RtsFlags.c 78 KB
Newer Older
1
/* -----------------------------------------------------------------------------
2 3
 *
 * (c) The AQUA Project, Glasgow University, 1994-1997
Simon Marlow's avatar
Simon Marlow committed
4
 * (c) The GHC Team, 1998-2006
5 6 7 8 9
 *
 * Functions for parsing the argument list.
 *
 * ---------------------------------------------------------------------------*/

10
#include "PosixSource.h"
11 12 13
#include "Rts.h"
#include "RtsFlags.h"
#include "RtsUtils.h"
14
#include "Profiling.h"
15

16 17
#ifdef HAVE_CTYPE_H
#include <ctype.h>
18 19
#endif

20 21 22 23 24 25 26 27
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif

28 29 30
#include <stdlib.h>
#include <string.h>

31 32
// Flag Structure
RTS_FLAGS RtsFlags;
33 34 35 36

/*
 * Split argument lists
 */
sof's avatar
sof committed
37
int     prog_argc = 0;    /* an "int" so as to match normal "argc" */
38
char  **prog_argv = NULL;
39 40
int     full_prog_argc = 0;    /* an "int" so as to match normal "argc" */
char  **full_prog_argv = NULL;
sof's avatar
sof committed
41
char   *prog_name = NULL; /* 'basename' of prog_argv[0] */
42
int     rts_argc = 0;  /* ditto */
43 44 45 46 47 48 49 50
char   *rts_argv[MAX_RTS_ARGS];

/*
 * constants, used later 
 */
#define RTS 1
#define PGM 0

51 52
#if defined(GRAN)

sof's avatar
sof committed
53
static char *gran_debug_opts_strs[] = {
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
  "DEBUG (-bDe, -bD1): event_trace; printing event trace.\n",
  "DEBUG (-bDE, -bD2): event_stats; printing event statistics.\n",
  "DEBUG (-bDb, -bD4): bq; check blocking queues\n",
  "DEBUG (-bDG, -bD8): pack; routines for (un-)packing graph structures.\n",
  "DEBUG (-bDq, -bD16): checkSparkQ; check consistency of the spark queues.\n",
  "DEBUG (-bDf, -bD32): thunkStealing; print forwarding of fetches.\n",
  "DEBUG (-bDr, -bD64): randomSteal; stealing sparks/threads from random PEs.\n",
  "DEBUG (-bDF, -bD128): findWork; searching spark-pools (local & remote), thread queues for work.\n",
  "DEBUG (-bDu, -bD256): unused; currently unused flag.\n",
  "DEBUG (-bDS, -bD512): pri; priority sparking or scheduling.\n",
  "DEBUG (-bD:, -bD1024): checkLight; check GranSim-Light setup.\n",
  "DEBUG (-bDo, -bD2048): sortedQ; check whether spark/thread queues are sorted.\n",
  "DEBUG (-bDz, -bD4096): blockOnFetch; check for blocked on fetch.\n",
  "DEBUG (-bDP, -bD8192): packBuffer; routines handling pack buffer (GranSim internal!).\n",
  "DEBUG (-bDt, -bD16384): blockOnFetch_sanity; check for TSO asleep on fetch.\n",
};

/* one character codes for the available debug options */
sof's avatar
sof committed
72
static char gran_debug_opts_flags[] = {
73 74 75 76 77
  'e', 'E', 'b', 'G', 'q', 'f', 'r', 'F', 'u', 'S', ':', 'o', 'z', 'P', 't'
};

#elif defined(PAR)

sof's avatar
sof committed
78
static char *par_debug_opts_strs[] = {
79
  "DEBUG (-qDv, -qD1): verbose; be generally verbose with parallel related stuff.\n",
80
  "DEBUG (-qDq, -qD2): bq; print blocking queues.\n",
81 82 83
  "DEBUG (-qDs, -qD4): schedule; scheduling of parallel threads.\n",
  "DEBUG (-qDe, -qD8): free; free messages.\n",
  "DEBUG (-qDr, -qD16): resume; resume messages.\n",
84
  "DEBUG (-qDw, -qD32): weight; print weights and distrib GC stuff.\n",
85
  "DEBUG (-qDF, -qD64): fetch; fetch messages.\n",
86 87 88 89 90
  // "DEBUG (-qDa, -qD128): ack; ack messages.\n",
  "DEBUG (-qDf, -qD128): fish; fish messages.\n",
  //"DEBUG (-qDo, -qD512): forward; forwarding messages to other PEs.\n",
  "DEBUG (-qDl, -qD256): tables; print internal LAGA etc tables.\n",
  "DEBUG (-qDo, -qD512): packet; packets and graph structures when packing.\n",
91 92
  "DEBUG (-qDp, -qD1024): pack; packing and unpacking graphs.\n",
  "DEBUG (-qDz, -qD2048): paranoia; ridiculously detailed output (excellent for filling a partition).\n"
93 94 95
};

/* one character codes for the available debug options */
sof's avatar
sof committed
96
static char par_debug_opts_flags[] = {
97
  'v', 'q', 's', 'e', 'r', 'w', 'F', 'f', 'l', 'o', 'p', 'z'
98 99 100 101
};

#endif /* PAR */

102 103 104 105
/* -----------------------------------------------------------------------------
   Static function decls
   -------------------------------------------------------------------------- */

106
static int		/* return NULL on error */
107 108 109 110
open_stats_file (
    I_ arg,
    int argc, char *argv[],
    int rts_argc, char *rts_argv[],
111 112
    const char *FILENAME_FMT,
    FILE **file_ret);
113 114 115 116

static I_ decode(const char *s);
static void bad_option(const char *s);

117 118 119 120 121 122 123 124 125 126 127
#if defined(GRAN)
static void enable_GranSimLight(void);
static void process_gran_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
static void set_GranSim_debug_options(nat n);
static void help_GranSim_debug_options(nat n);
#elif defined(PAR)
static void process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool *error);
static void set_par_debug_options(nat n);
static void help_par_debug_options(nat n);
#endif

128 129 130 131 132 133 134 135 136
/* -----------------------------------------------------------------------------
 * Command-line option parsing routines.
 * ---------------------------------------------------------------------------*/

void initRtsFlagsDefaults(void)
{
    RtsFlags.GcFlags.statsFile		= NULL;
    RtsFlags.GcFlags.giveStats		= NO_GC_STATS;

