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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/timevar.h
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+/* Timing variables for measuring compiler performance.
+ Copyright (C) 2000, 2003, 2004, 2005, 2007, 2009, 2010
+ 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 3, 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 COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#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;
+
+ /* Garbage collector memory. */
+ unsigned ggc_mem;
+};
+
+/* An enumeration of timing variable identifiers. Constructed from
+ the contents of timevar.def. */
+
+#define DEFTIMEVAR(identifier__, name__) \
+ identifier__,
+typedef enum
+{
+ TV_NONE,
+#include "timevar.def"
+ TIMEVAR_LAST
+}
+timevar_id_t;
+#undef DEFTIMEVAR
+
+/* True if timevars should be used. In GCC, this happens with
+ the -ftime-report flag. */
+extern bool timevar_enable;
+
+/* Total amount of memory allocated by garbage collector. */
+extern size_t timevar_ggc_mem_total;
+
+/* Execute the sequence: timevar_pop (TV), return (E); */
+#define POP_TIMEVAR_AND_RETURN(TV, E) do { timevar_pop (TV); return (E); }while(0)
+
+extern void timevar_init (void);
+extern void timevar_push_1 (timevar_id_t);
+extern void timevar_pop_1 (timevar_id_t);
+extern void timevar_start (timevar_id_t);
+extern void timevar_stop (timevar_id_t);
+extern void timevar_print (FILE *);
+
+/* Provided for backward compatibility. */
+static inline void
+timevar_push (timevar_id_t tv)
+{
+ if (timevar_enable)
+ timevar_push_1 (tv);
+}
+
+static inline void
+timevar_pop (timevar_id_t tv)
+{
+ if (timevar_enable)
+ timevar_pop_1 (tv);
+}
+
+extern void print_time (const char *, long);
+
+#endif /* ! GCC_TIMEVAR_H */