diff options
Diffstat (limited to 'libnetdata/storage_number/storage_number.h')
-rw-r--r-- | libnetdata/storage_number/storage_number.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/libnetdata/storage_number/storage_number.h b/libnetdata/storage_number/storage_number.h index 4ad7ff624..4101f69e0 100644 --- a/libnetdata/storage_number/storage_number.h +++ b/libnetdata/storage_number/storage_number.h @@ -60,17 +60,24 @@ typedef long double collected_number; typedef uint32_t storage_number; #define STORAGE_NUMBER_FORMAT "%u" -#define SN_EXISTS (1 << 24) // the value exists +#define SN_ANOMALY_BIT (1 << 24) // the anomaly bit of the value #define SN_EXISTS_RESET (1 << 25) // the value has been overflown #define SN_EXISTS_100 (1 << 26) // very large value (multiplier is 100 instead of 10) -// extract the flags -#define get_storage_number_flags(value) ((((storage_number)(value)) & (1 << 24)) | (((storage_number)(value)) & (1 << 25)) | (((storage_number)(value)) & (1 << 26))) +#define SN_DEFAULT_FLAGS SN_ANOMALY_BIT + #define SN_EMPTY_SLOT 0x00000000 +// When the calculated number is zero and the value is anomalous (ie. it's bit +// is zero) we want to return a storage_number representation that is +// different from the empty slot. We achieve this by mapping zero to +// SN_EXISTS_100. Unpacking the SN_EXISTS_100 value will return zero because +// its fraction field (as well as its exponent factor field) will be zero. +#define SN_ANOMALOUS_ZERO SN_EXISTS_100 + // checks -#define does_storage_number_exist(value) ((get_storage_number_flags(value) != 0)?1:0) -#define did_storage_number_reset(value) ((get_storage_number_flags(value) == SN_EXISTS_RESET)?1:0) +#define does_storage_number_exist(value) (((storage_number) (value)) != SN_EMPTY_SLOT) +#define did_storage_number_reset(value) ((((storage_number) (value)) & SN_EXISTS_RESET) != 0) storage_number pack_storage_number(calculated_number value, uint32_t flags); calculated_number unpack_storage_number(storage_number value); |