1 /* -----------------------------------------------------------------------------
2 * $Id: RtsFlags.c,v 1.48 2001/08/13 12:34:37 simonmar Exp $
4 * (c) The AQUA Project, Glasgow University, 1994-1997
5 * (c) The GHC Team, 1998-1999
7 * Functions for parsing the argument list.
9 * ---------------------------------------------------------------------------*/
14 //* Static function decls::
15 //* Command-line option parsing routines::
16 //* GranSim specific options::
21 //@node Includes, Constants
22 //@subsection Includes
27 #include "BlockAlloc.h"
28 #include "Itimer.h" /* CS_MIN_MILLISECS */
29 #include "Profiling.h"
31 #if defined(PROFILING)
39 extern struct RTS_FLAGS RtsFlags;
42 * Split argument lists
44 int prog_argc; /* an "int" so as to match normal "argc" */
45 char **prog_argv = NULL;
46 int rts_argc; /* ditto */
47 char *rts_argv[MAX_RTS_ARGS];
49 //@node Constants, Static function decls, Includes
50 //@subsection Constants
53 * constants, used later
58 char *debug_opts_strs[] = {
59 "DEBUG (-D1): scheduler\n",
60 "DEBUG (-D2): evaluator\n",
61 "DEBUG (-D4): codegen\n",
62 "DEBUG (-D8): weak\n",
63 "DEBUG (-D16): gccafs\n",
65 "DEBUG (-D64): block\n",
66 "DEBUG (-D128): sanity\n",
67 "DEBUG (-D256): stable\n",
68 "DEBUG (-D512): prof\n",
69 "DEBUG (-D1024): gran\n",
70 "DEBUG (-D2048): par\n",
71 "DEBUG (-D4096): linker\n"
74 char *debug_opts_prefix[] = {
92 char *gran_debug_opts_strs[] = {
93 "DEBUG (-bDe, -bD1): event_trace; printing event trace.\n",
94 "DEBUG (-bDE, -bD2): event_stats; printing event statistics.\n",
95 "DEBUG (-bDb, -bD4): bq; check blocking queues\n",
96 "DEBUG (-bDG, -bD8): pack; routines for (un-)packing graph structures.\n",
97 "DEBUG (-bDq, -bD16): checkSparkQ; check consistency of the spark queues.\n",
98 "DEBUG (-bDf, -bD32): thunkStealing; print forwarding of fetches.\n",
99 "DEBUG (-bDr, -bD64): randomSteal; stealing sparks/threads from random PEs.\n",
100 "DEBUG (-bDF, -bD128): findWork; searching spark-pools (local & remote), thread queues for work.\n",
101 "DEBUG (-bDu, -bD256): unused; currently unused flag.\n",
102 "DEBUG (-bDS, -bD512): pri; priority sparking or scheduling.\n",
103 "DEBUG (-bD:, -bD1024): checkLight; check GranSim-Light setup.\n",
104 "DEBUG (-bDo, -bD2048): sortedQ; check whether spark/thread queues are sorted.\n",
105 "DEBUG (-bDz, -bD4096): blockOnFetch; check for blocked on fetch.\n",
106 "DEBUG (-bDP, -bD8192): packBuffer; routines handling pack buffer (GranSim internal!).\n",
107 "DEBUG (-bDt, -bD16384): blockOnFetch_sanity; check for TSO asleep on fetch.\n",
110 /* one character codes for the available debug options */
111 char gran_debug_opts_flags[] = {
112 'e', 'E', 'b', 'G', 'q', 'f', 'r', 'F', 'u', 'S', ':', 'o', 'z', 'P', 't'
115 /* prefix strings printed with the debug messages of the corresponding type */
116 char *gran_debug_opts_prefix[] = {
117 "", /* event_trace */
118 "", /* event_stats */
121 "^^", /* checkSparkQ */
122 "==", /* thunkStealing */
123 "^^", /* randomSteal */
127 "::", /* checkLight */
129 "", /* blockOnFetch */
131 "" /* blockOnFetch_sanity */
136 char *par_debug_opts_strs[] = {
137 "DEBUG (-qDv, -qD1): verbose; be generally verbose with parallel related stuff.\n",
138 "DEBUG (-qDq, -qD2): bq; print blocking queues.\n",
139 "DEBUG (-qDs, -qD4): schedule; scheduling of parallel threads.\n",
140 "DEBUG (-qDe, -qD8): free; free messages.\n",
141 "DEBUG (-qDr, -qD16): resume; resume messages.\n",
142 "DEBUG (-qDw, -qD32): weight; print weights and distrib GC stuff.\n",
143 "DEBUG (-qDF, -qD64): fetch; fetch messages.\n",
144 // "DEBUG (-qDa, -qD128): ack; ack messages.\n",
145 "DEBUG (-qDf, -qD128): fish; fish messages.\n",
146 //"DEBUG (-qDo, -qD512): forward; forwarding messages to other PEs.\n",
147 "DEBUG (-qDl, -qD256): tables; print internal LAGA etc tables.\n",
148 "DEBUG (-qDo, -qD512): packet; packets and graph structures when packing.\n",
149 "DEBUG (-qDp, -qD1024): pack; packing and unpacking graphs.\n",
150 "DEBUG (-qDz, -qD2048): paranoia; ridiculously detailed output (excellent for filling a partition).\n"
153 /* one character codes for the available debug options */
154 char par_debug_opts_flags[] = {
155 'v', 'q', 's', 'e', 'r', 'w', 'F', 'f', 'l', 'o', 'p', 'z'
158 /* prefix strings printed with the debug messages of the corresponding type */
159 char *par_debug_opts_prefix[] = {
177 //@node Static function decls, Command-line option parsing routines, Constants
178 //@subsection Static function decls
180 /* -----------------------------------------------------------------------------
181 Static function decls
182 -------------------------------------------------------------------------- */
184 static FILE * /* return NULL on error */
187 int argc, char *argv[],
188 int rts_argc, char *rts_argv[],
189 const char *FILENAME_FMT);
191 static I_ decode(const char *s);
192 static void bad_option(const char *s);
195 static void enable_GranSimLight(void);
196 static void process_gran_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
197 static void set_GranSim_debug_options(nat n);
198 static void help_GranSim_debug_options(nat n);
200 static void process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
201 static void set_par_debug_options(nat n);
202 static void help_par_debug_options(nat n);
205 static void set_debug_options(nat n);
206 static void help_debug_options(nat n);
209 //@node Command-line option parsing routines, GranSim specific options, Static function decls
210 //@subsection Command-line option parsing routines
212 /* -----------------------------------------------------------------------------
213 * Command-line option parsing routines.
