Commit b9d8ddb9 authored by simonmar's avatar simonmar

[project @ 2000-04-03 15:54:49 by simonmar]

misc profiling cleanups
parent ab9349b0
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Stg.h,v 1.24 2000/03/14 01:54:06 sof Exp $ * $Id: Stg.h,v 1.25 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998-1999 * (c) The GHC Team, 1998-1999
* *
...@@ -109,7 +109,7 @@ void _stgAssert (char *, unsigned int); ...@@ -109,7 +109,7 @@ void _stgAssert (char *, unsigned int);
#include "Constants.h" #include "Constants.h"
/* Profiling information */ /* Profiling information */
#include "Profiling.h" #include "StgProf.h"
/* Storage format definitions */ /* Storage format definitions */
#include "Closures.h" #include "Closures.h"
...@@ -163,7 +163,6 @@ void _stgAssert (char *, unsigned int); ...@@ -163,7 +163,6 @@ void _stgAssert (char *, unsigned int);
#include "ClosureMacros.h" #include "ClosureMacros.h"
#include "InfoMacros.h" #include "InfoMacros.h"
#include "StgMacros.h" #include "StgMacros.h"
#include "StgProf.h"
#include "PrimOps.h" #include "PrimOps.h"
#include "Updates.h" #include "Updates.h"
#include "StgTicky.h" #include "StgTicky.h"
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: StgProf.h,v 1.8 2000/03/08 17:48:26 simonmar Exp $ * $Id: StgProf.h,v 1.9 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998 * (c) The GHC Team, 1998
* *
...@@ -9,8 +9,124 @@ ...@@ -9,8 +9,124 @@
#ifndef STGPROF_H #ifndef STGPROF_H
#define STGPROF_H #define STGPROF_H
#if defined(PROFILING) #if !defined(PROFILING)
#define CCS_ALLOC(ccs, amount) doNothing()
#define ENTER_CC_PAP_CL(r) doNothing()
#define ENTER_CCS_PAP_CL(r) doNothing()
#else /* PROFILING... */
/* -----------------------------------------------------------------------------
* Constants
* ---------------------------------------------------------------------------*/
#define EMPTY_STACK NULL
#define EMPTY_TABLE NULL
/* Constants used to set sumbsumed flag on CostCentres */
#define CC_IS_CAF 'c' /* 'c' => *is* a CAF cc */
#define CC_IS_BORING 'B' /* 'B' => *not* a CAF/sub cc */
/* -----------------------------------------------------------------------------
* Data Structures
* ---------------------------------------------------------------------------*/
/*
* CostCentre
*/
typedef struct _CostCentre {
int ccID;
char *label;
char *module;
/* used for accumulating costs at the end of the run... */
unsigned long time_ticks;
unsigned long mem_alloc;
char is_caf;
struct _CostCentre *link;
} CostCentre;
/*
* CostCentreStack
*/
typedef struct _CostCentreStack {
int ccsID;
CostCentre *cc;
struct _CostCentreStack *prevStack;
struct _IndexTable *indexTable;
unsigned long scc_count;
unsigned long sub_scc_count;
unsigned long sub_cafcc_count;
unsigned long time_ticks;
unsigned long mem_alloc;
unsigned long mem_resid;
CostCentre *root;
} CostCentreStack;
/*
* IndexTable
*/
typedef struct _IndexTable {
CostCentre *cc;
CostCentreStack *ccs;
struct _IndexTable *next;
unsigned int back_edge;
} IndexTable;
/* -----------------------------------------------------------------------------
Pre-defined cost centres and cost centre stacks
