mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-23 20:03:31 +01:00
Extract time functionality into lib/wallclock and lib/time
This commit is contained in:
parent
bdea94a665
commit
a097ddb4f5
2
.gitignore
vendored
2
.gitignore
vendored
@ -203,6 +203,8 @@ uptime-*.json
|
|||||||
/src/lib/libtor-smartlist-core-testing.a
|
/src/lib/libtor-smartlist-core-testing.a
|
||||||
/src/lib/libtor-thread.a
|
/src/lib/libtor-thread.a
|
||||||
/src/lib/libtor-thread-testing.a
|
/src/lib/libtor-thread-testing.a
|
||||||
|
/src/lib/libtor-time.a
|
||||||
|
/src/lib/libtor-time-testing.a
|
||||||
/src/lib/libtor-tls.a
|
/src/lib/libtor-tls.a
|
||||||
/src/lib/libtor-tls-testing.a
|
/src/lib/libtor-tls-testing.a
|
||||||
/src/lib/libtor-trace.a
|
/src/lib/libtor-trace.a
|
||||||
|
@ -49,6 +49,7 @@ TOR_UTIL_LIBS = \
|
|||||||
src/lib/libtor-thread.a \
|
src/lib/libtor-thread.a \
|
||||||
src/lib/libtor-memarea.a \
|
src/lib/libtor-memarea.a \
|
||||||
src/lib/libtor-math.a \
|
src/lib/libtor-math.a \
|
||||||
|
src/lib/libtor-time.a \
|
||||||
src/lib/libtor-log.a \
|
src/lib/libtor-log.a \
|
||||||
src/lib/libtor-lock.a \
|
src/lib/libtor-lock.a \
|
||||||
src/lib/libtor-fdio.a \
|
src/lib/libtor-fdio.a \
|
||||||
@ -73,6 +74,7 @@ TOR_UTIL_TESTING_LIBS = \
|
|||||||
src/lib/libtor-thread-testing.a \
|
src/lib/libtor-thread-testing.a \
|
||||||
src/lib/libtor-memarea-testing.a \
|
src/lib/libtor-memarea-testing.a \
|
||||||
src/lib/libtor-math-testing.a \
|
src/lib/libtor-math-testing.a \
|
||||||
|
src/lib/libtor-time-testing.a \
|
||||||
src/lib/libtor-log-testing.a \
|
src/lib/libtor-log-testing.a \
|
||||||
src/lib/libtor-lock-testing.a \
|
src/lib/libtor-lock-testing.a \
|
||||||
src/lib/libtor-fdio-testing.a \
|
src/lib/libtor-fdio-testing.a \
|
||||||
|
@ -59,54 +59,13 @@
|
|||||||
#include "lib/fs/files.h"
|
#include "lib/fs/files.h"
|
||||||
#include "lib/fs/mmap.h"
|
#include "lib/fs/mmap.h"
|
||||||
#include "lib/fs/userdb.h"
|
#include "lib/fs/userdb.h"
|
||||||
|
#include "lib/wallclock/timeval.h"
|
||||||
|
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
|
|
||||||
/* ===== Time compatibility */
|
/* ===== Time compatibility */
|
||||||
|
|
||||||
#ifndef timeradd
|
|
||||||
/** Replacement for timeradd on platforms that do not have it: sets tvout to
|
|
||||||
* the sum of tv1 and tv2. */
|
|
||||||
#define timeradd(tv1,tv2,tvout) \
|
|
||||||
do { \
|
|
||||||
(tvout)->tv_sec = (tv1)->tv_sec + (tv2)->tv_sec; \
|
|
||||||
(tvout)->tv_usec = (tv1)->tv_usec + (tv2)->tv_usec; \
|
|
||||||
if ((tvout)->tv_usec >= 1000000) { \
|
|
||||||
(tvout)->tv_usec -= 1000000; \
|
|
||||||
(tvout)->tv_sec++; \
|
|
||||||
} \
|
|
||||||
} while (0)
|
|
||||||
#endif /* !defined(timeradd) */
|
|
||||||
|
|
||||||
#ifndef timersub
|
|
||||||
/** Replacement for timersub on platforms that do not have it: sets tvout to
|
|
||||||
* tv1 minus tv2. */
|
|
||||||
#define timersub(tv1,tv2,tvout) \
|
|
||||||
do { \
|
|
||||||
(tvout)->tv_sec = (tv1)->tv_sec - (tv2)->tv_sec; \
|
|
||||||
(tvout)->tv_usec = (tv1)->tv_usec - (tv2)->tv_usec; \
|
|
||||||
if ((tvout)->tv_usec < 0) { \
|
|
||||||
(tvout)->tv_usec += 1000000; \
|
|
||||||
(tvout)->tv_sec--; \
|
|
||||||
} \
|
|
||||||
} while (0)
|
|
||||||
#endif /* !defined(timersub) */
|
|
||||||
|
|
||||||
#ifndef timercmp
|
|
||||||
/** Replacement for timercmp on platforms that do not have it: returns true
|
|
||||||
* iff the relational operator "op" makes the expression tv1 op tv2 true.