214 * ---------------------------------------------------------------------------*/
216 void initRtsFlagsDefaults(void)
218 RtsFlags.GcFlags.statsFile = NULL;
219 RtsFlags.GcFlags.giveStats = NO_GC_STATS;
221 RtsFlags.GcFlags.maxStkSize = (1024 * 1024) / sizeof(W_);
222 RtsFlags.GcFlags.initialStkSize = 1024 / sizeof(W_);
224 RtsFlags.GcFlags.minAllocAreaSize = (256 * 1024) / BLOCK_SIZE;
225 RtsFlags.GcFlags.minOldGenSize = (1024 * 1024) / BLOCK_SIZE;
226 RtsFlags.GcFlags.maxHeapSize = 0; /* off by default */
227 RtsFlags.GcFlags.heapSizeSuggestion = 0; /* none */
228 RtsFlags.GcFlags.pcFreeHeap = 3; /* 3% */
229 RtsFlags.GcFlags.oldGenFactor = 2;
231 /* A hack currently needed for GUM -- HWL */
232 RtsFlags.GcFlags.generations = 1;
233 RtsFlags.GcFlags.steps = 2;
234 RtsFlags.GcFlags.squeezeUpdFrames = rtsFalse;
236 RtsFlags.GcFlags.generations = 2;
237 RtsFlags.GcFlags.steps = 2;
238 RtsFlags.GcFlags.squeezeUpdFrames = rtsTrue;
240 RtsFlags.GcFlags.compact = rtsFalse;
241 RtsFlags.GcFlags.compactThreshold = 30.0;
242 #ifdef RTS_GTK_FRONTPANEL
243 RtsFlags.GcFlags.frontpanel = rtsFalse;
246 #if defined(PROFILING) || defined(PAR)
247 RtsFlags.CcFlags.doCostCentres = 0;
248 #endif /* PROFILING or PAR */
251 RtsFlags.ProfFlags.doHeapProfile = rtsFalse;
252 RtsFlags.ProfFlags.profileFrequency = 20;
253 RtsFlags.ProfFlags.showCCSOnException = rtsFalse;
254 RtsFlags.ProfFlags.modSelector = NULL;
255 RtsFlags.ProfFlags.descrSelector = NULL;
256 RtsFlags.ProfFlags.typeSelector = NULL;
257 RtsFlags.ProfFlags.ccSelector = NULL;
259 RtsFlags.ProfFlags.doHeapProfile = rtsFalse;
262 RtsFlags.ConcFlags.ctxtSwitchTime = CS_MIN_MILLISECS; /* In milliseconds */
265 RtsFlags.ParFlags.nNodes = 1;
269 RtsFlags.ParFlags.ParStats.Full = rtsFalse;
270 RtsFlags.ParFlags.ParStats.Suppressed = rtsFalse;
271 RtsFlags.ParFlags.ParStats.Binary = rtsFalse;
272 RtsFlags.ParFlags.ParStats.Sparks = rtsFalse;
273 RtsFlags.ParFlags.ParStats.Heap = rtsFalse;
274 RtsFlags.ParFlags.ParStats.NewLogfile = rtsFalse;
275 RtsFlags.ParFlags.ParStats.Global = rtsFalse;
277 RtsFlags.ParFlags.outputDisabled = rtsFalse;
279 RtsFlags.ParFlags.doFairScheduling = rtsTrue; /* fair sched by def */
281 RtsFlags.ParFlags.doFairScheduling = rtsFalse; /* unfair sched by def */
283 RtsFlags.ParFlags.packBufferSize = 1024;
284 RtsFlags.ParFlags.thunksToPack = 1; /* 0 ... infinity; */
285 RtsFlags.ParFlags.globalising = 1; /* 0 ... everything */
286 RtsFlags.ParFlags.maxThreads = 1024;
287 RtsFlags.ParFlags.maxFishes = MAX_FISHES;
288 RtsFlags.ParFlags.fishDelay = FISH_DELAY;
291 #if defined(PAR) || defined(SMP)
292 RtsFlags.ParFlags.maxLocalSparks = 4096;
293 #endif /* PAR || SMP */
296 /* ToDo: check defaults for GranSim and GUM */
297 RtsFlags.GcFlags.maxStkSize = (1024 * 1024) / sizeof(W_);
298 RtsFlags.GcFlags.initialStkSize = 1024 / sizeof(W_);
300 RtsFlags.GranFlags.maxThreads = 65536; // refers to mandatory threads
301 RtsFlags.GranFlags.GranSimStats.Full = rtsFalse;
302 RtsFlags.GranFlags.GranSimStats.Suppressed = rtsFalse;
303 RtsFlags.GranFlags.GranSimStats.Binary = rtsFalse;
304 RtsFlags.GranFlags.GranSimStats.Sparks = rtsFalse;
305 RtsFlags.GranFlags.GranSimStats.Heap = rtsFalse;
306 RtsFlags.GranFlags.GranSimStats.NewLogfile = rtsFalse;
307 RtsFlags.GranFlags.GranSimStats.Global = rtsFalse;
309 RtsFlags.GranFlags.packBufferSize = 1024;
310 RtsFlags.GranFlags.packBufferSize_internal = GRANSIM_DEFAULT_PACK_BUFFER_SIZE;
312 RtsFlags.GranFlags.proc = MAX_PROC;
313 RtsFlags.GranFlags.Fishing = rtsFalse;
314 RtsFlags.GranFlags.maxFishes = MAX_FISHES;
315 RtsFlags.GranFlags.time_slice = GRAN_TIME_SLICE;
316 RtsFlags.GranFlags.Light = rtsFalse;
318 RtsFlags.GranFlags.Costs.latency = LATENCY;
319 RtsFlags.GranFlags.Costs.additional_latency = ADDITIONAL_LATENCY;
320 RtsFlags.GranFlags.Costs.fetchtime = FETCHTIME;
321 RtsFlags.GranFlags.Costs.lunblocktime = LOCALUNBLOCKTIME;
322 RtsFlags.GranFlags.Costs.gunblocktime = GLOBALUNBLOCKTIME;
323 RtsFlags.GranFlags.Costs.mpacktime = MSGPACKTIME;
324 RtsFlags.GranFlags.Costs.munpacktime = MSGUNPACKTIME;
325 RtsFlags.GranFlags.Costs.mtidytime = MSGTIDYTIME;
327 RtsFlags.GranFlags.Costs.threadcreatetime = THREADCREATETIME;
328 RtsFlags.GranFlags.Costs.threadqueuetime = THREADQUEUETIME;
329 RtsFlags.GranFlags.Costs.threaddescheduletime = THREADDESCHEDULETIME;
330 RtsFlags.GranFlags.Costs.threadscheduletime = THREADSCHEDULETIME;
331 RtsFlags.GranFlags.Costs.threadcontextswitchtime = THREADCONTEXTSWITCHTIME;
333 RtsFlags.GranFlags.Costs.arith_cost = ARITH_COST;
334 RtsFlags.GranFlags.Costs.branch_cost = BRANCH_COST;
335 RtsFlags.GranFlags.Costs.load_cost = LOAD_COST;
336 RtsFlags.GranFlags.Costs.store_cost = STORE_COST;
337 RtsFlags.GranFlags.Costs.float_cost = FLOAT_COST;
339 RtsFlags.GranFlags.Costs.heapalloc_cost = HEAPALLOC_COST;
341 RtsFlags.GranFlags.Costs.pri_spark_overhead = PRI_SPARK_OVERHEAD;
342 RtsFlags.GranFlags.Costs.pri_sched_overhead = PRI_SCHED_OVERHEAD;
344 RtsFlags.GranFlags.DoFairSchedule = rtsFalse;
345 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
346 RtsFlags.GranFlags.DoStealThreadsFirst = rtsFalse;
347 RtsFlags.GranFlags.DoAlwaysCreateThreads = rtsFalse;
348 RtsFlags.GranFlags.DoBulkFetching = rtsFalse;
349 RtsFlags.GranFlags.DoThreadMigration = rtsFalse;
350 RtsFlags.GranFlags.FetchStrategy = 2;
351 RtsFlags.GranFlags.PreferSparksOfLocalNodes = rtsFalse;
352 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
353 RtsFlags.GranFlags.DoPriorityScheduling = rtsFalse;
354 RtsFlags.GranFlags.SparkPriority = 0;
355 RtsFlags.GranFlags.SparkPriority2 = 0;
356 RtsFlags.GranFlags.RandomPriorities = rtsFalse;
357 RtsFlags.GranFlags.InversePriorities = rtsFalse;
358 RtsFlags.GranFlags.IgnorePriorities = rtsFalse;
359 RtsFlags.GranFlags.ThunksToPack = 0;
360 RtsFlags.GranFlags.RandomSteal = rtsTrue;
364 RtsFlags.TickyFlags.showTickyStats = rtsFalse;
365 RtsFlags.TickyFlags.tickyFile = NULL;
372 "Usage: <prog> <args> [+RTS <rtsopts> | -RTS <args>] ... --RTS <args>",
374 " +RTS Indicates run time system options follow",
375 " -RTS Indicates program arguments follow",
376 " --RTS Indicates that ALL subsequent arguments will be given to the",
377 " program (including any of these RTS flags)",
379 "The following run time system options are available:",
381 " -? Prints this message and exits; the program is not executed",
383 " -K<size> Sets the maximum stack size (default 1M) Egs: -K32k -K512k",
384 " -k<size> Sets the initial thread stack size (default 1k) Egs: -K4k -K2m",
386 " -A<size> Sets the minimum allocation area size (default 256k) Egs: -A1m -A10k",
387 " -M<size> Sets the maximum heap size (default unlimited) Egs: -M256k -M1G",
388 " -H<size> Sets the minimum heap size (default 0M) Egs: -H24m -H1G",
389 " -m<n> Minimum % of heap which must be available (default 3%)",
390 " -G<n> Number of generations (default: 2)",
391 " -T<n> Number of steps in younger generations (default: 2)",
392 " -c<n> Auto-enable compaction of the oldest generation when live data is",
393 " at least <n>% of the maximum heap size set with -M (default: 30%)",
394 " -c Enable compaction for all major collections",
396 " -t<file> One-line GC statistics (default file: <program>.stat)",
397 " -s<file> Summary GC statistics (with -Sstderr going to stderr)",
398 " -S<file> Detailed GC statistics",
399 #ifdef RTS_GTK_FRONTPANEL
400 " -f Display front panel (requires X11 & GTK+)",
404 " -Z Don't squeeze out update frames on stack overflow",
405 " -B Sound the bell at the start of each garbage collection",
406 #if defined(PROFILING) || defined(PAR)
408 " -px Time/allocation profile (XML) (output file <program>.prof)",
409 " -p Time/allocation profile (output file <program>.prof)",
410 " -P More detailed Time/Allocation profile",
411 " -Pa Give information about *all* cost centres",
413 # if defined(PROFILING)
415 " -hx Heap residency profile (XML) (output file <program>.prof)",
416 " -h<break-down> Heap residency profile (text) (output file <program>.prof)",
417 " break-down: C = cost centre stack (default), M = module",
418 " D = closure description, Y = type description",
419 " A subset of closures may be selected thusly:",
420 " -hc{cc, cc ...} specific cost centre(s) (NOT STACKS!)",
421 " -hm{mod,mod...} all cost centres from the specified modules(s)",
422 " -hd{des,des...} closures with specified closure descriptions",
423 " -hy{typ,typ...} closures with specified type descriptions",
425 " -i<msec> Time between heap samples (msec, default: 20)",
427 " -xc Show current cost centre stack on raising an exception",
429 #endif /* PROFILING or PAR */
430 #if !defined(PROFILING) && defined(DEBUG)
432 " -h<break-down> Debugging Heap residency profile",
433 " (output file <program>.hp)",
434 " break-down: L = closure label (default)",
435 " T = closure type (constructor, thunk etc.)",
438 #if defined(TICKY_TICKY)
439 " -r<file> Produce reduction profiling statistics (with -rstderr for stderr)",
443 " -N<n> Use <n> PVMish processors in parallel (default: 2)",
444 /* NB: the -N<n> is implemented by the driver!! */
446 " -C<secs> Context-switch interval in seconds",
447 " (0 or no argument means switch as often as possible)",
448 " the default is .02 sec; resolution is .02 sec",
450 " -N<n> Use <n> OS threads (default: 1)",
452 #if defined(SMP) || defined(PAR)
453 " -e<size> Size of spark pools (default 100)",
456 " -t<num> Set maximum number of advisory threads per PE (default 32)",
457 " -qP Enable activity profile (output files in ~/<program>*.gr)",
458 " -qQ<size> Set pack-buffer size (default: 1024)",
459 " -qd Turn on PVM-ish debugging",
460 " -qO Disable output for performance measurement",
462 #if defined(SMP) || defined(PAR)
463 " -e<n> Maximum number of outstanding local sparks (default: 4096)",
466 " -d Turn on PVM-ish debugging",
467 " -O Disable output for performance measurement",
469 #if defined(GRAN) /* ToDo: fill in decent Docu here */
470 " -b... All GranSim options start with -b; see GranSim User's Guide for details",
473 "RTS options may also be specified using the GHCRTS environment variable.",
475 "Other RTS options may be available for programs compiled a different way.",
476 "The GHC User's Guide has full details.",
481 static __inline__ rtsBool
482 strequal(const char *a, const char * b)
484 return(strcmp(a, b) == 0);
488 setupRtsFlags(int *argc, char *argv[], int *rts_argc, char *rts_argv[])
490 rtsBool error = rtsFalse;
495 /* Remove directory from argv[0] -- default files in current directory */
497 if ((last_slash = (char *) strrchr(argv[0], '/')) != NULL)
498 strcpy(argv[0], last_slash+1);
506 // process arguments from the GHCRTS environment variable first
507 // (arguments from the command line override these).
