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gnulib: move timevar to it

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* lib/timevar.c, lib/timevar.h, m4/timevar.m4: Remove.
* gnulib: Update.
* configure.ac: Adjust.
* lib/timevar.def: Use lower case for the timevvars.
Adjust dependencies.
This commit is contained in:
Akim Demaille
2018-09-27 07:01:42 +02:00
parent 4247df921b
commit f84a8e96d1
12 changed files with 68 additions and 698 deletions
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2
lib/.gitignore vendored
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@@ -273,3 +273,5 @@
/xstrndup.h
/stat-time.c
/stat-time.h
/timevar.c
/timevar.h

451
lib/timevar.c
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@@ -1,451 +0,0 @@
/* Timing variables for measuring compiler performance.
Copyright (C) 2000, 2002, 2004, 2006, 2009-2015, 2018 Free Software
Foundation, Inc.
Contributed by Alex Samuel <samuel@codesourcery.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* This source file was taken from the GCC source code. */
#include "../src/system.h"
#if HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif
#ifndef HAVE_CLOCK_T
typedef int clock_t;
#endif
#ifndef HAVE_STRUCT_TMS
struct tms
{
clock_t tms_utime;
clock_t tms_stime;
clock_t tms_cutime;
clock_t tms_cstime;
};
#endif
/* Calculation of scale factor to convert ticks to microseconds.
We mustn't use CLOCKS_PER_SEC except with clock(). */
#if HAVE_SYSCONF && defined _SC_CLK_TCK
# define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */
#elif defined CLK_TCK
# define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */
#elif defined HZ
# define TICKS_PER_SECOND HZ /* traditional UNIX */
#else
# define TICKS_PER_SECOND 100 /* often the correct value */
#endif
/* Prefer times to getrusage to clock (each gives successively less
information). */
#if defined HAVE_TIMES
# define USE_TIMES
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
# define HAVE_WALL_TIME
#elif defined HAVE_GETRUSAGE
# define USE_GETRUSAGE
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
#elif defined HAVE_CLOCK
# define USE_CLOCK
# define HAVE_USER_TIME
#endif
#if defined USE_TIMES && !defined HAVE_DECL_TIMES
clock_t times (struct tms *);
#elif defined USE_GETRUSAGE && !defined HAVE_DECL_GETRUSAGE
int getrusage (int, struct rusage *);
#elif defined USE_CLOCK && !defined HAVE_DECL_CLOCK
clock_t clock (void);
#endif
/* libc is very likely to have snuck a call to sysconf() into one of
the underlying constants, and that can be very slow, so we have to
precompute them. Whose wonderful idea was it to make all those
_constants_ variable at run time, anyway? */
#ifdef USE_TIMES
static float ticks_to_msec;
# define TICKS_TO_MSEC (1.0 / TICKS_PER_SECOND)
#elif defined USE_CLOCK
static float clocks_to_msec;
# define CLOCKS_TO_MSEC (1.0 / CLOCKS_PER_SEC)
#endif
#include "timevar.h"
/* See timevar.h for an explanation of timing variables. */
int timevar_enabled = 0;
/* A timing variable. */
struct timevar_def
{
/* Elapsed time for this variable. */
struct timevar_time_def elapsed;
/* If this variable is timed independently of the timing stack,
using timevar_start, this contains the start time. */
struct timevar_time_def start_time;
/* The name of this timing variable. */
const char *name;
/* Non-zero if this timing variable is running as a standalone
timer. */
unsigned standalone : 1;
/* Non-zero if this timing variable was ever started or pushed onto
the timing stack. */
unsigned used : 1;
};
/* An element on the timing stack. Elapsed time is attributed to the
topmost timing variable on the stack. */
struct timevar_stack_def
{
/* The timing variable at this stack level. */
struct timevar_def *timevar;
/* The next lower timing variable context in the stack. */
struct timevar_stack_def *next;
};
/* Declared timing variables. Constructed from the contents of
timevar.def. */
static struct timevar_def timevars[TIMEVAR_LAST];
/* The top of the timing stack. */
static struct timevar_stack_def *stack;
/* A list of unused (i.e. allocated and subsequently popped)
timevar_stack_def instances. */
static struct timevar_stack_def *unused_stack_instances;