|
|
||||||
*
|
|
||||||
* Note that while this definition should work for all boolean operators, some
|
|
||||||
* platforms' native timercmp definitions do not support >=, <=, or ==. So
|
|
||||||
* don't use those.
|
|
||||||
*/
|
|
||||||
#define timercmp(tv1,tv2,op) \
|
|
||||||
(((tv1)->tv_sec == (tv2)->tv_sec) ? \
|
|
||||||
((tv1)->tv_usec op (tv2)->tv_usec) : \
|
|
||||||
((tv1)->tv_sec op (tv2)->tv_sec))
|
|
||||||
#endif /* !defined(timercmp) */
|
|
||||||
|
|
||||||
/* ===== File compatibility */
|
/* ===== File compatibility */
|
||||||
|
|
||||||
/* ===== Net compatibility */
|
/* ===== Net compatibility */
|
||||||
|
@ -27,7 +27,6 @@ LIBOR_A_SRC = \
|
|||||||
src/common/address_set.c \
|
src/common/address_set.c \
|
||||||
src/common/buffers.c \
|
src/common/buffers.c \
|
||||||
src/common/compat.c \
|
src/common/compat.c \
|
||||||
src/common/compat_time.c \
|
|
||||||
src/common/util.c \
|
src/common/util.c \
|
||||||
src/common/token_bucket.c \
|
src/common/token_bucket.c \
|
||||||
src/common/workqueue.c \
|
src/common/workqueue.c \
|
||||||
@ -64,7 +63,6 @@ COMMONHEADERS = \
|
|||||||
src/common/buffers.h \
|
src/common/buffers.h \
|
||||||
src/common/compat.h \
|
src/common/compat.h \
|
||||||
src/common/compat_libevent.h \
|
src/common/compat_libevent.h \
|
||||||
src/common/compat_time.h \
|
|
||||||
src/common/handles.h \
|
src/common/handles.h \
|
||||||
src/common/procmon.h \
|
src/common/procmon.h \
|
||||||
src/common/timers.h \
|
src/common/timers.h \
|
||||||
|
@ -135,152 +135,6 @@ ENABLE_GCC_WARNING(aggregate-return)
|
|||||||
* Time
|
* Time
|
||||||
* ===== */
|
* ===== */
|
||||||
|
|
||||||
#define TOR_USEC_PER_SEC 1000000
|
|
||||||
|
|
||||||
/** Return the difference between start->tv_sec and end->tv_sec.
|
|
||||||
* Returns INT64_MAX on overflow and underflow.
|
|
||||||
*/
|
|
||||||
static int64_t
|
|
||||||
tv_secdiff_impl(const struct timeval *start, const struct timeval *end)
|
|
||||||
{
|
|
||||||
const int64_t s = (int64_t)start->tv_sec;
|
|
||||||
const int64_t e = (int64_t)end->tv_sec;
|
|
||||||
|
|
||||||
/* This may not be the most efficient way of implemeting this check,
|
|
||||||
* but it's easy to see that it's correct and doesn't overflow */
|
|
||||||
|
|
||||||
if (s > 0 && e < INT64_MIN + s) {
|
|
||||||
/* s is positive: equivalent to e - s < INT64_MIN, but without any
|
|
||||||
* overflow */
|
|
||||||
return INT64_MAX;
|
|
||||||
} else if (s < 0 && e > INT64_MAX + s) {
|
|
||||||
/* s is negative: equivalent to e - s > INT64_MAX, but without any
|
|
||||||
* overflow */
|
|
||||||
return INT64_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
return e - s;
|
|
||||||
}
|
|
||||||
|
|
||||||
/** Return the number of microseconds elapsed between *start and *end.
