[−][src]Struct wasmer_runtime::Ctx
The context of the currently running WebAssembly instance.
Fields
data: *mut c_void
data_finalizer: Option<extern "C" fn(*mut c_void)>
Methods
impl Ctx
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pub fn memory(&'a self, mem_index: u32) -> &'a [u8]
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This exposes the specified memory of the WebAssembly instance as a immutable slice.
WebAssembly will soon support multiple linear memories, so this forces the user to specify.
Usage:
fn read_memory(ctx: &Ctx) -> u8 { let first_memory = ctx.memory(0); // Read the first byte of that linear memory. first_memory[0] }
pub fn memory_mut(&'a mut self, mem_index: u32) -> &'a mut [u8]
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This exposes the specified memory of the WebAssembly instance as a mutable slice.
WebAssembly will soon support multiple linear memories, so this forces the user to specify.
Usage:
extern fn host_func(ctx: &mut Ctx) { let first_memory = ctx.memory_mut(0); // Set the first byte of that linear memory. first_memory[0] = 42; }
Trait Implementations
Auto Trait Implementations
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,