* component must escape all of its `?` characters, otherwise it could be interpreted as the
 * start of the URL's query. But within the query and fragment components, the `?` character
 * doesn't delimit anything and doesn't need to be escaped.
 *
 * ```java
 * HttpUrl url = HttpUrl.parse("http://who-let-the-dogs.out").newBuilder()
 *     .addPathSegment("_Who?_")
 *     .query("_Who?_")
 *     .fragment("_Who?_")

	// No sweep on the first cycle.
	sweep.active.state.Store(sweepDrainedMask)

	// Initialize GC pacer state.
	// Use the environment variable GOGC for the initial gcPercent value.
	// Use the environment variable GOMEMLIMIT for the initial memoryLimit value.
	gcController.init(readGOGC(), readGOMEMLIMIT())

	work.startSema = 1
	work.markDoneSema = 1
	lockInit(&work.sweepWaiters.lock, lockRankSweepWaiters)

 * be URL encoded if it contains reserved characters. According to RFC 2396
 * these characters are non US-ASCII characters and most meta characters
 * however jCIFS will work correctly with anything but '@' which is used
 * to delimit the userinfo component from the server and '%' which is the
 * URL escape character itself.
 * <p>
 * The server
 * component may a traditional NetBIOS name, a DNS name, or IP

//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys	Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) = SYS___PRCTL_A
//sysnb	Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT
//sys	Rename(from string, to string) (err error) = SYS___RENAME_A
//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS___RENAMEAT_A