialize_interpreter): Don't call atexit.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 09 Apr 2013 23:08:24 -0400 |
parents | fb27f1e08297 |
children |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2012 John W. Eaton |
1 | 4 |
5 This file is part of Octave. | |
6 | |
7 Octave is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
10 option) any later version. | |
1 | 11 |
12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
1 | 20 |
21 */ | |
22 | |
1670 | 23 #if !defined (octave_toplev_h) |
24 #define octave_toplev_h 1 | |
1 | 25 |
1355 | 26 #include <cstdio> |
1 | 27 |
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28 #include <deque> |
3503 | 29 #include <string> |
30 | |
2086 | 31 class octave_value; |
2796 | 32 class octave_value_list; |
5743 | 33 class octave_function; |
5744 | 34 class octave_user_script; |
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35 class tree_statement; |
578 | 36 class tree_statement_list; |
1572 | 37 class charMatrix; |
1 | 38 |
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39 #include "quit.h" |
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40 |
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41 #include "input.h" |
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42 #include "oct-map.h" |
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43 |
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44 |
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45 typedef void (*octave_exit_func) (int); |
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46 extern OCTINTERP_API octave_exit_func octave_exit; |
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47 |
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48 extern OCTINTERP_API bool quit_allowed; |
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49 |
9383 | 50 extern OCTINTERP_API bool quitting_gracefully; |
51 | |
52 extern OCTINTERP_API int exit_status; | |
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53 |
7250 | 54 extern OCTINTERP_API void |
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55 clean_up_and_exit (int status, bool safe_to_return = false); |
574 | 56 |
7250 | 57 extern OCTINTERP_API void recover_from_exception (void); |
7202 | 58 |
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59 extern OCTINTERP_API int main_loop (void); |
1907 | 60 |
7250 | 61 extern OCTINTERP_API void |
7409 | 62 octave_add_atexit_function (const std::string& fname); |
63 | |
64 extern OCTINTERP_API bool | |
65 octave_remove_atexit_function (const std::string& fname); | |
66 | |
4217 | 67 // TRUE means we are ready to interpret commands, but not everything |
68 // is ready for interactive use. | |
7185 | 69 extern OCTINTERP_API bool octave_interpreter_ready; |
4217 | 70 |
4172 | 71 // TRUE means we've processed all the init code and we are good to go. |
7185 | 72 extern OCTINTERP_API bool octave_initialized; |
4172 | 73 |
5743 | 74 class |
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75 OCTINTERP_API |
5743 | 76 octave_call_stack |
77 { | |
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78 private: |
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79 |
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80 struct call_stack_elt |
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81 { |
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82 call_stack_elt (octave_function *f, symbol_table::scope_id s, |
10313 | 83 symbol_table::context_id c, size_t p = 0) |
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84 : fcn (f), line (-1), column (-1), scope (s), context (c), prev (p) |
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85 { } |
7901 | 86 |
87 call_stack_elt (const call_stack_elt& elt) | |
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88 : fcn (elt.fcn), line (elt.line), column (elt.column), |
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89 scope (elt.scope), context (elt.context), prev (elt.prev) |
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90 { } |
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91 |
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92 octave_function *fcn; |
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93 int line; |
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94 int column; |
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95 symbol_table::scope_id scope; |
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96 symbol_table::context_id context; |
7901 | 97 size_t prev; |
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98 }; |
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99 |
5743 | 100 protected: |
101 | |
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102 octave_call_stack (void) : cs (), curr_frame (0) { } |
5743 | 103 |
104 public: | |
105 | |
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106 typedef std::deque<call_stack_elt>::iterator iterator; |
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107 typedef std::deque<call_stack_elt>::const_iterator const_iterator; |
7901 | 108 |
109 typedef std::deque<call_stack_elt>::reverse_iterator reverse_iterator; | |
110 typedef std::deque<call_stack_elt>::const_reverse_iterator const_reverse_iterator; | |
111 | |
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112 static void create_instance (void); |
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113 |
5743 | 114 static bool instance_ok (void) |
115 { | |
116 bool retval = true; | |
117 | |
118 if (! instance) | |
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119 create_instance (); |
5743 | 120 |
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121 if (! instance) |
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122 { |
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123 ::error ("unable to create call stack object!"); |
5743 | 124 |
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125 retval = false; |
5743 | 126 } |
127 | |
128 return retval; | |
129 } | |
130 | |
131 // Current function (top of stack). | |
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132 static octave_function *current (void) |
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133 { |
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134 return instance_ok () ? instance->do_current () : 0; |
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135 } |
5743 | 136 |
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137 // Current line in current function. |
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138 static int current_line (void) |
