src/vm/statistics.c

   1 /* src/vm/statistics.c - global varables for statistics
   2
   3    Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    Contact: cacao@cacaojvm.org
  26
  27    Authors: Christian Thalinger
  28
  29    Changes:
  30
  31    $Id: statistics.c 5093 2006-07-10 13:36:47Z twisti $
  32
  33 */
  34
  35
  36 #include "config.h"
  37
  38 #include <string.h>
  39 #include <sys/time.h>
  40 #include <sys/resource.h>
  41
  42 #include "vm/types.h"
  43
  44 #include "toolbox/logging.h"
  45 #include "vm/global.h"
  46 #include "vm/options.h"
  47 #include "vm/statistics.h"
  48
  49
  50 /* global variables ***********************************************************/
  51
  52 static s8 loadingtime = 0;              /* accumulated loading time           */
  53 static s8 loadingstarttime = 0;
  54 static s8 loadingstoptime = 0;
  55 static s4 loadingtime_recursion = 0;
  56
  57 static s8 compilingtime = 0;            /* accumulated compile time           */
  58 static s8 compilingstarttime = 0;
  59 static s8 compilingstoptime = 0;
  60 static s4 compilingtime_recursion = 0;
  61
  62 s4 codememusage = 0;
  63 s4 maxcodememusage = 0;
  64
  65 s4 memoryusage = 0;
  66 s4 maxmemusage = 0;
  67
  68 s4 maxdumpsize = 0;
  69
  70 s4 globalallocateddumpsize = 0;
  71 s4 globaluseddumpsize = 0;
  72
  73
  74 /* variables for measurements *************************************************/
  75
  76 s4 size_classinfo  = 0;
  77 s4 size_fieldinfo  = 0;
  78 s4 size_methodinfo = 0;
  79 s4 size_codeinfo   = 0;
  80
  81 int count_const_pool_len = 0;
  82 int count_classref_len = 0;
  83 int count_parsed_desc_len = 0;
  84 int count_vftbl_len = 0;
  85 int count_all_methods = 0;
  86 int count_methods_marked_used = 0;  /* RTA */
  87
  88 int count_vmcode_len = 0;
  89 int count_extable_len = 0;
  90 int count_class_loads = 0;
  91 int count_class_inits = 0;
  92
  93 int count_utf_len = 0;                  /* size of utf hash                   */
  94 int count_utf_new = 0;                  /* calls of utf_new                   */
  95 int count_utf_new_found  = 0;           /* calls of utf_new with fast return  */
  96
  97 int count_locals_conflicts = 0;         /* register allocator statistics */
  98 int count_locals_spilled = 0;
  99 int count_locals_register = 0;
 100 int count_ss_spilled = 0;
 101 int count_ss_register = 0;
 102 int count_methods_allocated_by_lsra = 0;
 103 int count_mem_move_bb = 0;
 104 int count_interface_size = 0;
 105 int count_argument_mem_ss = 0;
 106 int count_argument_reg_ss = 0;
 107 int count_method_in_register = 0;
 108 int count_mov_reg_reg = 0;
 109 int count_mov_mem_reg = 0;
 110 int count_mov_reg_mem = 0;
 111 int count_mov_mem_mem = 0;
 112
 113 int count_jit_calls = 0;
 114 int count_methods = 0;
 115 int count_spills = 0;
 116 int count_spills_read = 0;
 117 int count_pcmd_activ = 0;
 118 int count_pcmd_drop = 0;
 119 int count_pcmd_zero = 0;
 120 int count_pcmd_const_store = 0;
 121 int count_pcmd_const_alu = 0;
 122 int count_pcmd_const_bra = 0;
 123 int count_pcmd_load = 0;
 124 int count_pcmd_move = 0;
 125 int count_load_instruction = 0;
 126 int count_pcmd_store = 0;
 127 int count_pcmd_store_comb = 0;
 128 int count_dup_instruction = 0;
 129 int count_pcmd_op = 0;
 130 int count_pcmd_mem = 0;
 131 int count_pcmd_met = 0;
 132 int count_pcmd_bra = 0;
 133 int count_pcmd_table = 0;
 134 int count_pcmd_return = 0;
 135 int count_pcmd_returnx = 0;
 136 int count_check_null = 0;
 137 int count_check_bound = 0;
 138 int count_max_basic_blocks = 0;
 139 int count_basic_blocks = 0;
 140 int count_javainstr = 0;
 141 int count_max_javainstr = 0;
 142 int count_javacodesize = 0;
 143 int count_javaexcsize = 0;
 144 int count_calls = 0;
 145 int count_tryblocks = 0;
 146 int count_code_len = 0;
 147 int count_data_len = 0;
 148 int count_cstub_len = 0;
 149 int count_nstub_len = 0;
 150 int count_max_new_stack = 0;
 151 int count_upper_bound_new_stack = 0;
 152
 153 u8 count_native_function_calls=0;
 154 u8 count_jni_callXmethod_calls=0;
 155 u8 count_jni_calls=0;
 156
