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Bug 1198582 - Buffer percentage should never be a negative value. r=vp

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This commit is contained in:
Jordan Santell 2015-08-26 10:43:49 -07:00
parent 2c501dbad6
commit de8a3ace2a
1 changed files with 6 additions and 1 deletions
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7
toolkit/devtools/server/actors/performance.js
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@ -211,7 +211,12 @@ const PerformanceFront = exports.PerformanceFront = protocol.FrontClass(Performa
let normalizedCurrent = (totalSize * (currentGeneration - origGeneration)) + currentPosition;
let percent = (normalizedCurrent - origPosition) / totalSize;
return percent > 1 ? 1 : percent;
// Clamp between 0 and 1; can get negative percentage values when a new
// recording starts and the currentBufferStatus has not yet been updated. Rather
// than fetching another status update, just clamp to 0, and this will be updated
// on the next profiler-status event.
return percent > 1 ? 1 : percent < 0 ? 0 : percent;
},
/**