1 /* -----------------------------------------------------------------------------
2 * $Id: RtsFlags.c,v 1.49 2001/08/14 13:40:09 sewardj 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
24 #include "PosixSource.h"
28 #include "BlockAlloc.h"
29 #include "Itimer.h" /* CS_MIN_MILLISECS */
30 #include "Profiling.h"
32 #if defined(PROFILING)
40 extern struct RTS_FLAGS RtsFlags;
43 * Split argument lists
45 int prog_argc; /* an "int" so as to match normal "argc" */
46 char **prog_argv = NULL;
47 int rts_argc; /* ditto */
48 char *rts_argv[MAX_RTS_ARGS];
50 //@node Constants, Static function decls, Includes
51 //@subsection Constants
54 * constants, used later
59 char *debug_opts_strs[] = {
60 "DEBUG (-D1): scheduler\n",
61 "DEBUG (-D2): evaluator\n",
62 "DEBUG (-D4): codegen\n",
63 "DEBUG (-D8): weak\n",
64 "DEBUG (-D16): gccafs\n",
66 "DEBUG (-D64): block\n",
67 "DEBUG (-D128): sanity\n",
68 "DEBUG (-D256): stable\n",
69 "DEBUG (-D512): prof\n",
70 "DEBUG (-D1024): gran\n",
71 "DEBUG (-D2048): par\n",
72 "DEBUG (-D4096): linker\n"
75 char *debug_opts_prefix[] = {
93 char *gran_debug_opts_strs[] = {
94 "DEBUG (-bDe, -bD1): event_trace; printing event trace.\n",
95 "DEBUG (-bDE, -bD2): event_stats; printing event statistics.\n",
96 "DEBUG (-bDb, -bD4): bq; check blocking queues\n",
97 "DEBUG (-bDG, -bD8): pack; routines for (un-)packing graph structures.\n",
98 "DEBUG (-bDq, -bD16): checkSparkQ; check consistency of the spark queues.\n",
99 "DEBUG (-bDf, -bD32): thunkStealing; print forwarding of fetches.\n",
100 "DEBUG (-bDr, -bD64): randomSteal; stealing sparks/threads from random PEs.\n",
101 "DEBUG (-bDF, -bD128): findWork; searching spark-pools (local & remote), thread queues for work.\n",
102 "DEBUG (-bDu, -bD256): unused; currently unused flag.\n",
103 "DEBUG (-bDS, -bD512): pri; priority sparking or scheduling.\n",
104 "DEBUG (-bD:, -bD1024): checkLight; check GranSim-Light setup.\n",
105 "DEBUG (-bDo, -bD2048): sortedQ; check whether spark/thread queues are sorted.\n",
106 "DEBUG (-bDz, -bD4096): blockOnFetch; check for blocked on fetch.\n",
107 "DEBUG (-bDP, -bD8192): packBuffer; routines handling pack buffer (GranSim internal!).\n",
108 "DEBUG (-bDt, -bD16384): blockOnFetch_sanity; check for TSO asleep on fetch.\n",
111 /* one character codes for the available debug options */
112 char gran_debug_opts_flags[] = {
113 'e', 'E', 'b', 'G', 'q', 'f', 'r', 'F', 'u', 'S', ':', 'o', 'z', 'P', 't'
116 /* prefix strings printed with the debug messages of the corresponding type */
117 char *gran_debug_opts_prefix[] = {
118 "", /* event_trace */
119 "", /* event_stats */
122 "^^", /* checkSparkQ */
123 "==", /* thunkStealing */
124 "^^", /* randomSteal */
128 "::", /* checkLight */
130 "", /* blockOnFetch */
132 "" /* blockOnFetch_sanity */
137 char *par_debug_opts_strs[] = {
138 "DEBUG (-qDv, -qD1): verbose; be generally verbose with parallel related stuff.\n",
139 "DEBUG (-qDq, -qD2): bq; print blocking queues.\n",
140 "DEBUG (-qDs, -qD4): schedule; scheduling of parallel threads.\n",
141 "DEBUG (-qDe, -qD8): free; free messages.\n",
142 "DEBUG (-qDr, -qD16): resume; resume messages.\n",
143 "DEBUG (-qDw, -qD32): weight; print weights and distrib GC stuff.\n",
144 "DEBUG (-qDF, -qD64): fetch; fetch messages.\n",
145 // "DEBUG (-qDa, -qD128): ack; ack messages.\n",
146 "DEBUG (-qDf, -qD128): fish; fish messages.\n",
147 //"DEBUG (-qDo, -qD512): forward; forwarding messages to other PEs.\n",
148 "DEBUG (-qDl, -qD256): tables; print internal LAGA etc tables.\n",
149 "DEBUG (-qDo, -qD512): packet; packets and graph structures when packing.\n",
150 "DEBUG (-qDp, -qD1024): pack; packing and unpacking graphs.\n",
151 "DEBUG (-qDz, -qD2048): paranoia; ridiculously detailed output (excellent for filling a partition).\n"
154 /* one character codes for the available debug options */
155 char par_debug_opts_flags[] = {
156 'v', 'q', 's', 'e', 'r', 'w', 'F', 'f', 'l', 'o', 'p', 'z'
159 /* prefix strings printed with the debug messages of the corresponding type */
160 char *par_debug_opts_prefix[] = {
178 //@node Static function decls, Command-line option parsing routines, Constants
179 //@subsection Static function decls
181 /* -----------------------------------------------------------------------------
182 Static function decls
183 -------------------------------------------------------------------------- */
185 static FILE * /* return NULL on error */
188 int argc, char *argv[],
189 int rts_argc, char *rts_argv[],
190 const char *FILENAME_FMT);
192 static I_ decode(const char *s);
193 static void bad_option(const char *s);
196 static void enable_GranSimLight(void);
197 static void process_gran_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
198 static void set_GranSim_debug_options(nat n);
199 static void help_GranSim_debug_options(nat n);
201 static void process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
202 static void set_par_debug_options(nat n);
203 static void help_par_debug_options(nat n);
206 static void set_debug_options(nat n);
207 static void help_debug_options(nat n);
210 //@node Command-line option parsing routines, GranSim specific options, Static function decls
211 //@subsection Command-line option parsing routines
213 /* -----------------------------------------------------------------------------
214 * Command-line option parsing routines.
215 * ---------------------------------------------------------------------------*/
217 void initRtsFlagsDefaults(void)
219 RtsFlags.GcFlags.statsFile = NULL;
220 RtsFlags.GcFlags.giveStats = NO_GC_STATS;
222 RtsFlags.GcFlags.maxStkSize = (1024 * 1024) / sizeof(W_);
223 RtsFlags.GcFlags.initialStkSize = 1024 / sizeof(W_);
225 RtsFlags.GcFlags.minAllocAreaSize = (256 * 1024) / BLOCK_SIZE;
226 RtsFlags.GcFlags.minOldGenSize = (1024 * 1024) / BLOCK_SIZE;
227 RtsFlags.GcFlags.maxHeapSize = 0; /* off by default */
228 RtsFlags.GcFlags.heapSizeSuggestion = 0; /* none */
229 RtsFlags.GcFlags.pcFreeHeap = 3; /* 3% */
230 RtsFlags.GcFlags.oldGenFactor = 2;
232 /* A hack currently needed for GUM -- HWL */
233 RtsFlags.GcFlags.generations = 1;
234 RtsFlags.GcFlags.steps = 2;
235 RtsFlags.GcFlags.squeezeUpdFrames = rtsFalse;
237 RtsFlags.GcFlags.generations = 2;
238 RtsFlags.GcFlags.steps = 2;
239 RtsFlags.GcFlags.squeezeUpdFrames = rtsTrue;
241 RtsFlags.GcFlags.compact = rtsFalse;
242 RtsFlags.GcFlags.compactThreshold = 30.0;
243 #ifdef RTS_GTK_FRONTPANEL
244 RtsFlags.GcFlags.frontpanel = rtsFalse;
247 #if defined(PROFILING) || defined(PAR)
248 RtsFlags.CcFlags.doCostCentres = 0;
249 #endif /* PROFILING or PAR */
252 RtsFlags.ProfFlags.doHeapProfile = rtsFalse;
253 RtsFlags.ProfFlags.profileFrequency = 20;
254 RtsFlags.ProfFlags.showCCSOnException = rtsFalse;
255 RtsFlags.ProfFlags.modSelector = NULL;
256 RtsFlags.ProfFlags.descrSelector = NULL;
257 RtsFlags.ProfFlags.typeSelector = NULL;
258 RtsFlags.ProfFlags.ccSelector = NULL;
260 RtsFlags.ProfFlags.doHeapProfile = rtsFalse;
263 RtsFlags.ConcFlags.ctxtSwitchTime = CS_MIN_MILLISECS; /* In milliseconds */
266 RtsFlags.ParFlags.nNodes = 1;
270 RtsFlags.ParFlags.ParStats.Full = rtsFalse;
271 RtsFlags.ParFlags.ParStats.Suppressed = rtsFalse;
272 RtsFlags.ParFlags.ParStats.Binary = rtsFalse;
273 RtsFlags.ParFlags.ParStats.Sparks = rtsFalse;
274 RtsFlags.ParFlags.ParStats.Heap = rtsFalse;
275 RtsFlags.ParFlags.ParStats.NewLogfile = rtsFalse;
276 RtsFlags.ParFlags.ParStats.Global = rtsFalse;
278 RtsFlags.ParFlags.outputDisabled = rtsFalse;
280 RtsFlags.ParFlags.doFairScheduling = rtsTrue; /* fair sched by def */
282 RtsFlags.ParFlags.doFairScheduling = rtsFalse; /* unfair sched by def */
284 RtsFlags.ParFlags.packBufferSize = 1024;
285 RtsFlags.ParFlags.thunksToPack = 1; /* 0 ... infinity; */
286 RtsFlags.ParFlags.globalising = 1; /* 0 ... everything */
287 RtsFlags.ParFlags.maxThreads = 1024;
288 RtsFlags.ParFlags.maxFishes = MAX_FISHES;
289 RtsFlags.ParFlags.fishDelay = FISH_DELAY;
292 #if defined(PAR) || defined(SMP)
293 RtsFlags.ParFlags.maxLocalSparks = 4096;
294 #endif /* PAR || SMP */