137
    RtsFlags.GcFlags.maxStkSize		= (8 * 1024 * 1024) / sizeof(W_);
138 139
    RtsFlags.GcFlags.initialStkSize	= 1024 / sizeof(W_);

140
    RtsFlags.GcFlags.minAllocAreaSize   = (512 * 1024)        / BLOCK_SIZE;
141
    RtsFlags.GcFlags.minOldGenSize      = (1024 * 1024)       / BLOCK_SIZE;
142
    RtsFlags.GcFlags.maxHeapSize	= 0;    /* off by default */
143
    RtsFlags.GcFlags.heapSizeSuggestion	= 0;    /* none */
144
    RtsFlags.GcFlags.pcFreeHeap		= 3;	/* 3% */
145
    RtsFlags.GcFlags.oldGenFactor       = 2;
146 147 148 149 150 151
#if defined(PAR)
    /* A hack currently needed for GUM -- HWL */
    RtsFlags.GcFlags.generations        = 1;
    RtsFlags.GcFlags.steps              = 2;
    RtsFlags.GcFlags.squeezeUpdFrames	= rtsFalse;
#else
152
    RtsFlags.GcFlags.generations        = 2;
153
    RtsFlags.GcFlags.steps              = 2;
154
    RtsFlags.GcFlags.squeezeUpdFrames	= rtsTrue;
155
#endif
156
    RtsFlags.GcFlags.compact            = rtsFalse;
157
    RtsFlags.GcFlags.compactThreshold   = 30.0;
158
    RtsFlags.GcFlags.sweep              = rtsFalse;
159 160 161
#ifdef RTS_GTK_FRONTPANEL
    RtsFlags.GcFlags.frontpanel         = rtsFalse;
#endif
162
    RtsFlags.GcFlags.idleGCDelayTime    = 300; /* millisecs */
163

164 165 166 167 168 169 170 171 172 173 174 175
#if osf3_HOST_OS
/* ToDo: Perhaps by adjusting this value we can make linking without
 * -static work (i.e., not generate a core-dumping executable)? */
# if SIZEOF_VOID_P == 8
    RtsFlags.GcFlags.heapBase           = 0x180000000L;
# else
#  error I have no idea where to begin the heap on a non-64-bit osf3 machine.
# endif
#else
    RtsFlags.GcFlags.heapBase           = 0;   /* means don't care */
#endif

176 177
#ifdef DEBUG
    RtsFlags.DebugFlags.scheduler	= rtsFalse;
178
    RtsFlags.DebugFlags.interpreter	= rtsFalse;
179 180 181 182 183 184
    RtsFlags.DebugFlags.weak		= rtsFalse;
    RtsFlags.DebugFlags.gccafs		= rtsFalse;
    RtsFlags.DebugFlags.gc		= rtsFalse;
    RtsFlags.DebugFlags.block_alloc	= rtsFalse;
    RtsFlags.DebugFlags.sanity		= rtsFalse;
    RtsFlags.DebugFlags.stable		= rtsFalse;
185
    RtsFlags.DebugFlags.stm             = rtsFalse;
186 187 188
    RtsFlags.DebugFlags.prof		= rtsFalse;
    RtsFlags.DebugFlags.gran		= rtsFalse;
    RtsFlags.DebugFlags.par		= rtsFalse;
189
    RtsFlags.DebugFlags.apply		= rtsFalse;
190
    RtsFlags.DebugFlags.linker		= rtsFalse;
191
    RtsFlags.DebugFlags.squeeze		= rtsFalse;
192
    RtsFlags.DebugFlags.hpc		= rtsFalse;
193 194
#endif

195 196 197 198
#if defined(PROFILING) || defined(PAR)
    RtsFlags.CcFlags.doCostCentres	= 0;
#endif /* PROFILING or PAR */

199
    RtsFlags.ProfFlags.doHeapProfile      = rtsFalse;
200
    RtsFlags.ProfFlags.profileInterval    = 100;
201 202

#ifdef PROFILING
203
    RtsFlags.ProfFlags.includeTSOs        = rtsFalse;
204
    RtsFlags.ProfFlags.showCCSOnException = rtsFalse;
205
    RtsFlags.ProfFlags.maxRetainerSetSize = 8;
ravi@bluespec.com's avatar
ravi@bluespec.com committed
206
    RtsFlags.ProfFlags.ccsLength          = 25;
207 208 209 210
    RtsFlags.ProfFlags.modSelector        = NULL;
    RtsFlags.ProfFlags.descrSelector      = NULL;
    RtsFlags.ProfFlags.typeSelector       = NULL;
    RtsFlags.ProfFlags.ccSelector         = NULL;
211
    RtsFlags.ProfFlags.ccsSelector        = NULL;
212 213
    RtsFlags.ProfFlags.retainerSelector   = NULL;
    RtsFlags.ProfFlags.bioSelector        = NULL;
214 215
#endif

216 217
    RtsFlags.MiscFlags.tickInterval	= 20;  /* In milliseconds */
    RtsFlags.ConcFlags.ctxtSwitchTime	= 20;  /* In milliseconds */
218

219
    RtsFlags.MiscFlags.install_signal_handlers = rtsTrue;
Ian Lynagh's avatar
Ian Lynagh committed
220
    RtsFlags.MiscFlags.machineReadable = rtsFalse;
221
    RtsFlags.MiscFlags.linkerMemBase    = 0;
222

223
#ifdef THREADED_RTS
224
    RtsFlags.ParFlags.nNodes	        = 1;
225 226
    RtsFlags.ParFlags.migrate           = rtsTrue;
    RtsFlags.ParFlags.wakeupMigrate     = rtsFalse;
227 228
    RtsFlags.ParFlags.parGcEnabled      = 1;
    RtsFlags.ParFlags.parGcGen          = 1;
229
    RtsFlags.ParFlags.parGcLoadBalancing = 1;
230
#endif
231

