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