/* The time at which the topmost element on the timing stack was
pushed. Time elapsed since then is attributed to the topmost
element. */
static struct timevar_time_def start_time;
/* Fill the current times into TIME. The definition of this function
also defines any or all of the HAVE_USER_TIME, HAVE_SYS_TIME, and
HAVE_WALL_TIME macros. */
static void
set_to_current_time (struct timevar_time_def *now)
{
now->user = 0;
now->sys = 0;
now->wall = 0;
if (!timevar_enabled)
return;
{
#ifdef USE_TIMES
struct tms tms;
now->wall = times (&tms) * ticks_to_msec;
now->user = (tms.tms_utime + tms.tms_cutime) * ticks_to_msec;
now->sys = (tms.tms_stime + tms.tms_cstime) * ticks_to_msec;
#elif defined USE_GETRUSAGE
struct rusage rusage;
getrusage (RUSAGE_CHILDREN, &rusage);
now->user = rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec * 1e-6;
now->sys = rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec * 1e-6;
#elif defined USE_CLOCK
now->user = clock () * clocks_to_msec;
#endif
}
}
/* Return the current time. */
static struct timevar_time_def
get_current_time (void)
{
struct timevar_time_def now;
set_to_current_time (&now);
return now;
}
/* Add the difference between STOP and START to TIMER. */
static void
timevar_accumulate (struct timevar_time_def *timer,
const struct timevar_time_def *start,
const struct timevar_time_def *stop)
{
timer->user += stop->user - start->user;
timer->sys += stop->sys - start->sys;
timer->wall += stop->wall - start->wall;
}
void
timevar_init ()
{
if (!timevar_enabled)
return;
/* Zero all elapsed times. */
memset ((void *) timevars, 0, sizeof (timevars));
/* Initialize the names of timing variables. */
#define DEFTIMEVAR(identifier__, name__) \
timevars[identifier__].name = name__;
#include "timevar.def"
#undef DEFTIMEVAR
#if defined USE_TIMES
ticks_to_msec = TICKS_TO_MSEC;
#elif defined USE_CLOCK
clocks_to_msec = CLOCKS_TO_MSEC;
#endif
}
void
timevar_push (timevar_id_t timevar)
{
if (!timevar_enabled)
return;
struct timevar_def *tv = &timevars[timevar];
/* Mark this timing variable as used. */
tv->used = 1;
/* Can't push a standalone timer. */
if (tv->standalone)
abort ();
/* What time is it? */
struct timevar_time_def const now = get_current_time ();
/* If the stack isn't empty, attribute the current elapsed time to
the old topmost element. */
if (stack)
timevar_accumulate (&stack->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to
TIMEVAR. */
start_time = now;
/* See if we have a previously-allocated stack instance. If so,
take it off the list. If not, malloc a new one. */
struct timevar_stack_def *context = NULL;
if (unused_stack_instances != NULL)
{
context = unused_stack_instances;
unused_stack_instances = unused_stack_instances->next;
}
else
context = (struct timevar_stack_def *)
xmalloc (sizeof (struct timevar_stack_def));
/* Fill it in and put it on the stack. */
context->timevar = tv;
context->next = stack;
stack = context;
}
void
timevar_pop (timevar_id_t timevar)
{
if (!timevar_enabled)
return;
if (&timevars[timevar] != stack->timevar)
abort ();
/* What time is it? */
struct timevar_time_def const now = get_current_time ();
/* Attribute the elapsed time to the element we're popping. */
struct timevar_stack_def *popped = stack;
timevar_accumulate (&popped->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to the
element just exposed on the stack. */
start_time = now;
/* Take the item off the stack. */
stack = stack->next;
/* Don't delete the stack element; instead, add it to the list of
unused elements for later use. */
popped->next = unused_stack_instances;
unused_stack_instances = popped;
}
void
timevar_start (timevar_id_t timevar)
{
if (!timevar_enabled)
return;
struct timevar_def *tv = &timevars[timevar];
/* Mark this timing variable as used. */
tv->used = 1;
/* Don't allow the same timing variable to be started more than
once. */
if (tv->standalone)
abort ();
tv->standalone = 1;
set_to_current_time (&tv->start_time);
}
void
timevar_stop (timevar_id_t timevar)
{
if (!timevar_enabled)
return;
struct timevar_def *tv = &timevars[timevar];
/* TIMEVAR must have been started via timevar_start. */
if (!tv->standalone)
abort ();