232
#ifdef PAR
233
    RtsFlags.ParFlags.ParStats.Full   	  = rtsFalse;
234
    RtsFlags.ParFlags.ParStats.Suppressed = rtsFalse;
235 236 237 238 239 240
    RtsFlags.ParFlags.ParStats.Binary 	  = rtsFalse;
    RtsFlags.ParFlags.ParStats.Sparks 	  = rtsFalse;
    RtsFlags.ParFlags.ParStats.Heap   	  = rtsFalse;
    RtsFlags.ParFlags.ParStats.NewLogfile = rtsFalse;
    RtsFlags.ParFlags.ParStats.Global     = rtsFalse;

241
    RtsFlags.ParFlags.outputDisabled	= rtsFalse;
242 243 244 245 246
#ifdef DIST
    RtsFlags.ParFlags.doFairScheduling  = rtsTrue;  /* fair sched by def */
#else
    RtsFlags.ParFlags.doFairScheduling  = rtsFalse;  /* unfair sched by def */
#endif
247
    RtsFlags.ParFlags.packBufferSize	= 1024;
248 249
    RtsFlags.ParFlags.thunksToPack      = 1; /* 0 ... infinity; */
    RtsFlags.ParFlags.globalising       = 1; /* 0 ... everything */
250 251 252
    RtsFlags.ParFlags.maxThreads        = 1024;
    RtsFlags.ParFlags.maxFishes        = MAX_FISHES;
    RtsFlags.ParFlags.fishDelay         = FISH_DELAY;
253 254
#endif

255
#if defined(PAR) || defined(THREADED_RTS)
256
    RtsFlags.ParFlags.maxLocalSparks	= 4096;
257
#endif /* PAR || THREADED_RTS */
258 259 260

#if defined(GRAN)
    /* ToDo: check defaults for GranSim and GUM */
261
    RtsFlags.GcFlags.maxStkSize		= (8 * 1024 * 1024) / sizeof(W_);
262 263
    RtsFlags.GcFlags.initialStkSize	= 1024 / sizeof(W_);

264
    RtsFlags.GranFlags.maxThreads	= 65536; // refers to mandatory threads
265 266 267 268 269 270 271
    RtsFlags.GranFlags.GranSimStats.Full	= rtsFalse;
    RtsFlags.GranFlags.GranSimStats.Suppressed	= rtsFalse;
    RtsFlags.GranFlags.GranSimStats.Binary      = rtsFalse;
    RtsFlags.GranFlags.GranSimStats.Sparks      = rtsFalse;
    RtsFlags.GranFlags.GranSimStats.Heap        = rtsFalse;
    RtsFlags.GranFlags.GranSimStats.NewLogfile  = rtsFalse;
    RtsFlags.GranFlags.GranSimStats.Global      = rtsFalse;
272 273 274 275

    RtsFlags.GranFlags.packBufferSize	= 1024;
    RtsFlags.GranFlags.packBufferSize_internal = GRANSIM_DEFAULT_PACK_BUFFER_SIZE;

276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314
    RtsFlags.GranFlags.proc         = MAX_PROC;
    RtsFlags.GranFlags.Fishing      = rtsFalse;
    RtsFlags.GranFlags.maxFishes   = MAX_FISHES;
    RtsFlags.GranFlags.time_slice   = GRAN_TIME_SLICE;
    RtsFlags.GranFlags.Light        = rtsFalse;

    RtsFlags.GranFlags.Costs.latency =             LATENCY;          
    RtsFlags.GranFlags.Costs.additional_latency =  ADDITIONAL_LATENCY; 
    RtsFlags.GranFlags.Costs.fetchtime =           FETCHTIME; 
    RtsFlags.GranFlags.Costs.lunblocktime =        LOCALUNBLOCKTIME; 
    RtsFlags.GranFlags.Costs.gunblocktime =        GLOBALUNBLOCKTIME;
    RtsFlags.GranFlags.Costs.mpacktime =           MSGPACKTIME;      
    RtsFlags.GranFlags.Costs.munpacktime =         MSGUNPACKTIME;
    RtsFlags.GranFlags.Costs.mtidytime =           MSGTIDYTIME;

    RtsFlags.GranFlags.Costs.threadcreatetime =         THREADCREATETIME;
    RtsFlags.GranFlags.Costs.threadqueuetime =          THREADQUEUETIME;
    RtsFlags.GranFlags.Costs.threaddescheduletime =     THREADDESCHEDULETIME;
    RtsFlags.GranFlags.Costs.threadscheduletime =       THREADSCHEDULETIME;
    RtsFlags.GranFlags.Costs.threadcontextswitchtime =  THREADCONTEXTSWITCHTIME;

    RtsFlags.GranFlags.Costs.arith_cost =         ARITH_COST;       
    RtsFlags.GranFlags.Costs.branch_cost =        BRANCH_COST; 
    RtsFlags.GranFlags.Costs.load_cost =          LOAD_COST;        
    RtsFlags.GranFlags.Costs.store_cost =         STORE_COST; 
    RtsFlags.GranFlags.Costs.float_cost =         FLOAT_COST;       

    RtsFlags.GranFlags.Costs.heapalloc_cost =     HEAPALLOC_COST;

    RtsFlags.GranFlags.Costs.pri_spark_overhead = PRI_SPARK_OVERHEAD;        
    RtsFlags.GranFlags.Costs.pri_sched_overhead = PRI_SCHED_OVERHEAD;        

    RtsFlags.GranFlags.DoFairSchedule           = rtsFalse;             
    RtsFlags.GranFlags.DoAsyncFetch             = rtsFalse;        
    RtsFlags.GranFlags.DoStealThreadsFirst      = rtsFalse;        
    RtsFlags.GranFlags.DoAlwaysCreateThreads    = rtsFalse;      
    RtsFlags.GranFlags.DoBulkFetching           = rtsFalse;             
    RtsFlags.GranFlags.DoThreadMigration        = rtsFalse;          
    RtsFlags.GranFlags.FetchStrategy            = 2;                     
315
    RtsFlags.GranFlags.PreferSparksOfLocalNodes = rtsFalse;   
316 317 318 319 320 321 322 323 324
    RtsFlags.GranFlags.DoPrioritySparking       = rtsFalse;         
    RtsFlags.GranFlags.DoPriorityScheduling     = rtsFalse;       
    RtsFlags.GranFlags.SparkPriority            = 0;
    RtsFlags.GranFlags.SparkPriority2           = 0; 
    RtsFlags.GranFlags.RandomPriorities         = rtsFalse;           
    RtsFlags.GranFlags.InversePriorities        = rtsFalse;          
    RtsFlags.GranFlags.IgnorePriorities         = rtsFalse;           
    RtsFlags.GranFlags.ThunksToPack             = 0;                      
    RtsFlags.GranFlags.RandomSteal              = rtsTrue;
325 326 327
#endif

