1 /* Timing variables for measuring compiler performance. 2 3 Copyright (C) 2000, 2002, 2004, 2009-2012 Free Software Foundation, 4 Inc. 5 6 Contributed by Alex Samuel <samuel (at) codesourcery.com> 7 8 This program is free software: you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation, either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #ifndef GCC_TIMEVAR_H 22 #define GCC_TIMEVAR_H 23 24 /* Timing variables are used to measure elapsed time in various 25 portions of the compiler. Each measures elapsed user, system, and 26 wall-clock time, as appropriate to and supported by the host 27 system. 28 29 Timing variables are defined using the DEFTIMEVAR macro in 30 timevar.def. Each has an enumeral identifier, used when referring 31 to the timing variable in code, and a character string name. 32 33 Timing variables can be used in two ways: 34 35 - On the timing stack, using timevar_push and timevar_pop. 36 Timing variables may be pushed onto the stack; elapsed time is 37 attributed to the topmost timing variable on the stack. When 38 another variable is pushed on, the previous topmost variable is 39 `paused' until the pushed variable is popped back off. 40 41 - As a standalone timer, using timevar_start and timevar_stop. 42 All time elapsed between the two calls is attributed to the 43 variable. 44 */ 45 46 /* This structure stores the various varieties of time that can be 47 measured. Times are stored in seconds. The time may be an 48 absolute time or a time difference; in the former case, the time 49 base is undefined, except that the difference between two times 50 produces a valid time difference. */ 51 52 struct timevar_time_def 53 { 54 /* User time in this process. */ 55 float user; 56 57 /* System time (if applicable for this host platform) in this 58 process. */ 59 float sys; 60 61 /* Wall clock time. */ 62 float wall; 63 }; 64 65 /* An enumeration of timing variable identifiers. Constructed from 66 the contents of timevar.def. */ 67 68 #define DEFTIMEVAR(identifier__, name__) \ 69 identifier__, 70 typedef enum 71 { 72 #include "timevar.def" 73 TIMEVAR_LAST 74 } 75 timevar_id_t; 76 #undef DEFTIMEVAR 77 78 extern void init_timevar (void); 79 extern void timevar_push (timevar_id_t); 80 extern void timevar_pop (timevar_id_t); 81 extern void timevar_start (timevar_id_t); 82 extern void timevar_stop (timevar_id_t); 83 extern void timevar_get (timevar_id_t, struct timevar_time_def *); 84 extern void timevar_print (FILE *); 85 86 /* Provided for backward compatibility. */ 87 extern long get_run_time (void); 88 extern void print_time (const char *, long); 89 90 extern int timevar_report; 91 92 #endif /* ! GCC_TIMEVAR_H */ 93