297 /* ToDo: check defaults for GranSim and GUM */
298 RtsFlags.GcFlags.maxStkSize = (1024 * 1024) / sizeof(W_);
299 RtsFlags.GcFlags.initialStkSize = 1024 / sizeof(W_);
301 RtsFlags.GranFlags.maxThreads = 65536; // refers to mandatory threads
302 RtsFlags.GranFlags.GranSimStats.Full = rtsFalse;
303 RtsFlags.GranFlags.GranSimStats.Suppressed = rtsFalse;
304 RtsFlags.GranFlags.GranSimStats.Binary = rtsFalse;
305 RtsFlags.GranFlags.GranSimStats.Sparks = rtsFalse;
306 RtsFlags.GranFlags.GranSimStats.Heap = rtsFalse;
307 RtsFlags.GranFlags.GranSimStats.NewLogfile = rtsFalse;
308 RtsFlags.GranFlags.GranSimStats.Global = rtsFalse;
310 RtsFlags.GranFlags.packBufferSize = 1024;
311 RtsFlags.GranFlags.packBufferSize_internal = GRANSIM_DEFAULT_PACK_BUFFER_SIZE;
313 RtsFlags.GranFlags.proc = MAX_PROC;
314 RtsFlags.GranFlags.Fishing = rtsFalse;
315 RtsFlags.GranFlags.maxFishes = MAX_FISHES;
316 RtsFlags.GranFlags.time_slice = GRAN_TIME_SLICE;
317 RtsFlags.GranFlags.Light = rtsFalse;
319 RtsFlags.GranFlags.Costs.latency = LATENCY;
320 RtsFlags.GranFlags.Costs.additional_latency = ADDITIONAL_LATENCY;
321 RtsFlags.GranFlags.Costs.fetchtime = FETCHTIME;
322 RtsFlags.GranFlags.Costs.lunblocktime = LOCALUNBLOCKTIME;
323 RtsFlags.GranFlags.Costs.gunblocktime = GLOBALUNBLOCKTIME;
324 RtsFlags.GranFlags.Costs.mpacktime = MSGPACKTIME;
325 RtsFlags.GranFlags.Costs.munpacktime = MSGUNPACKTIME;
326 RtsFlags.GranFlags.Costs.mtidytime = MSGTIDYTIME;
328 RtsFlags.GranFlags.Costs.threadcreatetime = THREADCREATETIME;
329 RtsFlags.GranFlags.Costs.threadqueuetime = THREADQUEUETIME;
330 RtsFlags.GranFlags.Costs.threaddescheduletime = THREADDESCHEDULETIME;
331 RtsFlags.GranFlags.Costs.threadscheduletime = THREADSCHEDULETIME;
332 RtsFlags.GranFlags.Costs.threadcontextswitchtime = THREADCONTEXTSWITCHTIME;
334 RtsFlags.GranFlags.Costs.arith_cost = ARITH_COST;
335 RtsFlags.GranFlags.Costs.branch_cost = BRANCH_COST;
336 RtsFlags.GranFlags.Costs.load_cost = LOAD_COST;
337 RtsFlags.GranFlags.Costs.store_cost = STORE_COST;
338 RtsFlags.GranFlags.Costs.float_cost = FLOAT_COST;
340 RtsFlags.GranFlags.Costs.heapalloc_cost = HEAPALLOC_COST;
342 RtsFlags.GranFlags.Costs.pri_spark_overhead = PRI_SPARK_OVERHEAD;
343 RtsFlags.GranFlags.Costs.pri_sched_overhead = PRI_SCHED_OVERHEAD;
345 RtsFlags.GranFlags.DoFairSchedule = rtsFalse;
346 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
347 RtsFlags.GranFlags.DoStealThreadsFirst = rtsFalse;
348 RtsFlags.GranFlags.DoAlwaysCreateThreads = rtsFalse;
349 RtsFlags.GranFlags.DoBulkFetching = rtsFalse;
350 RtsFlags.GranFlags.DoThreadMigration = rtsFalse;
351 RtsFlags.GranFlags.FetchStrategy = 2;
352 RtsFlags.GranFlags.PreferSparksOfLocalNodes = rtsFalse;
353 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
354 RtsFlags.GranFlags.DoPriorityScheduling = rtsFalse;
355 RtsFlags.GranFlags.SparkPriority = 0;
356 RtsFlags.GranFlags.SparkPriority2 = 0;
357 RtsFlags.GranFlags.RandomPriorities = rtsFalse;
358 RtsFlags.GranFlags.InversePriorities = rtsFalse;
359 RtsFlags.GranFlags.IgnorePriorities = rtsFalse;
360 RtsFlags.GranFlags.ThunksToPack = 0;
361 RtsFlags.GranFlags.RandomSteal = rtsTrue;
365 RtsFlags.TickyFlags.showTickyStats = rtsFalse;
366 RtsFlags.TickyFlags.tickyFile = NULL;
373 "Usage: <prog> <args> [+RTS <rtsopts> | -RTS <args>] ... --RTS <args>",
375 " +RTS Indicates run time system options follow",
376 " -RTS Indicates program arguments follow",
377 " --RTS Indicates that ALL subsequent arguments will be given to the",
378 " program (including any of these RTS flags)",
380 "The following run time system options are available:",
382 " -? Prints this message and exits; the program is not executed",
384 " -K<size> Sets the maximum stack size (default 1M) Egs: -K32k -K512k",
385 " -k<size> Sets the initial thread stack size (default 1k) Egs: -K4k -K2m",
387 " -A<size> Sets the minimum allocation area size (default 256k) Egs: -A1m -A10k",
388 " -M<size> Sets the maximum heap size (default unlimited) Egs: -M256k -M1G",
389 " -H<size> Sets the minimum heap size (default 0M) Egs: -H24m -H1G",
390 " -m<n> Minimum % of heap which must be available (default 3%)",
391 " -G<n> Number of generations (default: 2)",
392 " -T<n> Number of steps in younger generations (default: 2)",
393 " -c<n> Auto-enable compaction of the oldest generation when live data is",
394 " at least <n>% of the maximum heap size set with -M (default: 30%)",
395 " -c Enable compaction for all major collections",
397 " -t<file> One-line GC statistics (default file: <program>.stat)",
398 " -s<file> Summary GC statistics (with -Sstderr going to stderr)",
399 " -S<file> Detailed GC statistics",
400 #ifdef RTS_GTK_FRONTPANEL
401 " -f Display front panel (requires X11 & GTK+)",
405 " -Z Don't squeeze out update frames on stack overflow",
406 " -B Sound the bell at the start of each garbage collection",
407 #if defined(PROFILING) || defined(PAR)
409 " -px Time/allocation profile (XML) (output file <program>.prof)",
410 " -p Time/allocation profile (output file <program>.prof)",
411 " -P More detailed Time/Allocation profile",
412 " -Pa Give information about *all* cost centres",
414 # if defined(PROFILING)
416 " -hx Heap residency profile (XML) (output file <program>.prof)",
417 " -h<break-down> Heap residency profile (text) (output file <program>.prof)",
418 " break-down: C = cost centre stack (default), M = module",
419 " D = closure description, Y = type description",
420 " A subset of closures may be selected thusly:",
421 " -hc{cc, cc ...} specific cost centre(s) (NOT STACKS!)",
422 " -hm{mod,mod...} all cost centres from the specified modules(s)",
423 " -hd{des,des...} closures with specified closure descriptions",
424 " -hy{typ,typ...} closures with specified type descriptions",
426 " -i<msec> Time between heap samples (msec, default: 20)",
428 " -xc Show current cost centre stack on raising an exception",
430 #endif /* PROFILING or PAR */
431 #if !defined(PROFILING) && defined(DEBUG)
433 " -h<break-down> Debugging Heap residency profile",
434 " (output file <program>.hp)",
435 " break-down: L = closure label (default)",
436 " T = closure type (constructor, thunk etc.)",
439 #if defined(TICKY_TICKY)
440 " -r<file> Produce reduction profiling statistics (with -rstderr for stderr)",
444 " -N<n> Use <n> PVMish processors in parallel (default: 2)",
445 /* NB: the -N<n> is implemented by the driver!! */
447 " -C<secs> Context-switch interval in seconds",
448 " (0 or no argument means switch as often as possible)",
449 " the default is .02 sec; resolution is .02 sec",
451 " -N<n> Use <n> OS threads (default: 1)",
453 #if defined(SMP) || defined(PAR)
454 " -e<size> Size of spark pools (default 100)",
457 " -t<num> Set maximum number of advisory threads per PE (default 32)",
458 " -qP Enable activity profile (output files in ~/<program>*.gr)",
459 " -qQ<size> Set pack-buffer size (default: 1024)",
460 " -qd Turn on PVM-ish debugging",
461 " -qO Disable output for performance measurement",
463 #if defined(SMP) || defined(PAR)
464 " -e<n> Maximum number of outstanding local sparks (default: 4096)",
467 " -d Turn on PVM-ish debugging",
468 " -O Disable output for performance measurement",
470 #if defined(GRAN) /* ToDo: fill in decent Docu here */
471 " -b... All GranSim options start with -b; see GranSim User's Guide for details",
474 "RTS options may also be specified using the GHCRTS environment variable.",
476 "Other RTS options may be available for programs compiled a different way.",
477 "The GHC User's Guide has full details.",
482 static __inline__ rtsBool
483 strequal(const char *a, const char * b)
485 return(strcmp(a, b) == 0);
489 setupRtsFlags(int *argc, char *argv[], int *rts_argc, char *rts_argv[])
491 rtsBool error = rtsFalse;
496 /* Remove directory from argv[0] -- default files in current directory */
498 if ((last_slash = (char *) strrchr(argv[0], '/')) != NULL)
499 strcpy(argv[0], last_slash+1);
507 // process arguments from the GHCRTS environment variable first
508 // (arguments from the command line override these).
