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make backtrace collection a Config field rather than a cargo feature (#4183)

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* sorta working in runtime

* wasmtime-runtime: get rid of wasm-backtrace feature

* wasmtime: factor to make backtraces recording optional. not configurable yet

* get rid of wasm-backtrace features

* trap tests: now a Trap optionally contains backtrace

* eliminate wasm-backtrace feature

* code review fixes

* ci: no more wasm-backtrace feature

* c_api: backtraces always enabled

* config: unwind required by backtraces and ref types

* plumbed

* test that disabling backtraces works

* code review comments

* fuzzing generator: wasm_backtrace is a runtime config now

* doc fix
This commit is contained in:
Pat Hickey
2022-05-25 12:25:50 -07:00
committed by GitHub
parent 010e028d67
commit bffce37050
20 changed files with 310 additions and 234 deletions
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24
crates/c-api/src/trap.rs
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@@ -64,7 +64,13 @@ pub extern "C" fn wasm_trap_message(trap: &wasm_trap_t, out: &mut wasm_message_t
#[no_mangle]
pub extern "C" fn wasm_trap_origin(raw: &wasm_trap_t) -> Option<Box<wasm_frame_t>> {
if raw.trap.trace().len() > 0 {
if raw
.trap
.trace()
.expect("backtraces are always enabled")
.len()
> 0
{
Some(Box::new(wasm_frame_t {
trap: raw.trap.clone(),
idx: 0,
@@ -78,7 +84,11 @@ pub extern "C" fn wasm_trap_origin(raw: &wasm_trap_t) -> Option<Box<wasm_frame_t
#[no_mangle]
pub extern "C" fn wasm_trap_trace(raw: &wasm_trap_t, out: &mut wasm_frame_vec_t) {
let vec = (0..raw.trap.trace().len())
let vec = (0..raw
.trap
.trace()
.expect("backtraces are always enabled")
.len())
.map(|idx| {
Some(Box::new(wasm_frame_t {
trap: raw.trap.clone(),
@@ -128,7 +138,7 @@ pub extern "C" fn wasmtime_trap_exit_status(raw: &wasm_trap_t, status: &mut i32)
#[no_mangle]
pub extern "C" fn wasm_frame_func_index(frame: &wasm_frame_t) -> u32 {
frame.trap.trace()[frame.idx].func_index()
frame.trap.trace().expect("backtraces are always enabled")[frame.idx].func_index()
}
#[no_mangle]
@@ -136,7 +146,7 @@ pub extern "C" fn wasmtime_frame_func_name(frame: &wasm_frame_t) -> Option<&wasm
frame
.func_name
.get_or_init(|| {
frame.trap.trace()[frame.idx]
frame.trap.trace().expect("backtraces are always enabled")[frame.idx]
.func_name()
.map(|s| wasm_name_t::from(s.to_string().into_bytes()))
})
@@ -148,7 +158,7 @@ pub extern "C" fn wasmtime_frame_module_name(frame: &wasm_frame_t) -> Option<&wa
frame
.module_name
.get_or_init(|| {
frame.trap.trace()[frame.idx]
frame.trap.trace().expect("backtraces are always enabled")[frame.idx]
.module_name()
.map(|s| wasm_name_t::from(s.to_string().into_bytes()))
})
@@ -157,7 +167,7 @@ pub extern "C" fn wasmtime_frame_module_name(frame: &wasm_frame_t) -> Option<&wa
#[no_mangle]
pub extern "C" fn wasm_frame_func_offset(frame: &wasm_frame_t) -> usize {
frame.trap.trace()[frame.idx]
frame.trap.trace().expect("backtraces are always enabled")[frame.idx]
.func_offset()
.unwrap_or(usize::MAX)
}
@@ -169,7 +179,7 @@ pub extern "C" fn wasm_frame_instance(_arg1: *const wasm_frame_t) -> *mut wasm_i
#[no_mangle]
pub extern "C" fn wasm_frame_module_offset(frame: &wasm_frame_t) -> usize {
frame.trap.trace()[frame.idx]
frame.trap.trace().expect("backtraces are always enabled")[frame.idx]
.module_offset()
.unwrap_or(usize::MAX)
}