diff options
Diffstat (limited to 'src/basic/time-util.h')
| -rw-r--r-- | src/basic/time-util.h | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/basic/time-util.h b/src/basic/time-util.h index b37d5ad5dc..9894e626c5 100644 --- a/src/basic/time-util.h +++ b/src/basic/time-util.h @@ -1,5 +1,3 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - #pragma once /*** @@ -69,7 +67,7 @@ typedef struct dual_timestamp { #define FORMAT_TIMESTAMP_RELATIVE_MAX 256 #define FORMAT_TIMESPAN_MAX 64 -#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) +#define TIME_T_MAX (time_t)((UINTMAX_C(1) << ((sizeof(time_t) << 3) - 1)) - 1) #define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0ULL, 0ULL }) @@ -92,8 +90,6 @@ struct timespec *timespec_store(struct timespec *ts, usec_t u); usec_t timeval_load(const struct timeval *tv) _pure_; struct timeval *timeval_store(struct timeval *tv, usec_t u); -nsec_t timespec_load_nsec(const struct timespec *ts) _pure_; - char *format_timestamp(char *buf, size_t l, usec_t t); char *format_timestamp_utc(char *buf, size_t l, usec_t t); char *format_timestamp_us(char *buf, size_t l, usec_t t); @@ -140,3 +136,16 @@ static inline usec_t usec_add(usec_t a, usec_t b) { return c; } + +static inline usec_t usec_sub(usec_t timestamp, int64_t delta) { + if (delta < 0) + return usec_add(timestamp, (usec_t) (-delta)); + + if (timestamp == USEC_INFINITY) /* Make sure infinity doesn't degrade */ + return USEC_INFINITY; + + if (timestamp < (usec_t) delta) + return 0; + + return timestamp - delta; +} |