510 char *ghc_rts = getenv("GHCRTS");
513 if (ghc_rts != NULL) {
516 while (isspace(*c1)) { c1++; };
518 while (!isspace(*c2) && *c2 != '\0') { c2++; };
520 if (c1 == c2) { break; }
522 if (*rts_argc < MAX_RTS_ARGS-1) {
524 strncpy(s, c1, c2-c1);
526 rts_argv[(*rts_argc)++] = s;
528 barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
532 } while (*c1 != '\0');
536 // Split arguments (argv) into PGM (argv) and RTS (rts_argv) parts
537 // argv[0] must be PGM argument -- leave in argv
539 for (mode = PGM; arg < total_arg; arg++) {
540 // The '--RTS' argument disables all future +RTS ... -RTS processing.
541 if (strequal("--RTS", argv[arg])) {
545 // The '--' argument is passed through to the program, but
546 // disables all further +RTS ... -RTS processing.
547 else if (strequal("--", argv[arg])) {
550 else if (strequal("+RTS", argv[arg])) {
553 else if (strequal("-RTS", argv[arg])) {
556 else if (mode == RTS && *rts_argc < MAX_RTS_ARGS-1) {
557 rts_argv[(*rts_argc)++] = argv[arg];
559 else if (mode == PGM) {
560 argv[(*argc)++] = argv[arg];
563 barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
566 // process remaining program arguments
567 for (; arg < total_arg; arg++) {
568 argv[(*argc)++] = argv[arg];
570 argv[*argc] = (char *) 0;
571 rts_argv[*rts_argc] = (char *) 0;
573 // Process RTS (rts_argv) part: mainly to determine statsfile
574 for (arg = 0; arg < *rts_argc; arg++) {
575 if (rts_argv[arg][0] != '-') {
577 prog_belch("unexpected RTS argument: %s", rts_argv[arg]);
581 switch(rts_argv[arg][1]) {
583 /* process: general args, then PROFILING-only ones,
584 then CONCURRENT-only, PARallel-only, GRAN-only,
585 TICKY-only (same order as defined in RtsFlags.lh);
586 within those groups, mostly in case-insensitive
588 Final group is x*, which allows for more options.
592 # define TICKY_BUILD_ONLY(x) x
594 # define TICKY_BUILD_ONLY(x) \
595 prog_belch("GHC not built for: ticky-ticky stats"); \
599 #if defined(PROFILING)
600 # define COST_CENTRE_USING_BUILD_ONLY(x) x
602 # define COST_CENTRE_USING_BUILD_ONLY(x) \
603 prog_belch("GHC not built for: -prof or -parallel"); \
608 # define PROFILING_BUILD_ONLY(x) x
610 # define PROFILING_BUILD_ONLY(x) \
611 prog_belch("GHC not built for: -prof"); \
616 # define SMP_BUILD_ONLY(x) x
618 # define SMP_BUILD_ONLY(x) \
619 prog_belch("GHC not built for: -smp"); \
624 # define PAR_BUILD_ONLY(x) x
626 # define PAR_BUILD_ONLY(x) \
627 prog_belch("GHC not built for: -parallel"); \
631 #if defined(SMP) || defined(PAR)
632 # define PAR_OR_SMP_BUILD_ONLY(x) x
634 # define PAR_OR_SMP_BUILD_ONLY(x) \
635 prog_belch("GHC not built for: -parallel or -smp"); \
640 # define GRAN_BUILD_ONLY(x) x
642 # define GRAN_BUILD_ONLY(x) \
643 prog_belch("GHC not built for: -gransim"); \
647 /* =========== GENERAL ========================== */
653 RtsFlags.GcFlags.minAllocAreaSize
654 = decode(rts_argv[arg]+2) / BLOCK_SIZE;
655 if (RtsFlags.GcFlags.minAllocAreaSize <= 0) {
656 bad_option(rts_argv[arg]);
661 RtsFlags.GcFlags.ringBell = rtsTrue;
665 if (rts_argv[arg][2] != '\0') {
666 RtsFlags.GcFlags.compactThreshold =
667 atof(rts_argv[arg]+2);
669 RtsFlags.GcFlags.compact = rtsTrue;
674 RtsFlags.GcFlags.oldGenFactor = atof(rts_argv[arg]+2);
676 if (RtsFlags.GcFlags.oldGenFactor < 0)
677 bad_option( rts_argv[arg] );
682 if (isdigit(rts_argv[arg][2])) {/* Set all debugging options in one */
683 /* hack warning: interpret the flags as a binary number */
684 nat n = decode(rts_argv[arg]+2);
685 set_debug_options(n);
691 RtsFlags.GcFlags.maxStkSize =
692 decode(rts_argv[arg]+2) / sizeof(W_);
694 if (RtsFlags.GcFlags.maxStkSize == 0)
695 bad_option( rts_argv[arg] );
699 RtsFlags.GcFlags.initialStkSize =
700 decode(rts_argv[arg]+2) / sizeof(W_);
702 if (RtsFlags.GcFlags.initialStkSize == 0)
703 bad_option( rts_argv[arg] );
707 RtsFlags.GcFlags.maxHeapSize =
708 decode(rts_argv[arg]+2) / BLOCK_SIZE;
709 /* user give size in *bytes* but "maxHeapSize" is in *blocks* */
711 if (RtsFlags.GcFlags.maxHeapSize <= 0) {
712 bad_option(rts_argv[arg]);
717 RtsFlags.GcFlags.pcFreeHeap = atof(rts_argv[arg]+2);
719 if (RtsFlags.GcFlags.pcFreeHeap < 0 ||
720 RtsFlags.GcFlags.pcFreeHeap > 100)
721 bad_option( rts_argv[arg] );
725 RtsFlags.GcFlags.generations = decode(rts_argv[arg]+2);
726 if (RtsFlags.GcFlags.generations < 1) {
727 bad_option(rts_argv[arg]);
732 RtsFlags.GcFlags.steps = decode(rts_argv[arg]+2);
733 if (RtsFlags.GcFlags.steps < 1) {
734 bad_option(rts_argv[arg]);
739 RtsFlags.GcFlags.heapSizeSuggestion =
740 decode(rts_argv[arg]+2) / BLOCK_SIZE;
742 if (RtsFlags.GcFlags.heapSizeSuggestion <= 0) {
743 bad_option(rts_argv[arg]);
747 #ifdef RTS_GTK_FRONTPANEL
749 RtsFlags.GcFlags.frontpanel = rtsTrue;
754 RtsFlags.GcFlags.giveStats = VERBOSE_GC_STATS;
758 RtsFlags.GcFlags.giveStats = SUMMARY_GC_STATS;
762 RtsFlags.GcFlags.giveStats = ONELINE_GC_STATS;
767 /* Opening all those files would almost certainly fail... */
768 // RtsFlags.ParFlags.ParStats.Full = rtsTrue;
769 RtsFlags.GcFlags.statsFile = stderr; /* temporary; ToDo: rm */
771 RtsFlags.GcFlags.statsFile
772 = open_stats_file(arg, *argc, argv,
773 *rts_argc, rts_argv, STAT_FILENAME_FMT);
775 if (RtsFlags.GcFlags.statsFile == NULL) error = rtsTrue;
780 RtsFlags.GcFlags.squeezeUpdFrames = rtsFalse;
783 /* =========== PROFILING ========================== */
785 case 'P': /* detailed cost centre profiling (time/alloc) */
786 case 'p': /* cost centre profiling (time/alloc) */
787 COST_CENTRE_USING_BUILD_ONLY(
788 switch (rts_argv[arg][2]) {
790 RtsFlags.CcFlags.doCostCentres = COST_CENTRES_XML;
793 RtsFlags.CcFlags.doCostCentres = COST_CENTRES_ALL;
796 if (rts_argv[arg][1] == 'P') {
797 RtsFlags.CcFlags.doCostCentres =
798 COST_CENTRES_VERBOSE;
800 RtsFlags.CcFlags.doCostCentres =
801 COST_CENTRES_SUMMARY;
807 case 'h': /* serial heap profile */
808 #if !defined(PROFILING) && defined(DEBUG)
809 switch (rts_argv[arg][2]) {
812 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_INFOPTR;
815 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE;
818 prog_belch("invalid heap profile option: %s",rts_argv[arg]);
822 PROFILING_BUILD_ONLY(
823 switch (rts_argv[arg][2]) {
826 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CCS;
829 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_MOD;
832 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_DESCR;
835 RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_TYPE;
837 case 'c': /* cost centre label select */
838 case 'm': /* cost centre module select */
839 case 'd': /* closure descr select */
