| 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 | |