|
|
||||||
* Returns LONG_MAX on overflow and underflow.
|
|
||||||
*/
|
|
||||||
long
|
|
||||||
tv_udiff(const struct timeval *start, const struct timeval *end)
|
|
||||||
{
|
|
||||||
/* Sanity check tv_usec */
|
|
||||||
if (start->tv_usec > TOR_USEC_PER_SEC || start->tv_usec < 0) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on microsecond detail with bad "
|
|
||||||
"start tv_usec: " I64_FORMAT " microseconds",
|
|
||||||
I64_PRINTF_ARG(start->tv_usec));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (end->tv_usec > TOR_USEC_PER_SEC || end->tv_usec < 0) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on microsecond detail with bad "
|
|
||||||
"end tv_usec: " I64_FORMAT " microseconds",
|
|
||||||
I64_PRINTF_ARG(end->tv_usec));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Some BSDs have struct timeval.tv_sec 64-bit, but time_t (and long) 32-bit
|
|
||||||
*/
|
|
||||||
int64_t udiff;
|
|
||||||
const int64_t secdiff = tv_secdiff_impl(start, end);
|
|
||||||
|
|
||||||
/* end->tv_usec - start->tv_usec can be up to 1 second either way */
|
|
||||||
if (secdiff > (int64_t)(LONG_MAX/1000000 - 1) ||
|
|
||||||
secdiff < (int64_t)(LONG_MIN/1000000 + 1)) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on microsecond detail too far "
|
|
||||||
"apart: " I64_FORMAT " seconds", I64_PRINTF_ARG(secdiff));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* we'll never get an overflow here, because we check that both usecs are
|
|
||||||
* between 0 and TV_USEC_PER_SEC. */
|
|
||||||
udiff = secdiff*1000000 + ((int64_t)end->tv_usec - (int64_t)start->tv_usec);
|
|
||||||
|
|
||||||
/* Some compilers are smart enough to work out this is a no-op on L64 */
|
|
||||||
#if SIZEOF_LONG < 8
|
|
||||||
if (udiff > (int64_t)LONG_MAX || udiff < (int64_t)LONG_MIN) {
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
return (long)udiff;
|
|
||||||
}
|
|
||||||
|
|
||||||
/** Return the number of milliseconds elapsed between *start and *end.
|
|
||||||
* If the tv_usec difference is 500, rounds away from zero.
|
|
||||||
* Returns LONG_MAX on overflow and underflow.
|
|
||||||
*/
|
|
||||||
long
|
|
||||||
tv_mdiff(const struct timeval *start, const struct timeval *end)
|
|
||||||
{
|
|
||||||
/* Sanity check tv_usec */
|
|
||||||
if (start->tv_usec > TOR_USEC_PER_SEC || start->tv_usec < 0) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on millisecond detail with bad "
|
|
||||||
"start tv_usec: " I64_FORMAT " microseconds",
|
|
||||||
I64_PRINTF_ARG(start->tv_usec));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (end->tv_usec > TOR_USEC_PER_SEC || end->tv_usec < 0) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on millisecond detail with bad "
|
|
||||||
"end tv_usec: " I64_FORMAT " microseconds",
|
|
||||||
I64_PRINTF_ARG(end->tv_usec));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Some BSDs have struct timeval.tv_sec 64-bit, but time_t (and long) 32-bit
|
|
||||||
*/
|
|
||||||
int64_t mdiff;
|
|
||||||
const int64_t secdiff = tv_secdiff_impl(start, end);
|
|
||||||
|
|
||||||
/* end->tv_usec - start->tv_usec can be up to 1 second either way, but the
|
|
||||||
* mdiff calculation may add another temporary second for rounding.
|
|
||||||
* Whether this actually causes overflow depends on the compiler's constant
|
|
||||||
* folding and order of operations. */
|
|
||||||
if (secdiff > (int64_t)(LONG_MAX/1000 - 2) ||
|
|
||||||
secdiff < (int64_t)(LONG_MIN/1000 + 1)) {
|
|
||||||
log_warn(LD_GENERAL, "comparing times on millisecond detail too far "
|
|
||||||
"apart: " I64_FORMAT " seconds", I64_PRINTF_ARG(secdiff));
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Subtract and round */
|
|
||||||
mdiff = secdiff*1000 +
|
|
||||||
/* We add a million usec here to ensure that the result is positive,
|
|
||||||
* so that the round-towards-zero behavior of the division will give
|
|
||||||
* the right result for rounding to the nearest msec. Later we subtract
|
|
||||||
* 1000 in order to get the correct result.