509 char *ghc_rts = getenv("GHCRTS");
512 if (ghc_rts != NULL) {
515 while (isspace(*c1)) { c1++; };
517 while (!isspace(*c2) && *c2 != '\0') { c2++; };
519 if (c1 == c2) { break; }
521 if (*rts_argc < MAX_RTS_ARGS-1) {
523 strncpy(s, c1, c2-c1);
525 rts_argv[(*rts_argc)++] = s;
527 barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
531 } while (*c1 != '\0');
535 // Split arguments (argv) into PGM (argv) and RTS (rts_argv) parts
536 // argv[0] must be PGM argument -- leave in argv
538 for (mode = PGM; arg < total_arg; arg++) {
539 // The '--RTS' argument disables all future +RTS ... -RTS processing.
540 if (strequal("--RTS", argv[arg])) {
544 // The '--' argument is passed through to the program, but
545 // disables all further +RTS ... -RTS processing.
546 else if (strequal("--", argv[arg])) {
549 else if (strequal("+RTS", argv[arg])) {
552 else if (strequal("-RTS", argv[arg])) {
555 else if (mode == RTS && *rts_argc < MAX_RTS_ARGS-1) {
556 rts_argv[(*rts_argc)++] = argv[arg];
558 else if (mode == PGM) {
559 argv[(*argc)++] = argv[arg];
562 barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
565 // process remaining program arguments
566 for (; arg < total_arg; arg++) {
567 argv[(*argc)++] = argv[arg];
569 argv[*argc] = (char *) 0;
570 rts_argv[*rts_argc] = (char *) 0;
572 // Process RTS (rts_argv) part: mainly to determine statsfile
573 for (arg = 0; arg < *rts_argc; arg++) {
574 if (rts_argv[arg][0] != '-') {
576 prog_belch("unexpected RTS argument: %s", rts_argv[arg]);
580 switch(rts_argv[arg][1]) {
582 /* process: general args, then PROFILING-only ones,
583 then CONCURRENT-only, PARallel-only, GRAN-only,
584 TICKY-only (same order as defined in RtsFlags.lh);
585 within those groups, mostly in case-insensitive
587 Final group is x*, which allows for more options.
591 # define TICKY_BUILD_ONLY(x) x
593 # define TICKY_BUILD_ONLY(x) \
594 prog_belch("GHC not built for: ticky-ticky stats"); \
598 #if defined(PROFILING)
599 # define COST_CENTRE_USING_BUILD_ONLY(x) x
601 # define COST_CENTRE_USING_BUILD_ONLY(x) \
602 prog_belch("GHC not built for: -prof or -parallel"); \
607 # define PROFILING_BUILD_ONLY(x) x
609 # define PROFILING_BUILD_ONLY(x) \
610 prog_belch("GHC not built for: -prof"); \
615 # define SMP_BUILD_ONLY(x) x
617 # define SMP_BUILD_ONLY(x) \
618 prog_belch("GHC not built for: -smp"); \
623 # define PAR_BUILD_ONLY(x) x
625 # define PAR_BUILD_ONLY(x) \
626 prog_belch("GHC not built for: -parallel"); \
630 #if defined(SMP) || defined(PAR)
631 # define PAR_OR_SMP_BUILD_ONLY(x) x
633 # define PAR_OR_SMP_BUILD_ONLY(x) \
634 prog_belch("GHC not built for: -parallel or -smp"); \
639 # define GRAN_BUILD_ONLY(x) x
641 # define GRAN_BUILD_ONLY(x) \
642 prog_belch("GHC not built for: -gransim"); \
646 /* =========== GENERAL ========================== */
652 RtsFlags.GcFlags.minAllocAreaSize
653 = decode(rts_argv[arg]+2) / BLOCK_SIZE;
654 if (RtsFlags.GcFlags.minAllocAreaSize <= 0) {
655 bad_option(rts_argv[arg]);
660 RtsFlags.GcFlags.ringBell = rtsTrue;
664 if (rts_argv[arg][2] != '\0') {
665 RtsFlags.GcFlags.compactThreshold =
666 atof(rts_argv[arg]+2);
668 RtsFlags.GcFlags.compact = rtsTrue;
673 RtsFlags.GcFlags.oldGenFactor = atof(rts_argv[arg]+2);
675 if (RtsFlags.GcFlags.oldGenFactor < 0)
676 bad_option( rts_argv[arg] );
681 if (isdigit(rts_argv[arg][2])) {/* Set all debugging options in one */
682 /* hack warning: interpret the flags as a binary number */
683 nat n = decode(rts_argv[arg]+2);
684 set_debug_options(n);
690 RtsFlags.GcFlags.maxStkSize =
691 decode(rts_argv[arg]+2) / sizeof(W_);
693 if (RtsFlags.GcFlags.maxStkSize == 0)
694 bad_option( rts_argv[arg] );
698 RtsFlags.GcFlags.initialStkSize =
699 decode(rts_argv[arg]+2) / sizeof(W_);
701 if (RtsFlags.GcFlags.initialStkSize == 0)
702 bad_option( rts_argv[arg] );
706 RtsFlags.GcFlags.maxHeapSize =
707 decode(rts_argv[arg]+2) / BLOCK_SIZE;
708 /* user give size in *bytes* but "maxHeapSize" is in *blocks* */
710 if (RtsFlags.GcFlags.maxHeapSize <= 0) {
711 bad_option(rts_argv[arg]);
716 RtsFlags.GcFlags.pcFreeHeap = atof(rts_argv[arg]+2);
718 if (RtsFlags.GcFlags.pcFreeHeap < 0 ||
719 RtsFlags.GcFlags.pcFreeHeap > 100)
720 bad_option( rts_argv[arg] );
724 RtsFlags.GcFlags.generations = decode(rts_argv[arg]+2);
725 if (RtsFlags.GcFlags.generations < 1) {
726 bad_option(rts_argv[arg]);
731 RtsFlags.GcFlags.steps = decode(rts_argv[arg]+2);
732 if (RtsFlags.GcFlags.steps < 1) {
733 bad_option(rts_argv[arg]);
738 RtsFlags.GcFlags.heapSizeSuggestion =
739 decode(rts_argv[arg]+2) / BLOCK_SIZE;
741 if (RtsFlags.GcFlags.heapSizeSuggestion <= 0) {
742 bad_option(rts_argv[arg]);
746 #ifdef RTS_GTK_FRONTPANEL
748 RtsFlags.GcFlags.frontpanel = rtsTrue;
753 RtsFlags.GcFlags.giveStats = VERBOSE_GC_STATS;
757 RtsFlags.GcFlags.giveStats = SUMMARY_GC_STATS;
761 RtsFlags.GcFlags.giveStats = ONELINE_GC_STATS;
766 /* Opening all those files would almost certainly fail... */
767 // RtsFlags.ParFlags.ParStats.Full = rtsTrue;
768 RtsFlags.GcFlags.statsFile = stderr; /* temporary; ToDo: rm */
770 RtsFlags.GcFlags.statsFile
771 = open_stats_file(arg, *argc, argv,
772 *rts_argc, rts_argv, STAT_FILENAME_FMT);
774 if (RtsFlags.GcFlags.statsFile == NULL) error = rtsTrue;
779 RtsFlags.GcFlags.squeezeUpdFrames = rtsFalse;
782 /* =========== PROFILING ========================== */
784 case 'P': /* detailed cost centre profiling (time/alloc) */
785 case 'p': /* cost centre profiling (time/alloc) */
786 COST_CENTRE_USING_BUILD_ONLY(
787 switch (rts_argv[arg][2]) {
789 RtsFlags.CcFlags.doCostCentres = COST_CENTRES_XML;
792 RtsFlags.CcFlags.doCostCentres = COST_CENTRES_ALL;
795 if (rts_argv[arg][1] == 'P') {
796 RtsFlags.CcFlags.doCostCentres =
797 COST_CENTRES_VERBOSE;
799 RtsFlags.CcFlags.doCostCentres =
800 COST_CENTRES_SUMMARY;
806 case 'h': /* serial heap profile */
807 #if !defined(PROFILING) && defined(DEBUG)
808 switch (rts_argv[arg][2]) {
811 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_INFOPTR;
814 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE;
817 prog_belch("invalid heap profile option: %s",rts_argv[arg]);
821 PROFILING_BUILD_ONLY(
822 switch (rts_argv[arg][2]) {
825 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CCS;
828 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_MOD;
831 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_DESCR;
834 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_TYPE;
836 case 'c': /* cost centre label select */
837 case 'm': /* cost centre module select */
838 case 'd': /* closure descr select */
839 case 'y': /* closure type select */
