fix: panic when perf counter could not be initialized #16
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As reported in iopsystems#14, the CPU CPI sampler will panic if the cycles or instructions perf counters cannot be initialized. This PR fixes the bug by returning a Nop sampler if there are exceptions during initialization.
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As reported in #14, the CPU CPI sampler will panic if the cycles or instructions perf counters cannot be initialized.
This PR fixes the bug by returning a Nop sampler if there are exceptions during initialization.