GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — arrayfire-rust/src/core/error.rs at master · arrayfire/arrayfire-rust

Expand file tree

/

error.rs

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
111 lines (98 loc) · 2.96 KB
/

error.rs

Copy path

File metadata and controls

111 lines (98 loc) · 2.96 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
use super::defines::AfError;
use super::util::{dim_t, free_host};
use libc::c_char;
use std::ffi::CStr;
use std::ops::{Deref, DerefMut};
use std::sync::RwLock;
extern "C" {
fn af_get_last_error(str: *mut *mut c_char, len: *mut dim_t);
}
/// Signature of error handling callback function
pub type ErrorCallback = fn(AfError);
/// Structure holding handle to callback function
pub struct Callback {
cb: ErrorCallback,
}
impl Callback {
/// Associated function to create a new Callback object
pub fn new(callback: ErrorCallback) -> Self {
Self { cb: callback }
}
/// call invokes the error callback with `error_code`.
pub fn call(&self, error_code: AfError) {
(self.cb)(error_code)
}
}
/// Default error handling callback provided by ArrayFire crate
pub fn handle_error_general(error_code: AfError) {
match error_code {
AfError::SUCCESS => {} /* No-op */
_ => panic!(
"Error message: {}\nLast error: {}",
error_code,
get_last_error()
),
}
}
lazy_static! {
static ref ERROR_HANDLER_LOCK: RwLock<Callback> =
RwLock::new(Callback::new(handle_error_general));
}
/// Register user provided error handler
///
/// # Examples
/// ```
/// #[macro_use]
/// extern crate arrayfire;
///
/// use arrayfire::{AfError, Callback, info, register_error_handler};
/// use std::error::Error;
///
/// fn handle_error(error_code: AfError) {
/// match error_code {
/// AfError::SUCCESS => {}, /* No-op */
/// _ => panic!("Error message: {}", error_code),
/// }
/// }
///
/// fn main() {
/// //Registering the error handler should be the first call
/// //before any other functions are called if your version
/// //of error is to be used for subsequent function calls
/// register_error_handler(Callback::new(handle_error));
///
/// info();
/// }
/// ```
#[allow(clippy::match_wild_err_arm)]
pub fn register_error_handler(cb_value: Callback) {
let mut gaurd = match ERROR_HANDLER_LOCK.write() {
Ok(g) => g,
Err(_) => panic!("Failed to acquire lock to register error handler"),
};
*gaurd.deref_mut() = cb_value;
}
/// Default error handler for error code returned by ArrayFire FFI calls
#[allow(non_snake_case)]
#[allow(clippy::match_wild_err_arm)]
pub fn HANDLE_ERROR(error_code: AfError) {
let gaurd = match ERROR_HANDLER_LOCK.read() {
Ok(g) => g,
Err(_) => panic!("Failed to acquire lock while handling FFI return value"),
};
(*gaurd.deref()).call(error_code);
}
/// Fetch last error description as String
pub fn get_last_error() -> String {
let mut result: String = String::from("No Last Error");
let mut tmp: *mut c_char = ::std::ptr::null_mut();
let mut len: dim_t = 0;
unsafe {
af_get_last_error(&mut tmp, &mut len as *mut dim_t);
if len > 0 {
result = CStr::from_ptr(tmp).to_string_lossy().into_owned();
free_host(tmp);
}
}
result
}
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.