Module wasmer_vm::traphandlers

WebAssembly trap handling, which is built on top of the lower-level signalhandling mechanisms.

Structs

CallThreadState

Temporary state stored on the stack which is registered in the tls module below for calls into wasm.

TlsRestore

Opaque state used to help control TLS state across stack switches for async support.

Enums

Trap

Stores trace message with backtrace.

Traits

TrapHandler

A package of functionality needed by catch_traps to figure out what to do when handling a trap.

Functions

catch_traps^⚠

Catches any wasm traps that happen within the execution of closure, returning them as a Result.

catch_traps_with_result^⚠

Catches any wasm traps that happen within the execution of closure, returning them as a Result, with the closure contents.

get_trap_handler

Returns pointer to the trap handler used in VMContext.

init_traps

This function is required to be called before any WebAssembly is entered. This will configure global state such as signal handlers to prepare the process to receive wasm traps.

lazy_per_thread_init

A module for registering a custom alternate signal stack (sigaltstack).

raise_lib_trap^⚠

Raises a trap from inside library code immediately.

raise_user_trap^⚠

Raises a user-defined trap immediately.

resume_panic^⚠

Carries a Rust panic across wasm code and resumes the panic on the other side.

wasmer_call_trampoline^⚠

Call the wasm function pointed to by callee.

Type Definitions

TrapHandlerFn

Function which may handle custom signals while processing traps.