840 case 'y': /* closure type select */
841 {char *left = strchr(rts_argv[arg], '{');
842 char *right = strrchr(rts_argv[arg], '}');
843 if (! left || ! right ||
844 strrchr(rts_argv[arg], '{') != left ||
845 strchr(rts_argv[arg], '}') != right) {
847 "Invalid heap profiling selection bracketing\n %s\n",
852 switch (rts_argv[arg][2]) {
853 case 'c': /* cost centre label select */
854 RtsFlags.ProfFlags.ccSelector = left + 1;
856 case 'm': /* cost centre module select */
857 RtsFlags.ProfFlags.modSelector = left + 1;
859 case 'd': /* closure descr select */
860 RtsFlags.ProfFlags.descrSelector = left + 1;
862 case 'y': /* closure type select */
863 RtsFlags.ProfFlags.typeSelector = left + 1;
870 prog_belch("invalid heap profile option: %s",rts_argv[arg]);
878 #if defined(PROFILING)
879 case 'i': /* heap sample interval */
880 if (rts_argv[arg][2] == '\0') {
885 /* Convert to milliseconds */
886 cst = (I_) ((atof(rts_argv[arg]+2) * 1000));
887 cst = (cst / CS_MIN_MILLISECS) * CS_MIN_MILLISECS;
888 if (cst != 0 && cst < CS_MIN_MILLISECS)
889 cst = CS_MIN_MILLISECS;
891 RtsFlags.ProfFlags.profileFrequency = cst;
898 /* =========== CONCURRENT ========================= */
899 case 'C': /* context switch interval */
900 if (rts_argv[arg][2] == '\0')
901 RtsFlags.ConcFlags.ctxtSwitchTime = 0;
905 /* Convert to milliseconds */
906 cst = (I_) ((atof(rts_argv[arg]+2) * 1000));
907 cst = (cst / CS_MIN_MILLISECS) * CS_MIN_MILLISECS;
908 if (cst != 0 && cst < CS_MIN_MILLISECS)
909 cst = CS_MIN_MILLISECS;
911 RtsFlags.ConcFlags.ctxtSwitchTime = cst;
918 if (rts_argv[arg][2] != '\0') {
919 RtsFlags.ParFlags.nNodes
920 = strtol(rts_argv[arg]+2, (char **) NULL, 10);
921 if (RtsFlags.ParFlags.nNodes <= 0) {
922 prog_belch("bad value for -N");
928 /* =========== PARALLEL =========================== */
930 PAR_OR_SMP_BUILD_ONLY(
931 if (rts_argv[arg][2] != '\0') {
932 RtsFlags.ParFlags.maxLocalSparks
933 = strtol(rts_argv[arg]+2, (char **) NULL, 10);
934 if (RtsFlags.ParFlags.maxLocalSparks <= 0) {
935 prog_belch("bad value for -e");
943 process_par_option(arg, rts_argc, rts_argv, &error);
946 /* =========== GRAN =============================== */
950 process_gran_option(arg, rts_argc, rts_argv, &error);
953 /* =========== TICKY ============================== */
955 case 'r': /* Basic profiling stats */
958 RtsFlags.TickyFlags.showTickyStats = rtsTrue;
959 RtsFlags.TickyFlags.tickyFile
960 = open_stats_file(arg, *argc, argv,
961 *rts_argc, rts_argv, TICKY_FILENAME_FMT);
963 if (RtsFlags.TickyFlags.tickyFile == NULL) error = rtsTrue;
966 /* =========== EXTENDED OPTIONS =================== */
968 case 'x': /* Extend the argument space */
969 switch(rts_argv[arg][2]) {
971 prog_belch("incomplete RTS option: %s",rts_argv[arg]);
975 case 'c': /* Debugging tool: show current cost centre on an exception */
976 PROFILING_BUILD_ONLY(
977 RtsFlags.ProfFlags.showCCSOnException = rtsTrue;
980 /* The option prefix '-xx' is reserved for future extension. KSW 1999-11. */
983 prog_belch("unknown RTS option: %s",rts_argv[arg]);
987 break; /* defensive programming */
989 /* =========== OH DEAR ============================ */
991 prog_belch("unknown RTS option: %s",rts_argv[arg]);
1001 for (p = usage_text; *p; p++)
1003 stg_exit(EXIT_FAILURE);
1009 //@node GranSim specific options, Aux fcts, Command-line option parsing routines
1010 //@subsection GranSim specific options
1013 enable_GranSimLight(void) {
1015 fprintf(stderr,"GrAnSim Light enabled (infinite number of processors; 0 communication costs)\n");
1016 RtsFlags.GranFlags.Light=rtsTrue;
1017 RtsFlags.GranFlags.Costs.latency =
1018 RtsFlags.GranFlags.Costs.fetchtime =
1019 RtsFlags.GranFlags.Costs.additional_latency =
1020 RtsFlags.GranFlags.Costs.gunblocktime =
1021 RtsFlags.GranFlags.Costs.lunblocktime =
1022 RtsFlags.GranFlags.Costs.threadcreatetime =
1023 RtsFlags.GranFlags.Costs.threadqueuetime =
1024 RtsFlags.GranFlags.Costs.threadscheduletime =
1025 RtsFlags.GranFlags.Costs.threaddescheduletime =
1026 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1028 RtsFlags.GranFlags.Costs.mpacktime =
1029 RtsFlags.GranFlags.Costs.munpacktime = 0;
1031 RtsFlags.GranFlags.DoFairSchedule = rtsTrue;
1032 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
1033 RtsFlags.GranFlags.DoAlwaysCreateThreads = rtsTrue;
1034 /* FetchStrategy is irrelevant in GrAnSim-Light */
1036 /* GrAnSim Light often creates an abundance of parallel threads,
1037 each with its own stack etc. Therefore, it's in general a good
1038 idea to use small stack chunks (use the -o<size> option to
1041 // RtsFlags.ConcFlags.stkChunkSize = 100;
1043 RtsFlags.GranFlags.proc = 1;
1047 process_gran_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error)
1049 if (rts_argv[arg][1] != 'b') /* All GranSim options start with -b */
1052 /* or a ridiculously idealised simulator */
1053 if(strcmp((rts_argv[arg]+2),"oring")==0) {
1054 RtsFlags.GranFlags.Costs.latency =
1055 RtsFlags.GranFlags.Costs.fetchtime =
1056 RtsFlags.GranFlags.Costs.additional_latency =
1057 RtsFlags.GranFlags.Costs.gunblocktime =
1058 RtsFlags.GranFlags.Costs.lunblocktime =
1059 RtsFlags.GranFlags.Costs.threadcreatetime =
1060 RtsFlags.GranFlags.Costs.threadqueuetime =
1061 RtsFlags.GranFlags.Costs.threadscheduletime =
1062 RtsFlags.GranFlags.Costs.threaddescheduletime =
1063 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1065 RtsFlags.GranFlags.Costs.mpacktime =
1066 RtsFlags.GranFlags.Costs.munpacktime = 0;
1068 RtsFlags.GranFlags.Costs.arith_cost =
1069 RtsFlags.GranFlags.Costs.float_cost =
1070 RtsFlags.GranFlags.Costs.load_cost =
1071 RtsFlags.GranFlags.Costs.store_cost =
1072 RtsFlags.GranFlags.Costs.branch_cost = 0;
1074 RtsFlags.GranFlags.Costs.heapalloc_cost = 1;
1076 /* ++RtsFlags.GranFlags.DoFairSchedule; */
1077 RtsFlags.GranFlags.DoStealThreadsFirst = rtsTrue; /* -bZ */
1078 RtsFlags.GranFlags.DoThreadMigration = rtsTrue; /* -bM */
1079 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue; /* -bP */
1083 /* or a somewhat idealised simulator */
1084 if(strcmp((rts_argv[arg]+2),"onzo")==0) {
1085 RtsFlags.GranFlags.Costs.latency =
1086 RtsFlags.GranFlags.Costs.fetchtime =
1087 RtsFlags.GranFlags.Costs.additional_latency =
1088 RtsFlags.GranFlags.Costs.gunblocktime =
1089 RtsFlags.GranFlags.Costs.lunblocktime =
1090 RtsFlags.GranFlags.Costs.threadcreatetime =
1091 RtsFlags.GranFlags.Costs.threadqueuetime =
1092 RtsFlags.GranFlags.Costs.threadscheduletime =
1093 RtsFlags.GranFlags.Costs.threaddescheduletime =
1094 RtsFlags.GranFlags.Costs.threadcontextswitchtime = 0;
