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#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
#![warn(unused_import_braces)]
#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
#![cfg_attr(
feature = "cargo-clippy",
allow(clippy::new_without_default, clippy::new_without_default)
)]
#![cfg_attr(
feature = "cargo-clippy",
warn(
clippy::float_arithmetic,
clippy::mut_mut,
clippy::nonminimal_bool,
clippy::map_unwrap_or,
clippy::clippy::print_stdout,
clippy::unicode_not_nfc,
clippy::use_self
)
)]
use anyhow::Error;
use std::sync::atomic::{AtomicU64, AtomicUsize, Ordering};
use std::sync::Arc;
use wasmtime_environ::DefinedFuncIndex;
use wasmtime_environ::DefinedMemoryIndex;
use wasmtime_environ::FunctionInfo;
use wasmtime_environ::SignatureIndex;
#[macro_use]
mod trampolines;
#[cfg(feature = "component-model")]
pub mod component;
mod export;
mod externref;
mod imports;
mod instance;
mod memory;
mod mmap;
mod mmap_vec;
mod table;
mod traphandlers;
mod vmcontext;
pub mod debug_builtins;
pub mod libcalls;
pub use wasmtime_jit_debug::gdb_jit_int::GdbJitImageRegistration;
pub use crate::export::*;
pub use crate::externref::*;
pub use crate::imports::Imports;
pub use crate::instance::{
allocate_single_memory_instance, InstanceAllocationRequest, InstanceAllocator, InstanceHandle,
InstantiationError, LinkError, OnDemandInstanceAllocator, StorePtr,
};
#[cfg(feature = "pooling-allocator")]
pub use crate::instance::{InstanceLimits, PoolingAllocationStrategy, PoolingInstanceAllocator};
pub use crate::memory::{
DefaultMemoryCreator, Memory, RuntimeLinearMemory, RuntimeMemoryCreator, SharedMemory,
};
pub use crate::mmap::Mmap;
pub use crate::mmap_vec::MmapVec;
pub use crate::table::{Table, TableElement};
pub use crate::trampolines::prepare_host_to_wasm_trampoline;
pub use crate::traphandlers::{
catch_traps, init_traps, raise_lib_trap, raise_user_trap, resume_panic, tls_eager_initialize,
Backtrace, SignalHandler, TlsRestore, Trap, TrapReason,
};
pub use crate::vmcontext::{
VMCallerCheckedAnyfunc, VMContext, VMFunctionBody, VMFunctionImport, VMGlobalDefinition,
VMGlobalImport, VMHostFuncContext, VMInvokeArgument, VMMemoryDefinition, VMMemoryImport,
VMOpaqueContext, VMRuntimeLimits, VMSharedSignatureIndex, VMTableDefinition, VMTableImport,
VMTrampoline, ValRaw,
};
mod module_id;
pub use module_id::{CompiledModuleId, CompiledModuleIdAllocator};
#[cfg(memory_init_cow)]
mod cow;
#[cfg(memory_init_cow)]
pub use crate::cow::{MemoryImage, MemoryImageSlot, ModuleMemoryImages};
#[cfg(not(memory_init_cow))]
mod cow_disabled;
#[cfg(not(memory_init_cow))]
pub use crate::cow_disabled::{MemoryImage, MemoryImageSlot, ModuleMemoryImages};
pub const VERSION: &str = env!("CARGO_PKG_VERSION");
pub unsafe trait Store {
fn vmruntime_limits(&self) -> *mut VMRuntimeLimits;
fn epoch_ptr(&self) -> *const AtomicU64;
fn externref_activations_table(
&mut self,
) -> (&mut VMExternRefActivationsTable, &dyn ModuleInfoLookup);
fn memory_growing(
&mut self,
current: usize,
desired: usize,
maximum: Option<usize>,
) -> Result<bool, Error>;
fn memory_grow_failed(&mut self, error: &Error);
fn table_growing(
&mut self,
current: u32,
desired: u32,
maximum: Option<u32>,
) -> Result<bool, Error>;
fn table_grow_failed(&mut self, error: &Error);
fn out_of_gas(&mut self) -> Result<(), Error>;
fn new_epoch(&mut self) -> Result<u64, Error>;
}
pub trait ModuleRuntimeInfo: Send + Sync + 'static {
fn module(&self) -> &Arc<wasmtime_environ::Module>;
fn signature(&self, index: SignatureIndex) -> VMSharedSignatureIndex;
fn image_base(&self) -> usize;
fn function_info(&self, func_index: DefinedFuncIndex) -> &FunctionInfo;
fn memory_image(&self, memory: DefinedMemoryIndex)
-> anyhow::Result<Option<&Arc<MemoryImage>>>;
fn unique_id(&self) -> Option<CompiledModuleId>;
fn wasm_data(&self) -> &[u8];
fn signature_ids(&self) -> &[VMSharedSignatureIndex];
}
pub fn page_size() -> usize {
static PAGE_SIZE: AtomicUsize = AtomicUsize::new(0);
return match PAGE_SIZE.load(Ordering::Relaxed) {
0 => {
let size = get_page_size();
assert!(size != 0);
PAGE_SIZE.store(size, Ordering::Relaxed);
size
}
n => n,
};
#[cfg(windows)]
fn get_page_size() -> usize {
use std::mem::MaybeUninit;
use windows_sys::Win32::System::SystemInformation::*;
unsafe {
let mut info = MaybeUninit::uninit();
GetSystemInfo(info.as_mut_ptr());
info.assume_init_ref().dwPageSize as usize
}
}
#[cfg(unix)]
fn get_page_size() -> usize {
unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize }
}
}