Struct wasmer_vm::memory::VMSharedMemory
source · pub struct VMSharedMemory {
mmap: Rc<RwLock<WasmMmap>>,
config: VMMemoryConfig,
conditions: ThreadConditions,
}
Expand description
A shared linear memory instance.
Fields§
§mmap: Rc<RwLock<WasmMmap>>
§config: VMMemoryConfig
§conditions: ThreadConditions
Implementations§
sourcepub fn new(
memory: &MemoryType,
style: &MemoryStyle,
) -> Result<Self, MemoryError>
pub fn new( memory: &MemoryType, style: &MemoryStyle, ) -> Result<Self, MemoryError>
Create a new linear memory instance with specified minimum and maximum number of wasm pages.
This creates a Memory
with owned metadata: this can be used to create a memory
that will be imported into Wasm modules.
sourcepub fn new_with_file(
memory: &MemoryType,
style: &MemoryStyle,
backing_file: PathBuf,
memory_type: MmapType,
) -> Result<Self, MemoryError>
pub fn new_with_file( memory: &MemoryType, style: &MemoryStyle, backing_file: PathBuf, memory_type: MmapType, ) -> Result<Self, MemoryError>
Create a new linear memory instance with specified minimum and maximum number of wasm pages that is backed by a file. When set to private the file will be remaing in memory and never flush to disk, when set to shared the memory will be flushed to disk.
This creates a Memory
with owned metadata: this can be used to create a memory
that will be imported into Wasm modules.
sourcepub unsafe fn from_definition(
memory: &MemoryType,
style: &MemoryStyle,
vm_memory_location: NonNull<VMMemoryDefinition>,
) -> Result<Self, MemoryError>
pub unsafe fn from_definition( memory: &MemoryType, style: &MemoryStyle, vm_memory_location: NonNull<VMMemoryDefinition>, ) -> Result<Self, MemoryError>
Create a new linear memory instance with specified minimum and maximum number of wasm pages.
This creates a Memory
with metadata owned by a VM, pointed to by
vm_memory_location
: this can be used to create a local memory.
§Safety
vm_memory_location
must point to a valid location in VM memory.
sourcepub unsafe fn from_definition_with_file(
memory: &MemoryType,
style: &MemoryStyle,
vm_memory_location: NonNull<VMMemoryDefinition>,
backing_file: Option<PathBuf>,
memory_type: MmapType,
) -> Result<Self, MemoryError>
pub unsafe fn from_definition_with_file( memory: &MemoryType, style: &MemoryStyle, vm_memory_location: NonNull<VMMemoryDefinition>, backing_file: Option<PathBuf>, memory_type: MmapType, ) -> Result<Self, MemoryError>
Create a new linear memory instance with specified minimum and maximum number of wasm pages that is backed by a file. When set to private the file will be remaing in memory and never flush to disk, when set to shared the memory will be flushed to disk.
This creates a Memory
with metadata owned by a VM, pointed to by
vm_memory_location
: this can be used to create a local memory.
§Safety
vm_memory_location
must point to a valid location in VM memory.
sourcepub fn copy(&mut self) -> Result<Self, MemoryError>
pub fn copy(&mut self) -> Result<Self, MemoryError>
Copies this memory to a new memory
Trait Implementations§
source§fn clone(&self) -> VMSharedMemory
fn clone(&self) -> VMSharedMemory
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§fn from(mem: VMSharedMemory) -> Self
fn from(mem: VMSharedMemory) -> Self
source§fn style(&self) -> MemoryStyle
fn style(&self) -> MemoryStyle
Returns the memory style for this memory.
source§fn 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.
source§fn 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
source§fn vmmemory(&self) -> NonNull<VMMemoryDefinition>
fn vmmemory(&self) -> NonNull<VMMemoryDefinition>
Return a VMMemoryDefinition
for exposing the memory to compiled wasm code.
source§fn try_clone(&self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
fn try_clone(&self) -> Result<Box<dyn LinearMemory + 'static>, MemoryError>
Shared memory can always be cloned
source§fn 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
source§fn 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
source§fn 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>
source§fn thread_conditions(&self) -> Option<&ThreadConditions>
fn thread_conditions(&self) -> Option<&ThreadConditions>
Auto Trait Implementations§
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)