94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* Timing variables for measuring compiler performance.
|
|
Copyright (C) 2000, 2003 Free Software Foundation, Inc.
|
|
Contributed by Alex Samuel <samuel@codesourcery.com>
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC 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 2, or (at your option)
|
|
any later version.
|
|
|
|
GCC 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 GCC; see the file COPYING. If not, write to the Free
|
|
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|
|
02111-1307, USA. */
|
|
|
|
#ifndef GCC_TIMEVAR_H
|
|
#define GCC_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. */
|
|
double user;
|
|
|
|
/* System time (if applicable for this host platform) in this
|
|
process. */
|
|
double sys;
|
|
|
|
/* Wall clock time. */
|
|
double 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
|
|
|
|
/* Execute the sequence: timevar_pop (TV), return (E); */
|
|
#define POP_TIMEVAR_AND_RETURN(TV, E) return (timevar_pop (TV), (E))
|
|
|
|
extern void timevar_init (void);
|
|
extern void timevar_push (timevar_id_t);
|
|
extern void timevar_pop (timevar_id_t);
|
|
extern void timevar_start (timevar_id_t);
|
|
extern void timevar_stop (timevar_id_t);
|
|
extern void timevar_get (timevar_id_t, struct timevar_time_def *);
|
|
extern void timevar_print (FILE *);
|
|
|
|
/* Provided for backward compatibility. */
|
|
extern void print_time (const char *, long);
|
|
|
|
#endif /* ! GCC_TIMEVAR_H */
|