1096 RtsFlags.GranFlags.Costs.mpacktime =
1097 RtsFlags.GranFlags.Costs.munpacktime = 0;
1099 RtsFlags.GranFlags.Costs.heapalloc_cost = 1;
1101 /* RtsFlags.GranFlags.DoFairSchedule = rtsTrue; */ /* -b-R */
1102 /* RtsFlags.GranFlags.DoStealThreadsFirst = rtsTrue; */ /* -b-T */
1103 RtsFlags.GranFlags.DoAsyncFetch = rtsTrue; /* -bZ */
1104 RtsFlags.GranFlags.DoThreadMigration = rtsTrue; /* -bM */
1105 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue; /* -bP */
1106 # if defined(GRAN_CHECK) && defined(GRAN)
1107 RtsFlags.GranFlags.Debug.event_stats = rtsTrue; /* print event statistics */
1112 /* Communication and task creation cost parameters */
1113 switch(rts_argv[arg][2]) {
1115 IgnoreYields = rtsTrue; // HWL HACK
1119 enable_GranSimLight(); /* set flags for GrAnSim-Light mode */
1123 if (rts_argv[arg][3] != '\0')
1125 RtsFlags.GranFlags.Costs.gunblocktime =
1126 RtsFlags.GranFlags.Costs.latency = decode(rts_argv[arg]+3);
1127 RtsFlags.GranFlags.Costs.fetchtime = 2*RtsFlags.GranFlags.Costs.latency;
1130 RtsFlags.GranFlags.Costs.latency = LATENCY;
1134 if (rts_argv[arg][3] != '\0')
1135 RtsFlags.GranFlags.Costs.additional_latency = decode(rts_argv[arg]+3);
1137 RtsFlags.GranFlags.Costs.additional_latency = ADDITIONAL_LATENCY;
1141 if (rts_argv[arg][3] != '\0')
1142 RtsFlags.GranFlags.Costs.mpacktime = decode(rts_argv[arg]+3);
1144 RtsFlags.GranFlags.Costs.mpacktime = MSGPACKTIME;
1148 if (rts_argv[arg][3] != '\0')
1149 RtsFlags.GranFlags.Costs.mtidytime = decode(rts_argv[arg]+3);
1151 RtsFlags.GranFlags.Costs.mtidytime = 0;
1155 if (rts_argv[arg][3] != '\0')
1156 RtsFlags.GranFlags.Costs.munpacktime = decode(rts_argv[arg]+3);
1158 RtsFlags.GranFlags.Costs.munpacktime = MSGUNPACKTIME;
1162 if (rts_argv[arg][3] != '\0')
1163 RtsFlags.GranFlags.Costs.fetchtime = decode(rts_argv[arg]+3);
1165 RtsFlags.GranFlags.Costs.fetchtime = FETCHTIME;
1169 if (rts_argv[arg][3] != '\0')
1170 RtsFlags.GranFlags.Costs.gunblocktime = decode(rts_argv[arg]+3);
1172 RtsFlags.GranFlags.Costs.gunblocktime = GLOBALUNBLOCKTIME;
1176 if (rts_argv[arg][3] != '\0')
1177 RtsFlags.GranFlags.Costs.lunblocktime = decode(rts_argv[arg]+3);
1179 RtsFlags.GranFlags.Costs.lunblocktime = LOCALUNBLOCKTIME;
1182 /* Thread-related metrics */
1184 if (rts_argv[arg][3] != '\0')
1185 RtsFlags.GranFlags.Costs.threadcreatetime = decode(rts_argv[arg]+3);
1187 RtsFlags.GranFlags.Costs.threadcreatetime = THREADCREATETIME;
1191 if (rts_argv[arg][3] != '\0')
1192 RtsFlags.GranFlags.Costs.threadqueuetime = decode(rts_argv[arg]+3);
1194 RtsFlags.GranFlags.Costs.threadqueuetime = THREADQUEUETIME;
1198 if (rts_argv[arg][3] != '\0')
1199 RtsFlags.GranFlags.Costs.threadscheduletime = decode(rts_argv[arg]+3);
1201 RtsFlags.GranFlags.Costs.threadscheduletime = THREADSCHEDULETIME;
1203 RtsFlags.GranFlags.Costs.threadcontextswitchtime = RtsFlags.GranFlags.Costs.threadscheduletime
1204 + RtsFlags.GranFlags.Costs.threaddescheduletime;
1208 if (rts_argv[arg][3] != '\0')
1209 RtsFlags.GranFlags.Costs.threaddescheduletime = decode(rts_argv[arg]+3);
1211 RtsFlags.GranFlags.Costs.threaddescheduletime = THREADDESCHEDULETIME;
1213 RtsFlags.GranFlags.Costs.threadcontextswitchtime = RtsFlags.GranFlags.Costs.threadscheduletime
1214 + RtsFlags.GranFlags.Costs.threaddescheduletime;
1217 /* Instruction Cost Metrics */
1219 if (rts_argv[arg][3] != '\0')
1220 RtsFlags.GranFlags.Costs.arith_cost = decode(rts_argv[arg]+3);
1222 RtsFlags.GranFlags.Costs.arith_cost = ARITH_COST;
1226 if (rts_argv[arg][3] != '\0')
1227 RtsFlags.GranFlags.Costs.float_cost = decode(rts_argv[arg]+3);
1229 RtsFlags.GranFlags.Costs.float_cost = FLOAT_COST;
1233 if (rts_argv[arg][3] != '\0')
1234 RtsFlags.GranFlags.Costs.branch_cost = decode(rts_argv[arg]+3);
1236 RtsFlags.GranFlags.Costs.branch_cost = BRANCH_COST;
1240 if (rts_argv[arg][3] != '\0')
1241 RtsFlags.GranFlags.Costs.load_cost = decode(rts_argv[arg]+3);
1243 RtsFlags.GranFlags.Costs.load_cost = LOAD_COST;
1247 if (rts_argv[arg][3] != '\0')
1248 RtsFlags.GranFlags.Costs.store_cost = decode(rts_argv[arg]+3);
1250 RtsFlags.GranFlags.Costs.store_cost = STORE_COST;
1254 if (rts_argv[arg][3] != '\0')
1255 RtsFlags.GranFlags.Costs.heapalloc_cost = decode(rts_argv[arg]+3);
1257 RtsFlags.GranFlags.Costs.heapalloc_cost = 0;
1261 RtsFlags.GranFlags.DoAsyncFetch = rtsTrue;
1262 if (rts_argv[arg][3] != '\0')
1263 RtsFlags.GranFlags.FetchStrategy = decode(rts_argv[arg]+3);
1265 RtsFlags.GranFlags.FetchStrategy = 2;
1266 if (RtsFlags.GranFlags.FetchStrategy == 0)
1267 RtsFlags.GranFlags.DoAsyncFetch = rtsFalse;
1270 case 'K': /* sort overhead (per elem in spark list) */
1271 if (rts_argv[arg][3] != '\0')
1272 RtsFlags.GranFlags.Costs.pri_spark_overhead = decode(rts_argv[arg]+3);
1274 RtsFlags.GranFlags.Costs.pri_spark_overhead = PRI_SPARK_OVERHEAD;
1275 fprintf(stderr,"Overhead for pri spark: %d (per elem).\n",
1276 RtsFlags.GranFlags.Costs.pri_spark_overhead);
1279 case 'O': /* sort overhead (per elem in spark list) */
1280 if (rts_argv[arg][3] != '\0')
1281 RtsFlags.GranFlags.Costs.pri_sched_overhead = decode(rts_argv[arg]+3);
1283 RtsFlags.GranFlags.Costs.pri_sched_overhead = PRI_SCHED_OVERHEAD;
1284 fprintf(stderr,"Overhead for pri sched: %d (per elem).\n",
1285 RtsFlags.GranFlags.Costs.pri_sched_overhead);
1288 /* General Parameters */
1290 if (rts_argv[arg][3] != '\0')
1292 RtsFlags.GranFlags.proc = decode(rts_argv[arg]+3);
1293 if (RtsFlags.GranFlags.proc==0) {
1294 enable_GranSimLight(); /* set flags for GrAnSim-Light mode */
1295 } else if (RtsFlags.GranFlags.proc > MAX_PROC ||
1296 RtsFlags.GranFlags.proc < 1)
1298 fprintf(stderr,"setupRtsFlags: no more than %u processors
1305 RtsFlags.GranFlags.proc = MAX_PROC;
1309 RtsFlags.GranFlags.Fishing = rtsTrue;
1310 if (rts_argv[arg][3] != '\0')
1311 RtsFlags.GranFlags.maxFishes = decode(rts_argv[arg]+3);
1313 RtsFlags.GranFlags.maxFishes = MAX_FISHES;
1317 if (rts_argv[arg][3] != '\0')
1318 RtsFlags.GranFlags.time_slice = decode(rts_argv[arg]+3);
1320 RtsFlags.GranFlags.time_slice = GRAN_TIME_SLICE;
1324 RtsFlags.GranFlags.DoAlwaysCreateThreads=rtsTrue;
1325 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1329 fprintf(stderr,"Bulk fetching enabled.\n");
1330 RtsFlags.GranFlags.DoBulkFetching=rtsTrue;
1334 fprintf(stderr,"Thread migration enabled.\n");
1335 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1339 fprintf(stderr,"Fair Scheduling enabled.\n");
1340 RtsFlags.GranFlags.DoFairSchedule=rtsTrue;
1344 fprintf(stderr,"Priority Scheduling enabled.\n");
1345 RtsFlags.GranFlags.DoPriorityScheduling=rtsTrue;