#ifdef TICKY_TICKY
328 329
    RtsFlags.TickyFlags.showTickyStats	 = rtsFalse;
    RtsFlags.TickyFlags.tickyFile	 = NULL;
330
#endif
Simon Marlow's avatar
Simon Marlow committed
331 332 333

    RtsFlags.TraceFlags.timestamp	= rtsFalse;
    RtsFlags.TraceFlags.sched 		= rtsFalse;
334
    RtsFlags.TraceFlags.gc 		= rtsFalse;
335 336

#ifdef USE_PAPI
337 338
    /* By default no special measurements taken */
    RtsFlags.PapiFlags.eventType        = 0;
339
    RtsFlags.PapiFlags.numUserEvents    = 0;
340
#endif
341 342 343 344 345 346 347 348 349 350 351 352 353 354
}

static const char *
usage_text[] = {
"",
"Usage: <prog> <args> [+RTS <rtsopts> | -RTS <args>] ... --RTS <args>",
"",
"   +RTS    Indicates run time system options follow",
"   -RTS    Indicates program arguments follow",
"  --RTS    Indicates that ALL subsequent arguments will be given to the",
"           program (including any of these RTS flags)",
"",
"The following run time system options are available:",
"",
355
"  -?       Prints this message and exits; the program is not executed",
356
"  --info   Print information about the RTS used by this program",
357
"",
358
"  -K<size> Sets the maximum stack size (default 8M)  Egs: -K32k   -K512k",
sof's avatar
sof committed
359
"  -k<size> Sets the initial thread stack size (default 1k)  Egs: -k4k   -k2m",
360 361
"",
"  -A<size> Sets the minimum allocation area size (default 256k) Egs: -A1m -A10k",
362
"  -M<size> Sets the maximum heap size (default unlimited)  Egs: -M256k -M1G",
363
"  -H<size> Sets the minimum heap size (default 0M)   Egs: -H24m  -H1G",
364
"  -m<n>    Minimum % of heap which must be available (default 3%)",
365
"  -G<n>    Number of generations (default: 2)",
366
"  -T<n>    Number of steps in younger generations (default: 2)",
367 368
"  -c<n>    Auto-enable compaction of the oldest generation when live data is",
"           at least <n>% of the maximum heap size set with -M (default: 30%)",
369
"  -c       Enable compaction for all major collections",
370
"  -w       Use mark-region for the oldest generation (experimental)",
371
#if defined(THREADED_RTS)
372 373
"  -I<sec>  Perform full GC after <sec> idle time (default: 0.3, 0 == off)",
#endif
374
"",
375 376 377
"  -t[<file>] One-line GC statistics (if <file> omitted, uses stderr)",
"  -s[<file>] Summary  GC statistics (if <file> omitted, uses stderr)",
"  -S[<file>] Detailed GC statistics (if <file> omitted, uses stderr)",
378 379 380
#ifdef RTS_GTK_FRONTPANEL
"  -f       Display front panel (requires X11 & GTK+)",
#endif
381 382 383 384 385 386
"",
"",
"  -Z       Don't squeeze out update frames on stack overflow",
"  -B       Sound the bell at the start of each garbage collection",
#if defined(PROFILING) || defined(PAR)
"",
387
"  -px      Time/allocation profile (XML)  (output file <program>.prof)",
andy's avatar
andy committed
388 389 390
"  -p       Time/allocation profile        (output file <program>.prof)",
"  -P       More detailed Time/Allocation profile",
"  -Pa      Give information about *all* cost centres",
391