840 {char *left = strchr(rts_argv[arg], '{');
841 char *right = strrchr(rts_argv[arg], '}');
842 if (! left || ! right ||
843 strrchr(rts_argv[arg], '{') != left ||
844 strchr(rts_argv[arg], '}') != right) {
846 "Invalid heap profiling selection bracketing\n %s\n",
851 switch (rts_argv[arg][2]) {
852 case 'c': /* cost centre label select */
853 RtsFlags.ProfFlags.ccSelector = left + 1;
855 case 'm': /* cost centre module select */
856 RtsFlags.ProfFlags.modSelector = left + 1;
858 case 'd': /* closure descr select */
859 RtsFlags.ProfFlags.descrSelector = left + 1;
861 case 'y': /* closure type select */
862 RtsFlags.ProfFlags.typeSelector = left + 1;
869 prog_belch("invalid heap profile option: %s",rts_argv[arg]);
877 #if defined(PROFILING)
878 case 'i': /* heap sample interval */
879 if (rts_argv[arg][2] == '\0') {
884 /* Convert to milliseconds */
885 cst = (I_) ((atof(rts_argv[arg]+2) * 1000));
886 cst = (cst / CS_MIN_MILLISECS) * CS_MIN_MILLISECS;
887 if (cst != 0 && cst < CS_MIN_MILLISECS)
888 cst = CS_MIN_MILLISECS;
890 RtsFlags.ProfFlags.profileFrequency = cst;
897 /* =========== CONCURRENT ========================= */
898 case 'C': /* context switch interval */
899 if (rts_argv[arg][2] == '\0')
900 RtsFlags.ConcFlags.ctxtSwitchTime = 0;
904 /* Convert to milliseconds */
905 cst = (I_) ((atof(rts_argv[arg]+2) * 1000));
906 cst = (cst / CS_MIN_MILLISECS) * CS_MIN_MILLISECS;
907 if (cst != 0 && cst < CS_MIN_MILLISECS)
908 cst = CS_MIN_MILLISECS;
910 RtsFlags.ConcFlags.ctxtSwitchTime = cst;
917 if (rts_argv[arg][2] != '\0') {
918 RtsFlags.ParFlags.nNodes
919 = strtol(rts_argv[arg]+2, (char **) NULL, 10);
920 if (RtsFlags.ParFlags.nNodes <= 0) {
921 prog_belch("bad value for -N");
927 /* =========== PARALLEL =========================== */
929 PAR_OR_SMP_BUILD_ONLY(
930 if (rts_argv[arg][2] != '\0') {
931 RtsFlags.ParFlags.maxLocalSparks
932 = strtol(rts_argv[arg]+2, (char **) NULL, 10);
933 if (RtsFlags.ParFlags.maxLocalSparks <= 0) {
934 prog_belch("bad value for -e");
942 process_par_option(arg, rts_argc, rts_argv, &error);
945 /* =========== GRAN =============================== */
949 process_gran_option(arg, rts_argc, rts_argv, &error);
952 /* =========== TICKY ============================== */
954 case 'r': /* Basic profiling stats */
957 RtsFlags.TickyFlags.showTickyStats = rtsTrue;
958 RtsFlags.TickyFlags.tickyFile
959 = open_stats_file(arg, *argc, argv,
960 *rts_argc, rts_argv, TICKY_FILENAME_FMT);
962 if (RtsFlags.TickyFlags.tickyFile == NULL) error = rtsTrue;
965 /* =========== EXTENDED OPTIONS =================== */
967 case 'x': /* Extend the argument space */
968 switch(rts_argv[arg][2]) {
970 prog_belch("incomplete RTS option: %s",rts_argv[arg]);
974 case 'c': /* Debugging tool: show current cost centre on an exception */
975 PROFILING_BUILD_ONLY(
976 RtsFlags.ProfFlags.showCCSOnException = rtsTrue;
979 /* The option prefix '-xx' is reserved for future extension. KSW 1999-11. */
982 prog_belch("unknown RTS option: %s",rts_argv[arg]);
986 break; /* defensive programming */
988 /* =========== OH DEAR ============================ */
990 prog_belch("unknown RTS option: %s",rts_argv[arg]);
1000 for (p = usage_text; *p; p++)
1002 stg_exit(EXIT_FAILURE);
1008 //@node GranSim specific options, Aux fcts, Command-line option parsing routines
1009 //@subsection GranSim specific options
1012 enable_GranSimLight(void) {
1014 fprintf(stderr,"GrAnSim Light enabled (infinite number of processors; 0 communication costs)\n");
1015 RtsFlags.GranFlags.Light=rtsTrue;
1016 RtsFlags.GranFlags.Costs.latency =
1017 RtsFlags.GranFlags.Costs.fetchtime =
1018 RtsFlags.GranFlags.Costs.additional_latency =
1019 RtsFlags.GranFlags.Costs.gunblocktime =
1020 RtsFlags.GranFlags.Costs.lunblocktime =
1021 RtsFlags.GranFlags.Costs.threadcreatetime =
1022 RtsFlags.GranFlags.Costs.threadqueuetime =
1023 RtsFlags.GranFlags.Costs.threadscheduletime =
1024 RtsFlags.GranFlags.Costs.threaddescheduletime =
1025 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1027 RtsFlags.GranFlags.Costs.mpacktime =
1028 RtsFlags.GranFlags.Costs.munpacktime = 0;
1030 RtsFlags.GranFlags.DoFairSchedule = rtsTrue;
1031 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
1032 RtsFlags.GranFlags.DoAlwaysCreateThreads = rtsTrue;
1033 /* FetchStrategy is irrelevant in GrAnSim-Light */
1035 /* GrAnSim Light often creates an abundance of parallel threads,
1036 each with its own stack etc. Therefore, it's in general a good
1037 idea to use small stack chunks (use the -o<size> option to
1040 // RtsFlags.ConcFlags.stkChunkSize = 100;
1042 RtsFlags.GranFlags.proc = 1;
1046 process_gran_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error)
1048 if (rts_argv[arg][1] != 'b') /* All GranSim options start with -b */
1051 /* or a ridiculously idealised simulator */
1052 if(strcmp((rts_argv[arg]+2),"oring")==0) {
1053 RtsFlags.GranFlags.Costs.latency =
1054 RtsFlags.GranFlags.Costs.fetchtime =
1055 RtsFlags.GranFlags.Costs.additional_latency =
1056 RtsFlags.GranFlags.Costs.gunblocktime =
1057 RtsFlags.GranFlags.Costs.lunblocktime =
1058 RtsFlags.GranFlags.Costs.threadcreatetime =
1059 RtsFlags.GranFlags.Costs.threadqueuetime =
1060 RtsFlags.GranFlags.Costs.threadscheduletime =
1061 RtsFlags.GranFlags.Costs.threaddescheduletime =
1062 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1064 RtsFlags.GranFlags.Costs.mpacktime =
1065 RtsFlags.GranFlags.Costs.munpacktime = 0;
1067 RtsFlags.GranFlags.Costs.arith_cost =
1068 RtsFlags.GranFlags.Costs.float_cost =
1069 RtsFlags.GranFlags.Costs.load_cost =
1070 RtsFlags.GranFlags.Costs.store_cost =
1071 RtsFlags.GranFlags.Costs.branch_cost = 0;
1073 RtsFlags.GranFlags.Costs.heapalloc_cost = 1;
1075 /* ++RtsFlags.GranFlags.DoFairSchedule; */
1076 RtsFlags.GranFlags.DoStealThreadsFirst = rtsTrue; /* -bZ */
1077 RtsFlags.GranFlags.DoThreadMigration = rtsTrue; /* -bM */
1078 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue; /* -bP */
1082 /* or a somewhat idealised simulator */
1083 if(strcmp((rts_argv[arg]+2),"onzo")==0) {
1084 RtsFlags.GranFlags.Costs.latency =
1085 RtsFlags.GranFlags.Costs.fetchtime =
1086 RtsFlags.GranFlags.Costs.additional_latency =
1087 RtsFlags.GranFlags.Costs.gunblocktime =
1088 RtsFlags.GranFlags.Costs.lunblocktime =
1089 RtsFlags.GranFlags.Costs.threadcreatetime =
1090 RtsFlags.GranFlags.Costs.threadqueuetime =
1091 RtsFlags.GranFlags.Costs.threadscheduletime =
1092 RtsFlags.GranFlags.Costs.threaddescheduletime =
1093 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1095 RtsFlags.GranFlags.Costs.mpacktime =