1349 RtsFlags.GranFlags.DoStealThreadsFirst=rtsTrue;
1350 RtsFlags.GranFlags.DoThreadMigration=rtsTrue;
1354 RtsFlags.GranFlags.DoAsyncFetch=rtsTrue;
1358 /* RtsFlags.GranFlags.SimplifiedFetch=rtsTrue; */
1362 RtsFlags.GranFlags.PreferSparksOfLocalNodes=rtsTrue;
1366 RtsFlags.GranFlags.GranSimStats.Binary=rtsTrue;
1370 /* format is -bP<c> where <c> is one char describing kind of profile */
1371 RtsFlags.GranFlags.GranSimStats.Full = rtsTrue;
1372 switch(rts_argv[arg][3]) {
1373 case '\0': break; // nothing special, just an ordinary profile
1374 case '0': RtsFlags.GranFlags.GranSimStats.Suppressed = rtsTrue;
1376 case 'b': RtsFlags.GranFlags.GranSimStats.Binary = rtsTrue;
1378 case 's': RtsFlags.GranFlags.GranSimStats.Sparks = rtsTrue;
1380 case 'h': RtsFlags.GranFlags.GranSimStats.Heap = rtsTrue;
1382 case 'n': RtsFlags.GranFlags.GranSimStats.NewLogfile = rtsTrue;
1384 case 'g': RtsFlags.GranFlags.GranSimStats.Global = rtsTrue;
1386 default: barf("Unknown option -bP%c", rts_argv[arg][3]);
1391 RtsFlags.GranFlags.GranSimStats.Sparks=rtsTrue;
1395 RtsFlags.GranFlags.GranSimStats.Heap=rtsTrue;
1398 case 'Y': /* syntax: -bY<n>[,<n>] n ... pos int */
1399 if (rts_argv[arg][3] != '\0') {
1402 arg0 = rts_argv[arg]+3;
1403 if ((tmp = strstr(arg0,","))==NULL) {
1404 RtsFlags.GranFlags.SparkPriority = decode(arg0);
1405 fprintf(stderr,"SparkPriority: %u.\n",RtsFlags.GranFlags.SparkPriority);
1408 RtsFlags.GranFlags.SparkPriority = decode(arg0);
1409 RtsFlags.GranFlags.SparkPriority2 = decode(tmp);
1410 fprintf(stderr,"SparkPriority: %u.\n",
1411 RtsFlags.GranFlags.SparkPriority);
1412 fprintf(stderr,"SparkPriority2:%u.\n",
1413 RtsFlags.GranFlags.SparkPriority2);
1414 if (RtsFlags.GranFlags.SparkPriority2 <
1415 RtsFlags.GranFlags.SparkPriority) {
1416 fprintf(stderr,"WARNING: 2nd pri < main pri (%u<%u); 2nd pri has no effect\n",
1417 RtsFlags.GranFlags.SparkPriority2,
1418 RtsFlags.GranFlags.SparkPriority);
1422 /* plain pri spark is now invoked with -bX
1423 RtsFlags.GranFlags.DoPrioritySparking = 1;
1424 fprintf(stderr,"PrioritySparking.\n");
1430 if (rts_argv[arg][3] != '\0') {
1431 RtsFlags.GranFlags.ThunksToPack = decode(rts_argv[arg]+3);
1433 RtsFlags.GranFlags.ThunksToPack = 1;
1435 fprintf(stderr,"Thunks To Pack in one packet: %u.\n",
1436 RtsFlags.GranFlags.ThunksToPack);
1440 RtsFlags.GranFlags.RandomSteal = rtsFalse;
1441 fprintf(stderr,"Deterministic mode (no random stealing)\n");
1444 /* The following class of options contains eXperimental */
1445 /* features in connection with exploiting granularity */
1446 /* information. I.e. if -bY is chosen these options */
1447 /* tell the RTS what to do with the supplied info --HWL */
1450 if (rts_argv[arg][3] != '\0') {
1451 RtsFlags.GranFlags.packBufferSize_internal = decode(rts_argv[arg]+3);
1453 RtsFlags.GranFlags.packBufferSize_internal = GRANSIM_DEFAULT_PACK_BUFFER_SIZE;
1455 fprintf(stderr,"Size of GranSim internal pack buffer: %u.\n",
1456 RtsFlags.GranFlags.packBufferSize_internal);
1460 switch(rts_argv[arg][3]) {
1463 RtsFlags.GranFlags.DoPrioritySparking = 1;
1464 fprintf(stderr,"Priority Sparking with Normal Priorities.\n");
1465 RtsFlags.GranFlags.InversePriorities = rtsFalse;
1466 RtsFlags.GranFlags.RandomPriorities = rtsFalse;
1467 RtsFlags.GranFlags.IgnorePriorities = rtsFalse;
1471 RtsFlags.GranFlags.DoPrioritySparking = 1;
1472 fprintf(stderr,"Priority Sparking with Inverse Priorities.\n");
1473 RtsFlags.GranFlags.InversePriorities++;
1477 RtsFlags.GranFlags.DoPrioritySparking = 1;
1478 fprintf(stderr,"Priority Sparking with Random Priorities.\n");
1479 RtsFlags.GranFlags.RandomPriorities++;
1483 RtsFlags.GranFlags.DoPrioritySparking = 1;
1484 fprintf(stderr,"Priority Sparking with No Priorities.\n");
1485 RtsFlags.GranFlags.IgnorePriorities++;
1489 bad_option( rts_argv[arg] );
1495 switch(rts_argv[arg][3]) {
1498 RtsFlags.GranFlags.DoAlwaysCreateThreads=rtsFalse;
1499 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1503 RtsFlags.GranFlags.DoBulkFetching=rtsFalse;
1507 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1511 RtsFlags.GranFlags.DoFairSchedule=rtsFalse;
1515 RtsFlags.GranFlags.DoStealThreadsFirst=rtsFalse;
1516 RtsFlags.GranFlags.DoThreadMigration=rtsFalse;
1520 RtsFlags.GranFlags.DoAsyncFetch=rtsFalse;
1524 RtsFlags.GranFlags.PreferSparksOfLocalNodes=rtsFalse;
1528 RtsFlags.GranFlags.GranSimStats.Suppressed=rtsTrue;
1532 RtsFlags.GranFlags.GranSimStats.Sparks=rtsFalse;
1536 RtsFlags.GranFlags.GranSimStats.Heap=rtsFalse;
1540 RtsFlags.GranFlags.GranSimStats.Binary=rtsFalse;
1544 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
1548 RtsFlags.GranFlags.DoPrioritySparking = rtsFalse;
1549 RtsFlags.GranFlags.SparkPriority = rtsFalse;
1553 RtsFlags.GranFlags.DoPriorityScheduling = rtsFalse;
1557 RtsFlags.GranFlags.RandomSteal = rtsFalse;
1561 bad_option( rts_argv[arg] );
1566 # if defined(GRAN_CHECK) && defined(GRAN)
1568 switch(rts_argv[arg][3]) {
1569 case 'Q': /* Set pack buffer size (same as 'Q' in GUM) */
1570 if (rts_argv[arg][4] != '\0') {
1571 RtsFlags.GranFlags.packBufferSize = decode(rts_argv[arg]+4);
1572 fprintf(stderr,"Pack buffer size: %d\n",
1573 RtsFlags.GranFlags.packBufferSize);
1575 fprintf(stderr, "setupRtsFlags: missing size of PackBuffer (for -Q)\n");
1581 if (isdigit(rts_argv[arg][3])) {/* Set all debugging options in one */
1582 /* hack warning: interpret the flags as a binary number */
1583 nat n = decode(rts_argv[arg]+3);
1584 set_GranSim_debug_options(n);
1587 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1588 if (rts_argv[arg][3] == gran_debug_opts_flags[i])
1591 if (i==MAX_GRAN_DEBUG_OPTION+1) {
1592 fprintf(stderr, "Valid GranSim debug options are:\n");
1593 help_GranSim_debug_options(MAX_GRAN_DEBUG_MASK);
1594 bad_option( rts_argv[arg] );
1595 } else { // flag found; now set it
1596 set_GranSim_debug_options(GRAN_DEBUG_MASK(i)); // 2^i
1602 case 'e': /* event trace; also -bD1 */
1603 fprintf(stderr,"DEBUG: event_trace; printing event trace.\n");
1604 RtsFlags.GranFlags.Debug.event_trace = rtsTrue;
1605 /* RtsFlags.GranFlags.event_trace=rtsTrue; */
1608 case 'E': /* event statistics; also -bD2 */
1609 fprintf(stderr,"DEBUG: event_stats; printing event statistics.\n");
1610 RtsFlags.GranFlags.Debug.event_stats = rtsTrue;
1611 /* RtsFlags.GranFlags.Debug |= 0x20; print event statistics */
1614 case 'f': /* thunkStealing; also -bD4 */
1615 fprintf(stderr,"DEBUG: thunkStealing; printing forwarding of FETCHNODES.\n");
1616 RtsFlags.GranFlags.Debug.thunkStealing = rtsTrue;
1617 /* RtsFlags.GranFlags.Debug |= 0x2; print fwd messages */
