diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/profile.h | 91 |
1 files changed, 79 insertions, 12 deletions
diff --git a/src/include/ipxe/profile.h b/src/include/ipxe/profile.h index d4fc4f90f..3a745fcfa 100644 --- a/src/include/ipxe/profile.h +++ b/src/include/ipxe/profile.h @@ -58,12 +58,66 @@ struct profiler { #define __profiler #endif +extern unsigned long profile_excluded; + extern void profile_update ( struct profiler *profiler, unsigned long sample ); extern unsigned long profile_mean ( struct profiler *profiler ); extern unsigned long profile_variance ( struct profiler *profiler ); extern unsigned long profile_stddev ( struct profiler *profiler ); /** + * Get start time + * + * @v profiler Profiler + * @ret started Start time + */ +static inline __attribute__ (( always_inline )) unsigned long +profile_started ( struct profiler *profiler ) { + + /* If profiling is active then return start time */ + if ( PROFILING ) { + return ( profiler->started + profile_excluded ); + } else { + return 0; + } +} + +/** + * Get stop time + * + * @v profiler Profiler + * @ret stopped Stop time + */ +static inline __attribute__ (( always_inline )) unsigned long +profile_stopped ( struct profiler *profiler ) { + + /* If profiling is active then return start time */ + if ( PROFILING ) { + return ( profiler->stopped + profile_excluded ); + } else { + return 0; + } +} + +/** + * Get elapsed time + * + * @v profiler Profiler + * @ret elapsed Elapsed time + */ +static inline __attribute__ (( always_inline )) unsigned long +profile_elapsed ( struct profiler *profiler ) { + + /* If profiling is active then return elapsed time */ + if ( PROFILING ) { + return ( profile_stopped ( profiler ) - + profile_started ( profiler ) ); + } else { + return 0; + } +} + +/** * Start profiling * * @v profiler Profiler @@ -74,7 +128,23 @@ profile_start_at ( struct profiler *profiler, unsigned long started ) { /* If profiling is active then record start timestamp */ if ( PROFILING ) - profiler->started = started; + profiler->started = ( started - profile_excluded ); +} + +/** + * Stop profiling + * + * @v profiler Profiler + * @v stopped Stop timestamp + */ +static inline __attribute__ (( always_inline )) void +profile_stop_at ( struct profiler *profiler, unsigned long stopped ) { + + /* If profiling is active then record end timestamp and update stats */ + if ( PROFILING ) { + profiler->stopped = ( stopped - profile_excluded ); + profile_update ( profiler, profile_elapsed ( profiler ) ); + } } /** @@ -91,32 +161,29 @@ profile_start ( struct profiler *profiler ) { } /** - * Record profiling result + * Stop profiling * * @v profiler Profiler - * @v stopped Stop timestamp */ static inline __attribute__ (( always_inline )) void -profile_stop_at ( struct profiler *profiler, unsigned long stopped ) { +profile_stop ( struct profiler *profiler ) { /* If profiling is active then record end timestamp and update stats */ - if ( PROFILING ) { - profiler->stopped = stopped; - profile_update ( profiler, ( stopped - profiler->started ) ); - } + if ( PROFILING ) + profile_stop_at ( profiler, profile_timestamp() ); } /** - * Record profiling result + * Exclude time from other ongoing profiling results * * @v profiler Profiler */ static inline __attribute__ (( always_inline )) void -profile_stop ( struct profiler *profiler ) { +profile_exclude ( struct profiler *profiler ) { - /* If profiling is active then record end timestamp and update stats */ + /* If profiling is active then update accumulated excluded time */ if ( PROFILING ) - profile_stop_at ( profiler, profile_timestamp() ); + profile_excluded += profile_elapsed ( profiler ); } #endif /* _IPXE_PROFILE_H */ |