-------------------------------------------------------------------------- */
extern CostCentreStack *CCCS; /* current CCS */
extern CostCentre CC_MAIN[];
extern CostCentreStack CCS_MAIN[]; /* Top CCS */
extern CostCentre CC_SYSTEM[];
extern CostCentreStack CCS_SYSTEM[]; /* RTS costs */
extern CostCentre CC_GC[];
extern CostCentreStack CCS_GC[]; /* Garbage collector costs */
extern CostCentre CC_SUBSUMED[];
extern CostCentreStack CCS_SUBSUMED[]; /* Costs are subsumed by caller */
extern CostCentre CC_OVERHEAD[];
extern CostCentreStack CCS_OVERHEAD[]; /* Profiling overhead */
extern CostCentre CC_DONT_CARE[];
extern CostCentreStack CCS_DONT_CARE[]; /* shouldn't ever get set */
extern unsigned int CC_ID; /* global ids */
extern unsigned int CCS_ID;
extern unsigned int HP_ID;
/* -----------------------------------------------------------------------------
* Functions
* ---------------------------------------------------------------------------*/
CostCentreStack *EnterFunCCS ( CostCentreStack *cccs, CostCentreStack *ccsfn );
CostCentreStack *PushCostCentre ( CostCentreStack *, CostCentre * );
CostCentreStack *AppendCCS ( CostCentreStack *ccs1, CostCentreStack *ccs2 );
extern unsigned int entering_PAP;
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* Registering CCs * Registering CCs
...@@ -59,17 +175,17 @@ extern CostCentreStack *CCS_LIST; /* registered CCS list */ ...@@ -59,17 +175,17 @@ extern CostCentreStack *CCS_LIST; /* registered CCS list */
* Declaring Cost Centres & Cost Centre Stacks. * Declaring Cost Centres & Cost Centre Stacks.
* -------------------------------------------------------------------------- */ * -------------------------------------------------------------------------- */
# define CC_DECLARE(cc_ident,name,module,subsumed,is_local) \ # define CC_DECLARE(cc_ident,name,module,caf,is_local) \
is_local CostCentre cc_ident[1] \ is_local CostCentre cc_ident[1] \
= {{ 0, \ = {{ 0, \
name, \ name, \
module, \ module, \
0, \ 0, \
0, \ 0, \
subsumed, \ caf, \
0 }}; 0 }};
# define CCS_DECLARE(ccs_ident,cc_ident,subsumed,is_local) \ # define CCS_DECLARE(ccs_ident,cc_ident,is_local) \
is_local CostCentreStack ccs_ident[1] \ is_local CostCentreStack ccs_ident[1] \
= {{ ccsID : 0, \ = {{ ccsID : 0, \
cc : cc_ident, \ cc : cc_ident, \
...@@ -166,11 +282,6 @@ extern CostCentreStack *CCS_LIST; /* registered CCS list */ ...@@ -166,11 +282,6 @@ extern CostCentreStack *CCS_LIST; /* registered CCS list */
#define CCCS_DETAIL_COUNT(inc_this) /*nothing*/ #define CCCS_DETAIL_COUNT(inc_this) /*nothing*/
#endif #endif
#define IS_CAF_OR_SUB_CCS(ccs) \
/* tests for lower case character */ \
((ccs)->is_subsumed & ' ')
/* On entry to top level CAFs we count the scc ...*/ /* On entry to top level CAFs we count the scc ...*/
#define ENTER_CCS_CAF_X(ccs) \ #define ENTER_CCS_CAF_X(ccs) \
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Itimer.c,v 1.12 2000/03/21 11:33:12 rrt Exp $ * $Id: Itimer.c,v 1.13 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1995-1999 * (c) The GHC Team, 1995-1999
* *
...@@ -24,6 +24,7 @@ ...@@ -24,6 +24,7 @@
#include "Rts.h" #include "Rts.h"
#include "Itimer.h" #include "Itimer.h"
#include "Proftimer.h"
