Avoid instrumenting c++ allocators when they call malloc internally#458
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Benchmark results for collatzParameters
SummaryFound 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics. See unchanged results
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Benchmark results for BadBoggleSolver_runParameters
SummaryFound 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics. See unchanged results
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What does this PR do?
When malloc and new are defined in 2 different libraries then new most likely calls malloc, and therefore c++ allocators do not need to be instrumented.
This improves performance by avoiding unnecessary allocation calls interception:
eg. libstdc++
operator new[](unsigned long)callsoperator new(unsigned long), which callsmallochence without this change we would intercept this allocation at 3 different points.