392 393
# if defined(PROFILING)
"",
394 395 396 397 398 399 400 401
"  -hx            Heap residency profile (XML)   (output file <program>.prof)",
"  -h<break-down> Heap residency profile (hp2ps) (output file <program>.hp)",
"     break-down: c = cost centre stack (default)",
"                 m = module",
"                 d = closure description",
"                 y = type description",
"                 r = retainer",
"                 b = biography (LAG,DRAG,VOID,USE)",
402
"  A subset of closures may be selected thusly:",
403 404
"    -hc<cc>,...  specific cost centre(s) (top of stack only)",
"    -hC<cc>,...  specific cost centre(s) (anywhere in stack)",
405 406 407 408 409
"    -hm<mod>...  all cost centres from the specified modules(s)",
"    -hd<des>,... closures with specified closure descriptions",
"    -hy<typ>...  closures with specified type descriptions",
"    -hr<cc>...   closures with specified retainers",
"    -hb<bio>...  closures with specified biographies (lag,drag,void,use)",
410 411
"",
"  -R<size>       Set the maximum retainer set size (default: 8)",
ravi@bluespec.com's avatar
ravi@bluespec.com committed
412 413 414
"", 
"  -L<chars>      Maximum length of a cost-centre stack in a heap profile",
"                 (default: 25)",
415
"",
416 417
"  -xt            Include threads (TSOs) in a heap profile",
"",
418
"  -xc      Show current cost centre stack on raising an exception",
419
"",
420 421
# endif
#endif /* PROFILING or PAR */
422
#if !defined(PROFILING)
423
"",
424
"  -hT      Heap residency profile (output file <program>.hp)",
425
#endif
426
"  -i<sec>  Time between heap samples (seconds, default: 0.1)",
427 428
"",
#if defined(TICKY_TICKY)
429
"  -r<file>  Produce ticky-ticky statistics (with -rstderr for stderr)",
430 431
"",
#endif
432
#if defined(PAR)
433 434
"  -N<n>     Use <n> PVMish processors in parallel (default: 2)",
/* NB: the -N<n> is implemented by the driver!! */
435
#endif
436 437 438
"  -C<secs>  Context-switch interval in seconds.",
"            0 or no argument means switch as often as possible.",
"            Default: 0.02 sec; resolution is set by -V below.",
439
"  -V<secs>  Master tick interval in seconds (0 == disable timer).",
440 441
"            This sets the resolution for -C and the profile timer -i.",
"            Default: 0.02 sec.",
442
"",
Simon Marlow's avatar
Simon Marlow committed
443 444 445
"  -vs       Trace scheduler events (see also -Ds with -debug)",
"  -vt       Time-stamp trace messages",
"",
446 447
#if defined(DEBUG)
"  -Ds  DEBUG: scheduler",
448
"  -Di  DEBUG: interpreter",
449 450 451 452 453 454 455 456 457
"  -Dw  DEBUG: weak",
"  -DG  DEBUG: gccafs",
"  -Dg  DEBUG: gc",
"  -Db  DEBUG: block",
"  -DS  DEBUG: sanity",
"  -Dt  DEBUG: stable",
"  -Dp  DEBUG: prof",
"  -Dr  DEBUG: gran",
"  -DP  DEBUG: par",
458
"  -Da  DEBUG: apply",
459
"  -Dl  DEBUG: linker",
460
"  -Dm  DEBUG: stm",
461
"  -Dz  DEBUG: stack squezing",
462
"  -Dc  DEBUG: program coverage",
463
"",
464
#endif /* DEBUG */
465
#if defined(THREADED_RTS) && !defined(NOSMP)
466 467
"  -N<n>     Use <n> processors (default: 1)",
"  -N        Determine the number of processors to use automatically",
468 469
"  -q1       Use one OS thread for GC (turns off parallel GC)",
"  -qg<n>    Use parallel GC only for generations >= <n> (default: 1)",
470 471
"  -qm       Don't automatically migrate threads between CPUs",
"  -qw       Migrate a thread to the current CPU when it is woken up",
472
#endif
473 474
"  --install-signal-handlers=<yes|no>",
"            Install signal handlers (default: yes)",
475
#if defined(THREADED_RTS) || defined(PAR)
476 477 478
"  -e<size>  Size of spark pools (default 100)",
#endif
#if defined(PAR)
479 480 481 482 483
"  -t<num>   Set maximum number of advisory threads per PE (default 32)",
"  -qP       Enable activity profile (output files in ~/<program>*.gr)",
"  -qQ<size> Set pack-buffer size (default: 1024)",
"  -qd       Turn on PVM-ish debugging",
"  -qO       Disable output for performance measurement",
484
#endif
485
#if defined(THREADED_RTS) || defined(PAR)
486 487
"  -e<n>     Maximum number of outstanding local sparks (default: 4096)",
#endif
488
#if defined(PAR)
489 490
"  -d        Turn on PVM-ish debugging",
"  -O        Disable output for performance measurement",
491 492
#endif /* PAR */
#if defined(GRAN)  /* ToDo: fill in decent Docu here */
493
"  -b...     All GranSim options start with -b; see GranSim User's Guide for details",
494
#endif
495 496 497 498
#if defined(x86_64_HOST_ARCH)
"  -xm       Base address to mmap memory in the GHCi linker",
"            (hex; must be <80000000)",
#endif
499
#if defined(USE_PAPI)
500 501
"  -aX       CPU performance counter measurements using PAPI",
"            (use with the -s<file> option).  X is one of:",
502 503 504 505 506 507
"",
/* "            y - cycles", */
"            1 - level 1 cache misses",
"            2 - level 2 cache misses",
"            b - branch mispredictions",
"            s - stalled cycles",
508
"            e - cache miss and branch misprediction events",
509
#endif
510
"",
511 512
"RTS options may also be specified using the GHCRTS environment variable.",
"",
513 514 515 516 517 518
"Other RTS options may be available for programs compiled a different way.",
"The GHC User's Guide has full details.",
"",
0
};

sof's avatar
sof committed
519
STATIC_INLINE rtsBool
520 521 522 523 524
strequal(const char *a, const char * b)
{
    return(strcmp(a, b) == 0);
}

525 526 527 528 529 530 531 532 533 534 535 536 537 538
static void
splitRtsFlags(char *s, int *rts_argc, char *rts_argv[])
{
    char *c1, *c2;

    c1 = s;
    do {
	while (isspace(*c1)) { c1++; };
	c2 = c1;
	while (!isspace(*c2) && *c2 != '\0') { c2++; };
	
	if (c1 == c2) { break; }
	
	if (*rts_argc < MAX_RTS_ARGS-1) {
sof's avatar
sof committed
539
	    s = stgMallocBytes(c2-c1+1, "RtsFlags.c:splitRtsFlags()");
540 541 542 543 544 545 546 547 548 549 550
	    strncpy(s, c1, c2-c1);
	    s[c2-c1] = '\0';
	    rts_argv[(*rts_argc)++] = s;
	} else {
	    barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
	}
	
	c1 = c2;
    } while (*c1 != '\0');
}
    
551 552 553 554 555 556 557
void
setupRtsFlags(int *argc, char *argv[], int *rts_argc, char *rts_argv[])
{
    rtsBool error = rtsFalse;
    I_ mode;
    I_ arg, total_arg;

558
    setProgName (argv);
559 560 561 562 563 564
    total_arg = *argc;
    arg = 1;

    *argc = 1;
    *rts_argc = 0;

565 566 567 568 569 570 571 572 573
    // process arguments from the ghc_rts_opts global variable first.
    // (arguments from the GHCRTS environment variable and the command
    // line override these).
    {
	if (ghc_rts_opts != NULL) {
	    splitRtsFlags(ghc_rts_opts, rts_argc, rts_argv);
	}
    }

574
    // process arguments from the GHCRTS environment variable next
575
    // (arguments from the command line override these).
576 577 578 579
    {
	char *ghc_rts = getenv("GHCRTS");

	if (ghc_rts != NULL) {
580
	    splitRtsFlags(ghc_rts, rts_argc, rts_argv);
581 582
	}
    }
583

584 585 586
    // Split arguments (argv) into PGM (argv) and RTS (rts_argv) parts
    //   argv[0] must be PGM argument -- leave in argv

