Trait wasmer_vm::memory::LinearMemory
source · pub trait LinearMemory{
// Required methods
fn ty(&self) -> MemoryType;
fn size(&self) -> Pages;
fn style(&self) -> MemoryStyle;
fn grow(&mut self, delta: Pages) -> Result<Pages, MemoryError>;
fn vmmemory(&self) -> NonNull<VMMemoryDefinition>;
fn try_clone(&self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>;
fn copy(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>;
// Provided methods
fn grow_at_least(&mut self, _min_size: u64) -> Result<(), MemoryError> { ... }
fn reset(&mut self) -> Result<(), MemoryError> { ... }
fn do_wait(
&mut self,
_dst: NotifyLocation,
_timeout: Option<Duration>,
) -> Result<u32, WaiterError> { ... }
fn do_notify(&mut self, _dst: NotifyLocation, _count: u32) -> u32 { ... }
fn thread_conditions(&self) -> Option<&ThreadConditions> { ... }
}
Expand description
Represents memory that is used by the WebAsssembly module
Required Methods§
sourcefn style(&self) -> MemoryStyle
fn style(&self) -> MemoryStyle
Returns the memory style for this memory.
sourcefn grow(&mut self, delta: Pages) -> Result<Pages, MemoryError>
fn grow(&mut self, delta: Pages) -> Result<Pages, MemoryError>
Grow memory by the specified amount of wasm pages.
Returns None
if memory can’t be grown by the specified amount
of wasm pages.
sourcefn vmmemory(&self) -> NonNull<VMMemoryDefinition>
fn vmmemory(&self) -> NonNull<VMMemoryDefinition>
Return a VMMemoryDefinition
for exposing the memory to compiled wasm code.
sourcefn try_clone(&self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
fn try_clone(&self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
Attempts to clone this memory (if its clonable)
sourcefn copy(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
fn copy(&mut self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
Copies this memory to a new memory
Provided Methods§
sourcefn grow_at_least(&mut self, _min_size: u64) -> Result<(), MemoryError>
fn grow_at_least(&mut self, _min_size: u64) -> Result<(), MemoryError>
Grows the memory to at least a minimum size. If the memory is already big enough for the min size then this function does nothing
sourcefn reset(&mut self) -> Result<(), MemoryError>
fn reset(&mut self) -> Result<(), MemoryError>
Resets the memory back to zero length
sourcefn do_wait(
&mut self,
_dst: NotifyLocation,
_timeout: Option<Duration>,
) -> Result<u32, WaiterError>
fn do_wait( &mut self, _dst: NotifyLocation, _timeout: Option<Duration>, ) -> Result<u32, WaiterError>
Add current thread to the waiter hash, and wait until notified or timout. Return 0 if the waiter has been notified, 2 if the timeout occured, or None if en error happened
sourcefn do_notify(&mut self, _dst: NotifyLocation, _count: u32) -> u32
fn do_notify(&mut self, _dst: NotifyLocation, _count: u32) -> u32
Notify waiters from the wait list. Return the number of waiters notified
sourcefn thread_conditions(&self) -> Option<&ThreadConditions>
fn thread_conditions(&self) -> Option<&ThreadConditions>
Access the internal atomics handler.
Will be None
if the memory does not support atomics.