#include "Schedule.h" #include "Schedule.h"
/* As recommended in the autoconf manual */ /* As recommended in the autoconf manual */
...@@ -43,7 +44,6 @@ ...@@ -43,7 +44,6 @@
#endif #endif
lnat total_ticks = 0; lnat total_ticks = 0;
rtsBool do_prof_ticks = rtsFalse;
static static
void void
...@@ -73,9 +73,7 @@ handle_tick(int unused STG_UNUSED) ...@@ -73,9 +73,7 @@ handle_tick(int unused STG_UNUSED)
total_ticks++; total_ticks++;
#ifdef PROFILING #ifdef PROFILING
if (do_prof_ticks == rtsTrue) { handleProfTick();
CCS_TICK(CCCS);
}
#endif #endif
/* For threadDelay etc., see Select.c */ /* For threadDelay etc., see Select.c */
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: ProfHeap.c,v 1.9 2000/03/31 03:09:36 hwloidl Exp $ * $Id: ProfHeap.c,v 1.10 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998-2000 * (c) The GHC Team, 1998-2000
* *
...@@ -18,11 +18,10 @@ ...@@ -18,11 +18,10 @@
#include "Rts.h" #include "Rts.h"
#include "RtsUtils.h" #include "RtsUtils.h"
#include "RtsFlags.h" #include "RtsFlags.h"
#include "ProfRts.h" #include "Profiling.h"
#include "Storage.h" #include "Storage.h"
#include "ProfHeap.h" #include "ProfHeap.h"
#include "Stats.h" #include "Stats.h"
#include "ProfRts.h"
#ifdef DEBUG_HEAP_PROF #ifdef DEBUG_HEAP_PROF
#include "Printer.h" #include "Printer.h"
static void initSymbolHash(void); static void initSymbolHash(void);
...@@ -286,7 +285,7 @@ fprint_ccs(FILE *fp, CostCentreStack *ccs, nat components) ...@@ -286,7 +285,7 @@ fprint_ccs(FILE *fp, CostCentreStack *ccs, nat components)
prev = ccs->prevStack; prev = ccs->prevStack;
if (prev == NULL if (prev == NULL
|| prev->cc->is_subsumed != CC_IS_BORING || prev->cc->is_caf != CC_IS_BORING
|| components == 1) { || components == 1) {
fprintf(fp,"%s",cc->label); fprintf(fp,"%s",cc->label);
return; return;
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Profiling.c,v 1.16 2000/03/08 17:48:24 simonmar Exp $ * $Id: Profiling.c,v 1.17 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998-2000 * (c) The GHC Team, 1998-2000
* *
...@@ -12,7 +12,7 @@ ...@@ -12,7 +12,7 @@
#include "Rts.h" #include "Rts.h"
#include "RtsUtils.h" #include "RtsUtils.h"
#include "RtsFlags.h" #include "RtsFlags.h"
#include "ProfRts.h" #include "Profiling.h"
#include "Storage.h" #include "Storage.h"
#include "Proftimer.h" #include "Proftimer.h"
#include "Itimer.h" #include "Itimer.h"
...@@ -81,25 +81,26 @@ CostCentreStack *CCS_LIST; ...@@ -81,25 +81,26 @@ CostCentreStack *CCS_LIST;
* SUBSUMED is the one-and-only CCS placed on top-level functions. * SUBSUMED is the one-and-only CCS placed on top-level functions.
* It indicates that all costs are to be attributed to the * It indicates that all costs are to be attributed to the
* enclosing cost centre stack. SUBSUMED never accumulates * enclosing cost centre stack. SUBSUMED never accumulates
* any costs. * any costs. The is_caf flag is set on the subsumed cost
* centre.
* *
* DONT_CARE is a placeholder cost-centre we assign to static * DONT_CARE is a placeholder cost-centre we assign to static
* constructors. It should *never* accumulate any costs. * constructors. It should *never* accumulate any costs.