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139 { |
7877 | 140 return instance_ok () ? instance->do_current_line () : -1; |
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141 } |
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142 |
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143 // Current column in current function. |
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144 static int current_column (void) |
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145 { |
7877 | 146 return instance_ok () ? instance->do_current_column () : -1; |
147 } | |
148 | |
149 // Line in user code caller. | |
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150 static int caller_user_code_line (void) |
7877 | 151 { |
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152 return instance_ok () ? instance->do_caller_user_code_line () : -1; |
7877 | 153 } |
154 | |
155 // Column in user code caller. | |
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156 static int caller_user_code_column (void) |
7877 | 157 { |
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158 return instance_ok () ? instance->do_caller_user_code_column () : -1; |
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159 } |
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160 |
5743 | 161 // Caller function, may be built-in. |
162 static octave_function *caller (void) | |
163 { | |
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164 return instance_ok () ? instance->do_caller () : 0; |
5743 | 165 } |
166 | |
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167 static size_t current_frame (void) |
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168 { |
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169 return instance_ok () ? instance->do_current_frame () : 0; |
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170 } |
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171 |
7890 | 172 static size_t size (void) |
173 { | |
174 return instance_ok () ? instance->do_size () : 0; | |
175 } | |
176 | |
7901 | 177 static size_t num_user_code_frames (octave_idx_type& curr_user_frame) |
178 { | |
179 return instance_ok () | |
180 ? instance->do_num_user_code_frames (curr_user_frame) : 0; | |
181 } | |
182 | |
183 static symbol_table::scope_id current_scope (void) | |
184 { | |
185 return instance_ok () ? instance->do_current_scope () : 0; | |
186 } | |
187 | |
188 static symbol_table::context_id current_context (void) | |
189 { | |
190 return instance_ok () ? instance->do_current_context () : 0; | |
191 } | |
192 | |
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193 // Function at location N on the call stack (N == 0 is current), may |
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194 // be built-in. |
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195 static octave_function *element (size_t n) |
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196 { |
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197 return instance_ok () ? instance->do_element (n) : 0; |
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198 } |
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199 |
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200 // First user-defined function on the stack. |
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201 static octave_user_code *caller_user_code (size_t nskip = 0) |
5743 | 202 { |
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203 return instance_ok () ? instance->do_caller_user_code (nskip) : 0; |
5743 | 204 } |
205 | |
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206 static void |
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207 push (octave_function *f, |
10313 | 208 symbol_table::scope_id scope = symbol_table::current_scope (), |
209 symbol_table::context_id context = symbol_table::current_context ()) | |
5743 | 210 { |
211 if (instance_ok ()) | |
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212 instance->do_push (f, scope, context); |
5743 | 213 } |
214 | |
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215 static void |
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216 push (symbol_table::scope_id scope = symbol_table::current_scope (), |
10313 | 217 symbol_table::context_id context = symbol_table::current_context ()) |
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218 { |
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219 if (instance_ok ()) |
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220 instance->do_push (0, scope, context); |
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221 } |
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222 |
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223 static void set_location (int l, int c) |
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224 { |
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225 if (instance_ok ()) |
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226 instance->do_set_location (l, c); |
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227 } |
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228 |
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229 static void set_line (int l) |
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230 { |
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231 if (instance_ok ()) |
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232 instance->do_set_line (l); |
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233 } |
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234 |
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235 static void set_column (int c) |
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236 { |
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237 if (instance_ok ()) |
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238 instance->do_set_column (c); |
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239 } |
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240 |
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241 static bool goto_frame (size_t n = 0, bool verbose = false) |
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242 { |
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243 return instance_ok () ? instance->do_goto_frame (n, verbose) : false; |
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244 } |
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245 |
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246 static void restore_frame (size_t n) |