1096 RtsFlags.GranFlags.Costs.munpacktime = 0;
1098 RtsFlags.GranFlags.Costs.heapalloc_cost = 1;
1100 /* RtsFlags.GranFlags.DoFairSchedule = rtsTrue; */ /* -b-R */
1101 /* RtsFlags.GranFlags.DoStealThreadsFirst = rtsTrue; */ /* -b-T */
1102 RtsFlags.GranFlags.DoAsyncFetch = rtsTrue; /* -bZ */
1103 RtsFlags.GranFlags.DoThreadMigration = rtsTrue; /* -bM */
1104 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue; /* -bP */
1105 # if defined(GRAN_CHECK) && defined(GRAN)
1106 RtsFlags.GranFlags.Debug.event_stats = rtsTrue; /* print event statistics */
1111 /* Communication and task creation cost parameters */
1112 switch(rts_argv[arg][2]) {
1114 IgnoreYields = rtsTrue; // HWL HACK
1118 enable_GranSimLight(); /* set flags for GrAnSim-Light mode */
1122 if (rts_argv[arg][3] != '\0')
1124 RtsFlags.GranFlags.Costs.gunblocktime =
1125 RtsFlags.GranFlags.Costs.latency = decode(rts_argv[arg]+3);
1126 RtsFlags.GranFlags.Costs.fetchtime = 2*RtsFlags.GranFlags.Costs.latency;
1129 RtsFlags.GranFlags.Costs.latency = LATENCY;
1133 if (rts_argv[arg][3] != '\0')
1134 RtsFlags.GranFlags.Costs.additional_latency = decode(rts_argv[arg]+3);
1136 RtsFlags.GranFlags.Costs.additional_latency = ADDITIONAL_LATENCY;
1140 if (rts_argv[arg][3] != '\0')
1141 RtsFlags.GranFlags.Costs.mpacktime = decode(rts_argv[arg]+3);
1143 RtsFlags.GranFlags.Costs.mpacktime = MSGPACKTIME;
1147 if (rts_argv[arg][3] != '\0')
1148 RtsFlags.GranFlags.Costs.mtidytime = decode(rts_argv[arg]+3);
1150 RtsFlags.GranFlags.Costs.mtidytime = 0;
1154 if (rts_argv[arg][3] != '\0')
1155 RtsFlags.GranFlags.Costs.munpacktime = decode(rts_argv[arg]+3);
1157 RtsFlags.GranFlags.Costs.munpacktime = MSGUNPACKTIME;
1161 if (rts_argv[arg][3] != '\0')
1162 RtsFlags.GranFlags.Costs.fetchtime = decode(rts_argv[arg]+3);
1164 RtsFlags.GranFlags.Costs.fetchtime = FETCHTIME;
1168 if (rts_argv[arg][3] != '\0')
1169 RtsFlags.GranFlags.Costs.gunblocktime = decode(rts_argv[arg]+3);
1171 RtsFlags.GranFlags.Costs.gunblocktime = GLOBALUNBLOCKTIME;
1175 if (rts_argv[arg][3] != '\0')
1176 RtsFlags.GranFlags.Costs.lunblocktime = decode(rts_argv[arg]+3);
1178 RtsFlags.GranFlags.Costs.lunblocktime = LOCALUNBLOCKTIME;
1181 /* Thread-related metrics */
1183 if (rts_argv[arg][3] != '\0')
1184 RtsFlags.GranFlags.Costs.threadcreatetime = decode(rts_argv[arg]+3);
1186 RtsFlags.GranFlags.Costs.threadcreatetime = THREADCREATETIME;
1190 if (rts_argv[arg][3] != '\0')
1191 RtsFlags.GranFlags.Costs.threadqueuetime = decode(rts_argv[arg]+3);
1193 RtsFlags.GranFlags.Costs.threadqueuetime = THREADQUEUETIME;
1197 if (rts_argv[arg][3] != '\0')
1198 RtsFlags.GranFlags.Costs.threadscheduletime = decode(rts_argv[arg]+3);
1200 RtsFlags.GranFlags.Costs.threadscheduletime = THREADSCHEDULETIME;
1202 RtsFlags.GranFlags.Costs.threadcontextswitchtime = RtsFlags.GranFlags.Costs.threadscheduletime
1203 + RtsFlags.GranFlags.Costs.threaddescheduletime;
1207 if (rts_argv[arg][3] != '\0')
1208 RtsFlags.GranFlags.Costs.threaddescheduletime = decode(rts_argv[arg]+3);
1210 RtsFlags.GranFlags.Costs.threaddescheduletime = THREADDESCHEDULETIME;
1212 RtsFlags.GranFlags.Costs.threadcontextswitchtime = RtsFlags.GranFlags.Costs.threadscheduletime
1213 + RtsFlags.GranFlags.Costs.threaddescheduletime;
1216 /* Instruction Cost Metrics */
1218 if (rts_argv[arg][3] != '\0')
1219 RtsFlags.GranFlags.Costs.arith_cost = decode(rts_argv[arg]+3);
1221 RtsFlags.GranFlags.Costs.arith_cost = ARITH_COST;
1225 if (rts_argv[arg][3] != '\0')
1226 RtsFlags.GranFlags.Costs.float_cost = decode(rts_argv[arg]+3);
1228 RtsFlags.GranFlags.Costs.float_cost = FLOAT_COST;
1232 if (rts_argv[arg][3] != '\0')
1233 RtsFlags.GranFlags.Costs.branch_cost = decode(rts_argv[arg]+3);
1235 RtsFlags.GranFlags.Costs.branch_cost = BRANCH_COST;
1239 if (rts_argv[arg][3] != '\0')
1240 RtsFlags.GranFlags.Costs.load_cost = decode(rts_argv[arg]+3);
1242 RtsFlags.GranFlags.Costs.load_cost = LOAD_COST;
1246 if (rts_argv[arg][3] != '\0')
1247 RtsFlags.GranFlags.Costs.store_cost = decode(rts_argv[arg]+3);
1249 RtsFlags.GranFlags.Costs.store_cost = STORE_COST;
1253 if (rts_argv[arg][3] != '\0')
1254 RtsFlags.GranFlags.Costs.heapalloc_cost = decode(rts_argv[arg]+3);
1256 RtsFlags.GranFlags.Costs.heapalloc_cost = 0;
1260 RtsFlags.GranFlags.DoAsyncFetch = rtsTrue;
1261 if (rts_argv[arg][3] != '\0')
1262 RtsFlags.GranFlags.FetchStrategy = decode(rts_argv[arg]+3);
1264 RtsFlags.GranFlags.FetchStrategy = 2;
1265 if (RtsFlags.GranFlags.FetchStrategy == 0)
1266 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
1269 case 'K': /* sort overhead (per elem in spark list) */
1270 if (rts_argv[arg][3] != '\0')
1271 RtsFlags.GranFlags.Costs.pri_spark_overhead = decode(rts_argv[arg]+3);
1273 RtsFlags.GranFlags.Costs.pri_spark_overhead = PRI_SPARK_OVERHEAD;
1274 fprintf(stderr,"Overhead for pri spark: %d (per elem).\n",
1275 RtsFlags.GranFlags.Costs.pri_spark_overhead);
1278 case 'O': /* sort overhead (per elem in spark list) */
1279 if (rts_argv[arg][3] != '\0')
1280 RtsFlags.GranFlags.Costs.pri_sched_overhead = decode(rts_argv[arg]+3);
1282 RtsFlags.GranFlags.Costs.pri_sched_overhead = PRI_SCHED_OVERHEAD;
1283 fprintf(stderr,"Overhead for pri sched: %d (per elem).\n",
1284 RtsFlags.GranFlags.Costs.pri_sched_overhead);
1287 /* General Parameters */
1289 if (rts_argv[arg][3] != '\0')
1291 RtsFlags.GranFlags.proc = decode(rts_argv[arg]+3);
1292 if (RtsFlags.GranFlags.proc==0) {
1293 enable_GranSimLight(); /* set flags for GrAnSim-Light mode */
1294 } else if (RtsFlags.GranFlags.proc > MAX_PROC ||
1295 RtsFlags.GranFlags.proc < 1)
1297 fprintf(stderr,"setupRtsFlags: no more than %u processors
1304 RtsFlags.GranFlags.proc = MAX_PROC;
1308 RtsFlags.GranFlags.Fishing = rtsTrue;
1309 if (rts_argv[arg][3] != '\0')
1310 RtsFlags.GranFlags.maxFishes = decode(rts_argv[arg]+3);
1312 RtsFlags.GranFlags.maxFishes = MAX_FISHES;
1316 if (rts_argv[arg][3] != '\0')
1317 RtsFlags.GranFlags.time_slice = decode(rts_argv[arg]+3);
1319 RtsFlags.GranFlags.time_slice = GRAN_TIME_SLICE;
1323 RtsFlags.GranFlags.DoAlwaysCreateThreads=rtsTrue;
1324 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1328 fprintf(stderr,"Bulk fetching enabled.\n");
1329 RtsFlags.GranFlags.DoBulkFetching=rtsTrue;
1333 fprintf(stderr,"Thread migration enabled.\n");
1334 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1338 fprintf(stderr,"Fair Scheduling enabled.\n");
1339 RtsFlags.GranFlags.DoFairSchedule=rtsTrue;
1343 fprintf(stderr,"Priority Scheduling enabled.\n");
1344 RtsFlags.GranFlags.DoPriorityScheduling=rtsTrue;
1348 RtsFlags.GranFlags.DoStealThreadsFirst=rtsTrue;