|
|
||||||
* We'll never get an overflow here, because we check that both usecs are
|
|
||||||
* between 0 and TV_USEC_PER_SEC. */
|
|
||||||
((int64_t)end->tv_usec - (int64_t)start->tv_usec + 500 + 1000000) / 1000
|
|
||||||
- 1000;
|
|
||||||
|
|
||||||
/* Some compilers are smart enough to work out this is a no-op on L64 */
|
|
||||||
#if SIZEOF_LONG < 8
|
|
||||||
if (mdiff > (int64_t)LONG_MAX || mdiff < (int64_t)LONG_MIN) {
|
|
||||||
return LONG_MAX;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
return (long)mdiff;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Converts timeval to milliseconds.
|
|
||||||
*/
|
|
||||||
int64_t
|
|
||||||
tv_to_msec(const struct timeval *tv)
|
|
||||||
{
|
|
||||||
int64_t conv = ((int64_t)tv->tv_sec)*1000L;
|
|
||||||
/* Round ghetto-style */
|
|
||||||
conv += ((int64_t)tv->tv_usec+500)/1000L;
|
|
||||||
return conv;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef _WIN32
|
#ifdef _WIN32
|
||||||
HANDLE
|
HANDLE
|
||||||
load_windows_system_library(const TCHAR *library_name)
|
load_windows_system_library(const TCHAR *library_name)
|
||||||
|
@ -66,9 +66,6 @@ void tor_log_mallinfo(int severity);
|
|||||||
/* String manipulation */
|
/* String manipulation */
|
||||||
|
|
||||||
/* Time helpers */
|
/* Time helpers */
|
||||||
long tv_udiff(const struct timeval *start, const struct timeval *end);
|
|
||||||
long tv_mdiff(const struct timeval *start, const struct timeval *end);
|
|
||||||
int64_t tv_to_msec(const struct timeval *tv);
|
|
||||||
|
|
||||||
/* File helpers */
|
/* File helpers */
|
||||||
|
|
||||||
|
@ -24,6 +24,7 @@ include src/lib/string/include.am
|
|||||||
include src/lib/smartlist_core/include.am
|
include src/lib/smartlist_core/include.am
|
||||||
include src/lib/testsupport/include.am
|
include src/lib/testsupport/include.am
|
||||||
include src/lib/thread/include.am
|
include src/lib/thread/include.am
|
||||||
|
include src/lib/time/include.am
|
||||||
include src/lib/tls/include.am
|
include src/lib/tls/include.am
|
||||||
include src/lib/trace/include.am
|
include src/lib/trace/include.am
|
||||||
include src/lib/wallclock/include.am
|
include src/lib/wallclock/include.am
|
||||||
|
8
src/lib/time/.may_include
Normal file
8
src/lib/time/.may_include
Normal file
@ -0,0 +1,8 @@
|
|||||||
|
orconfig.h
|
||||||
|
|
||||||
|
lib/cc/*.h
|
||||||
|
lib/err/*.h
|
||||||
|
lib/intmath/*.h
|
||||||
|
lib/log/*.h
|
||||||
|
lib/time/*.h
|
||||||
|
lib/wallclock/*.h
|
@ -10,7 +10,12 @@
|
|||||||
**/
|
**/
|
||||||
|
|
||||||
#define COMPAT_TIME_PRIVATE
|
#define COMPAT_TIME_PRIVATE
|
||||||
#include "common/compat.h"
|
#include "lib/time/compat_time.h"
|
||||||
|
|
||||||
|
#include "lib/err/torerr.h"
|
||||||
|
#include "lib/log/torlog.h"
|
||||||
|
#include "lib/log/util_bug.h"
|
||||||
|
#include "lib/intmath/muldiv.h"
|
||||||
|
|
||||||
#ifdef _WIN32
|
#ifdef _WIN32
|
||||||
#include <winsock2.h>
|
#include <winsock2.h>
|
||||||
@ -20,6 +25,9 @@
|
|||||||
#ifdef HAVE_SYS_TYPES_H
|
#ifdef HAVE_SYS_TYPES_H
|
||||||
#include <sys/types.h>
|
#include <sys/types.h>
|
||||||
#endif
|
#endif
|
||||||
|
#ifdef HAVE_SYS_TIME_H
|
||||||
|
#include <sys/time.h>
|
||||||
|
#endif
|
||||||
#ifdef HAVE_UNISTD_H
|
#ifdef HAVE_UNISTD_H
|
||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
