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This commit is contained in:
Bradlee Speice 2019-01-20 15:18:41 -05:00
parent 08dac29b82
commit 640269ff10
1 changed files with 8 additions and 4 deletions
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12
src/lib.rs
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@ -105,7 +105,6 @@ thread_local! {
static IS_ACTIVE: RwLock<bool> = RwLock::new(false); static IS_ACTIVE: RwLock<bool> = RwLock::new(false);
static INTERNAL_ALLOCATION: RwLock<usize> = RwLock::new(usize::max_value()); static INTERNAL_ALLOCATION: RwLock<usize> = RwLock::new(usize::max_value());
/// The QADAPT allocator itself /// The QADAPT allocator itself
/// ///
/// To make use of the allocator, include this code block in your program /// To make use of the allocator, include this code block in your program
@ -307,10 +306,12 @@ pub fn protection_level() -> usize {
PROTECTION_LEVEL.try_with(|v| *v.read()).unwrap_or(0) PROTECTION_LEVEL.try_with(|v| *v.read()).unwrap_or(0)
} }
/// Determine whether qadapt is running as the current global allocator. Useful for /// Determine whether QADAPT will trigger thread panics if an allocation happens
/// double-checking that you will in fact panic if allocations happen in guarded code. /// during protected code. This should be used for making sure that QADAPT is
/// properly set up and initialized.
/// ///
/// **Note**: when running in `release` profile, `is_active()` will always return false. /// Note that this will return `false` in release builds even if QADAPT is set
/// as the `#[global_allocator]`.
/// ///
/// **Example**: /// **Example**:
/// ///
@ -331,6 +332,9 @@ pub fn protection_level() -> usize {
/// ``` /// ```
pub fn is_active() -> bool { pub fn is_active() -> bool {
if cfg!(debug_assertions) { if cfg!(debug_assertions) {
// Because there are heap allocations that happen before `fn main()`,
// we don't need to force an extra allocation here to guarantee that
// IS_ACTIVE is set
*IS_ACTIVE.read() *IS_ACTIVE.read()
} else { } else {
false false