1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
use mesa_rust_gen::*;
use std::ffi::CString;
use std::ops::Deref;
use std::ptr;
use std::ptr::NonNull;
use std::slice;
pub struct DiskCacheBorrowed {
cache: NonNull<disk_cache>,
}
pub struct DiskCache {
inner: DiskCacheBorrowed,
}
// disk_cache is thread safe
unsafe impl Sync for DiskCacheBorrowed {}
impl DiskCacheBorrowed {
pub fn from_ptr(cache: *mut disk_cache) -> Option<Self> {
NonNull::new(cache).map(|c| Self { cache: c })
}
pub fn put(&self, data: &[u8], key: &mut cache_key) {
unsafe {
disk_cache_put(
self.cache.as_ptr(),
key,
data.as_ptr().cast(),
data.len(),
ptr::null_mut(),
);
}
}
pub fn get(&self, key: &mut cache_key) -> Option<DiskCacheEntry> {
let mut size = 0;
unsafe {
let data = disk_cache_get(self.cache.as_ptr(), key, &mut size);
if data.is_null() {
None
} else {
Some(DiskCacheEntry {
data: slice::from_raw_parts_mut(data.cast(), size),
})
}
}
}
pub fn gen_key(&self, data: &[u8]) -> cache_key {
let mut key = cache_key::default();
unsafe {
disk_cache_compute_key(
self.cache.as_ptr(),
data.as_ptr().cast(),
data.len(),
&mut key,
);
}
key
}
pub fn as_ptr(s: &Option<Self>) -> *mut disk_cache {
if let Some(s) = s {
s.cache.as_ptr()
} else {
ptr::null_mut()
}
}
}
impl DiskCache {
pub fn new(name: &str, driver_id: &str, flags: u64) -> Option<Self> {
let c_name = CString::new(name).unwrap();
let c_id = CString::new(driver_id).unwrap();
let cache = unsafe { disk_cache_create(c_name.as_ptr(), c_id.as_ptr(), flags) };
DiskCacheBorrowed::from_ptr(cache).map(|c| Self { inner: c })
}
}
impl Deref for DiskCache {
type Target = DiskCacheBorrowed;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl Drop for DiskCache {
fn drop(&mut self) {
unsafe {
disk_cache_destroy(self.cache.as_ptr());
}
}
}
pub struct DiskCacheEntry<'a> {
data: &'a mut [u8],
}
impl<'a> Deref for DiskCacheEntry<'a> {
type Target = [u8];
fn deref(&self) -> &Self::Target {
self.data
}
}
impl<'a> Drop for DiskCacheEntry<'a> {
fn drop(&mut self) {
unsafe {
free(self.data.as_mut_ptr().cast());
}
}
}
|