#endif
|
#endif
|
||||||
@ -34,9 +42,9 @@
|
|||||||
#include <mach/mach_time.h>
|
#include <mach/mach_time.h>
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#include "lib/err/torerr.h"
|
#include <errno.h>
|
||||||
#include "lib/log/torlog.h"
|
#include <stdlib.h>
|
||||||
#include "common/util.h"
|
#include <string.h>
|
||||||
|
|
||||||
#ifdef _WIN32
|
#ifdef _WIN32
|
||||||
#undef HAVE_CLOCK_GETTIME
|
#undef HAVE_CLOCK_GETTIME
|
@ -19,6 +19,8 @@
|
|||||||
#define TOR_COMPAT_TIME_H
|
#define TOR_COMPAT_TIME_H
|
||||||
|
|
||||||
#include "orconfig.h"
|
#include "orconfig.h"
|
||||||
|
#include "lib/cc/torint.h"
|
||||||
|
|
||||||
#include "lib/wallclock/tor_gettimeofday.h"
|
#include "lib/wallclock/tor_gettimeofday.h"
|
||||||
|
|
||||||
#ifdef _WIN32
|
#ifdef _WIN32
|
19
src/lib/time/include.am
Normal file
19
src/lib/time/include.am
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
|
||||||
|
noinst_LIBRARIES += src/lib/libtor-time.a
|
||||||
|
|
||||||
|
if UNITTESTS_ENABLED
|
||||||
|
noinst_LIBRARIES += src/lib/libtor-time-testing.a
|
||||||
|
endif
|
||||||
|
|
||||||
|
src_lib_libtor_time_a_SOURCES = \
|
||||||
|
src/lib/time/compat_time.c \
|
||||||
|
src/lib/time/tvdiff.c
|
||||||
|
|
||||||
|
src_lib_libtor_time_testing_a_SOURCES = \
|
||||||
|
$(src_lib_libtor_time_a_SOURCES)
|
||||||
|
src_lib_libtor_time_testing_a_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
|
||||||
|
src_lib_libtor_time_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)
|
||||||
|
|
||||||
|
noinst_HEADERS += \
|
||||||
|
src/lib/time/compat_time.h \
|
||||||
|
src/lib/time/tvdiff.h
|
155
src/lib/time/tvdiff.c
Normal file
155
src/lib/time/tvdiff.c
Normal file
@ -0,0 +1,155 @@
|
|||||||
|
/* Copyright (c) 2003-2004, Roger Dingledine
|
||||||
|
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
|
||||||
|
* Copyright (c) 2007-2018, The Tor Project, Inc. */
|
||||||
|
/* See LICENSE for licensing information */
|
||||||
|
|
||||||
|
#include "lib/time/tvdiff.h"
|
||||||
|
|
||||||
|
#include "lib/cc/compat_compiler.h"
|
||||||
|
#include "lib/log/torlog.h"
|
||||||
|
|
||||||
|
#define TOR_USEC_PER_SEC 1000000
|
||||||
|
|
||||||
|
/** Return the difference between start->tv_sec and end->tv_sec.
|
||||||
|
* Returns INT64_MAX on overflow and underflow.
|
||||||
|
*/
|
||||||
|
static int64_t
|
||||||
|
tv_secdiff_impl(const struct timeval *start, const struct timeval *end)
|
||||||
|
{
|
||||||
|
const int64_t s = (int64_t)start->tv_sec;
|
||||||
|
const int64_t e = (int64_t)end->tv_sec;
|
||||||
|
|
||||||
|
/* This may not be the most efficient way of implemeting this check,
|
||||||
|
* but it's easy to see that it's correct and doesn't overflow */
|
||||||
|
|
||||||
|
if (s > 0 && e < INT64_MIN + s) {
|
||||||
|
/* s is positive: equivalent to e - s < INT64_MIN, but without any
|
||||||
|
* overflow */
|
||||||
|
return INT64_MAX;
|
||||||
|
} else if (s < 0 && e > INT64_MAX + s) {
|
||||||
|
/* s is negative: equivalent to e - s > INT64_MAX, but without any
|
||||||
|
* overflow */
|
||||||
|
return INT64_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
return e - s;
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Return the number of microseconds elapsed between *start and *end.
