X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Ftimeval.h;h=8dd2e2b06ab392700b8335f8b830287dd2a84f4a;hb=015ac88281952a1b43ad46e9e6300db1c6e3647b;hp=303461adf4734f72941a60583b440a45b28f925f;hpb=279c9e030818e039bb1c26be76e2cc1e8f6b13a6;p=sliver-openvswitch.git diff --git a/lib/timeval.h b/lib/timeval.h index 303461adf..8dd2e2b06 100644 --- a/lib/timeval.h +++ b/lib/timeval.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. + * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -25,6 +25,7 @@ extern "C" { #endif +struct ds; struct pollfd; struct timespec; struct timeval; @@ -42,10 +43,20 @@ BUILD_ASSERT_DECL(TYPE_IS_SIGNED(time_t)); /* Interval between updates to the reported time, in ms. This should not be * adjusted much below 10 ms or so with the current implementation, or too * much time will be wasted in signal handlers and calls to clock_gettime(). */ -#define TIME_UPDATE_INTERVAL 100 +#define TIME_UPDATE_INTERVAL 25 + +/* True on systems that support a monotonic clock. Compared to just getting + * the value of a variable, clock_gettime() is somewhat expensive, even on + * systems that try hard to optimize it (such as x86-64 Linux), so it's + * worthwhile to minimize calls via caching. */ +#ifndef CACHE_TIME +#if defined ESX +#define CACHE_TIME 0 +#else +#define CACHE_TIME 1 +#endif +#endif /* ifndef CACHE_TIME */ -void time_disable_restart(void); -void time_enable_restart(void); void time_postfork(void); void time_refresh(void); time_t time_now(void); @@ -55,12 +66,18 @@ long long int time_wall_msec(void); void time_timespec(struct timespec *); void time_wall_timespec(struct timespec *); void time_alarm(unsigned int secs); -int time_poll(struct pollfd *, int n_pollfds, int timeout); +int time_poll(struct pollfd *, int n_pollfds, long long int timeout_when, + int *elapsed); long long int timespec_to_msec(const struct timespec *); long long int timeval_to_msec(const struct timeval *); void xgettimeofday(struct timeval *); +void xclock_gettime(clock_t, struct timespec *); + +int get_cpu_usage(void); + +long long int time_boot_msec(void); #ifdef __cplusplus }