1349 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1353 RtsFlags.GranFlags.DoAsyncFetch=rtsTrue;
1357 /* RtsFlags.GranFlags.SimplifiedFetch=rtsTrue; */
1361 RtsFlags.GranFlags.PreferSparksOfLocalNodes=rtsTrue;
1365 RtsFlags.GranFlags.GranSimStats.Binary=rtsTrue;
1369 /* format is -bP<c> where <c> is one char describing kind of profile */
1370 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue;
1371 switch(rts_argv[arg][3]) {
1372 case '\0': break; // nothing special, just an ordinary profile
1373 case '0': RtsFlags.GranFlags.GranSimStats.Suppressed = rtsTrue;
1375 case 'b': RtsFlags.GranFlags.GranSimStats.Binary = rtsTrue;
1377 case 's': RtsFlags.GranFlags.GranSimStats.Sparks = rtsTrue;
1379 case 'h': RtsFlags.GranFlags.GranSimStats.Heap = rtsTrue;
1381 case 'n': RtsFlags.GranFlags.GranSimStats.NewLogfile = rtsTrue;
1383 case 'g': RtsFlags.GranFlags.GranSimStats.Global = rtsTrue;
1385 default: barf("Unknown option -bP%c", rts_argv[arg][3]);
1390 RtsFlags.GranFlags.GranSimStats.Sparks=rtsTrue;
1394 RtsFlags.GranFlags.GranSimStats.Heap=rtsTrue;
1397 case 'Y': /* syntax: -bY<n>[,<n>] n ... pos int */
1398 if (rts_argv[arg][3] != '\0') {
1401 arg0 = rts_argv[arg]+3;
1402 if ((tmp = strstr(arg0,","))==NULL) {
1403 RtsFlags.GranFlags.SparkPriority = decode(arg0);
1404 fprintf(stderr,"SparkPriority: %u.\n",RtsFlags.GranFlags.SparkPriority);
1407 RtsFlags.GranFlags.SparkPriority = decode(arg0);
1408 RtsFlags.GranFlags.SparkPriority2 = decode(tmp);
1409 fprintf(stderr,"SparkPriority: %u.\n",
1410 RtsFlags.GranFlags.SparkPriority);
1411 fprintf(stderr,"SparkPriority2:%u.\n",
1412 RtsFlags.GranFlags.SparkPriority2);
1413 if (RtsFlags.GranFlags.SparkPriority2 <
1414 RtsFlags.GranFlags.SparkPriority) {
1415 fprintf(stderr,"WARNING: 2nd pri < main pri (%u<%u); 2nd pri has no effect\n",
1416 RtsFlags.GranFlags.SparkPriority2,
1417 RtsFlags.GranFlags.SparkPriority);
1421 /* plain pri spark is now invoked with -bX
1422 RtsFlags.GranFlags.DoPrioritySparking = 1;
1423 fprintf(stderr,"PrioritySparking.\n");
1429 if (rts_argv[arg][3] != '\0') {
1430 RtsFlags.GranFlags.ThunksToPack = decode(rts_argv[arg]+3);
1432 RtsFlags.GranFlags.ThunksToPack = 1;
1434 fprintf(stderr,"Thunks To Pack in one packet: %u.\n",
1435 RtsFlags.GranFlags.ThunksToPack);
1439 RtsFlags.GranFlags.RandomSteal = rtsFalse;
1440 fprintf(stderr,"Deterministic mode (no random stealing)\n");
1443 /* The following class of options contains eXperimental */
1444 /* features in connection with exploiting granularity */
1445 /* information. I.e. if -bY is chosen these options */
1446 /* tell the RTS what to do with the supplied info --HWL */
1449 if (rts_argv[arg][3] != '\0') {
1450 RtsFlags.GranFlags.packBufferSize_internal = decode(rts_argv[arg]+3);
1452 RtsFlags.GranFlags.packBufferSize_internal = GRANSIM_DEFAULT_PACK_BUFFER_SIZE;
1454 fprintf(stderr,"Size of GranSim internal pack buffer: %u.\n",
1455 RtsFlags.GranFlags.packBufferSize_internal);
1459 switch(rts_argv[arg][3]) {
1462 RtsFlags.GranFlags.DoPrioritySparking = 1;
1463 fprintf(stderr,"Priority Sparking with Normal Priorities.\n");
1464 RtsFlags.GranFlags.InversePriorities = rtsFalse;
1465 RtsFlags.GranFlags.RandomPriorities = rtsFalse;
1466 RtsFlags.GranFlags.IgnorePriorities = rtsFalse;
1470 RtsFlags.GranFlags.DoPrioritySparking = 1;
1471 fprintf(stderr,"Priority Sparking with Inverse Priorities.\n");
1472 RtsFlags.GranFlags.InversePriorities++;
1476 RtsFlags.GranFlags.DoPrioritySparking = 1;
1477 fprintf(stderr,"Priority Sparking with Random Priorities.\n");
1478 RtsFlags.GranFlags.RandomPriorities++;
1482 RtsFlags.GranFlags.DoPrioritySparking = 1;
1483 fprintf(stderr,"Priority Sparking with No Priorities.\n");
1484 RtsFlags.GranFlags.IgnorePriorities++;
1488 bad_option( rts_argv[arg] );
1494 switch(rts_argv[arg][3]) {
1497 RtsFlags.GranFlags.DoAlwaysCreateThreads=rtsFalse;
1498 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1502 RtsFlags.GranFlags.DoBulkFetching=rtsFalse;
1506 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1510 RtsFlags.GranFlags.DoFairSchedule=rtsFalse;
1514 RtsFlags.GranFlags.DoStealThreadsFirst=rtsFalse;
1515 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1519 RtsFlags.GranFlags.DoAsyncFetch=rtsFalse;
1523 RtsFlags.GranFlags.PreferSparksOfLocalNodes=rtsFalse;
1527 RtsFlags.GranFlags.GranSimStats.Suppressed=rtsTrue;
1531 RtsFlags.GranFlags.GranSimStats.Sparks=rtsFalse;
1535 RtsFlags.GranFlags.GranSimStats.Heap=rtsFalse;
1539 RtsFlags.GranFlags.GranSimStats.Binary=rtsFalse;
1543 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
1547 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
1548 RtsFlags.GranFlags.SparkPriority = rtsFalse;
1552 RtsFlags.GranFlags.DoPriorityScheduling = rtsFalse;
1556 RtsFlags.GranFlags.RandomSteal = rtsFalse;
1560 bad_option( rts_argv[arg] );
1565 # if defined(GRAN_CHECK) && defined(GRAN)
1567 switch(rts_argv[arg][3]) {
1568 case 'Q': /* Set pack buffer size (same as 'Q' in GUM) */
1569 if (rts_argv[arg][4] != '\0') {
1570 RtsFlags.GranFlags.packBufferSize = decode(rts_argv[arg]+4);
1571 fprintf(stderr,"Pack buffer size: %d\n",
1572 RtsFlags.GranFlags.packBufferSize);
1574 fprintf(stderr, "setupRtsFlags: missing size of PackBuffer (for -Q)\n");
1580 if (isdigit(rts_argv[arg][3])) {/* Set all debugging options in one */
1581 /* hack warning: interpret the flags as a binary number */
1582 nat n = decode(rts_argv[arg]+3);
1583 set_GranSim_debug_options(n);
1586 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1587 if (rts_argv[arg][3] == gran_debug_opts_flags[i])
1590 if (i==MAX_GRAN_DEBUG_OPTION+1) {
1591 fprintf(stderr, "Valid GranSim debug options are:\n");
1592 help_GranSim_debug_options(MAX_GRAN_DEBUG_MASK);
1593 bad_option( rts_argv[arg] );
1594 } else { // flag found; now set it
1595 set_GranSim_debug_options(GRAN_DEBUG_MASK(i)); // 2^i
1601 case 'e': /* event trace; also -bD1 */
1602 fprintf(stderr,"DEBUG: event_trace; printing event trace.\n");
1603 RtsFlags.GranFlags.Debug.event_trace = rtsTrue;
1604 /* RtsFlags.GranFlags.event_trace=rtsTrue; */
1607 case 'E': /* event statistics; also -bD2 */
1608 fprintf(stderr,"DEBUG: event_stats; printing event statistics.\n");
1609 RtsFlags.GranFlags.Debug.event_stats = rtsTrue;
1610 /* RtsFlags.GranFlags.Debug |= 0x20; print event statistics */
1613 case 'f': /* thunkStealing; also -bD4 */
1614 fprintf(stderr,"DEBUG: thunkStealing; printing forwarding of FETCHNODES.\n");
1615 RtsFlags.GranFlags.Debug.thunkStealing = rtsTrue;
1616 /* RtsFlags.GranFlags.Debug |= 0x2; print fwd messages */