|
||||||
|
* Returns LONG_MAX on overflow and underflow.
|
||||||
|
*/
|
||||||
|
long
|
||||||
|
tv_udiff(const struct timeval *start, const struct timeval *end)
|
||||||
|
{
|
||||||
|
/* Sanity check tv_usec */
|
||||||
|
if (start->tv_usec > TOR_USEC_PER_SEC || start->tv_usec < 0) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on microsecond detail with bad "
|
||||||
|
"start tv_usec: " I64_FORMAT " microseconds",
|
||||||
|
I64_PRINTF_ARG(start->tv_usec));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (end->tv_usec > TOR_USEC_PER_SEC || end->tv_usec < 0) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on microsecond detail with bad "
|
||||||
|
"end tv_usec: " I64_FORMAT " microseconds",
|
||||||
|
I64_PRINTF_ARG(end->tv_usec));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Some BSDs have struct timeval.tv_sec 64-bit, but time_t (and long) 32-bit
|
||||||
|
*/
|
||||||
|
int64_t udiff;
|
||||||
|
const int64_t secdiff = tv_secdiff_impl(start, end);
|
||||||
|
|
||||||
|
/* end->tv_usec - start->tv_usec can be up to 1 second either way */
|
||||||
|
if (secdiff > (int64_t)(LONG_MAX/1000000 - 1) ||
|
||||||
|
secdiff < (int64_t)(LONG_MIN/1000000 + 1)) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on microsecond detail too far "
|
||||||
|
"apart: " I64_FORMAT " seconds", I64_PRINTF_ARG(secdiff));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* we'll never get an overflow here, because we check that both usecs are
|
||||||
|
* between 0 and TV_USEC_PER_SEC. */
|
||||||
|
udiff = secdiff*1000000 + ((int64_t)end->tv_usec - (int64_t)start->tv_usec);
|
||||||
|
|
||||||
|
/* Some compilers are smart enough to work out this is a no-op on L64 */
|
||||||
|
#if SIZEOF_LONG < 8
|
||||||
|
if (udiff > (int64_t)LONG_MAX || udiff < (int64_t)LONG_MIN) {
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return (long)udiff;
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Return the number of milliseconds elapsed between *start and *end.
|
||||||
|
* If the tv_usec difference is 500, rounds away from zero.
|
||||||
|
* Returns LONG_MAX on overflow and underflow.
|
||||||
|
*/
|
||||||
|
long
|
||||||
|
tv_mdiff(const struct timeval *start, const struct timeval *end)
|
||||||
|
{
|
||||||
|
/* Sanity check tv_usec */
|
||||||
|
if (start->tv_usec > TOR_USEC_PER_SEC || start->tv_usec < 0) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on millisecond detail with bad "
|
||||||
|
"start tv_usec: " I64_FORMAT " microseconds",
|
||||||
|
I64_PRINTF_ARG(start->tv_usec));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (end->tv_usec > TOR_USEC_PER_SEC || end->tv_usec < 0) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on millisecond detail with bad "
|
||||||
|
"end tv_usec: " I64_FORMAT " microseconds",
|
||||||
|
I64_PRINTF_ARG(end->tv_usec));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Some BSDs have struct timeval.tv_sec 64-bit, but time_t (and long) 32-bit
|
||||||
|
*/
|
||||||
|
int64_t mdiff;
|
||||||
|
const int64_t secdiff = tv_secdiff_impl(start, end);
|
||||||
|
|
||||||
|
/* end->tv_usec - start->tv_usec can be up to 1 second either way, but the
|
||||||
|
* mdiff calculation may add another temporary second for rounding.
|
||||||
|
* Whether this actually causes overflow depends on the compiler's constant
|
||||||
|
* folding and order of operations. */
|
||||||
|
if (secdiff > (int64_t)(LONG_MAX/1000 - 2) ||
|
||||||
|
secdiff < (int64_t)(LONG_MIN/1000 + 1)) {
|
||||||
|
log_warn(LD_GENERAL, "comparing times on millisecond detail too far "
|
||||||
|
"apart: " I64_FORMAT " seconds", I64_PRINTF_ARG(secdiff));
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Subtract and round */
|
||||||
|
mdiff = secdiff*1000 +
|
||||||
|
/* We add a million usec here to ensure that the result is positive,
|
||||||
|
* so that the round-towards-zero behavior of the division will give
|
||||||
|
* the right result for rounding to the nearest msec. Later we subtract
|
||||||
|
* 1000 in order to get the correct result.
