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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [timevar.h] - Blame information for rev 328

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1 280 jeremybenn
/* Timing variables for measuring compiler performance.
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   Copyright (C) 2000, 2003, 2004, 2005, 2007, 2009
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   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 3, 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 COPYING3.  If not see
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   <http://www.gnu.org/licenses/>.  */
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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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  double user;
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  /* System time (if applicable for this host platform) in this
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     process.  */
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  double sys;
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  /* Wall clock time.  */
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  double wall;
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  /* Garbage collector memory.  */
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  unsigned ggc_mem;
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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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  TV_NONE,
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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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/* Execute the sequence: timevar_pop (TV), return (E);  */
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#define POP_TIMEVAR_AND_RETURN(TV, E)  do { timevar_pop (TV); return (E); }while(0)
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#define timevar_pop(TV) do { if (timevar_enable) timevar_pop_1 (TV); }while(0)
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#define timevar_push(TV) do { if (timevar_enable) timevar_push_1 (TV); }while(0)
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extern void timevar_init (void);
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extern void timevar_push_1 (timevar_id_t);
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extern void timevar_pop_1 (timevar_id_t);
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extern void timevar_start (timevar_id_t);
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extern void timevar_stop (timevar_id_t);
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extern void timevar_print (FILE *);
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/* Provided for backward compatibility.  */
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extern void print_time (const char *, long);
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extern bool timevar_enable;
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extern size_t timevar_ggc_mem_total;
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#endif /* ! GCC_TIMEVAR_H */

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