| 1 | use std::panic; |
| 2 | use std::process; |
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| 3 | |
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| 4 | use ffi::*; |
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| 5 | use libc::{c_int, c_void}; |
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| 6 | |
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| 7 | pub struct Interrupt { |
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| 8 | pub interrupt: AVIOInterruptCB, |
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| 9 | } |
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| 10 | |
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| 11 | extern "C" fn callback<F>(opaque: *mut c_void) -> c_int |
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| 12 | where |
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| 13 | F: FnMut() -> bool, |
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| 14 | { |
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| 15 | // Clippy suggests to remove &mut, but it doesn't compile then (move occurs because value has type `F`, which does not implement the `Copy` trait) |
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| 16 | #[allow (clippy::needless_borrow)] |
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| 17 | match panic::catch_unwind(|| (unsafe { &mut *(opaque as *mut F) })()) { |
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| 18 | Ok(ret: bool) => ret as c_int, |
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| 19 | Err(_) => process::abort(), |
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| 20 | } |
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| 21 | } |
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| 22 | |
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| 23 | pub fn new<F>(opaque: Box<F>) -> Interrupt |
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| 24 | where |
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| 25 | F: FnMut() -> bool, |
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| 26 | { |
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| 27 | let interrupt_cb = AVIOInterruptCB { |
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| 28 | callback: Some(callback::<F>), |
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| 29 | opaque: Box::into_raw(opaque) as *mut c_void, |
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| 30 | }; |
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| 31 | Interrupt { |
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| 32 | interrupt: interrupt_cb, |
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| 33 | } |
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| 34 | } |
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| 35 | |
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