|
||||||
|
* We'll never get an overflow here, because we check that both usecs are
|
||||||
|
* between 0 and TV_USEC_PER_SEC. */
|
||||||
|
((int64_t)end->tv_usec - (int64_t)start->tv_usec + 500 + 1000000) / 1000
|
||||||
|
- 1000;
|
||||||
|
|
||||||
|
/* Some compilers are smart enough to work out this is a no-op on L64 */
|
||||||
|
#if SIZEOF_LONG < 8
|
||||||
|
if (mdiff > (int64_t)LONG_MAX || mdiff < (int64_t)LONG_MIN) {
|
||||||
|
return LONG_MAX;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return (long)mdiff;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Converts timeval to milliseconds.
|
||||||
|
*/
|
||||||
|
int64_t
|
||||||
|
tv_to_msec(const struct timeval *tv)
|
||||||
|
{
|
||||||
|
int64_t conv = ((int64_t)tv->tv_sec)*1000L;
|
||||||
|
/* Round ghetto-style */
|
||||||
|
conv += ((int64_t)tv->tv_usec+500)/1000L;
|
||||||
|
return conv;
|
||||||
|
}
|
16
src/lib/time/tvdiff.h
Normal file
16
src/lib/time/tvdiff.h
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
/* Copyright (c) 2003-2004, Roger Dingledine
|
||||||
|
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
|
||||||
|
* Copyright (c) 2007-2018, The Tor Project, Inc. */
|
||||||
|
/* See LICENSE for licensing information */
|
||||||
|
|
||||||
|
#ifndef TOR_TVDIFF_H
|
||||||
|
#define TOR_TVDIFF_H
|
||||||
|
|
||||||
|
#include "lib/cc/torint.h"
|
||||||
|
struct timeval;
|
||||||
|
|
||||||
|
long tv_udiff(const struct timeval *start, const struct timeval *end);
|
||||||
|
long tv_mdiff(const struct timeval *start, const struct timeval *end);
|
||||||
|
int64_t tv_to_msec(const struct timeval *tv);
|
||||||
|
|
||||||
|
#endif
|
@ -17,5 +17,6 @@ src_lib_libtor_wallclock_testing_a_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)
|
|||||||
|
|
||||||
noinst_HEADERS += \
|
noinst_HEADERS += \
|
||||||
src/lib/wallclock/approx_time.h \
|
src/lib/wallclock/approx_time.h \
|
||||||
|
src/lib/wallclock/timeval.h \
|
||||||
src/lib/wallclock/tm_cvt.h \
|
src/lib/wallclock/tm_cvt.h \
|
||||||
src/lib/wallclock/tor_gettimeofday.h
|
src/lib/wallclock/tor_gettimeofday.h
|
||||||
|
0
src/lib/wallclock/timeval.c
Normal file
0
src/lib/wallclock/timeval.c
Normal file
58
src/lib/wallclock/timeval.h
Normal file
58
src/lib/wallclock/timeval.h
Normal file
@ -0,0 +1,58 @@
|
|||||||
|
/* Copyright (c) 2003-2004, Roger Dingledine
|
||||||
|
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
|
||||||
|
* Copyright (c) 2007-2018, The Tor Project, Inc. */
|
||||||
|
/* See LICENSE for licensing information */
|
||||||
|
|
||||||
|
#ifndef TOR_TIMEVAL_H
|
||||||
|
#define TOR_TIMEVAL_H
|
||||||
|
|
||||||
|
#include "orconfig.h"
|
||||||
|
#include "lib/cc/torint.h"
|
||||||
|
|
||||||
|
#ifdef HAVE_SYS_TIME_H
|
||||||
|
#include <sys/time.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef timeradd
|
||||||
|
/** Replacement for timeradd on platforms that do not have it: sets tvout to
|
||||||
|
* the sum of tv1 and tv2. */
|
||||||
|
#define timeradd(tv1,tv2,tvout) \
|
||||||
|
do { \
|
||||||
|
(tvout)->tv_sec = (tv1)->tv_sec + (tv2)->tv_sec; \
|
||||||
|
