Struct wasmer_vm::trap::traphandlers::TrapHandlerContext

struct TrapHandlerContext {
    inner: *const u8,
    handle_trap: fn(_: *const u8, _: usize, _: usize, _: Option<usize>, _: Option<TrapCode>, _: &mut dyn FnMut(TrapHandlerRegs)) -> bool,
    custom_trap: Option<*const TrapHandlerFn<'static>>,
}

Read-only information that is used by signal handlers to handle and recover from traps.

Fields

inner: *const u8

handle_trap: fn(_: *const u8, _: usize, _: usize, _: Option<usize>, _: Option<TrapCode>, _: &mut dyn FnMut(TrapHandlerRegs)) -> bool

custom_trap: Option<*const TrapHandlerFn<'static>>

Implementations

impl TrapHandlerContext

fn install<T, R>( custom_trap: Option<*const TrapHandlerFn<'static>>, coro_trap_handler: CoroutineTrapHandler<Result<T, UnwindReason>>, f: impl FnOnce() -> R, ) -> R

Runs the given function with a trap handler context. The previous trap handler context is preserved and restored afterwards.

unsafe fn handle_trap( pc: usize, sp: usize, maybe_fault_address: Option<usize>, trap_code: Option<TrapCode>, update_regs: impl FnMut(TrapHandlerRegs), call_handler: impl Fn(&TrapHandlerFn<'static>) -> bool, ) -> bool

Attempts to handle the trap if it’s a wasm trap.