fail: check condition only when its failpoint is open #48
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Signed-off-by: Liqi Geng <gengliqiii@gmail.com>
BusyJay
reviewed
Feb 5, 2020
BusyJay
reviewed
Feb 5, 2020
| pub fn eval<R, F: FnOnce(Option<String>) -> R>(name: &str, f: F) -> Option<R> { | ||
| pub fn eval<R, F: FnOnce(Option<String>) -> R>( | ||
| name: &str, | ||
| f: F, |
BusyJay
reviewed
Feb 5, 2020
| return res; | ||
| } | ||
| }}; | ||
| ($name:expr, $cond:expr, $e:expr) => {{ | ||
| if $cond { | ||
| fail_point!($name, $e); | ||
| if let Some(res) = $crate::eval($name, $e, || $cond) { |
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This makes it hard to share mutable states between $cond and $e.
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If true then we better add a test case that captures the expected behavior.
@gengliqi can you try adding a test case that shares mutable references between the two expressions and seeing if they worked previously but don't work after this patch?
|
Here's a patch to fix CI: #49 |
brson
requested changes
Feb 16, 2020
| return res; | ||
| } | ||
| }}; | ||
| ($name:expr, $cond:expr, $e:expr) => {{ | ||
| if $cond { | ||
| fail_point!($name, $e); | ||
| if let Some(res) = $crate::eval($name, $e, || $cond) { |
There was a problem hiding this comment.
If true then we better add a test case that captures the expected behavior.
@gengliqi can you try adding a test case that shares mutable references between the two expressions and seeing if they worked previously but don't work after this patch?
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Signed-off-by: Liqi Geng gengliqiii@gmail.com
The check-condition code in failpoint runs all the time even it is not open.
It may lead to bad performance if checking the condition is very expensive
or misuse if someone modifies some variables in check-condition code and it's valid only when its failpoint is open. (my guess scenario)