pub struct Tunables {
    pub static_memory_bound: u64,
    pub static_memory_offset_guard_size: u64,
    pub dynamic_memory_offset_guard_size: u64,
    pub dynamic_memory_growth_reserve: u64,
    pub generate_native_debuginfo: bool,
    pub parse_wasm_debuginfo: bool,
    pub consume_fuel: bool,
    pub epoch_interruption: bool,
    pub static_memory_bound_is_maximum: bool,
    pub guard_before_linear_memory: bool,
    pub generate_address_map: bool,
    pub debug_adapter_modules: bool,
}
Expand description

Tunable parameters for WebAssembly compilation.

Fields

static_memory_bound: u64

For static heaps, the size in wasm pages of the heap protected by bounds checking.

static_memory_offset_guard_size: u64

The size in bytes of the offset guard for static heaps.

dynamic_memory_offset_guard_size: u64

The size in bytes of the offset guard for dynamic heaps.

dynamic_memory_growth_reserve: u64

The size, in bytes, of reserved memory at the end of a “dynamic” memory, before the guard page, that memory can grow into. This is intended to amortize the cost of memory.grow in the same manner that Vec<T> has space not in use to grow into.

generate_native_debuginfo: bool

Whether or not to generate native DWARF debug information.

parse_wasm_debuginfo: bool

Whether or not to retain DWARF sections in compiled modules.

consume_fuel: bool

Whether or not fuel is enabled for generated code, meaning that fuel will be consumed every time a wasm instruction is executed.

epoch_interruption: bool

Whether or not we use epoch-based interruption.

static_memory_bound_is_maximum: bool

Whether or not to treat the static memory bound as the maximum for unbounded heaps.

guard_before_linear_memory: bool

Whether or not linear memory allocations will have a guard region at the beginning of the allocation in addition to the end.

generate_address_map: bool

Indicates whether an address map from compiled native code back to wasm offsets in the original file is generated.

debug_adapter_modules: bool

Flag for the component module whether adapter modules have debug assertions baked into them.

Trait Implementations

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Auto Trait Implementations

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