1619 case 'z': /* blockOnFetch; also -bD8 */
1620 fprintf(stderr,"DEBUG: blockOnFetch; check for blocked on fetch.\n");
1621 RtsFlags.GranFlags.Debug.blockOnFetch = rtsTrue;
1622 /* RtsFlags.GranFlags.Debug |= 0x4; debug non-reschedule-on-fetch */
1625 case 't': /* blockOnFetch_sanity; also -bD16 */
1626 fprintf(stderr,"DEBUG: blockOnFetch_sanity; check for TSO asleep on fetch.\n");
1627 RtsFlags.GranFlags.Debug.blockOnFetch_sanity = rtsTrue;
1628 /* RtsFlags.GranFlags.Debug |= 0x10; debug TSO asleep for fetch */
1631 case 'S': /* priSpark; also -bD32 */
1632 fprintf(stderr,"DEBUG: priSpark; priority sparking.\n");
1633 RtsFlags.GranFlags.Debug.priSpark = rtsTrue;
1636 case 's': /* priSched; also -bD64 */
1637 fprintf(stderr,"DEBUG: priSched; priority scheduling.\n");
1638 RtsFlags.GranFlags.Debug.priSched = rtsTrue;
1641 case 'F': /* findWork; also -bD128 */
1642 fprintf(stderr,"DEBUG: findWork; searching spark-pools (local & remote), thread queues for work.\n");
1643 RtsFlags.GranFlags.Debug.findWork = rtsTrue;
1646 case 'g': /* globalBlock; also -bD256 */
1647 fprintf(stderr,"DEBUG: globalBlock; blocking on remote closures (FETCHMEs etc in GUM).\n");
1648 RtsFlags.GranFlags.Debug.globalBlock = rtsTrue;
1651 case 'G': /* pack; also -bD512 */
1652 fprintf(stderr,"DEBUG: pack; routines for (un-)packing graph structures.\n");
1653 RtsFlags.GranFlags.Debug.pack = rtsTrue;
1656 case 'P': /* packBuffer; also -bD1024 */
1657 fprintf(stderr,"DEBUG: packBuffer; routines handling pack buffer (GranSim internal!).\n");
1658 RtsFlags.GranFlags.Debug.packBuffer = rtsTrue;
1661 case 'o': /* sortedQ; also -bD2048 */
1662 fprintf(stderr,"DEBUG: sortedQ; check whether spark/thread queues are sorted.\n");
1663 RtsFlags.GranFlags.Debug.sortedQ = rtsTrue;
1666 case 'r': /* randomSteal; also -bD4096 */
1667 fprintf(stderr,"DEBUG: randomSteal; stealing sparks/threads from random PEs.\n");
1668 RtsFlags.GranFlags.Debug.randomSteal = rtsTrue;
1671 case 'q': /* checkSparkQ; also -bD8192 */
1672 fprintf(stderr,"DEBUG: checkSparkQ; check consistency of the spark queues.\n");
1673 RtsFlags.GranFlags.Debug.checkSparkQ = rtsTrue;
1676 case ':': /* checkLight; also -bD16384 */
1677 fprintf(stderr,"DEBUG: checkLight; check GranSim-Light setup.\n");
1678 RtsFlags.GranFlags.Debug.checkLight = rtsTrue;
1681 case 'b': /* bq; also -bD32768 */
1682 fprintf(stderr,"DEBUG: bq; check blocking queues\n");
1683 RtsFlags.GranFlags.Debug.bq = rtsTrue;
1686 case 'd': /* all options turned on */
1687 fprintf(stderr,"DEBUG: all options turned on.\n");
1688 set_GranSim_debug_options(MAX_GRAN_DEBUG_MASK);
1689 /* RtsFlags.GranFlags.Debug |= 0x40; */
1693 /* RtsFlags.GranFlags.Debug = 1; */
1699 # endif /* GRAN_CHECK */
1701 bad_option( rts_argv[arg] );
1707 Interpret n as a binary number masking GranSim debug options and set the
1708 correxponding option. See gran_debug_opts_strs for explanations of the flags.
1711 set_GranSim_debug_options(nat n) {
1714 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1716 fprintf(stderr, gran_debug_opts_strs[i]);
1718 case 0: RtsFlags.GranFlags.Debug.event_trace = rtsTrue; break;
1719 case 1: RtsFlags.GranFlags.Debug.event_stats = rtsTrue; break;
1720 case 2: RtsFlags.GranFlags.Debug.bq = rtsTrue; break;
1721 case 3: RtsFlags.GranFlags.Debug.pack = rtsTrue; break;
1722 case 4: RtsFlags.GranFlags.Debug.checkSparkQ = rtsTrue; break;
1723 case 5: RtsFlags.GranFlags.Debug.thunkStealing = rtsTrue; break;
1724 case 6: RtsFlags.GranFlags.Debug.randomSteal = rtsTrue; break;
1725 case 7: RtsFlags.GranFlags.Debug.findWork = rtsTrue; break;
1726 case 8: RtsFlags.GranFlags.Debug.unused = rtsTrue; break;
1727 case 9: RtsFlags.GranFlags.Debug.pri = rtsTrue; break;
1728 case 10: RtsFlags.GranFlags.Debug.checkLight = rtsTrue; break;
1729 case 11: RtsFlags.GranFlags.Debug.sortedQ = rtsTrue; break;
1730 case 12: RtsFlags.GranFlags.Debug.blockOnFetch = rtsTrue; break;
1731 case 13: RtsFlags.GranFlags.Debug.packBuffer = rtsTrue; break;
1732 case 14: RtsFlags.GranFlags.Debug.blockOnFetch_sanity = rtsTrue; break;
1733 default: barf("set_GranSim_debug_options: only %d debug options expected");
1739 Print one line explanation for each of the GranSim debug options specified
1743 help_GranSim_debug_options(nat n) {
1746 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1748 fprintf(stderr, gran_debug_opts_strs[i]);
1754 process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error)
1757 if (rts_argv[arg][1] != 'q') { /* All GUM options start with -q */
1758 belch("Warning: GUM option does not start with -q: %s", rts_argv[arg]);
1762 /* Communication and task creation cost parameters */
1763 switch(rts_argv[arg][2]) {
1764 case 'e': /* -qe<n> ... allow <n> local sparks */
1765 if (rts_argv[arg][3] != '\0') { /* otherwise, stick w/ the default */
1766 RtsFlags.ParFlags.maxLocalSparks
1767 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1769 if (RtsFlags.ParFlags.maxLocalSparks <= 0) {
1770 belch("setupRtsFlags: bad value for -e\n");
1774 IF_PAR_DEBUG(verbose,
1775 belch("-qe<n>: max %d local sparks",
1776 RtsFlags.ParFlags.maxLocalSparks));
1780 if (rts_argv[arg][3] != '\0') {
1781 RtsFlags.ParFlags.maxThreads
1782 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1784 belch("setupRtsFlags: missing size for -qt\n");
1787 IF_PAR_DEBUG(verbose,
1788 belch("-qt<n>: max %d threads",
1789 RtsFlags.ParFlags.maxThreads));
1793 if (rts_argv[arg][3] != '\0')
1794 RtsFlags.ParFlags.maxFishes = decode(rts_argv[arg]+3);
1796 RtsFlags.ParFlags.maxFishes = MAX_FISHES;
1798 IF_PAR_DEBUG(verbose,
1799 belch("-qf<n>: max %d fishes sent out at one time",
1800 RtsFlags.ParFlags.maxFishes));
1804 if (rts_argv[arg][3] != '\0') {
1805 RtsFlags.ParFlags.fishDelay
1806 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1808 belch("setupRtsFlags: missing fish delay time for -qF\n");
1811 IF_PAR_DEBUG(verbose,
1812 belch("-qF<n>: fish delay time %d us",
1813 RtsFlags.ParFlags.fishDelay));
1817 RtsFlags.ParFlags.outputDisabled = rtsTrue;
1818 IF_PAR_DEBUG(verbose,
1819 belch("-qO: output disabled"));
1822 case 'g': /* -qg<n> ... globalisation scheme */
1823 if (rts_argv[arg][3] != '\0') {
1824 RtsFlags.ParFlags.globalising = decode(rts_argv[arg]+3);
1826 belch("setupRtsFlags: missing identifier for globalisation scheme (for -qg)\n");
1829 IF_PAR_DEBUG(verbose,
1830 belch("-qg<n>: globalisation scheme set to %d",
1831 RtsFlags.ParFlags.globalising));
1834 case 'h': /* -qh<n> ... max number of thunks (except root) in packet */
1835 if (rts_argv[arg][3] != '\0') {