*/ */
CC_DECLARE(CC_MAIN, "MAIN", "MAIN", CC_IS_BORING,); CC_DECLARE(CC_MAIN, "MAIN", "MAIN", CC_IS_BORING, );
CC_DECLARE(CC_SYSTEM, "SYSTEM", "MAIN", CC_IS_BORING,); CC_DECLARE(CC_SYSTEM, "SYSTEM", "MAIN", CC_IS_BORING, );
CC_DECLARE(CC_GC, "GC", "GC", CC_IS_BORING,); CC_DECLARE(CC_GC, "GC", "GC", CC_IS_BORING, );
CC_DECLARE(CC_OVERHEAD, "OVERHEAD_of", "PROFILING", CC_IS_CAF,); CC_DECLARE(CC_OVERHEAD, "OVERHEAD_of", "PROFILING", CC_IS_CAF, );
CC_DECLARE(CC_SUBSUMED, "SUBSUMED", "MAIN", CC_IS_SUBSUMED,); CC_DECLARE(CC_SUBSUMED, "SUBSUMED", "MAIN", CC_IS_CAF, );
CC_DECLARE(CC_DONTZuCARE,"DONT_CARE", "MAIN", CC_IS_BORING,); CC_DECLARE(CC_DONT_CARE, "DONT_CARE", "MAIN", CC_IS_BORING, );
CCS_DECLARE(CCS_MAIN, CC_MAIN, CC_IS_BORING, ); CCS_DECLARE(CCS_MAIN, CC_MAIN, );
CCS_DECLARE(CCS_SYSTEM, CC_SYSTEM, CC_IS_BORING, ); CCS_DECLARE(CCS_SYSTEM, CC_SYSTEM, );
CCS_DECLARE(CCS_GC, CC_GC, CC_IS_BORING, ); CCS_DECLARE(CCS_GC, CC_GC, );
CCS_DECLARE(CCS_OVERHEAD, CC_OVERHEAD, CC_IS_CAF, ); CCS_DECLARE(CCS_OVERHEAD, CC_OVERHEAD, );
CCS_DECLARE(CCS_SUBSUMED, CC_SUBSUMED, CC_IS_SUBSUMED, ); CCS_DECLARE(CCS_SUBSUMED, CC_SUBSUMED, );
CCS_DECLARE(CCS_DONTZuCARE, CC_DONTZuCARE, CC_IS_BORING, ); CCS_DECLARE(CCS_DONT_CARE, CC_DONT_CARE, );
/* /*
* Uniques for the XML log-file format * Uniques for the XML log-file format
...@@ -166,13 +167,13 @@ initProfiling1 (void) ...@@ -166,13 +167,13 @@ initProfiling1 (void)
REGISTER_CC(CC_GC); REGISTER_CC(CC_GC);
REGISTER_CC(CC_OVERHEAD); REGISTER_CC(CC_OVERHEAD);
REGISTER_CC(CC_SUBSUMED); REGISTER_CC(CC_SUBSUMED);
REGISTER_CC(CC_DONTZuCARE); REGISTER_CC(CC_DONT_CARE);
REGISTER_CCS(CCS_MAIN); REGISTER_CCS(CCS_MAIN);
REGISTER_CCS(CCS_SYSTEM); REGISTER_CCS(CCS_SYSTEM);
REGISTER_CCS(CCS_GC); REGISTER_CCS(CCS_GC);
REGISTER_CCS(CCS_OVERHEAD); REGISTER_CCS(CCS_OVERHEAD);
REGISTER_CCS(CCS_SUBSUMED); REGISTER_CCS(CCS_SUBSUMED);
REGISTER_CCS(CCS_DONTZuCARE); REGISTER_CCS(CCS_DONT_CARE);
CCCS = CCS_OVERHEAD; CCCS = CCS_OVERHEAD;
...@@ -279,8 +280,7 @@ EnterFunCCS ( CostCentreStack *cccs, CostCentreStack *ccsfn ) ...@@ -279,8 +280,7 @@ EnterFunCCS ( CostCentreStack *cccs, CostCentreStack *ccsfn )
return CCCS; return CCCS;
} }
if (ccsfn->root->is_subsumed == CC_IS_CAF if (ccsfn->root->is_caf == CC_IS_CAF) {
|| ccsfn->root->is_subsumed == CC_IS_SUBSUMED) {
return AppendCCS(cccs,ccsfn); return AppendCCS(cccs,ccsfn);
} else { } else {
return ccsfn; return ccsfn;
...@@ -378,7 +378,7 @@ AppendCCS ( CostCentreStack *ccs1, CostCentreStack *ccs2 ) ...@@ -378,7 +378,7 @@ AppendCCS ( CostCentreStack *ccs1, CostCentreStack *ccs2 )
return ccs1; return ccs1;
} }
if (ccs2->cc->is_subsumed != CC_IS_BORING) { if (ccs2->cc->is_caf == CC_IS_CAF) {
return ccs1; return ccs1;
} }
...@@ -749,7 +749,7 @@ static rtsBool ...@@ -749,7 +749,7 @@ static rtsBool
ccs_to_ignore (CostCentreStack *ccs) ccs_to_ignore (CostCentreStack *ccs)
{ {
if ( ccs == CCS_OVERHEAD if ( ccs == CCS_OVERHEAD
|| ccs == CCS_DONTZuCARE || ccs == CCS_DONT_CARE
|| ccs == CCS_GC || ccs == CCS_GC
|| ccs == CCS_SYSTEM) { || ccs == CCS_SYSTEM) {
return rtsTrue; return rtsTrue;
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: ProfRts.h,v 1.10 2000/03/08 17:48:24 simonmar Exp $ * $Id: Profiling.h,v 1.1 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998-2000 * (c) The GHC Team, 1998-2000
* *
......