struct timevar_time_def const now = get_current_time ();
timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
}
void
timevar_get (timevar_id_t timevar,
struct timevar_time_def *elapsed)
{
struct timevar_def *tv = &timevars[timevar];
*elapsed = tv->elapsed;
/* Is TIMEVAR currently running as a standalone timer? */
if (tv->standalone)
{
struct timevar_time_def const now = get_current_time ();
timevar_accumulate (elapsed, &tv->start_time, &now);
}
/* Or is TIMEVAR at the top of the timer stack? */
else if (stack->timevar == tv)
{
struct timevar_time_def const now = get_current_time ();
timevar_accumulate (elapsed, &start_time, &now);
}
}
void
timevar_print (FILE *fp)
{
/* Only print stuff if we have some sort of time information. */
#if defined HAVE_USER_TIME || defined HAVE_SYS_TIME || defined HAVE_WALL_TIME
if (!timevar_enabled)
return;
/* Update timing information in case we're calling this from GDB. */
if (fp == 0)
fp = stderr;
/* What time is it? */
struct timevar_time_def const now = get_current_time ();
/* If the stack isn't empty, attribute the current elapsed time to
the old topmost element. */
if (stack)
timevar_accumulate (&stack->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to
TIMEVAR. */
start_time = now;
struct timevar_time_def const* total = &timevars[TV_TOTAL].elapsed;
fputs (_("\nExecution times (seconds)\n"), fp);
for (unsigned /* timevar_id_t */ id = 0; id < (unsigned) TIMEVAR_LAST; ++id)
{
struct timevar_def *tv = &timevars[(timevar_id_t) id];
const float tiny = 5e-3;
/* Don't print the total execution time here; that goes at the
end. */
if ((timevar_id_t) id == TV_TOTAL)
continue;
/* Don't print timing variables that were never used. */
if (!tv->used)
continue;
/* Don't print timing variables if we're going to get a row of
zeroes. */
if (tv->elapsed.user < tiny
&& tv->elapsed.sys < tiny
&& tv->elapsed.wall < tiny)
continue;
/* The timing variable name. */
fprintf (fp, " %-22s:", tv->name);
# ifdef HAVE_USER_TIME
/* Print user-mode time for this process. */
fprintf (fp, "%7.2f (%2.0f%%) usr",
tv->elapsed.user,
(total->user == 0 ? 0 : tv->elapsed.user / total->user) * 100);
# endif
# ifdef HAVE_SYS_TIME
/* Print system-mode time for this process. */
fprintf (fp, "%7.2f (%2.0f%%) sys",
tv->elapsed.sys,
(total->sys == 0 ? 0 : tv->elapsed.sys / total->sys) * 100);
# endif
# ifdef HAVE_WALL_TIME
/* Print wall clock time elapsed. */
fprintf (fp, "%7.2f (%2.0f%%) wall",
tv->elapsed.wall,
(total->wall == 0 ? 0 : tv->elapsed.wall / total->wall) * 100);
# endif
putc ('\n', fp);
}
/* Print total time. */
fputs (_(" TOTAL :"), fp);
#ifdef HAVE_USER_TIME
fprintf (fp, "%7.2f ", total->user);
#endif
#ifdef HAVE_SYS_TIME
fprintf (fp, "%7.2f ", total->sys);
#endif
#ifdef HAVE_WALL_TIME
fprintf (fp, "%7.2f\n", total->wall);
#endif
#endif /* defined HAVE_USER_TIME || defined HAVE_SYS_TIME || defined HAVE_WALL_TIME */
}

40
lib/timevar.def
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@@ -32,31 +32,31 @@
variable, and NAME is a character string describing its purpose. */
/* The total execution time. */
DEFTIMEVAR (TV_TOTAL , "total time")
DEFTIMEVAR (tv_total , "total time")
/* Time spent in the reader. */
DEFTIMEVAR (TV_READER , "reader")
DEFTIMEVAR (TV_SCANNING , "scanner")
DEFTIMEVAR (TV_PARSING , "parser")
DEFTIMEVAR (tv_reader , "reader")
DEFTIMEVAR (tv_scanning , "scanner")
DEFTIMEVAR (tv_parsing , "parser")
/* Time spent handling the grammar. */
DEFTIMEVAR (TV_REDUCE , "reducing the grammar")
DEFTIMEVAR (TV_SETS , "computing the sets")
DEFTIMEVAR (TV_LR0 , "LR(0)")
DEFTIMEVAR (TV_LALR , "LALR(1)")
DEFTIMEVAR (TV_IELR_PHASE1 , "IELR(1) Phase 1")
DEFTIMEVAR (TV_IELR_PHASE2 , "IELR(1) Phase 2")
DEFTIMEVAR (TV_IELR_PHASE3 , "IELR(1) Phase 3")
DEFTIMEVAR (TV_IELR_PHASE4 , "IELR(1) Phase 4")
DEFTIMEVAR (TV_CONFLICTS , "conflicts")
DEFTIMEVAR (tv_reduce , "reducing the grammar")
DEFTIMEVAR (tv_sets , "computing the sets")
DEFTIMEVAR (tv_lr0 , "LR(0)")
DEFTIMEVAR (tv_lalr , "LALR(1)")
DEFTIMEVAR (tv_ielr_phase1 , "IELR(1) Phase 1")
DEFTIMEVAR (tv_ielr_phase2 , "IELR(1) Phase 2")
DEFTIMEVAR (tv_ielr_phase3 , "IELR(1) Phase 3")
DEFTIMEVAR (tv_ielr_phase4 , "IELR(1) Phase 4")
