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mirror of https://github.com/bspeice/qadapt synced 2024-11-21 13:28:11 -05:00

Strip QADAPT symbols for release-mode builds

This commit is contained in:
Bradlee Speice 2018-11-13 22:30:41 -05:00
parent 84739c4dd1
commit af2781b453
4 changed files with 81 additions and 59 deletions

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@ -20,6 +20,31 @@ type G = proc_macro::Group;
type I = proc_macro::Ident;
type P = proc_macro::Punct;
fn release_guard(fn_name: &str) -> TokenStream {
let rel = I::new("release", Span::call_site());
let not_rel: Vec<TokenTree> = vec![
I::new("not", Span::call_site()).into(),
G::new(Delimiter::Parenthesis, TokenTree::Ident(rel).into()).into()
];
let cfg_not_rel: Vec<TokenTree> = vec![
I::new("cfg", Span::call_site()).into(),
G::new(Delimiter::Parenthesis, TS::from_iter(not_rel.into_iter())).into()
];
let guarded: Vec<TokenTree> = vec![
P::new('#', Spacing::Alone).into(),
G::new(Delimiter::Bracket, TS::from_iter(cfg_not_rel.into_iter())).into(),
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new("qadapt", Span::call_site()).into(),
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new(fn_name, Span::call_site()).into(),
G::new(Delimiter::Parenthesis, TokenStream::new()).into(),
];
TS::from_iter(guarded.into_iter())
}
fn protected_body(fn_name: &str, args: G) -> TokenTree {
let mut args_filtered = Vec::new();
let mut waiting_for_comma = false;
@ -40,30 +65,16 @@ fn protected_body(fn_name: &str, args: G) -> TokenTree {
}
}
let args_group = G::new(Delimiter::Parenthesis, TS::from_iter(args_filtered));
let tt: Vec<TT> = vec![
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new("qadapt", Span::call_site()).into(),
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new("enter_protected", Span::call_site()).into(),
G::new(Delimiter::Parenthesis, TokenStream::new()).into(),
P::new(';', Spacing::Alone).into(),
G::new(Delimiter::Brace, release_guard("enter_protected")).into(),
I::new("let", Span::call_site()).into(),
I::new("__ret__", Span::call_site()).into(),
P::new('=', Spacing::Alone).into(),
I::new(fn_name, Span::call_site()).into(),
args_group.into(),
P::new(';', Spacing::Alone).into(),
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new("qadapt", Span::call_site()).into(),
P::new(':', Spacing::Joint).into(),
P::new(':', Spacing::Alone).into(),
I::new("exit_protected", Span::call_site()).into(),
G::new(Delimiter::Parenthesis, TokenStream::new()).into(),
P::new(';', Spacing::Alone).into(),
G::new(Delimiter::Brace, release_guard("exit_protected")).into(),
I::new("__ret__", Span::call_site()).into(),
];

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@ -3,12 +3,8 @@
//! This allocator is a helper for writing high-performance code that is allocation/drop free;
//! for functions annotated with `#[allocate_panic]`, QADAPT will detect when allocations/drops
//! happen during their execution (and execution of any functions they call) and throw a
//! thread panic if this occurs.
//!
//! Because QADAPT panics on allocation and is rather slow (for an allocator) it is **strongly**
//! recommended that QADAPT (the allocator) be used only in code tests. Functions annotated with
//! `#[allocate_panic]` will have no side effects if the QADAPT allocator is not being used,
//! so the attribute is safe to leave everywhere.
//! thread panic if this occurs. QADAPT-related code is stripped out during release builds,
//! so no worries about random allocations crashing in production.
//!
//! Currently this crate is Nightly-only, but will work once `const fn` is in Stable.
//!

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@ -3,6 +3,7 @@ extern crate qadapt;
use qadapt::enter_protected;
use qadapt::exit_protected;
use qadapt::protection_level;
use qadapt::QADAPT;
#[global_allocator]
@ -59,6 +60,11 @@ fn test_vec_push() {
let mut v = Vec::new();
enter_protected();
v.push(0);
// We don't make it here in debug mode, but in release mode,
// pushing one element doesn't trigger an allocation. Instead,
// we use a box to force it onto the heap
assert_eq!(protection_level(), 1);
let _b = Box::new(v);
}
#[test]
@ -89,7 +95,12 @@ fn test_vec_new() {
#[should_panic]
fn test_vec_with_one() {
enter_protected();
let _v: Vec<u8> = Vec::with_capacity(1);
let v: Vec<u8> = Vec::with_capacity(1);
// We don't make it here in debug mode, but in release mode,
// pushing one element doesn't trigger an allocation. Instead,
// we use a box to force it onto the heap
assert_eq!(protection_level(), 1);
let _b = Box::new(v);
}
#[test]

View File

@ -7,64 +7,58 @@ use qadapt::QADAPT;
#[global_allocator]
static Q: QADAPT = QADAPT;
#[allocate_panic]
fn allocates() {
assert_eq!(::qadapt::protection_level(), 1);
// Without boxing, release profile can actually optimize out the allocation
let mut v = Box::new(Vec::new());
v.push(1);
}
#[allocate_panic]
fn no_allocate() {
#[cfg(not(release))]
{
let _v = 0;
}
assert_eq!(::qadapt::protection_level(), 1);
let _v: Vec<()> = Vec::with_capacity(0);
}
#[allocate_panic]
fn no_allocate_ret() -> bool {
return true;
}
#[allocate_panic]
fn no_allocate_implicit_ret() -> bool {
true
}
#[allocate_panic]
fn no_allocate_arg(b: bool) -> bool {
b
}
#[allocate_panic]
fn no_allocate_args(_b: bool, _u: usize, i: i64) -> i64 {
i
}
#[allocate_panic]
fn return_result(r: Result<usize, io::Error>) -> Result<Result<usize, io::Error>, ()> {
Ok(r)
}
#[test]
fn macro_no_allocate() {
no_allocate();
}
#[allocate_panic]
fn allocates() {
assert_eq!(::qadapt::protection_level(), 1);
// Without boxing, release profile can actually optimize out the allocation
let mut v = Box::new(Vec::new());
v.push(1);
}
#[test]
#[should_panic]
fn macro_allocates() {
allocates();
}
#[allocate_panic]
fn no_allocate_ret() -> bool {
return true;
}
#[test]
fn macro_return() {
assert!(no_allocate_ret());
}
#[allocate_panic]
fn no_allocate_implicit_ret() -> bool {
true
}
#[test]
fn macro_implicit_return() {
assert!(no_allocate_ret());
assert!(no_allocate_implicit_ret());
}
#[allocate_panic]
fn no_allocate_arg(b: bool) -> bool {
b
}
#[test]
@ -73,13 +67,23 @@ fn macro_allocate_arg() {
no_allocate_arg(false);
}
#[allocate_panic]
fn no_allocate_args(_b: bool, _u: usize, i: i64) -> i64 {
i
}
#[test]
fn macro_allocate_args() {
no_allocate_args(true, 0, -1);
no_allocate_args(false, 4, -90);
}
#[allocate_panic]
fn return_result(r: Result<usize, io::Error>) -> Result<Result<usize, io::Error>, ()> {
Ok(r)
}
#[test]
fn macro_return_result() {
return_result(Ok(16)).unwrap().unwrap();
}
}