587 588 589 590 591 592 593 594 595 596 597 598
    for (mode = PGM; arg < total_arg; arg++) {
	// The '--RTS' argument disables all future +RTS ... -RTS processing.
	if (strequal("--RTS", argv[arg])) {
	    arg++;
	    break;
	}
	// The '--' argument is passed through to the program, but
	// disables all further +RTS ... -RTS processing.
	else if (strequal("--", argv[arg])) {
	    break;
	}
	else if (strequal("+RTS", argv[arg])) {
599 600 601 602 603 604 605 606 607 608 609 610 611 612 613
	    mode = RTS;
	}
	else if (strequal("-RTS", argv[arg])) {
	    mode = PGM;
	}
	else if (mode == RTS && *rts_argc < MAX_RTS_ARGS-1) {
	    rts_argv[(*rts_argc)++] = argv[arg];
	}
	else if (mode == PGM) {
	    argv[(*argc)++] = argv[arg];
	}
	else {
	  barf("too many RTS arguments (max %d)", MAX_RTS_ARGS-1);
	}
    }
614 615 616
    // process remaining program arguments
    for (; arg < total_arg; arg++) {
	argv[(*argc)++] = argv[arg];
617 618 619 620 621
    }
    argv[*argc] = (char *) 0;
    rts_argv[*rts_argc] = (char *) 0;

    // Process RTS (rts_argv) part: mainly to determine statsfile
622 623 624
    for (arg = 0; arg < *rts_argc; arg++) {
	if (rts_argv[arg][0] != '-') {
	    fflush(stdout);
625
	    errorBelch("unexpected RTS argument: %s", rts_argv[arg]);
626 627 628 629 630 631 632 633 634 635
	    error = rtsTrue;

        } else {
	    switch(rts_argv[arg][1]) {

	      /* process: general args, then PROFILING-only ones,
		 then CONCURRENT-only, PARallel-only, GRAN-only,
		 TICKY-only (same order as defined in RtsFlags.lh);
		 within those groups, mostly in case-insensitive
		 alphabetical order.
636
                 Final group is x*, which allows for more options.
637 638 639 640 641 642
	      */

#ifdef TICKY_TICKY
# define TICKY_BUILD_ONLY(x) x
#else
# define TICKY_BUILD_ONLY(x) \
643
errorBelch("not built for: ticky-ticky stats"); \
644 645 646 647 648 649 650
error = rtsTrue;
#endif

#if defined(PROFILING) 
# define COST_CENTRE_USING_BUILD_ONLY(x) x
#else
# define COST_CENTRE_USING_BUILD_ONLY(x) \
651
errorBelch("not built for: -prof or -parallel"); \
652 653 654 655 656 657 658
error = rtsTrue;
#endif

#ifdef PROFILING
# define PROFILING_BUILD_ONLY(x)   x
#else
# define PROFILING_BUILD_ONLY(x) \
659
errorBelch("not built for: -prof"); \
660 661 662
error = rtsTrue;
#endif

663 664 665 666
#ifdef PAR
# define PAR_BUILD_ONLY(x)      x
#else
# define PAR_BUILD_ONLY(x) \
667
errorBelch("not built for: -parallel"); \
668 669 670
error = rtsTrue;
#endif

671 672 673 674 675 676 677 678 679 680
#ifdef THREADED_RTS
# define THREADED_BUILD_ONLY(x)      x
#else
# define THREADED_BUILD_ONLY(x) \
errorBelch("not built for: -smp"); \
error = rtsTrue;
#endif

#if defined(THREADED_RTS) || defined(PAR)
# define PAR_OR_THREADED_BUILD_ONLY(x)      x
681
#else
682
# define PAR_OR_THREADED_BUILD_ONLY(x) \
683
errorBelch("not built for: -parallel or -smp"); \
684 685 686 687 688 689 690
error = rtsTrue;
#endif

#ifdef GRAN
# define GRAN_BUILD_ONLY(x)     x
#else
# define GRAN_BUILD_ONLY(x) \
691
errorBelch("not built for: -gransim"); \
692 693 694 695 696 697 698 699
error = rtsTrue;
#endif

	      /* =========== GENERAL ========================== */
	      case '?':
		error = rtsTrue;
		break;

700 701 702 703 704 705 706 707 708 709 710 711
              /* This isn't going to allow us to keep related options
                 together as we add more --* flags. We really need a
                 proper options parser. */
	      case '-':
                  if (strequal("install-signal-handlers=yes",
                               &rts_argv[arg][2])) {
                      RtsFlags.MiscFlags.install_signal_handlers = rtsTrue;
                  }
                  else if (strequal("install-signal-handlers=no",
                               &rts_argv[arg][2])) {
                      RtsFlags.MiscFlags.install_signal_handlers = rtsFalse;
                  }
Ian Lynagh's avatar
Ian Lynagh committed
712 713 714 715
                  else if (strequal("machine-readable",
                               &rts_argv[arg][2])) {
                      RtsFlags.MiscFlags.machineReadable = rtsTrue;
                  }
716 717
                  else if (strequal("info",
                               &rts_argv[arg][2])) {
718
                      printRtsInfo();
719 720
                      exit(0);
                  }
721 722 723 724 725
                  else {
		      errorBelch("unknown RTS option: %s",rts_argv[arg]);
		      error = rtsTrue;
                  }
		  break;
726 727 728 729 730 731 732 733
	      case 'A':
		RtsFlags.GcFlags.minAllocAreaSize
		  = decode(rts_argv[arg]+2) / BLOCK_SIZE;
		if (RtsFlags.GcFlags.minAllocAreaSize <= 0) {
		  bad_option(rts_argv[arg]);
		}
		break;

