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Make full preemption an optional feature.

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This commit is contained in:
losfair
2020-02-01 01:12:06 +08:00
parent a6c55ea548
commit 455783aa21
3 changed files with 79 additions and 48 deletions
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15
lib/runtime-core/src/backend.rs
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@ -109,9 +109,24 @@ impl BackendCompilerConfig {
pub struct CompilerConfig {
/// Symbol information generated from emscripten; used for more detailed debug messages
pub symbol_map: Option<HashMap<u32, String>>,
/// Optionally override the automatically determined memory bound check mode.
pub memory_bound_check_mode: MemoryBoundCheckMode,
/// Whether to generate explicit stack checks against a field in `InternalCtx`.
pub enforce_stack_check: bool,
/// Whether to enable state tracking. Necessary for managed mode.
pub track_state: bool,
/// Whether to enable full preemption checkpoint generation.
///
/// This inserts checkpoints at critical locations such as loop backedges and function calls,
/// allowing non-cooperative unwinding/task switching.
///
/// When enabled there can be a small amount of runtime performance overhead.
pub full_preemption: bool,
pub features: Features,
// Target info. Presently only supported by LLVM.