Module traphandlers

Expand description

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

Structs§

TrapHandlerContext 🔒: Read-only information that is used by signal handlers to handle and recover from traps.
TrapHandlerContextInner 🔒
VMConfig: Configuration for the runtime VM Currently only the stack size is configurable

catch_traps^⚠: Catches any wasm traps that happen within the execution of closure, returning them as a Result.
get_pc_sp 🔒 ^⚠
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).
on_host_stack: When executing on the Wasm stack, temporarily switch back to the host stack to perform an operation that should not be constrainted by the Wasm stack limits.
on_wasm_stack 🔒: Runs the given function on a separate stack so that its stack usage can be bounded. Stack overflows and other traps can be caught and execution returned to the root of the stack.
platform_init 🔒 ^⚠
process_illegal_op 🔒 ^⚠
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.
set_stack_size: Default stack size is 1MB.
trap_handler 🔒 ^⚠
unwind_with 🔒 ^⚠
update_context 🔒 ^⚠
wasmer_call_trampoline^⚠: Call the wasm function pointed to by callee.

TrapHandlerFn: Function which may handle custom signals while processing traps.