(tvout)->tv_usec = (tv1)->tv_usec + (tv2)->tv_usec; \
|
||||||
|
if ((tvout)->tv_usec >= 1000000) { \
|
||||||
|
(tvout)->tv_usec -= 1000000; \
|
||||||
|
(tvout)->tv_sec++; \
|
||||||
|
} \
|
||||||
|
} while (0)
|
||||||
|
#endif /* !defined(timeradd) */
|
||||||
|
|
||||||
|
#ifndef timersub
|
||||||
|
/** Replacement for timersub on platforms that do not have it: sets tvout to
|
||||||
|
* tv1 minus tv2. */
|
||||||
|
#define timersub(tv1,tv2,tvout) \
|
||||||
|
do { \
|
||||||
|
(tvout)->tv_sec = (tv1)->tv_sec - (tv2)->tv_sec; \
|
||||||
|
(tvout)->tv_usec = (tv1)->tv_usec - (tv2)->tv_usec; \
|
||||||
|
if ((tvout)->tv_usec < 0) { \
|
||||||
|
(tvout)->tv_usec += 1000000; \
|
||||||
|
(tvout)->tv_sec--; \
|
||||||
|
} \
|
||||||
|
} while (0)
|
||||||
|
#endif /* !defined(timersub) */
|
||||||
|
|
||||||
|
#ifndef timercmp
|
||||||
|
/** Replacement for timercmp on platforms that do not have it: returns true
|
||||||
|
* iff the relational operator "op" makes the expression tv1 op tv2 true.
|
||||||
|
*
|
||||||
|
* Note that while this definition should work for all boolean operators, some
|
||||||
|
* platforms' native timercmp definitions do not support >=, <=, or ==. So
|
||||||
|
* don't use those.
|
||||||
|
*/
|
||||||
|
#define timercmp(tv1,tv2,op) \
|
||||||
|
(((tv1)->tv_sec == (tv2)->tv_sec) ? \
|
||||||
|
((tv1)->tv_usec op (tv2)->tv_usec) : \
|
||||||
|
((tv1)->tv_sec op (tv2)->tv_sec))
|
||||||
|
#endif /* !defined(timercmp) */
|
||||||
|
|
||||||
|
#endif
|
@ -41,6 +41,7 @@
|
|||||||
#include "or/circuitlist.h"
|
#include "or/circuitlist.h"
|
||||||
#include "or/circuituse.h"
|
#include "or/circuituse.h"
|
||||||
#include "lib/math/fp.h"
|
#include "lib/math/fp.h"
|
||||||
|
#include "lib/time/tvdiff.h"
|
||||||
|
|
||||||
#include "or/crypt_path_st.h"
|
#include "or/crypt_path_st.h"
|
||||||
#include "or/origin_circuit_st.h"
|
#include "or/origin_circuit_st.h"
|
||||||
|
@ -57,6 +57,7 @@
|
|||||||
#include "or/router.h"
|
#include "or/router.h"
|
||||||
#include "or/routerlist.h"
|
#include "or/routerlist.h"
|
||||||
#include "lib/math/fp.h"
|
#include "lib/math/fp.h"
|
||||||
|
#include "lib/time/tvdiff.h"
|
||||||
|
|
||||||
#include "or/cpath_build_state_st.h"
|
#include "or/cpath_build_state_st.h"
|
||||||
#include "or/dir_connection_st.h"
|
#include "or/dir_connection_st.h"
|
||||||
|
@ -39,6 +39,7 @@
|
|||||||
#include "or/routerlist.h"
|
#include "or/routerlist.h"
|
||||||
|
|
||||||
#include "lib/container/order.h"
|
#include "lib/container/order.h"
|
||||||
|
#include "lib/time/tvdiff.h"
|
||||||
|
|
||||||
static void init_geoip_countries(void);
|
static void init_geoip_countries(void);
|
||||||
|
|
||||||
|
@ -31,6 +31,7 @@
|
|||||||
#include "lib/thread/numcpus.h"
|
#include "lib/thread/numcpus.h"
|
||||||
#include "lib/math/fp.h"
|
#include "lib/math/fp.h"
|
||||||
#include "lib/math/laplace.h"
|
#include "lib/math/laplace.h"
|
||||||
|
#include "lib/time/tvdiff.h"
|
||||||
|
|
||||||
#ifdef HAVE_PWD_H
|
#ifdef HAVE_PWD_H
|
||||||
#include <pwd.h>
|
#include <pwd.h>
|
||||||
|
Loading…
Reference in New Issue
Block a user