31 lines
702 B
C++
31 lines
702 B
C++
#ifndef UTIL_USAGE_H
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#define UTIL_USAGE_H
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#include <cstddef>
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#include <iosfwd>
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#include <string>
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#include <stdint.h>
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namespace util {
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// Time in seconds since process started. Zero on unsupported platforms.
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double WallTime();
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// User + system time, process-wide.
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double CPUTime();
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// User + system time, thread-specific.
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double ThreadTime();
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// Resident usage in bytes.
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uint64_t RSSMax();
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void PrintUsage(std::ostream &to);
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// Determine how much physical memory there is. Return 0 on failure.
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uint64_t GuessPhysicalMemory();
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// Parse a size like unix sort. Sadly, this means the default multiplier is K.
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uint64_t ParseSize(const std::string &arg);
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} // namespace util
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#endif // UTIL_USAGE_H
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