Examples with SignedWord org.graalvm.word.SignedWord used on opensource projects

Example 16 with SignedWord

use of org.graalvm.word.SignedWord in project graal by oracle.

the class PosixJavaLangSubstitutions method readEntirely.

static SignedWord readEntirely(int fd, PointerBase buf, UnsignedWord count) {
    Pointer ptr = WordFactory.pointer(buf.rawValue());
    final Pointer end = ptr.add(count);
    SignedWord read;
    do {
        Errno.set_errno(0);
        read = Unistd.read(fd, ptr, end.subtract(ptr));
        if (read.equal(0)) {
            // EOF
            break;
        } else if (read.greaterThan(0)) {
            ptr = ptr.add((int) read.rawValue());
        }
    } while (ptr.notEqual(end) && (read.notEqual(-1) || Errno.errno() == Errno.EINTR()));
    if (ptr.notEqual(buf)) {
        return WordFactory.signed(ptr.rawValue() - buf.rawValue());
    }
    return read;
}