 157
 158 static int count_block_stack_init[11] = {
 159         0, 0, 0, 0, 0,
 160         0, 0, 0, 0, 0,
 161         0
 162 };
 163 int *count_block_stack = count_block_stack_init;
 164 static int count_analyse_iterations_init[5] = {
 165         0, 0, 0, 0, 0
 166 };
 167 int *count_analyse_iterations = count_analyse_iterations_init;
 168 static int count_method_bb_distribution_init[9] = {
 169         0, 0, 0, 0, 0,
 170         0, 0, 0, 0
 171 };
 172 int *count_method_bb_distribution = count_method_bb_distribution_init;
 173 static int count_block_size_distribution_init[18] = {
 174         0, 0, 0, 0, 0,
 175         0, 0, 0, 0, 0,
 176         0, 0, 0, 0, 0,
 177         0, 0, 0
 178 };
 179 int *count_block_size_distribution = count_block_size_distribution_init;
 180 static int count_store_length_init[21] = {
 181         0, 0, 0, 0, 0,
 182         0, 0, 0, 0, 0,
 183         0, 0, 0, 0, 0,
 184         0, 0, 0, 0, 0,
 185         0
 186 };
 187 int *count_store_length = count_store_length_init;
 188 static int count_store_depth_init[11] = {
 189         0, 0, 0, 0, 0,
 190         0, 0, 0, 0, 0,
 191         0
 192 };
 193 int *count_store_depth = count_store_depth_init;
 194
 195
 196 /* instruction scheduler statistics *******************************************/
 197
 198 s4 count_schedule_basic_blocks = 0;
 199 s4 count_schedule_nodes = 0;
 200 s4 count_schedule_leaders = 0;
 201 s4 count_schedule_max_leaders = 0;
 202 s4 count_schedule_critical_path = 0;
 203
 204
 205 /* nativeinvokation ***********************************************************
 206
 207    increments the native invokation count by one
 208
 209 *******************************************************************************/
 210
 211 void nativeinvokation(void)
 212 {
 213         /* XXX do locking here */
 214         count_native_function_calls++;
 215 }
 216
 217
 218 /* jnicallXmethodinvokation ***************************************************
 219
 220    increments the jni CallXMethod invokation count by one
 221
 222 *******************************************************************************/
 223
 224 void jnicallXmethodnvokation(void)
 225 {
 226         /* XXX do locking here */
 227         count_jni_callXmethod_calls++;
 228 }
 229
 230
 231 /* jniinvokation *************************************************************
 232
 233    increments the jni overall  invokation count by one
 234
 235 *******************************************************************************/
 236
 237 void jniinvokation(void)
 238 {
 239         /* XXX do locking here */
 240         count_jni_calls++;
 241 }
 242
 243
 244 /* getcputime *********************************** ******************************
 245
 246    Returns the used CPU time in microseconds
 247
 248 *******************************************************************************/
 249
 250 s8 getcputime(void)
 251 {
 252         struct rusage ru;
 253         int sec, usec;
 254
 255         getrusage(RUSAGE_SELF, &ru);
 256         sec = ru.ru_utime.tv_sec + ru.ru_stime.tv_sec;
 257         usec = ru.ru_utime.tv_usec + ru.ru_stime.tv_usec;
 258
 259         return sec * 1000000 + usec;
 260 }
 261
 262
 263 /* loadingtime_stop ************************************************************
 264
 265    XXX
 266
 267 *******************************************************************************/
 268
 269 void loadingtime_start(void)
 270 {
 271         loadingtime_recursion++;
 272
 273         if (loadingtime_recursion == 1)
 274                 loadingstarttime = getcputime();
 275 }
 276
 277
 278 /* loadingtime_stop ************************************************************
 279
 280    XXX
 281
 282 *******************************************************************************/
 283
 284 void loadingtime_stop(void)
 285 {
 286         if (loadingtime_recursion == 1) {
 287                 loadingstoptime = getcputime();
 288                 loadingtime += (loadingstoptime - loadingstarttime);
 289         }
 290
 291         loadingtime_recursion--;
 292 }
 293
 294