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247 { |
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248 goto_frame (n); |
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249 } |
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250 |
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251 static bool goto_frame_relative (int n, bool verbose = false) |
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252 { |
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253 return instance_ok () |
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254 ? instance->do_goto_frame_relative (n, verbose) : false; |
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255 } |
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256 |
7901 | 257 static void goto_caller_frame (void) |
258 { | |
259 if (instance_ok ()) | |
260 instance->do_goto_caller_frame (); | |
261 } | |
262 | |
263 static void goto_base_frame (void) | |
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264 { |
7901 | 265 if (instance_ok ()) |
266 instance->do_goto_base_frame (); | |
267 } | |
268 | |
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269 static octave_map backtrace (size_t nskip, octave_idx_type& curr_user_frame) |
7901 | 270 { |
271 return instance_ok () | |
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272 ? instance->do_backtrace (nskip, curr_user_frame) : octave_map (); |
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273 } |
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274 |
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275 static octave_map empty_backtrace (void); |
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276 |
5743 | 277 static void pop (void) |
278 { | |
279 if (instance_ok ()) | |
280 instance->do_pop (); | |
281 } | |
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282 |
5743 | 283 static void clear (void) |
284 { | |
285 if (instance_ok ()) | |
286 instance->do_clear (); | |
287 } | |
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288 |
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289 static void backtrace_error_message (void) |
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290 { |
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291 if (instance_ok ()) |
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292 instance->do_backtrace_error_message (); |
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293 } |
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294 |
5743 | 295 private: |
296 | |
297 // The current call stack. | |
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298 std::deque<call_stack_elt> cs; |
5743 | 299 |
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300 size_t curr_frame; |
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301 |
5743 | 302 static octave_call_stack *instance; |
303 | |
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304 static void cleanup_instance (void) { delete instance; instance = 0; } |
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305 |
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306 int do_current_line (void) const; |
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307 |
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308 int do_current_column (void) const; |
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309 |
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310 int do_caller_user_code_line (void) const; |
7877 | 311 |
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312 int do_caller_user_code_column (void) const; |
7877 | 313 |
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314 octave_function *do_caller (void) const |
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315 { |
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316 return curr_frame > 1 ? cs[curr_frame-1].fcn : cs[0].fcn; |
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317 } |
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318 |
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319 size_t do_current_frame (void) { return curr_frame; } |
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320 |
7890 | 321 size_t do_size (void) { return cs.size (); } |
322 | |
7901 | 323 size_t do_num_user_code_frames (octave_idx_type& curr_user_frame) const; |
324 | |
325 symbol_table::scope_id do_current_scope (void) const | |
326 { | |
327 return curr_frame > 0 && curr_frame < cs.size () | |
328 ? cs[curr_frame].scope : 0; | |
329 } | |
330 | |
331 symbol_table::context_id do_current_context (void) const | |
332 { | |
333 return curr_frame > 0 && curr_frame < cs.size () | |
334 ? cs[curr_frame].context : 0; | |
335 } | |
336 | |
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337 octave_function *do_element (size_t n) |
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338 { |
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339 octave_function *retval = 0; |
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340 |
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341 if (cs.size () > n) |
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342 { |
10313 | 343 call_stack_elt& elt = cs[n]; |
344 retval = elt.fcn; | |
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345 } |
5743 | 346 |
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347 return retval; |
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348 } |
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349 |
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350 octave_user_code *do_caller_user_code (size_t nskip) const; |
5744 | 351 |
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352 void do_push (octave_function *f, symbol_table::scope_id scope, |
10313 | 353 symbol_table::context_id context) |
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354 { |
7901 | 355 size_t prev_frame = curr_frame; |
356 curr_frame = cs.size (); | |
357 cs.push_back (call_stack_elt (f, scope, context, prev_frame)); | |
358 symbol_table::set_scope_and_context (scope, context); | |
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359 } |
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360 |
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361 octave_function *do_current (void) const |
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362 { |
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363 octave_function *retval = 0; |
5744 | 364 |
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365 if (! cs.empty ()) |
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366 { |