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Proftimer.c,v 1.5 1999/08/25 16:11:49 simonmar Exp $ * $Id: Proftimer.c,v 1.6 2000/04/03 15:54:49 simonmar Exp $
* *
* (c) The GHC Team, 1998-1999 * (c) The GHC Team, 1998-1999
* *
...@@ -7,37 +7,36 @@ ...@@ -7,37 +7,36 @@
* *
* ---------------------------------------------------------------------------*/ * ---------------------------------------------------------------------------*/
/* Only have cost centres etc if PROFILING defined */
#if defined (PROFILING) #if defined (PROFILING)
#include "Rts.h" #include "Rts.h"
#include "ProfRts.h" #include "Profiling.h"
#include "Itimer.h" #include "Itimer.h"
#include "Proftimer.h" #include "Proftimer.h"
nat current_interval = 1; /* Current interval number -- rtsBool do_prof_ticks = rtsFalse; /* enable profiling ticks */
stored in AGE */
nat interval_ticks = DEFAULT_INTERVAL; /* No of ticks in an interval */
nat previous_ticks = 0; /* ticks in previous intervals */
nat current_ticks = 0; /* ticks in current interval */
void void
stopProfTimer(void) stopProfTimer(void)
{ /* Stops time profile */ { /* Stops time profile */
if (time_profiling) { if (time_profiling) {
do_prof_ticks = rtsFalse; do_prof_ticks = rtsFalse;
} }
}; };
void void
startProfTimer(void) startProfTimer(void)
{ /* Starts time profile */ { /* Starts time profile */
if (time_profiling) { if (time_profiling) {
do_prof_ticks = rtsTrue; do_prof_ticks = rtsTrue;
} }
}; };
void
handleProfTick(void)
{
if (do_prof_ticks) {
CCS_TICK(CCCS);
}
}
#endif /* PROFILING */ #endif /* PROFILING */
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: Proftimer.h,v 1.4 1999/08/25 16:11:50 simonmar Exp $ * $Id: Proftimer.h,v 1.5 2000/04/03 15:54:50 simonmar Exp $
* *
* (c) The GHC Team, 1998 * (c) The GHC Team, 1998
* *
...@@ -7,10 +7,10 @@ ...@@ -7,10 +7,10 @@
* *
* ---------------------------------------------------------------------------*/ * ---------------------------------------------------------------------------*/
extern rtsBool do_prof_ticks;
extern lnat total_prof_ticks; extern lnat total_prof_ticks;
extern void initProfTimer(nat ms); extern void initProfTimer(nat ms);
extern void stopProfTimer(void); extern void stopProfTimer(void);
extern void startProfTimer(void); extern void startProfTimer(void);
extern void handleProfTick(int unused); extern void handleProfTick(void);
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* $Id: RtsFlags.c,v 1.28 2000/03/31 03:09:36 hwloidl Exp $ * $Id: RtsFlags.c,v 1.29 2000/04/03 15:54:50 simonmar Exp $
* *
* (c) The AQUA Project, Glasgow University, 1994-1997 * (c) The AQUA Project, Glasgow University, 1994-1997
* (c) The GHC Team, 1998-1999 * (c) The GHC Team, 1998-1999
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
#include "RtsFlags.h" #include "RtsFlags.h"
#include "RtsUtils.h" #include "RtsUtils.h"
#include "BlockAlloc.h" #include "BlockAlloc.h"
#include "ProfRts.h" #include "Profiling.h"
#if defined(PROFILING) #if defined(PROFILING)
#include "Itimer.h" #include "Itimer.h"
...@@ -200,8 +200,10 @@ static void process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool ...@@ -200,8 +200,10 @@ static void process_par_option(int arg, int *rts_argc, char *rts_argv[], rtsBool
static void set_par_debug_options(nat n); static void set_par_debug_options(nat n);
static void help_par_debug_options(nat n); static void help_par_debug_options(nat n);
#endif #endif