 295 /* compilingtime_stop **********************************************************
 296
 297    XXX
 298
 299 *******************************************************************************/
 300
 301 void compilingtime_start(void)
 302 {
 303         compilingtime_recursion++;
 304
 305         if (compilingtime_recursion == 1)
 306                 compilingstarttime = getcputime();
 307 }
 308
 309
 310 /* compilingtime_stop **********************************************************
 311
 312    XXX
 313
 314 *******************************************************************************/
 315
 316 void compilingtime_stop(void)
 317 {
 318         if (compilingtime_recursion == 1) {
 319                 compilingstoptime = getcputime();
 320                 compilingtime += (compilingstoptime - compilingstarttime);
 321         }
 322
 323         compilingtime_recursion--;
 324 }
 325
 326
 327 /* print_times *****************************************************************
 328
 329    Prints a summary of CPU time usage.
 330
 331 *******************************************************************************/
 332
 333 void print_times(void)
 334 {
 335         s8 totaltime;
 336         s8 runtime;
 337
 338         totaltime = getcputime();
 339         runtime = totaltime - loadingtime - compilingtime;
 340
 341 #if SIZEOF_VOID_P == 8
 342         dolog("Time for loading classes: %6ld ms", loadingtime / 1000);
 343         dolog("Time for compiling code:  %6ld ms", compilingtime / 1000);
 344         dolog("Time for running program: %6ld ms", runtime / 1000);
 345         dolog("Total time:               %6ld ms", totaltime / 1000);
 346 #else
 347         dolog("Time for loading classes: %6lld ms", loadingtime / 1000);
 348         dolog("Time for compiling code:  %6lld ms", compilingtime / 1000);
 349         dolog("Time for running program: %6lld ms", runtime / 1000);
 350         dolog("Total time:               %6lld ms", totaltime / 1000);
 351 #endif
 352 }
 353
 354
 355 /* print_stats *****************************************************************
 356
 357    outputs detailed compiler statistics
 358
 359 *******************************************************************************/
 360
 361 void print_stats(void)
 362 {
 363         s4    i;
 364         float f;
 365         s4    sum;
 366
 367
 368         dolog("Number of JIT compiler calls: %6d", count_jit_calls);
 369         dolog("Number of compiled methods:   %6d", count_methods);
 370
 371         dolog("Number of compiled basic blocks:               %6d",
 372                   count_basic_blocks);
 373         dolog("Number of max. basic blocks per method:        %6d",
 374                   count_max_basic_blocks);
 375
 376         dolog("Number of compiled JavaVM instructions:        %6d",
 377                   count_javainstr);
 378         dolog("Number of max. JavaVM instructions per method: %6d",
 379                   count_max_javainstr);
 380         dolog("Size of compiled JavaVM instructions:          %6d(%d)",
 381                   count_javacodesize, count_javacodesize - count_methods * 18);
 382
 383         dolog("Size of compiled Exception Tables:      %d", count_javaexcsize);
 384         dolog("Number of Machine-Instructions: %d", count_code_len >> 2);
 385         dolog("Number of Spills (write to memory): %d", count_spills);
 386         dolog("Number of Spills (read from memory): %d", count_spills_read);
 387         dolog("Number of Activ    Pseudocommands: %6d", count_pcmd_activ);
 388         dolog("Number of Drop     Pseudocommands: %6d", count_pcmd_drop);
 389         dolog("Number of Const    Pseudocommands: %6d (zero:%5d)",
 390                   count_pcmd_load, count_pcmd_zero);
 391         dolog("Number of ConstAlu Pseudocommands: %6d (cmp: %5d, store:%5d)",
 392                   count_pcmd_const_alu, count_pcmd_const_bra, count_pcmd_const_store);
 393         dolog("Number of Move     Pseudocommands: %6d", count_pcmd_move);
 394         dolog("Number of Load     Pseudocommands: %6d", count_load_instruction);
