| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (c) 2015-2018 Philippe Proulx <pproulx@efficios.com> |
| 5 | */ |
| 6 | |
| 7 | #define BT_LOG_TAG "LIB/UTIL" |
| 8 | #include "lib/logging.h" |
| 9 | |
| 10 | #include "lib/assert-cond.h" |
| 11 | #include <stdbool.h> |
| 12 | #include <inttypes.h> |
| 13 | #include <babeltrace2/babeltrace.h> |
| 14 | #include "lib/trace-ir/utils.h" |
| 15 | |
| 16 | BT_EXPORT |
| 17 | bt_util_clock_cycles_to_ns_from_origin_status |
| 18 | bt_util_clock_cycles_to_ns_from_origin(uint64_t cycles, |
| 19 | uint64_t frequency, int64_t offset_seconds, |
| 20 | uint64_t offset_cycles, int64_t *ns) |
| 21 | { |
| 22 | bool overflows; |
| 23 | int64_t base_offset_ns; |
| 24 | bt_util_clock_cycles_to_ns_from_origin_status status = |
| 25 | BT_FUNC_STATUS_OK; |
| 26 | int ret; |
| 27 | |
| 28 | BT_ASSERT_PRE_NO_ERROR(); |
| 29 | BT_ASSERT_PRE_NON_NULL("nanoseconds-output", ns, |
| 30 | "Nanoseconds (output)"); |
| 31 | BT_ASSERT_PRE("valid-frequency", |
| 32 | frequency != UINT64_C(-1) && frequency != 0, |
| 33 | "Invalid frequency: freq=%" PRIu64, frequency); |
| 34 | BT_ASSERT_PRE("offset-cycles-lt-frequency", |
| 35 | offset_cycles < frequency, |
| 36 | "Offset (cycles) is greater than frequency: " |
| 37 | "offset-cycles=%" PRIu64 ", freq=%" PRIu64, |
| 38 | offset_cycles, frequency); |
| 39 | |
| 40 | overflows = bt_util_get_base_offset_ns(offset_seconds, offset_cycles, |
| 41 | frequency, &base_offset_ns); |
| 42 | if (overflows) { |
| 43 | status = BT_FUNC_STATUS_OVERFLOW_ERROR; |
| 44 | goto end; |
| 45 | } |
| 46 | |
| 47 | ret = bt_util_ns_from_origin_inline(base_offset_ns, frequency, cycles, ns); |
| 48 | if (ret) { |
| 49 | status = BT_FUNC_STATUS_OVERFLOW_ERROR; |
| 50 | } |
| 51 | |
| 52 | end: |
| 53 | return status; |
| 54 | } |