Edgar_Huang

``` cpp class WaitableMutex : public std::mutex { using Lot = ParkingLot; static Lot lot; public: void unlock() { bool unparked = false; lot.unpark(uint64_t(this), [&](std::function wfunc) { if (wfunc()) {...

mmap set offset = 4096 will fail

2

std::string fileData; size_t fileSize = sysconf(_SC_PAGESIZE) * 100 + 10; fileData.reserve(fileSize); for (size_t i = 0; i < fileSize; i++) { fileData.push_back(0xff & Random::rand32()); } File f = File::temporary(); writeStringToFileOrDie(fileData,...