69 lines
1.7 KiB
Rust
69 lines
1.7 KiB
Rust
#[doc = "Unsafe debugging functions for inspecting values."];
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import unsafe::reinterpret_cast;
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export debug_tydesc;
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export debug_opaque;
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export debug_box;
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export debug_tag;
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export debug_fn;
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export ptr_cast;
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export breakpoint;
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#[abi = "cdecl"]
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native mod rustrt {
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fn debug_tydesc(td: *sys::type_desc);
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fn debug_opaque(td: *sys::type_desc, x: *());
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fn debug_box(td: *sys::type_desc, x: *());
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fn debug_tag(td: *sys::type_desc, x: *());
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fn debug_fn(td: *sys::type_desc, x: *());
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fn debug_ptrcast(td: *sys::type_desc, x: *()) -> *();
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fn rust_dbg_breakpoint();
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}
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fn debug_tydesc<T>() {
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rustrt::debug_tydesc(sys::get_type_desc::<T>());
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}
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fn debug_opaque<T>(x: T) {
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rustrt::debug_opaque(sys::get_type_desc::<T>(), ptr::addr_of(x) as *());
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}
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fn debug_box<T>(x: @T) {
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rustrt::debug_box(sys::get_type_desc::<T>(), ptr::addr_of(x) as *());
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}
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fn debug_tag<T>(x: T) {
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rustrt::debug_tag(sys::get_type_desc::<T>(), ptr::addr_of(x) as *());
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}
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fn debug_fn<T>(x: T) {
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rustrt::debug_fn(sys::get_type_desc::<T>(), ptr::addr_of(x) as *());
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}
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unsafe fn ptr_cast<T, U>(x: @T) -> @U {
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reinterpret_cast(
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rustrt::debug_ptrcast(sys::get_type_desc::<T>(),
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reinterpret_cast(x)))
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}
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#[doc = "Triggers a debugger breakpoint"]
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fn breakpoint() {
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rustrt::rust_dbg_breakpoint();
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}
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#[test]
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fn test_breakpoint_should_not_abort_process_when_not_under_gdb() {
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// Triggering a breakpoint involves raising SIGTRAP, which terminates
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// the process under normal circumstances
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breakpoint();
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}
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// Local Variables:
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// mode: rust;
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// End:
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