| /* Timing variables for measuring compiler performance. |
| Copyright (C) 2000-2015 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. */ |
| size_t 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; |
| |
| 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 bool timevar_cond_start (timevar_id_t); |
| extern void timevar_cond_stop (timevar_id_t, bool); |
| 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); |
| } |
| |
| // This is a simple timevar wrapper class that pushes a timevar in its |
| // constructor and pops the timevar in its destructor. |
| class auto_timevar |
| { |
| public: |
| auto_timevar (timevar_id_t tv) |
| : m_tv (tv) |
| { |
| timevar_push (m_tv); |
| } |
| |
| ~auto_timevar () |
| { |
| timevar_pop (m_tv); |
| } |
| |
| private: |
| |
| // Private to disallow copies. |
| auto_timevar (const auto_timevar &); |
| |
| timevar_id_t m_tv; |
| }; |
| |
| extern void print_time (const char *, long); |
| |
| #endif /* ! GCC_TIMEVAR_H */ |