| | 1 | /* Timing variables for measuring compiler performance. |
| | 2 | Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc. |
| | 3 | Contributed by Alex Samuel <samuel@codesourcery.com> |
| | 4 | |
| | 5 | This file is part of Bison, the GNU Compiler Compiler. |
| | 6 | |
| | 7 | Bison is free software; you can redistribute it and/or modify it |
| | 8 | under the terms of the GNU General Public License as published by |
| | 9 | the Free Software Foundation; either version 2, or (at your option) |
| | 10 | any later version. |
| | 11 | |
| | 12 | Bison is distributed in the hope that it will be useful, but WITHOUT |
| | 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| | 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| | 15 | License for more details. |
| | 16 | |
| | 17 | You should have received a copy of the GNU General Public License |
| | 18 | along with Bison; see the file COPYING. If not, write to the Free |
| | 19 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
| | 20 | 02110-1301, USA. */ |
| | 21 | |
| | 22 | #ifndef GCC_TIMEVAR_H |
| | 23 | #define GCC_TIMEVAR_H |
| | 24 | |
| | 25 | /* Timing variables are used to measure elapsed time in various |
| | 26 | portions of the compiler. Each measures elapsed user, system, and |
| | 27 | wall-clock time, as appropriate to and supported by the host |
| | 28 | system. |
| | 29 | |
| | 30 | Timing variables are defined using the DEFTIMEVAR macro in |
| | 31 | timevar.def. Each has an enumeral identifier, used when referring |
| | 32 | to the timing variable in code, and a character string name. |
| | 33 | |
| | 34 | Timing variables can be used in two ways: |
| | 35 | |
| | 36 | - On the timing stack, using timevar_push and timevar_pop. |
| | 37 | Timing variables may be pushed onto the stack; elapsed time is |
| | 38 | attributed to the topmost timing variable on the stack. When |
| | 39 | another variable is pushed on, the previous topmost variable is |
| | 40 | `paused' until the pushed variable is popped back off. |
| | 41 | |
| | 42 | - As a standalone timer, using timevar_start and timevar_stop. |
| | 43 | All time elapsed between the two calls is attributed to the |
| | 44 | variable. |
| | 45 | */ |
| | 46 | |
| | 47 | /* This structure stores the various varieties of time that can be |
| | 48 | measured. Times are stored in seconds. The time may be an |
| | 49 | absolute time or a time difference; in the former case, the time |
| | 50 | base is undefined, except that the difference between two times |
| | 51 | produces a valid time difference. */ |
| | 52 | |
| | 53 | struct timevar_time_def |
| | 54 | { |
| | 55 | /* User time in this process. */ |
| | 56 | float user; |
| | 57 | |
| | 58 | /* System time (if applicable for this host platform) in this |
| | 59 | process. */ |
| | 60 | float sys; |
| | 61 | |
| | 62 | /* Wall clock time. */ |
| | 63 | float wall; |
| | 64 | }; |
| | 65 | |
| | 66 | /* An enumeration of timing variable identifiers. Constructed from |
| | 67 | the contents of timevar.def. */ |
| | 68 | |
| | 69 | #define DEFTIMEVAR(identifier__, name__) \ |
| | 70 | identifier__, |
| | 71 | typedef enum |
| | 72 | { |
| | 73 | #include "timevar.def" |
| | 74 | TIMEVAR_LAST |
| | 75 | } |
| | 76 | timevar_id_t; |
| | 77 | #undef DEFTIMEVAR |
| | 78 | |
| | 79 | extern void init_timevar (void); |
| | 80 | extern void timevar_push (timevar_id_t); |
| | 81 | extern void timevar_pop (timevar_id_t); |
| | 82 | extern void timevar_start (timevar_id_t); |
| | 83 | extern void timevar_stop (timevar_id_t); |
| | 84 | extern void timevar_get (timevar_id_t, struct timevar_time_def *); |
| | 85 | extern void timevar_print (FILE *); |
| | 86 | |
| | 87 | /* Provided for backward compatibility. */ |
| | 88 | extern long get_run_time (void); |
| | 89 | extern void print_time (const char *, long); |
| | 90 | |
| | 91 | extern int timevar_report; |
| | 92 | |
| | 93 | #endif /* ! GCC_TIMEVAR_H */ |
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