92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
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/* Timing variables for measuring compiler performance.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by Alex Samuel <samuel@codesourcery.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_TIMEVAR_H
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#define GCC_TIMEVAR_H
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/* Timing variables are used to measure elapsed time in various
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portions of the compiler. Each measures elapsed user, system, and
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wall-clock time, as appropriate to and supported by the host
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system.
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Timing variables are defined using the DEFTIMEVAR macro in
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timevar.def. Each has an enumeral identifier, used when referring
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to the timing variable in code, and a character string name.
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Timing variables can be used in two ways:
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- On the timing stack, using timevar_push and timevar_pop.
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Timing variables may be pushed onto the stack; elapsed time is
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attributed to the topmost timing variable on the stack. When
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another variable is pushed on, the previous topmost variable is
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`paused' until the pushed variable is popped back off.
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- As a standalone timer, using timevar_start and timevar_stop.
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All time elapsed between the two calls is attributed to the
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variable.
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*/
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/* This structure stores the various varieties of time that can be
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measured. Times are stored in seconds. The time may be an
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absolute time or a time difference; in the former case, the time
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base is undefined, except that the difference between two times
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produces a valid time difference. */
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struct timevar_time_def
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{
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/* User time in this process. */
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float user;
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/* System time (if applicable for this host platform) in this
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process. */
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float sys;
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/* Wall clock time. */
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float wall;
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};
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/* An enumeration of timing variable identifiers. Constructed from
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the contents of timevar.def. */
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#define DEFTIMEVAR(identifier__, name__) \
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identifier__,
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typedef enum
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{
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#include "timevar.def"
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TIMEVAR_LAST
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}
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timevar_id_t;
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#undef DEFTIMEVAR
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extern void init_timevar PARAMS ((void));
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extern void timevar_push PARAMS ((timevar_id_t));
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extern void timevar_pop PARAMS ((timevar_id_t));
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extern void timevar_start PARAMS ((timevar_id_t));
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extern void timevar_stop PARAMS ((timevar_id_t));
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extern void timevar_get PARAMS ((timevar_id_t, struct timevar_time_def *));
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extern void timevar_print PARAMS ((FILE *));
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/* Provided for backward compatibility. */
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extern long get_run_time PARAMS ((void));
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extern void print_time PARAMS ((const char *, long));
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#endif /* ! GCC_TIMEVAR_H */
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