1836 RtsFlags.ParFlags.thunksToPack = decode(rts_argv[arg]+3);
1838 belch("setupRtsFlags: missing number of thunks per packet (for -qh)\n");
1841 IF_PAR_DEBUG(verbose,
1842 belch("-qh<n>: thunks per packet set to %d",
1843 RtsFlags.ParFlags.thunksToPack));
1846 case 'P': /* -qP for writing a log file */
1847 //RtsFlags.ParFlags.ParStats.Full = rtsFalse;
1848 /* same encoding as in GranSim after -bP */
1849 switch(rts_argv[arg][3]) {
1850 case '\0': RtsFlags.ParFlags.ParStats.Full = rtsTrue;
1851 break; // nothing special, just an ordinary profile
1852 case '0': RtsFlags.ParFlags.ParStats.Suppressed = rtsTrue;
1853 RtsFlags.ParFlags.ParStats.Full = rtsFalse;
1855 case 'b': RtsFlags.ParFlags.ParStats.Binary = rtsTrue;
1857 case 's': RtsFlags.ParFlags.ParStats.Sparks = rtsTrue;
1859 //case 'h': RtsFlags.parFlags.ParStats.Heap = rtsTrue;
1861 case 'n': RtsFlags.ParFlags.ParStats.NewLogfile = rtsTrue;
1864 # if defined(PAR_TICKY)
1865 RtsFlags.ParFlags.ParStats.Global = rtsTrue;
1867 fprintf(stderr,"-qPg is only possible for a PAR_TICKY RTS, which this is not");
1868 stg_exit(EXIT_FAILURE);
1871 default: barf("Unknown option -qP%c", rts_argv[arg][2]);
1873 IF_PAR_DEBUG(verbose,
1874 belch("(-qP) writing to log-file (RtsFlags.ParFlags.ParStats.Full=%s)",
1875 (RtsFlags.ParFlags.ParStats.Full ? "rtsTrue" : "rtsFalse")));
1878 case 'Q': /* -qQ<n> ... set pack buffer size to <n> */
1879 if (rts_argv[arg][3] != '\0') {
1880 RtsFlags.ParFlags.packBufferSize = decode(rts_argv[arg]+3);
1882 belch("setupRtsFlags: missing size of PackBuffer (for -qQ)\n");
1885 IF_PAR_DEBUG(verbose,
1886 belch("-qQ<n>: pack buffer size set to %d",
1887 RtsFlags.ParFlags.packBufferSize));
1891 RtsFlags.ParFlags.doFairScheduling = rtsTrue;
1892 IF_PAR_DEBUG(verbose,
1893 belch("-qR: fair-ish scheduling"));
1898 if (rts_argv[arg][3] != '\0') {
1899 RtsFlags.ParFlags.wait
1900 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1902 RtsFlags.ParFlags.wait = 1000;
1904 IF_PAR_DEBUG(verbose,
1905 belch("-qw<n>: length of wait loop after synchr before reduction: %d",
1906 RtsFlags.ParFlags.wait));
1909 case 'D': /* -qD ... all the debugging options */
1910 if (isdigit(rts_argv[arg][3])) {/* Set all debugging options in one */
1911 /* hack warning: interpret the flags as a binary number */
1912 nat n = decode(rts_argv[arg]+3);
1913 set_par_debug_options(n);
1916 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1917 if (rts_argv[arg][3] == par_debug_opts_flags[i])
1920 if (i==MAX_PAR_DEBUG_OPTION+1) {
1921 fprintf(stderr, "Valid GUM debug options are:\n");
1922 help_par_debug_options(MAX_PAR_DEBUG_MASK);
1923 bad_option( rts_argv[arg] );
1924 } else { // flag found; now set it
1925 set_par_debug_options(PAR_DEBUG_MASK(i)); // 2^i
1931 belch("Unknown option -q%c (%d opts in total)",
1932 rts_argv[arg][2], *rts_argc);
1938 Interpret n as a binary number masking Par debug options and set the
1939 correxponding option. See par_debug_opts_strs for explanations of the flags.
1942 set_par_debug_options(nat n) {
1945 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1947 fprintf(stderr, par_debug_opts_strs[i]);
1949 case 0: RtsFlags.ParFlags.Debug.verbose = rtsTrue; break;
1950 case 1: RtsFlags.ParFlags.Debug.bq = rtsTrue; break;
1951 case 2: RtsFlags.ParFlags.Debug.schedule = rtsTrue; break;
1952 case 3: RtsFlags.ParFlags.Debug.free = rtsTrue; break;
1953 case 4: RtsFlags.ParFlags.Debug.resume = rtsTrue; break;
1954 case 5: RtsFlags.ParFlags.Debug.weight = rtsTrue; break;
1955 case 6: RtsFlags.ParFlags.Debug.fetch = rtsTrue; break;
1956 //case 7: RtsFlags.ParFlags.Debug.ack = rtsTrue; break;
1957 case 7: RtsFlags.ParFlags.Debug.fish = rtsTrue; break;
1958 case 8: RtsFlags.ParFlags.Debug.tables = rtsTrue; break;
1959 case 9: RtsFlags.ParFlags.Debug.packet = rtsTrue; break;
1960 case 10: RtsFlags.ParFlags.Debug.pack = rtsTrue; break;
1961 case 11: RtsFlags.ParFlags.Debug.paranoia = rtsTrue; break;
1962 default: barf("set_par_debug_options: only %d debug options expected",
1963 MAX_PAR_DEBUG_OPTION);
1969 Print one line explanation for each of the GranSim debug options specified
1973 help_par_debug_options(nat n) {
1976 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1978 fprintf(stderr, par_debug_opts_strs[i]);
1985 set_debug_options(nat n) {
1988 for (i=0; i<=MAX_DEBUG_OPTION; i++)
1990 fprintf(stderr, debug_opts_strs[i]);
1992 case 0: RtsFlags.DebugFlags.scheduler = rtsTrue; break;
1993 case 1: RtsFlags.DebugFlags.evaluator = rtsTrue; break;
1994 case 2: RtsFlags.DebugFlags.codegen = rtsTrue; break;
1995 case 3: RtsFlags.DebugFlags.weak = rtsTrue; break;
1996 case 4: RtsFlags.DebugFlags.gccafs = rtsTrue; break;
1997 case 5: RtsFlags.DebugFlags.gc = rtsTrue; break;
1998 case 6: RtsFlags.DebugFlags.block_alloc = rtsTrue; break;
1999 case 7: RtsFlags.DebugFlags.sanity = rtsTrue; break;
2000 case 8: RtsFlags.DebugFlags.stable = rtsTrue; break;
2001 case 9: RtsFlags.DebugFlags.prof = rtsTrue; break;
2002 case 10: RtsFlags.DebugFlags.gran = rtsTrue; break;
2003 case 11: RtsFlags.DebugFlags.par = rtsTrue; break;
2004 default: barf("set_debug_options: only %d debug options expected",
2011 help_debug_options(nat n) {
2014 for (i=0; i<=MAX_DEBUG_OPTION; i++)
2016 fprintf(stderr, debug_opts_strs[i]);
2020 //@node Aux fcts, , GranSim specific options
2021 //@subsection Aux fcts
2023 static FILE * /* return NULL on error */
2026 int argc, char *argv[],
2027 int rts_argc, char *rts_argv[],
2028 const char *FILENAME_FMT)
2032 if (strequal(rts_argv[arg]+2, "stderr")) /* use real stderr */
2034 else if (rts_argv[arg][2] != '\0') /* stats file specified */
2035 f = fopen(rts_argv[arg]+2,"w");
2037 char stats_filename[STATS_FILENAME_MAXLEN]; /* default <program>.<ext> */
2038 sprintf(stats_filename, FILENAME_FMT, argv[0]);
2039 f = fopen(stats_filename,"w");
2042 fprintf(stderr, "Can't open stats file %s\n", rts_argv[arg]+2);
2044 /* Write argv and rtsv into start of stats file */
2046 for(count = 0; count < argc; count++)
2047 fprintf(f, "%s ", argv[count]);
2048 fprintf(f, "+RTS ");
2049 for(count = 0; count < rts_argc; count++)
2050 fprintf(f, "%s ", rts_argv[count]);
2058 decode(const char *s)
2069 if (c == 'g' || c == 'G')
2070 m *= 1000*1000*1000; /* UNchecked! */
2071 else if (c == 'm' || c == 'M')
2072 m *= 1000*1000; /* We do not use powers of 2 (1024) */
2073 else if (c == 'k' || c == 'K') /* to avoid possible bad effects on */
2074 m *= 1000; /* a direct-mapped cache. */
2075 else if (c == 'w' || c == 'W')
2082 bad_option(const char *s)
2084 prog_belch("bad RTS option: %s", s);
2085 stg_exit(EXIT_FAILURE);