10313 | 367 const call_stack_elt& elt = cs[curr_frame]; |
368 retval = elt.fcn; | |
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369 } |
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370 |
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371 return retval; |
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372 } |
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373 |
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374 void do_set_location (int l, int c) |
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375 { |
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376 if (! cs.empty ()) |
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377 { |
10313 | 378 call_stack_elt& elt = cs.back (); |
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379 |
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380 elt.line = l; |
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381 elt.column = c; |
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382 } |
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383 } |
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384 |
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385 void do_set_line (int l) |
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386 { |
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387 if (! cs.empty ()) |
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388 { |
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389 call_stack_elt& elt = cs.back (); |
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390 |
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391 elt.line = l; |
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392 } |
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393 } |
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394 |
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395 void do_set_column (int c) |
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396 { |
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397 if (! cs.empty ()) |
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398 { |
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399 call_stack_elt& elt = cs.back (); |
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400 |
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401 elt.column = c; |
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402 } |
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403 } |
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404 |
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405 octave_map do_backtrace (size_t nskip, |
10313 | 406 octave_idx_type& curr_user_frame) const; |
5744 | 407 |
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408 bool do_goto_frame (size_t n, bool verbose); |
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409 |
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410 bool do_goto_frame_relative (int n, bool verbose); |
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411 |
7901 | 412 void do_goto_caller_frame (void); |
413 | |
414 void do_goto_base_frame (void); | |
415 | |
5743 | 416 void do_pop (void) |
417 { | |
7901 | 418 if (cs.size () > 1) |
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419 { |
10313 | 420 const call_stack_elt& elt = cs.back (); |
421 curr_frame = elt.prev; | |
422 cs.pop_back (); | |
423 const call_stack_elt& new_elt = cs[curr_frame]; | |
424 symbol_table::set_scope_and_context (new_elt.scope, new_elt.context); | |
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425 } |
5743 | 426 } |
427 | |
428 void do_clear (void) { cs.clear (); } | |
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429 |
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430 void do_backtrace_error_message (void) const; |
5743 | 431 }; |
432 | |
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433 // Call a function with exceptions handled to avoid problems with |
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434 // errors while shutting down. |
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435 |
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436 #define OCTAVE_IGNORE_EXCEPTION(E) \ |
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437 catch (E) \ |
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438 { \ |
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439 std::cerr << "error: ignoring " #E " while preparing to exit" << std::endl; \ |
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440 recover_from_exception (); \ |
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441 } |
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442 |
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443 #define OCTAVE_SAFE_CALL(F, ARGS) \ |
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444 do \ |
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445 { \ |
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446 try \ |
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447 { \ |
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448 unwind_protect frame; \ |
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449 \ |
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450 frame.protect_var (Vdebug_on_error); \ |
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451 frame.protect_var (Vdebug_on_warning); \ |
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452 \ |
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453 Vdebug_on_error = false; \ |
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454 Vdebug_on_warning = false; \ |
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455 \ |
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456 F ARGS; \ |
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457 } \ |
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458 OCTAVE_IGNORE_EXCEPTION (octave_interrupt_exception) \ |
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459 OCTAVE_IGNORE_EXCEPTION (octave_execution_exception) \ |
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460 OCTAVE_IGNORE_EXCEPTION (std::bad_alloc) \ |
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461 \ |
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462 if (error_state) \ |
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463 error_state = 0; \ |
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464 } \ |
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465 while (0) |
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466 |
1 | 467 #endif |