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2a9a326b | 1 | /* Timing variables for measuring compiler performance. |
d1e082c2 | 2 | Copyright (C) 2000-2013 Free Software Foundation, Inc. |
2a9a326b AS |
3 | Contributed by Alex Samuel <samuel@codesourcery.com> |
4 | ||
1322177d | 5 | This file is part of GCC. |
2a9a326b | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published by | |
9dcd6f09 | 9 | the Free Software Foundation; either version 3, or (at your option) |
2a9a326b AS |
10 | any later version. |
11 | ||
1322177d LB |
12 | GCC 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. | |
2a9a326b AS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
2a9a326b | 20 | |
0e5921e8 ZW |
21 | #ifndef GCC_TIMEVAR_H |
22 | #define GCC_TIMEVAR_H | |
23 | ||
2a9a326b AS |
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 | |
41077ce4 | 43 | variable. |
2a9a326b | 44 | */ |
41077ce4 | 45 | |
2a9a326b | 46 | /* This structure stores the various varieties of time that can be |
20cc76d5 | 47 | measured. Times are stored in seconds. The time may be an |
2a9a326b AS |
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. */ | |
4977bab6 | 55 | double user; |
2a9a326b AS |
56 | |
57 | /* System time (if applicable for this host platform) in this | |
58 | process. */ | |
4977bab6 | 59 | double sys; |
2a9a326b AS |
60 | |
61 | /* Wall clock time. */ | |
4977bab6 | 62 | double wall; |
8d18c628 ZD |
63 | |
64 | /* Garbage collector memory. */ | |
65 | unsigned ggc_mem; | |
2a9a326b AS |
66 | }; |
67 | ||
684d9f3b | 68 | /* An enumeration of timing variable identifiers. Constructed from |
2a9a326b AS |
69 | the contents of timevar.def. */ |
70 | ||
71 | #define DEFTIMEVAR(identifier__, name__) \ | |
41077ce4 | 72 | identifier__, |
2a9a326b AS |
73 | typedef enum |
74 | { | |
7072a650 | 75 | TV_NONE, |
2a9a326b AS |
76 | #include "timevar.def" |
77 | TIMEVAR_LAST | |
78 | } | |
79 | timevar_id_t; | |
80 | #undef DEFTIMEVAR | |
81 | ||
613b1547 SB |
82 | /* True if timevars should be used. In GCC, this happens with |
83 | the -ftime-report flag. */ | |
84 | extern bool timevar_enable; | |
85 | ||
86 | /* Total amount of memory allocated by garbage collector. */ | |
87 | extern size_t timevar_ggc_mem_total; | |
88 | ||
46c5ad27 | 89 | extern void timevar_init (void); |
89106ed5 AP |
90 | extern void timevar_push_1 (timevar_id_t); |
91 | extern void timevar_pop_1 (timevar_id_t); | |
46c5ad27 AJ |
92 | extern void timevar_start (timevar_id_t); |
93 | extern void timevar_stop (timevar_id_t); | |
575bfb00 LC |
94 | extern bool timevar_cond_start (timevar_id_t); |
95 | extern void timevar_cond_stop (timevar_id_t, bool); | |
46c5ad27 | 96 | extern void timevar_print (FILE *); |
2a9a326b AS |
97 | |
98 | /* Provided for backward compatibility. */ | |
613b1547 SB |
99 | static inline void |
100 | timevar_push (timevar_id_t tv) | |
101 | { | |
102 | if (timevar_enable) | |
103 | timevar_push_1 (tv); | |
104 | } | |
0e5921e8 | 105 | |
613b1547 SB |
106 | static inline void |
107 | timevar_pop (timevar_id_t tv) | |
108 | { | |
109 | if (timevar_enable) | |
110 | timevar_pop_1 (tv); | |
111 | } | |
89106ed5 | 112 | |
613b1547 | 113 | extern void print_time (const char *, long); |
8d18c628 | 114 | |
88657302 | 115 | #endif /* ! GCC_TIMEVAR_H */ |