/src/libgcrypt/random/jitterentropy-health.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright (C) 2021, Stephan Mueller <smueller@chronox.de> |
3 | | * |
4 | | * License: see LICENSE file in root directory |
5 | | * |
6 | | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
7 | | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
8 | | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF |
9 | | * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE |
10 | | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
11 | | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
12 | | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
13 | | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
14 | | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
15 | | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
16 | | * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH |
17 | | * DAMAGE. |
18 | | */ |
19 | | |
20 | | #ifndef JITTERENTROPY_HEALTH_H |
21 | | #define JITTERENTROPY_HEALTH_H |
22 | | |
23 | | #ifdef __cplusplus |
24 | | extern "C" |
25 | | { |
26 | | #endif |
27 | | |
28 | | static inline uint64_t jent_delta(uint64_t prev, uint64_t next) |
29 | 0 | { |
30 | 0 | return (next - prev); |
31 | 0 | } |
32 | | |
33 | | #ifdef JENT_HEALTH_LAG_PREDICTOR |
34 | | void jent_lag_init(struct rand_data *ec, unsigned int osr); |
35 | | #else /* JENT_HEALTH_LAG_PREDICTOR */ |
36 | | static inline void jent_lag_init(struct rand_data *ec, unsigned int osr) |
37 | | { |
38 | | (void)ec; |
39 | | (void)osr; |
40 | | } |
41 | | #endif /* JENT_HEALTH_LAG_PREDICTOR */ |
42 | | |
43 | | void jent_apt_init(struct rand_data *ec, unsigned int osr); |
44 | | unsigned int jent_stuck(struct rand_data *ec, uint64_t current_delta); |
45 | | unsigned int jent_health_failure(struct rand_data *ec); |
46 | | |
47 | | #ifdef __cplusplus |
48 | | } |
49 | | #endif |
50 | | |
51 | | #endif /* JITTERENTROPY_HEALTH_H */ |