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/** |
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* This file is part of the CernVM File System. |
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* |
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* Some common functions. |
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*/ |
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#ifndef __STDC_FORMAT_MACROS |
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#define __STDC_FORMAT_MACROS |
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#endif |
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#include "cvmfs_config.h" |
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#include "util/algorithm.h" |
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using namespace std; // NOLINT |
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#ifdef CVMFS_NAMESPACE_GUARD |
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namespace CVMFS_NAMESPACE_GUARD { |
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#endif |
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double DiffTimeSeconds(struct timeval start, struct timeval end) { |
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// Time substraction, from GCC documentation |
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✓✓ |
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if (end.tv_usec < start.tv_usec) { |
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int nsec = (end.tv_usec - start.tv_usec) / 1000000 + 1; |
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start.tv_usec -= 1000000 * nsec; |
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start.tv_sec += nsec; |
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} |
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✗✓ |
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if (end.tv_usec - start.tv_usec > 1000000) { |
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int nsec = (end.tv_usec - start.tv_usec) / 1000000; |
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start.tv_usec += 1000000 * nsec; |
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start.tv_sec -= nsec; |
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} |
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// Compute the time remaining to wait in microseconds. |
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// tv_usec is certainly positive. |
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uint64_t elapsed_usec = ((end.tv_sec - start.tv_sec)*1000000) + |
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(end.tv_usec - start.tv_usec); |
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return static_cast<double>(elapsed_usec)/1000000.0; |
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} |
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void StopWatch::Start() { |
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✗✓ |
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assert(!running_); |
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gettimeofday(&start_, NULL); |
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running_ = true; |
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} |
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void StopWatch::Stop() { |
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✗✓ |
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assert(running_); |
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gettimeofday(&end_, NULL); |
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running_ = false; |
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} |
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void StopWatch::Reset() { |
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start_ = timeval(); |
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end_ = timeval(); |
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running_ = false; |
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} |
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double StopWatch::GetTime() const { |
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✗✓ |
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assert(!running_); |
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return DiffTimeSeconds(start_, end_); |
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} |
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#ifdef CVMFS_NAMESPACE_GUARD |
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} // namespace CVMFS_NAMESPACE_GUARD |
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#endif |