734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
#ifdef USE_PAPI
	      case 'a':
		switch(rts_argv[arg][2]) {
		case '1':
		  RtsFlags.PapiFlags.eventType = PAPI_FLAG_CACHE_L1;
		  break;
		case '2':
		  RtsFlags.PapiFlags.eventType = PAPI_FLAG_CACHE_L2;
		  break;
		case 'b':
		  RtsFlags.PapiFlags.eventType = PAPI_FLAG_BRANCH;
		  break;
		case 's':
		  RtsFlags.PapiFlags.eventType = PAPI_FLAG_STALLS;
		  break;
749 750 751
		case 'e':
		  RtsFlags.PapiFlags.eventType = PAPI_FLAG_CB_EVENTS;
		  break;
752 753 754 755 756 757 758 759
                case '+':
                  if (RtsFlags.PapiFlags.numUserEvents >= MAX_PAPI_USER_EVENTS) {
                      errorBelch("maximum number of PAPI events reached");
                      stg_exit(EXIT_FAILURE);
                  }
                  RtsFlags.PapiFlags.eventType = PAPI_USER_EVENTS;
                  RtsFlags.PapiFlags.userEvents[RtsFlags.PapiFlags.numUserEvents++] = rts_argv[arg] + 3;
                  break;
760 761 762 763 764 765
		default:
		  bad_option( rts_argv[arg] );
		}
		break;
#endif

766 767 768 769
	      case 'B':
		RtsFlags.GcFlags.ringBell = rtsTrue;
		break;

770
	      case 'c':
771 772 773 774
		  if (rts_argv[arg][2] != '\0') {
		      RtsFlags.GcFlags.compactThreshold =
			  atof(rts_argv[arg]+2);
		  } else {
775
		      RtsFlags.GcFlags.compact = rtsTrue;
776 777
		  }
		  break;
778

779 780 781 782
              case 'w':
		RtsFlags.GcFlags.sweep = rtsTrue;
		break;

783 784 785 786 787 788 789
	      case 'F':
	        RtsFlags.GcFlags.oldGenFactor = atof(rts_argv[arg]+2);
	      
		if (RtsFlags.GcFlags.oldGenFactor < 0)
		  bad_option( rts_argv[arg] );
		break;
	      
790 791
#ifdef DEBUG
	      case 'D':
792 793 794 795 796 797 798 799
	      { 
		  char *c;

		  for (c  = rts_argv[arg] + 2; *c != '\0'; c++) {
		      switch (*c) {
		      case 's':
			  RtsFlags.DebugFlags.scheduler = rtsTrue;
			  break;
800 801
		      case 'i':
			  RtsFlags.DebugFlags.interpreter = rtsTrue;
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832
			  break;
		      case 'w':
			  RtsFlags.DebugFlags.weak = rtsTrue;
			  break;
		      case 'G':
			  RtsFlags.DebugFlags.gccafs = rtsTrue;
			  break;
		      case 'g':
			  RtsFlags.DebugFlags.gc = rtsTrue;
			  break;
		      case 'b':
			  RtsFlags.DebugFlags.block_alloc = rtsTrue;
			  break;
		      case 'S':
			  RtsFlags.DebugFlags.sanity = rtsTrue;
			  break;
		      case 't':
			  RtsFlags.DebugFlags.stable = rtsTrue;
			  break;
		      case 'p':
			  RtsFlags.DebugFlags.prof = rtsTrue;
			  break;
		      case 'r':
			  RtsFlags.DebugFlags.gran = rtsTrue;
			  break;
		      case 'P':
			  RtsFlags.DebugFlags.par = rtsTrue;
			  break;
		      case 'l':
			  RtsFlags.DebugFlags.linker = rtsTrue;
			  break;
833 834 835
		      case 'a':
			  RtsFlags.DebugFlags.apply = rtsTrue;
			  break;
836 837 838
		      case 'm':
			  RtsFlags.DebugFlags.stm = rtsTrue;
			  break;
839 840 841
		      case 'z':
			  RtsFlags.DebugFlags.squeeze = rtsTrue;
			  break;
842 843 844
		      case 'c':
			  RtsFlags.DebugFlags.hpc = rtsTrue;
			  break;
845 846 847 848 849 850
		      default:
			  bad_option( rts_argv[arg] );
		      }
		  }
		  break;
	      }
851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886
#endif

	      case 'K':
		RtsFlags.GcFlags.maxStkSize = 
		  decode(rts_argv[arg]+2) / sizeof(W_);

		if (RtsFlags.GcFlags.maxStkSize == 0) 
		  bad_option( rts_argv[arg] );
		break;

	      case 'k':
		RtsFlags.GcFlags.initialStkSize = 
		  decode(rts_argv[arg]+2) / sizeof(W_);

		if (RtsFlags.GcFlags.initialStkSize == 0) 
		  bad_option( rts_argv[arg] );
		break;

	      case 'M':
		RtsFlags.GcFlags.maxHeapSize = 
		  decode(rts_argv[arg]+2) / BLOCK_SIZE;
		/* user give size in *bytes* but "maxHeapSize" is in *blocks* */

		if (RtsFlags.GcFlags.maxHeapSize <= 0) {
		  bad_option(rts_argv[arg]);
		}
		break;

	      case 'm':
		RtsFlags.GcFlags.pcFreeHeap = atof(rts_argv[arg]+2);

		if (RtsFlags.GcFlags.pcFreeHeap < 0 || 
		    RtsFlags.GcFlags.pcFreeHeap > 100)
		  bad_option( rts_argv[arg] );
		break;

887 888
	      case 'G':
		RtsFlags.GcFlags.generations = decode(rts_argv[arg]+2);
889
		if (RtsFlags.GcFlags.generations < 1) {
890 891 892 893
		  bad_option(rts_argv[arg]);
		}
		break;

894 895 896 897 898 899 900
	      case 'T':
		RtsFlags.GcFlags.steps = decode(rts_argv[arg]+2);
		if (RtsFlags.GcFlags.steps < 1) {
		  bad_option(rts_argv[arg]);
		}
		break;

901
	      case 'H':
902 903
		RtsFlags.GcFlags.heapSizeSuggestion = 
		  decode(rts_argv[arg]+2) / BLOCK_SIZE;
904 905
		break;

906 907 908 909 910 911
#ifdef RTS_GTK_FRONTPANEL
	      case 'f':
		  RtsFlags.GcFlags.frontpanel = rtsTrue;
		  break;
#endif

912 913 914 915 916 917
    	      case 'I':	/* idle GC delay */
		if (rts_argv[arg][2] == '\0') {
		  /* use default */
		} else {
		    I_ cst; /* tmp */