 395         dolog("Number of Store    Pseudocommands: %6d (combined: %5d)",
 396                   count_pcmd_store, count_pcmd_store - count_pcmd_store_comb);
 397         dolog("Number of OP       Pseudocommands: %6d", count_pcmd_op);
 398         dolog("Number of DUP      Pseudocommands: %6d", count_dup_instruction);
 399         dolog("Number of Mem      Pseudocommands: %6d", count_pcmd_mem);
 400         dolog("Number of Method   Pseudocommands: %6d", count_pcmd_met);
 401         dolog("Number of Branch   Pseudocommands: %6d (rets:%5d, Xrets: %5d)",
 402                   count_pcmd_bra, count_pcmd_return, count_pcmd_returnx);
 403         dolog("Number of Table    Pseudocommands: %6d", count_pcmd_table);
 404         dolog("Number of Useful   Pseudocommands: %6d", count_pcmd_table +
 405                   count_pcmd_bra + count_pcmd_load + count_pcmd_mem + count_pcmd_op);
 406         dolog("Number of Null Pointer Checks:     %6d", count_check_null);
 407         dolog("Number of Array Bound Checks:      %6d", count_check_bound);
 408         dolog("Number of Try-Blocks: %d", count_tryblocks);
 409         dolog("Maximal count of stack elements:   %d", count_max_new_stack);
 410         dolog("Upper bound of max stack elements: %d", count_upper_bound_new_stack);
 411         dolog("Distribution of stack sizes at block boundary");
 412         dolog("     0     1     2     3     4     5     6     7     8     9  >=10");
 413         dolog("%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d",
 414                   count_block_stack[0], count_block_stack[1], count_block_stack[2],
 415                   count_block_stack[3], count_block_stack[4], count_block_stack[5],
 416                   count_block_stack[6], count_block_stack[7], count_block_stack[8],
 417                   count_block_stack[9], count_block_stack[10]);
 418         dolog("Distribution of store stack depth");
 419         dolog("     0     1     2     3     4     5     6     7     8     9  >=10");
 420         dolog("%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d",
 421                   count_store_depth[0], count_store_depth[1], count_store_depth[2],
 422                   count_store_depth[3], count_store_depth[4], count_store_depth[5],
 423                   count_store_depth[6], count_store_depth[7], count_store_depth[8],
 424                   count_store_depth[9], count_store_depth[10]);
 425         dolog("Distribution of store creator chains first part");
 426         dolog("     0     1     2     3     4     5     6     7     8     9");
 427         dolog("%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d",
 428                   count_store_length[0], count_store_length[1], count_store_length[2],
 429                   count_store_length[3], count_store_length[4], count_store_length[5],
 430                   count_store_length[6], count_store_length[7], count_store_length[8],
 431                   count_store_length[9]);
 432         dolog("Distribution of store creator chains second part");
 433         dolog("    10    11    12    13    14    15    16    17    18    19  >=20");
 434         dolog("%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d%6d",
 435                   count_store_length[10], count_store_length[11],
 436                   count_store_length[12], count_store_length[13],
 437                   count_store_length[14], count_store_length[15],
 438                   count_store_length[16], count_store_length[17],
 439                   count_store_length[18], count_store_length[19],
 440                   count_store_length[20]);
 441         dolog("Distribution of analysis iterations");
 442         dolog("     1     2     3     4   >=5");
 443         dolog("%6d%6d%6d%6d%6d",
 444                   count_analyse_iterations[0], count_analyse_iterations[1],
 445                   count_analyse_iterations[2], count_analyse_iterations[3],
 446                   count_analyse_iterations[4]);
 447
 448
 449         /* Distribution of basic blocks per method ********************************/
 450
