| #ifndef UTIL_USAGE_H |
| #define UTIL_USAGE_H |
| #include <cstddef> |
| #include <iosfwd> |
| #include <string> |
| |
| #include <stdint.h> |
| |
| namespace util { |
| // Time in seconds since process started. Zero on unsupported platforms. |
| double WallTime(); |
| |
| void PrintUsage(std::ostream &to); |
| |
| // Determine how much physical memory there is. Return 0 on failure. |
| uint64_t GuessPhysicalMemory(); |
| |
| // Parse a size like unix sort. Sadly, this means the default multiplier is K. |
| uint64_t ParseSize(const std::string &arg); |
| } // namespace util |
| #endif // UTIL_USAGE_H |