1620 case 'z': /* blockOnFetch; also -bD8 */
1621 fprintf(stderr,"DEBUG: blockOnFetch; check for blocked on fetch.\n");
1622 RtsFlags.GranFlags.Debug.blockOnFetch = rtsTrue;
1623 /* RtsFlags.GranFlags.Debug |= 0x4; debug non-reschedule-on-fetch */
1626 case 't': /* blockOnFetch_sanity; also -bD16 */
1627 fprintf(stderr,"DEBUG: blockOnFetch_sanity; check for TSO asleep on fetch.\n");
1628 RtsFlags.GranFlags.Debug.blockOnFetch_sanity = rtsTrue;
1629 /* RtsFlags.GranFlags.Debug |= 0x10; debug TSO asleep for fetch */
1632 case 'S': /* priSpark; also -bD32 */
1633 fprintf(stderr,"DEBUG: priSpark; priority sparking.\n");
1634 RtsFlags.GranFlags.Debug.priSpark = rtsTrue;
1637 case 's': /* priSched; also -bD64 */
1638 fprintf(stderr,"DEBUG: priSched; priority scheduling.\n");
1639 RtsFlags.GranFlags.Debug.priSched = rtsTrue;
1642 case 'F': /* findWork; also -bD128 */
1643 fprintf(stderr,"DEBUG: findWork; searching spark-pools (local & remote), thread queues for work.\n");
1644 RtsFlags.GranFlags.Debug.findWork = rtsTrue;
1647 case 'g': /* globalBlock; also -bD256 */
1648 fprintf(stderr,"DEBUG: globalBlock; blocking on remote closures (FETCHMEs etc in GUM).\n");
1649 RtsFlags.GranFlags.Debug.globalBlock = rtsTrue;
1652 case 'G': /* pack; also -bD512 */
1653 fprintf(stderr,"DEBUG: pack; routines for (un-)packing graph structures.\n");
1654 RtsFlags.GranFlags.Debug.pack = rtsTrue;
1657 case 'P': /* packBuffer; also -bD1024 */
1658 fprintf(stderr,"DEBUG: packBuffer; routines handling pack buffer (GranSim internal!).\n");
1659 RtsFlags.GranFlags.Debug.packBuffer = rtsTrue;
1662 case 'o': /* sortedQ; also -bD2048 */
1663 fprintf(stderr,"DEBUG: sortedQ; check whether spark/thread queues are sorted.\n");
1664 RtsFlags.GranFlags.Debug.sortedQ = rtsTrue;
1667 case 'r': /* randomSteal; also -bD4096 */
1668 fprintf(stderr,"DEBUG: randomSteal; stealing sparks/threads from random PEs.\n");
1669 RtsFlags.GranFlags.Debug.randomSteal = rtsTrue;
1672 case 'q': /* checkSparkQ; also -bD8192 */
1673 fprintf(stderr,"DEBUG: checkSparkQ; check consistency of the spark queues.\n");
1674 RtsFlags.GranFlags.Debug.checkSparkQ = rtsTrue;
1677 case ':': /* checkLight; also -bD16384 */
1678 fprintf(stderr,"DEBUG: checkLight; check GranSim-Light setup.\n");
1679 RtsFlags.GranFlags.Debug.checkLight = rtsTrue;
1682 case 'b': /* bq; also -bD32768 */
1683 fprintf(stderr,"DEBUG: bq; check blocking queues\n");
1684 RtsFlags.GranFlags.Debug.bq = rtsTrue;
1687 case 'd': /* all options turned on */
1688 fprintf(stderr,"DEBUG: all options turned on.\n");
1689 set_GranSim_debug_options(MAX_GRAN_DEBUG_MASK);
1690 /* RtsFlags.GranFlags.Debug |= 0x40; */
1694 /* RtsFlags.GranFlags.Debug = 1; */
1700 # endif /* GRAN_CHECK */
1702 bad_option( rts_argv[arg] );
1708 Interpret n as a binary number masking GranSim debug options and set the
1709 correxponding option. See gran_debug_opts_strs for explanations of the flags.
1712 set_GranSim_debug_options(nat n) {
1715 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1717 fprintf(stderr, gran_debug_opts_strs[i]);
1719 case 0: RtsFlags.GranFlags.Debug.event_trace = rtsTrue; break;
1720 case 1: RtsFlags.GranFlags.Debug.event_stats = rtsTrue; break;
1721 case 2: RtsFlags.GranFlags.Debug.bq = rtsTrue; break;
1722 case 3: RtsFlags.GranFlags.Debug.pack = rtsTrue; break;
1723 case 4: RtsFlags.GranFlags.Debug.checkSparkQ = rtsTrue; break;
1724 case 5: RtsFlags.GranFlags.Debug.thunkStealing = rtsTrue; break;
1725 case 6: RtsFlags.GranFlags.Debug.randomSteal = rtsTrue; break;
1726 case 7: RtsFlags.GranFlags.Debug.findWork = rtsTrue; break;
1727 case 8: RtsFlags.GranFlags.Debug.unused = rtsTrue; break;
1728 case 9: RtsFlags.GranFlags.Debug.pri = rtsTrue; break;
1729 case 10: RtsFlags.GranFlags.Debug.checkLight = rtsTrue; break;
1730 case 11: RtsFlags.GranFlags.Debug.sortedQ = rtsTrue; break;
1731 case 12: RtsFlags.GranFlags.Debug.blockOnFetch = rtsTrue; break;
1732 case 13: RtsFlags.GranFlags.Debug.packBuffer = rtsTrue; break;
1733 case 14: RtsFlags.GranFlags.Debug.blockOnFetch_sanity = rtsTrue; break;
1734 default: barf("set_GranSim_debug_options: only %d debug options expected");
1740 Print one line explanation for each of the GranSim debug options specified
1744 help_GranSim_debug_options(nat n) {
1747 for (i=0; i<=MAX_GRAN_DEBUG_OPTION; i++)
1749 fprintf(stderr, gran_debug_opts_strs[i]);
1755 process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error)
1758 if (rts_argv[arg][1] != 'q') { /* All GUM options start with -q */
1759 belch("Warning: GUM option does not start with -q: %s", rts_argv[arg]);
1763 /* Communication and task creation cost parameters */
1764 switch(rts_argv[arg][2]) {
1765 case 'e': /* -qe<n> ... allow <n> local sparks */
1766 if (rts_argv[arg][3] != '\0') { /* otherwise, stick w/ the default */
1767 RtsFlags.ParFlags.maxLocalSparks
1768 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1770 if (RtsFlags.ParFlags.maxLocalSparks <= 0) {
1771 belch("setupRtsFlags: bad value for -e\n");
1775 IF_PAR_DEBUG(verbose,
1776 belch("-qe<n>: max %d local sparks",
1777 RtsFlags.ParFlags.maxLocalSparks));
1781 if (rts_argv[arg][3] != '\0') {
1782 RtsFlags.ParFlags.maxThreads
1783 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1785 belch("setupRtsFlags: missing size for -qt\n");
1788 IF_PAR_DEBUG(verbose,
1789 belch("-qt<n>: max %d threads",
1790 RtsFlags.ParFlags.maxThreads));
1794 if (rts_argv[arg][3] != '\0')
1795 RtsFlags.ParFlags.maxFishes = decode(rts_argv[arg]+3);
1797 RtsFlags.ParFlags.maxFishes = MAX_FISHES;
1799 IF_PAR_DEBUG(verbose,
1800 belch("-qf<n>: max %d fishes sent out at one time",
1801 RtsFlags.ParFlags.maxFishes));
1805 if (rts_argv[arg][3] != '\0') {
1806 RtsFlags.ParFlags.fishDelay
1807 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1809 belch("setupRtsFlags: missing fish delay time for -qF\n");
1812 IF_PAR_DEBUG(verbose,
1813 belch("-qF<n>: fish delay time %d us",
1814 RtsFlags.ParFlags.fishDelay));
1818 RtsFlags.ParFlags.outputDisabled = rtsTrue;
1819 IF_PAR_DEBUG(verbose,
1820 belch("-qO: output disabled"));
1823 case 'g': /* -qg<n> ... globalisation scheme */
1824 if (rts_argv[arg][3] != '\0') {
1825 RtsFlags.ParFlags.globalising = decode(rts_argv[arg]+3);
1827 belch("setupRtsFlags: missing identifier for globalisation scheme (for -qg)\n");
1830 IF_PAR_DEBUG(verbose,
1831 belch("-qg<n>: globalisation scheme set to %d",
1832 RtsFlags.ParFlags.globalising));
1835 case 'h': /* -qh<n> ... max number of thunks (except root) in packet */
1836 if (rts_argv[arg][3] != '\0') {