 451         log_println("Distribution of basic blocks per method:");
 452         log_println("   <=5  <=10  <=15  <=20  <=30  <=40  <=50  <=75   >75");
 453
 454         log_start();
 455         for (i = 0; i <= 8; i++)
 456                 log_print("%6d", count_method_bb_distribution[i]);
 457         log_finish();
 458
 459         /* print ratio */
 460
 461         f = (float) count_methods;
 462
 463         log_start();
 464         for (i = 0; i <= 8; i++)
 465                 log_print("%6.2f", (float) count_method_bb_distribution[i] / f);
 466         log_finish();
 467
 468         /* print cumulated ratio */
 469
 470         log_start();
 471         for (i = 0, sum = 0; i <= 8; i++) {
 472                 sum += count_method_bb_distribution[i];
 473                 log_print("%6.2f", (float) sum / f);
 474         }
 475         log_finish();
 476
 477
 478         /* Distribution of basic block sizes **************************************/
 479
 480         log_println("Distribution of basic block sizes:");
 481         log_println("     0     1     2     3     4     5     6     7     8     9   <13   <15   <17   <19   <21   <26   <31   >30");
 482
 483         /* print block sizes */
 484
 485         log_start();
 486         for (i = 0; i <= 17; i++)
 487                 log_print("%6d", count_block_size_distribution[i]);
 488         log_finish();
 489
 490         /* print ratio */
 491
 492         f = (float) count_basic_blocks;
 493
 494         log_start();
 495         for (i = 0; i <= 17; i++)
 496                 log_print("%6.2f", (float) count_block_size_distribution[i] / f);
 497         log_finish();
 498
 499         /* print cumulated ratio */
 500
 501         log_start();
 502         for (i = 0, sum = 0; i <= 17; i++) {
 503                 sum += count_block_size_distribution[i];
 504                 log_print("%6.2f", (float) sum / f);
 505         }
 506         log_finish();
 507
 508         log_println("Size of Code Area:          %10.3f kB", (float) count_code_len / 1024);
 509         log_println("Size of Data Area:          %10.3f kB", (float) count_data_len / 1024);
 510
 511         log_println("Size of classinfo  (%3d B): %10.3f kB", sizeof(classinfo), (float) size_classinfo / 1024);
 512         log_println("Size of fieldinfo  (%3d B): %10.3f kB", sizeof(fieldinfo), (float) size_fieldinfo / 1024);
 513         log_println("Size of methodinfo (%3d B): %10.3f kB", sizeof(methodinfo), (float) size_methodinfo / 1024);
 514         log_println("Size of codeinfo   (%3d B): %10.3f kB", sizeof(codeinfo), (float) size_codeinfo / 1024);
 515
 516         log_println("Size of Const Pool:         %10.3f kB", (float) (count_const_pool_len + count_utf_len) / 1024);
 517         log_println("Size of Class refs:         %10.3f kB", (float) count_classref_len / 1024);
 518         log_println("Size of descriptors:        %10.3f kB", (float) count_parsed_desc_len / 1024);
 519         log_println("Size of vftbl:              %10.3f kB", (float) count_vftbl_len / 1024);
 520         log_println("Size of compiler stubs:     %10.3f kB", (float) count_cstub_len / 1024);
 521         log_println("Size of native stubs:       %10.3f kB", (float) count_nstub_len / 1024);
 522         log_println("Size of utf:                %10.3f kB", (float) count_utf_len / 1024);
 523         log_println("Size of VMCode:             %10.3f kB", (float) count_vmcode_len / 1024);
 524         log_println("Size of exception tables:   %10.3f kB\n", (float) count_extable_len / 1024);
 525
 526         dolog("Number of class loads:    %6d", count_class_loads);
 527         dolog("Number of class inits:    %6d", count_class_inits);
 528         dolog("Number of loaded Methods: %6d\n", count_all_methods);
 529
 530         dolog("Calls of utf_new:                 %6d", count_utf_new);
 531         dolog("Calls of utf_new (element found): %6d\n", count_utf_new_found);
 532
 533
 534         /* LSRA statistics ********************************************************/
 535
 536         dolog("Moves reg -> reg:     %6d", count_mov_reg_reg);