DEFTIMEVAR (tv_conflicts , "conflicts")
/* Time spent outputing results. */
DEFTIMEVAR (TV_REPORT , "outputing report")
DEFTIMEVAR (TV_GRAPH , "outputing graph")
DEFTIMEVAR (TV_XML , "outputing xml")
DEFTIMEVAR (TV_ACTIONS , "parser action tables")
DEFTIMEVAR (TV_PARSER , "outputing parser")
DEFTIMEVAR (TV_M4 , "running m4")
DEFTIMEVAR (tv_report , "outputing report")
DEFTIMEVAR (tv_graph , "outputing graph")
DEFTIMEVAR (tv_xml , "outputing xml")
DEFTIMEVAR (tv_actions , "parser action tables")
DEFTIMEVAR (tv_parser , "outputing parser")
DEFTIMEVAR (tv_m4 , "running m4")
/* Time spent by freeing the memory :). */
DEFTIMEVAR (TV_FREE , "freeing")
DEFTIMEVAR (tv_free , "freeing")

123
lib/timevar.h
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@@ -1,123 +0,0 @@
/* Timing variables for measuring compiler performance.
Copyright (C) 2000, 2002, 2004, 2009-2015, 2018 Free Software
Foundation, Inc.
Contributed by Alex Samuel <samuel@codesourcery.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _TIMEVAR_H
#define _TIMEVAR_H
/* Timing variables are used to measure elapsed time in various
portions of the compiler. Each measures elapsed user, system, and
wall-clock time, as appropriate to and supported by the host
system.
Timing variables are defined using the DEFTIMEVAR macro in
timevar.def. Each has an enumeral identifier, used when referring
to the timing variable in code, and a character string name.
Timing variables can be used in two ways:
- On the timing stack, using timevar_push and timevar_pop.
Timing variables may be pushed onto the stack; elapsed time is
attributed to the topmost timing variable on the stack. When
another variable is pushed on, the previous topmost variable is
'paused' until the pushed variable is popped back off.
- As a standalone timer, using timevar_start and timevar_stop.
All time elapsed between the two calls is attributed to the
variable.
*/
/* This structure stores the various varieties of time that can be
measured. Times are stored in seconds. The time may be an
absolute time or a time difference; in the former case, the time
base is undefined, except that the difference between two times
produces a valid time difference. */
struct timevar_time_def
{
/* User time in this process. */
float user;
/* System time (if applicable for this host platform) in this
process. */
float sys;
/* Wall clock time. */
float wall;
};
/* An enumeration of timing variable identifiers. Constructed from
the contents of timevar.def. */
#define DEFTIMEVAR(identifier__, name__) \
identifier__,
typedef enum
{
#include "timevar.def"
TIMEVAR_LAST
}
timevar_id_t;
#undef DEFTIMEVAR
/* Initialize timing variables. */
void timevar_init (void);
/* Push TIMEVAR onto the timing stack. No further elapsed time is
attributed to the previous topmost timing variable on the stack;
subsequent elapsed time is attributed to TIMEVAR, until it is
popped or another element is pushed on top.
TIMEVAR cannot be running as a standalone timer. */
void timevar_push (timevar_id_t);
/* Pop the topmost timing variable element off the timing stack. The
popped variable must be TIMEVAR. Elapsed time since the that
element was pushed on, or since it was last exposed on top of the
stack when the element above it was popped off, is credited to that
timing variable. */
void timevar_pop (timevar_id_t);
/* Start timing TIMEVAR independently of the timing stack. Elapsed
time until timevar_stop is called for the same timing variable is
attributed to TIMEVAR. */
void timevar_start (timevar_id_t);
/* Stop timing TIMEVAR. Time elapsed since timevar_start was called
is attributed to it. */
void timevar_stop (timevar_id_t);
/* Fill the elapsed time for TIMEVAR into ELAPSED. Returns
update-to-date information even if TIMEVAR is currently running. */
void timevar_get (timevar_id_t, struct timevar_time_def *);
/* Summarize timing variables to FP. The timing variable TV_TOTAL has
a special meaning -- it's considered to be the total elapsed time,
for normalizing the others, and is displayed last. */
void timevar_print (FILE *);
/* Set to to nonzero to enable timing variables. */
extern int timevar_enabled;
#endif /* ! _TIMEVAR_H */