918
		    /* Convert to millisecs */
919
		    cst = (I_) ((atof(rts_argv[arg]+2) * 1000));
920
		    RtsFlags.GcFlags.idleGCDelayTime = cst;
921 922 923
		}
		break;

924
	      case 'S':
925 926
		  RtsFlags.GcFlags.giveStats = VERBOSE_GC_STATS;
		  goto stats;
927

928
	      case 's':
929 930
		  RtsFlags.GcFlags.giveStats = SUMMARY_GC_STATS;
		  goto stats;
931 932

	      case 't':
933 934
		  RtsFlags.GcFlags.giveStats = ONELINE_GC_STATS;
		  goto stats;
935

936
	    stats:
937
#ifdef PAR
938 939
		/* Opening all those files would almost certainly fail... */
		// RtsFlags.ParFlags.ParStats.Full = rtsTrue;
940
		RtsFlags.GcFlags.statsFile = NULL; /* temporary; ToDo: rm */
941
#else
942 943 944
		{ 
		    int r;
		    r = open_stats_file(arg, *argc, argv,
945
					*rts_argc, rts_argv, NULL,
946 947 948
					&RtsFlags.GcFlags.statsFile);
		    if (r == -1) { error = rtsTrue; }
		}
949
#endif
950
		  break;
951 952 953 954 955 956 957 958 959 960 961

	      case 'Z':
		RtsFlags.GcFlags.squeezeUpdFrames = rtsFalse;
		break;

	      /* =========== PROFILING ========================== */

	      case 'P': /* detailed cost centre profiling (time/alloc) */
	      case 'p': /* cost centre profiling (time/alloc) */
		COST_CENTRE_USING_BUILD_ONLY(
		switch (rts_argv[arg][2]) {
962 963
		  case 'x':
		    RtsFlags.CcFlags.doCostCentres = COST_CENTRES_XML;
964
		    break;
andy's avatar
andy committed
965 966 967
		  case 'a':
		    RtsFlags.CcFlags.doCostCentres = COST_CENTRES_ALL;
		    break;
968
		  default:
969 970 971 972 973 974 975 976
		      if (rts_argv[arg][1] == 'P') {
			  RtsFlags.CcFlags.doCostCentres =
			      COST_CENTRES_VERBOSE;
		      } else {
			  RtsFlags.CcFlags.doCostCentres =
			      COST_CENTRES_SUMMARY;
		      }
		      break;
977 978 979
		}
		) break;

980 981 982 983
	      case 'R':
		  PROFILING_BUILD_ONLY(
		      RtsFlags.ProfFlags.maxRetainerSetSize = atof(rts_argv[arg]+2);
  	          ) break;
ravi@bluespec.com's avatar
ravi@bluespec.com committed
984 985 986 987 988 989 990
	      case 'L':
		  PROFILING_BUILD_ONLY(
		      RtsFlags.ProfFlags.ccsLength = atof(rts_argv[arg]+2);
                      if(RtsFlags.ProfFlags.ccsLength <= 0) {
			bad_option(rts_argv[arg]);
                      }
		  ) break;
991
	      case 'h': /* serial heap profile */
992
#if !defined(PROFILING)
993 994 995 996 997 998
		switch (rts_argv[arg][2]) {
		  case '\0':
		  case 'T':
		    RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE;
		    break;
		  default:
999
		    errorBelch("invalid heap profile option: %s",rts_argv[arg]);
1000 1001 1002 1003 1004
		    error = rtsTrue;
		}
#else
		PROFILING_BUILD_ONLY(
		switch (rts_argv[arg][2]) {
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
		case '\0':
		case 'C':
		case 'c':
		case 'M':
		case 'm':
		case 'D':
		case 'd':
		case 'Y':
		case 'y':
		case 'R':
		case 'r':
		case 'B':
		case 'b':
		    if (rts_argv[arg][2] != '\0' && rts_argv[arg][3] != '\0') {
			{
			    char *left  = strchr(rts_argv[arg], '{');
			    char *right = strrchr(rts_argv[arg], '}');
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038

			    // curly braces are optional, for
			    // backwards compat.
			    if (left)
				left = left+1;
			    else
				left = rts_argv[arg] + 3;

			    if (!right)
				right = rts_argv[arg] + strlen(rts_argv[arg]);

			    *right = '\0';

			    switch (rts_argv[arg][2]) {
			    case 'c': // cost centre label select
				RtsFlags.ProfFlags.ccSelector = left;
				break;
1039 1040 1041
			    case 'C':
				RtsFlags.ProfFlags.ccsSelector = left;
				break;
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
			    case 'M':
			    case 'm': // cost centre module select
				RtsFlags.ProfFlags.modSelector = left;
				break;
			    case 'D':
			    case 'd': // closure descr select 
				RtsFlags.ProfFlags.descrSelector = left;
				break;
			    case 'Y':
			    case 'y': // closure type select
				RtsFlags.ProfFlags.typeSelector = left;
				break;
			    case 'R':
			    case 'r': // retainer select
				RtsFlags.ProfFlags.retainerSelector = left;
				break;
			    case 'B':
			    case 'b': // biography select
				RtsFlags.ProfFlags.bioSelector = left;
				break;
1062 1063 1064 1065
			    }
			}
			break;
		    }
1066

1067
		    if (RtsFlags.ProfFlags.doHeapProfile != 0) {
1068
			errorBelch("multiple heap profile options");
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
			error = rtsTrue;
			break;
		    }

		    switch (rts_argv[arg][2]) {
		    case '\0':
		    case 'C':
		    case 'c':
			RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CCS;
			break;
		    case 'M':
		    case 'm':
1081 1082
			  RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_MOD;
			  break;
1083 1084
		    case 'D':
		    case 'd':
1085 1086
			  RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_DESCR;
			  break;
1087 1088
		    case 'Y':
		    case 'y':
1089 1090
			  RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_TYPE;
			  break;
1091 1092
		    case 'R':
		    case 'r':
1093 1094
			  RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_RETAINER;
			  break;
1095 1096
		    case 'B':
		    case 'b':
1097 1098
			  RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_LDV;
			  break;
1099 1100
		    }
		    break;
1101
		      
1102
		default:
1103
		    errorBelch("invalid heap profile option: %s",rts_argv[arg]);
1104