1837 RtsFlags.ParFlags.thunksToPack = decode(rts_argv[arg]+3);
1839 belch("setupRtsFlags: missing number of thunks per packet (for -qh)\n");
1842 IF_PAR_DEBUG(verbose,
1843 belch("-qh<n>: thunks per packet set to %d",
1844 RtsFlags.ParFlags.thunksToPack));
1847 case 'P': /* -qP for writing a log file */
1848 //RtsFlags.ParFlags.ParStats.Full = rtsFalse;
1849 /* same encoding as in GranSim after -bP */
1850 switch(rts_argv[arg][3]) {
1851 case '\0': RtsFlags.ParFlags.ParStats.Full = rtsTrue;
1852 break; // nothing special, just an ordinary profile
1853 case '0': RtsFlags.ParFlags.ParStats.Suppressed = rtsTrue;
1854 RtsFlags.ParFlags.ParStats.Full = rtsFalse;
1856 case 'b': RtsFlags.ParFlags.ParStats.Binary = rtsTrue;
1858 case 's': RtsFlags.ParFlags.ParStats.Sparks = rtsTrue;
1860 //case 'h': RtsFlags.parFlags.ParStats.Heap = rtsTrue;
1862 case 'n': RtsFlags.ParFlags.ParStats.NewLogfile = rtsTrue;
1865 # if defined(PAR_TICKY)
1866 RtsFlags.ParFlags.ParStats.Global = rtsTrue;
1868 fprintf(stderr,"-qPg is only possible for a PAR_TICKY RTS, which this is not");
1869 stg_exit(EXIT_FAILURE);
1872 default: barf("Unknown option -qP%c", rts_argv[arg][2]);
1874 IF_PAR_DEBUG(verbose,
1875 belch("(-qP) writing to log-file (RtsFlags.ParFlags.ParStats.Full=%s)",
1876 (RtsFlags.ParFlags.ParStats.Full ? "rtsTrue" : "rtsFalse")));
1879 case 'Q': /* -qQ<n> ... set pack buffer size to <n> */
1880 if (rts_argv[arg][3] != '\0') {
1881 RtsFlags.ParFlags.packBufferSize = decode(rts_argv[arg]+3);
1883 belch("setupRtsFlags: missing size of PackBuffer (for -qQ)\n");
1886 IF_PAR_DEBUG(verbose,
1887 belch("-qQ<n>: pack buffer size set to %d",
1888 RtsFlags.ParFlags.packBufferSize));
1892 RtsFlags.ParFlags.doFairScheduling = rtsTrue;
1893 IF_PAR_DEBUG(verbose,
1894 belch("-qR: fair-ish scheduling"));
1899 if (rts_argv[arg][3] != '\0') {
1900 RtsFlags.ParFlags.wait
1901 = strtol(rts_argv[arg]+3, (char **) NULL, 10);
1903 RtsFlags.ParFlags.wait = 1000;
1905 IF_PAR_DEBUG(verbose,
1906 belch("-qw<n>: length of wait loop after synchr before reduction: %d",
1907 RtsFlags.ParFlags.wait));
1910 case 'D': /* -qD ... all the debugging options */
1911 if (isdigit(rts_argv[arg][3])) {/* Set all debugging options in one */
1912 /* hack warning: interpret the flags as a binary number */
1913 nat n = decode(rts_argv[arg]+3);
1914 set_par_debug_options(n);
1917 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1918 if (rts_argv[arg][3] == par_debug_opts_flags[i])
1921 if (i==MAX_PAR_DEBUG_OPTION+1) {
1922 fprintf(stderr, "Valid GUM debug options are:\n");
1923 help_par_debug_options(MAX_PAR_DEBUG_MASK);
1924 bad_option( rts_argv[arg] );
1925 } else { // flag found; now set it
1926 set_par_debug_options(PAR_DEBUG_MASK(i)); // 2^i
1932 belch("Unknown option -q%c (%d opts in total)",
1933 rts_argv[arg][2], *rts_argc);
1939 Interpret n as a binary number masking Par debug options and set the
1940 correxponding option. See par_debug_opts_strs for explanations of the flags.
1943 set_par_debug_options(nat n) {
1946 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1948 fprintf(stderr, par_debug_opts_strs[i]);
1950 case 0: RtsFlags.ParFlags.Debug.verbose = rtsTrue; break;
1951 case 1: RtsFlags.ParFlags.Debug.bq = rtsTrue; break;
1952 case 2: RtsFlags.ParFlags.Debug.schedule = rtsTrue; break;
1953 case 3: RtsFlags.ParFlags.Debug.free = rtsTrue; break;
1954 case 4: RtsFlags.ParFlags.Debug.resume = rtsTrue; break;
1955 case 5: RtsFlags.ParFlags.Debug.weight = rtsTrue; break;
1956 case 6: RtsFlags.ParFlags.Debug.fetch = rtsTrue; break;
1957 //case 7: RtsFlags.ParFlags.Debug.ack = rtsTrue; break;
1958 case 7: RtsFlags.ParFlags.Debug.fish = rtsTrue; break;
1959 case 8: RtsFlags.ParFlags.Debug.tables = rtsTrue; break;
1960 case 9: RtsFlags.ParFlags.Debug.packet = rtsTrue; break;
1961 case 10: RtsFlags.ParFlags.Debug.pack = rtsTrue; break;
1962 case 11: RtsFlags.ParFlags.Debug.paranoia = rtsTrue; break;
1963 default: barf("set_par_debug_options: only %d debug options expected",
1964 MAX_PAR_DEBUG_OPTION);
1970 Print one line explanation for each of the GranSim debug options specified
1974 help_par_debug_options(nat n) {
1977 for (i=0; i<=MAX_PAR_DEBUG_OPTION; i++)
1979 fprintf(stderr, par_debug_opts_strs[i]);
1986 set_debug_options(nat n) {
1989 for (i=0; i<=MAX_DEBUG_OPTION; i++)
1991 fprintf(stderr, debug_opts_strs[i]);
1993 case 0: RtsFlags.DebugFlags.scheduler = rtsTrue; break;
1994 case 1: RtsFlags.DebugFlags.evaluator = rtsTrue; break;
1995 case 2: RtsFlags.DebugFlags.codegen = rtsTrue; break;
1996 case 3: RtsFlags.DebugFlags.weak = rtsTrue; break;
1997 case 4: RtsFlags.DebugFlags.gccafs = rtsTrue; break;
1998 case 5: RtsFlags.DebugFlags.gc = rtsTrue; break;
1999 case 6: RtsFlags.DebugFlags.block_alloc = rtsTrue; break;
2000 case 7: RtsFlags.DebugFlags.sanity = rtsTrue; break;
2001 case 8: RtsFlags.DebugFlags.stable = rtsTrue; break;
2002 case 9: RtsFlags.DebugFlags.prof = rtsTrue; break;
2003 case 10: RtsFlags.DebugFlags.gran = rtsTrue; break;
2004 case 11: RtsFlags.DebugFlags.par = rtsTrue; break;
2005 default: barf("set_debug_options: only %d debug options expected",
2012 help_debug_options(nat n) {
2015 for (i=0; i<=MAX_DEBUG_OPTION; i++)
2017 fprintf(stderr, debug_opts_strs[i]);
2021 //@node Aux fcts, , GranSim specific options
2022 //@subsection Aux fcts
2024 static FILE * /* return NULL on error */
2027 int argc, char *argv[],
2028 int rts_argc, char *rts_argv[],
2029 const char *FILENAME_FMT)
2033 if (strequal(rts_argv[arg]+2, "stderr")) /* use real stderr */
2035 else if (rts_argv[arg][2] != '\0') /* stats file specified */
2036 f = fopen(rts_argv[arg]+2,"w");
2038 char stats_filename[STATS_FILENAME_MAXLEN]; /* default <program>.<ext> */
2039 sprintf(stats_filename, FILENAME_FMT, argv[0]);
2040 f = fopen(stats_filename,"w");
2043 fprintf(stderr, "Can't open stats file %s\n", rts_argv[arg]+2);
2045 /* Write argv and rtsv into start of stats file */
2047 for(count = 0; count < argc; count++)
2048 fprintf(f, "%s ", argv[count]);
2049 fprintf(f, "+RTS ");
2050 for(count = 0; count < rts_argc; count++)
2051 fprintf(f, "%s ", rts_argv[count]);
2059 decode(const char *s)
2070 if (c == 'g' || c == 'G')
2071 m *= 1000*1000*1000; /* UNchecked! */
2072 else if (c == 'm' || c == 'M')
2073 m *= 1000*1000; /* We do not use powers of 2 (1024) */
2074 else if (c == 'k' || c == 'K') /* to avoid possible bad effects on */
2075 m *= 1000; /* a direct-mapped cache. */
2076 else if (c == 'w' || c == 'W')
2083 bad_option(const char *s)
2085 prog_belch("bad RTS option: %s", s);
2086 stg_exit(EXIT_FAILURE);