#if defined(DEBUG)
static void set_debug_options(nat n); static void set_debug_options(nat n);
static void help_debug_options(nat n); static void help_debug_options(nat n);
#endif
//@node Command-line option parsing routines, GranSim specific options, Static function decls //@node Command-line option parsing routines, GranSim specific options, Static function decls
//@subsection Command-line option parsing routines //@subsection Command-line option parsing routines
...@@ -227,10 +229,6 @@ void initRtsFlagsDefaults(void) ...@@ -227,10 +229,6 @@ void initRtsFlagsDefaults(void)
RtsFlags.GcFlags.generations = 2; RtsFlags.GcFlags.generations = 2;
RtsFlags.GcFlags.steps = 2; RtsFlags.GcFlags.steps = 2;
RtsFlags.GcFlags.forceGC = rtsFalse;
RtsFlags.GcFlags.forcingInterval = 5000000; /* 5MB (or words?) */
RtsFlags.GcFlags.ringBell = rtsFalse;
RtsFlags.GcFlags.squeezeUpdFrames = rtsTrue; RtsFlags.GcFlags.squeezeUpdFrames = rtsTrue;
#if defined(PROFILING) || defined(PAR) #if defined(PROFILING) || defined(PAR)
...@@ -382,37 +380,19 @@ usage_text[] = { ...@@ -382,37 +380,19 @@ usage_text[] = {
" -B Sound the bell at the start of each garbage collection", " -B Sound the bell at the start of each garbage collection",
#if defined(PROFILING) || defined(PAR) #if defined(PROFILING) || defined(PAR)
"", "",
" -p<sort> Produce cost centre time profile (output file <program>.prof)", " -px Time/allocation profile (XML) (output file <program>.prof)",
" -p<sort> Time/allocation profile (output file <program>.prof)",
" sort: T = time (default), A = alloc, C = cost centre label", " sort: T = time (default), A = alloc, C = cost centre label",
" -P<sort> Produce serial time profile (output file <program>.time)", " -P<sort> More detailed Time/Allocation profile"
" and a -p profile with detailed tick/alloc info",
# if defined(PROFILING) # if defined(PROFILING)
"", "",
" -h<break-down> Heap residency profile (output file <program>.hp)", " -hx Heap residency profile (XML) (output file <program>.prof)",
" -h<break-down> Heap residency profile (text) (output file <program>.prof)",
" break-down: C = cost centre stack (default), M = module", " break-down: C = cost centre stack (default), M = module",
" D = closure description, Y = type description", " D = closure description, Y = type description",
" T<ints>,<start> = time closure created",
" ints: no. of interval bands plotted (default 18)",
" start: seconds after which intervals start (default 0.0)",
" A subset of closures may be selected by the attached cost centre using:",
" -c{mod:lab,mod:lab...}, specific module:label cost centre(s)",
" -m{mod,mod...} all cost centres from the specified modules(s)",
" Selections can also be made by description, type, kind and age:",
" -d{des,des...} closures with specified closure descriptions",
" -y{typ,typ...} closures with specified type descriptions",
" -k{knd,knd...} closures of the specified kinds",
" -a<age> closures which survived <age> complete intervals",
" The selection logic used is summarised as follows:",
" ([-c] or [-m] or [-g]) and ([-d] or [-y] or [-k]) and [-a]",
" where an option is true if not specified",
"", "",
" -xc Show current cost centre stack on raising an exception", " -xc Show current cost centre stack on raising an exception",
# endif # endif
"",
" -z<tbl><size> set hash table <size> for <tbl> (C, M, G, D or Y)",
"",
" -i<secs> Number of seconds in a profiling interval (default 1.0):",