 537         dolog("Moves mem -> reg:     %6d", count_mov_mem_reg);
 538         dolog("Moves reg -> mem:     %6d", count_mov_reg_mem);
 539         dolog("Moves mem -> mem:     %6d", count_mov_mem_mem);
 540
 541         dolog("Methods allocated by LSRA:         %6d",
 542                   count_methods_allocated_by_lsra);
 543         dolog("Conflicts between local Variables: %6d", count_locals_conflicts);
 544         dolog("Local Variables held in Memory:    %6d", count_locals_spilled);
 545         dolog("Local Variables held in Registers: %6d", count_locals_register);
 546         dolog("Stackslots held in Memory:         %6d", count_ss_spilled);
 547         dolog("Stackslots held in Registers:      %6d", count_ss_register);
 548         dolog("Memory moves at BB Boundaries:     %6d", count_mem_move_bb);
 549         dolog("Number of interface slots:         %6d\n", count_interface_size);
 550         dolog("Number of Argument stack slots in register:  %6d",
 551                   count_argument_reg_ss);
 552         dolog("Number of Argument stack slots in memory:    %6d\n",
 553                   count_argument_mem_ss);
 554         dolog("Number of Methods kept in registers:         %6d\n",
 555                   count_method_in_register);
 556
 557
 558         /* instruction scheduler statistics ***************************************/
 559
 560 #if defined(USE_SCHEDULER)
 561         dolog("Instruction scheduler statistics:");
 562         dolog("Number of basic blocks:       %7d", count_schedule_basic_blocks);
 563         dolog("Number of nodes:              %7d", count_schedule_nodes);
 564         dolog("Number of leaders nodes:      %7d", count_schedule_leaders);
 565         dolog("Number of max. leaders nodes: %7d", count_schedule_max_leaders);
 566         dolog("Length of critical path:      %7d\n", count_schedule_critical_path);
 567 #endif
 568
 569
 570         /* call statistics ********************************************************/
 571
 572         dolog("Function call statistics:");
 573         dolog("Number of native function invokations:           %ld",
 574                   count_native_function_calls);
 575         dolog("Number of jni->CallXMethod function invokations: %ld",
 576                   count_jni_callXmethod_calls);
 577         dolog("Overall number of jni invokations:               %ld",
 578                   count_jni_calls);
 579
 580
 581         /* now print other statistics ********************************************/
 582
 583 #if defined(ENABLE_INTRP)
 584         print_dynamic_super_statistics();
 585 #endif
 586 }
 587
 588
 589 /* mem_usagelog ****************************************************************
 590
 591    prints some memory related infos
 592
 593 *******************************************************************************/
 594
 595 void mem_usagelog(bool givewarnings)
 596 {
 597         if ((memoryusage != 0) && givewarnings) {
 598                 dolog("Allocated memory not returned: %9d", (s4) memoryusage);
 599         }
 600
 601         if ((globalallocateddumpsize != 0) && givewarnings) {
 602                 dolog("Dump memory not returned:      %9d",
 603                           (s4) globalallocateddumpsize);
 604         }
 605
 606         dolog("Code - max. memory usage:      %9d kB",
 607                   (s4) ((maxcodememusage + 1023) / 1024));
 608         dolog("Random - max. memory usage:    %9d kB",
 609                   (s4) ((maxmemusage + 1023) / 1024));
 610         dolog("Dump - max. memory usage:      %9d kB",
 611                   (s4) ((maxdumpsize + 1023) / 1024));
 612 }
 613
 614
 615 /*
 616  * These are local overrides for various environment variables in Emacs.
 617  * Please do not remove this and leave it at the end of the file, where
 618  * Emacs will automagically detect them.
 619  * ---------------------------------------------------------------------
 620  * Local variables:
 621  * mode: c
 622  * indent-tabs-mode: t
 623  * c-basic-offset: 4
 624  * tab-width: 4
 625  * End:
 626  */