jnr.constants.platform.Errno类的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中jnr.constants.platform.Errno类的一些代码示例，展示了Errno类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Errno类的具体详情如下：
包路径：jnr.constants.platform.Errno
类名称：Errno

Errno介绍

暂无

代码示例

代码示例来源：origin: jenkinsci/jenkins

@Override public void error(Errno error, String methodName, String extraData) {
  throw new PosixException("native error calling " + methodName + ": " + error.description() + " " + extraData, convert(error));
}
private org.jruby.ext.posix.POSIX.ERRORS convert(Errno error) {

代码示例来源：origin: jenkinsci/jenkins

private org.jruby.ext.posix.POSIX.ERRORS convert(Errno error) {
    try {
      return org.jruby.ext.posix.POSIX.ERRORS.valueOf(error.name());
    } catch (IllegalArgumentException x) {
      return org.jruby.ext.posix.POSIX.ERRORS.EIO; // PosixException.message has real error anyway
    }
  }
}, true);

代码示例来源：origin: org.jruby/jruby-core

long procSpawnSh(Ruby runtime, String str, ExecArg eargp) {
    long status;

    String shell = dlnFindExeR(runtime, "sh", eargp.path_env);

//        System.out.println("before: " + shell + ", fa=" + eargp.fileActions + ", a=" + eargp.attributes + ", argv=" + Arrays.asList("sh", "-c", str));
    status = runtime.getPosix().posix_spawnp(
        shell != null ? shell : "/bin/sh",
        eargp.fileActions,
        eargp.attributes,
        Arrays.asList("sh", "-c", str),
        eargp.envp_str == null ? Collections.EMPTY_LIST : Arrays.asList(eargp.envp_str));

    if (status == -1) errno = Errno.valueOf(runtime.getPosix().errno());

    return status;
  }

代码示例来源：origin: org.jruby/jruby-complete

/**
 * Helper for handling common POSIX situations where a negative return value
 * from a function call indicates an error, and errno must be consulted to
 * determine how exactly the function failed.
 * @param runtime Ruby runtime
 * @param result return value of a POSIX call
 */
public static void checkErrno(Ruby runtime, int result) {
  if (result < 0) {
  // FIXME: The error message is a bit off.
  // e.g., No such process - No such process (Errno::ESRCH)
  // Note the repetition of 'No such process'.
    Errno errno = Errno.valueOf(runtime.getPosix().errno());
    String name = errno.name();
    String msg  = errno.toString();
    RubyClass errnoClass = runtime.getErrno().getClass(name);
    if (errnoClass != null) {
      throw RaiseException.from(runtime, errnoClass, msg);
    }
  }
}

代码示例来源：origin: org.jruby/jruby-complete

stat_loc[0] = 0;
int result = runtime.getPosix().waitpid((int)finalPid, stat_loc, 0);
if (result == -1) {
  Errno errno = Errno.valueOf(runtime.getPosix().errno());
  switch (errno) {
    case EINTR:
      runtime.getCurrentContext().pollThreadEvents();
      continue retry;
    case ECHILD:
      return -1;
    default:
      throw new RuntimeException("unexpected waitpid errno: " + Errno.valueOf(runtime.getPosix().errno()));

代码示例来源：origin: org.jruby/jruby-complete

/**
 * Create module Errno's Variables.  We have this method since Errno does not have its
 * own java class.
 */
private void initErrno() {
  if (profile.allowModule("Errno")) {
    errnoModule = defineModule("Errno");
    try {
      // define EAGAIN now, so that future EWOULDBLOCK will alias to it
      // see MRI's error.c and its explicit ordering of Errno definitions.
      createSysErr(Errno.EAGAIN.intValue(), Errno.EAGAIN.name());
      for (Errno e : Errno.values()) {
        Constant c = (Constant) e;
        if (Character.isUpperCase(c.name().charAt(0))) {
          createSysErr(c.intValue(), c.name());
        }
      }
      // map ENOSYS to NotImplementedError
      errnos.put(Errno.ENOSYS.intValue(), notImplementedError);
    } catch (Exception e) {
      // dump the trace and continue
      // this is currently only here for Android, which seems to have
      // bugs in its enumeration logic
      // http://code.google.com/p/android/issues/detail?id=2812
      LOG.error(e);
    }
  }
}

代码示例来源：origin: org.jruby/jruby-complete

private static long transfer(ThreadContext context, ReadableByteChannel from, FileChannel to, long length, long position) throws IOException {
  // handle large files on 32-bit JVMs
  long chunkSize = 128 * 1024 * 1024;
  long transferred = 0;
  long bytes;
  long startPosition = to.position();
  if (position != -1) {
    if (from instanceof NativeSelectableChannel) {
      int ret = context.runtime.getPosix().lseek(((NativeSelectableChannel)from).getFD(), position, PosixShim.SEEK_SET);
      if (ret == -1) {
        throw context.runtime.newErrnoFromErrno(Errno.valueOf(context.runtime.getPosix().errno()), from.toString());
      }
    }
  }
  if (length > 0) {
    while ((bytes = to.transferFrom(from, startPosition+transferred, Math.min(chunkSize, length))) > 0) {
      transferred += bytes;
      length -= bytes;
    }
  } else {
    while ((bytes = to.transferFrom(from, startPosition+transferred, chunkSize)) > 0) {
      transferred += bytes;
    }
  }
  // transforFrom does not change position of target
  to.position(startPosition + transferred);
  return transferred;
}

代码示例来源：origin: org.jruby/jruby-complete

public RaiseException newErrnoFromInt(int errno) {
  Errno errnoObj = Errno.valueOf(errno);
  if (errnoObj == null) {
    return newSystemCallError("Unknown Error (" + errno + ")");
  }
  String message = errnoObj.description();
  return newErrnoFromInt(errno, message);
}

代码示例来源：origin: org.jruby/jruby-complete

POSIX posix = runtime.getPosix();
if (posix.isNative() && !Platform.IS_WINDOWS) {
  IRubyObject oldExc = context.runtime.getGlobalVariables().get("$!"); // Save $!
  try {
    RubyFile.unlink(context, this);
    if (errno != Errno.ENOENT.intValue() && errno != Errno.EACCES.intValue()) {
      throw re;
    context.runtime.getGlobalVariables().set("$!", oldExc); // Restore $!

代码示例来源：origin: org.jruby/jruby-complete

public long size(ChannelFD fd) {
  if (fd.chNative != null) { // native fd, use fstat
    FileStat stat = posix.allocateStat();
    int ret = posix.fstat(fd.chNative.getFD(), stat);
    if (ret == -1) {
      errno = Errno.valueOf(posix.errno());
      return -1;
    }
    return stat.st_size();
  } else if (fd.chSeek != null) { // if it is seekable, get size directly
    try {
      return fd.chSeek.size();
    } catch (IOException ioe) {
      errno = Helpers.errnoFromException(ioe);
      return -1;
    }
  } else {
    // otherwise just return -1 (should be rare, since size is only defined on File
    errno = Errno.EINVAL;
    return -1;
  }
}

代码示例来源：origin: com.github.serceman/jnr-fuse

/**
 * Address family not supported by protocol
 */
public static int EAFNOSUPPORT() {
  return Errno.EAFNOSUPPORT.intValue();
}

代码示例来源：origin: org.jruby/jruby-complete

public int setCloexec(int fd, boolean cloexec) {
  int ret = posix.fcntl(fd, Fcntl.F_GETFD);
  if (ret == -1) {
    errno = Errno.valueOf(posix.errno());
    return -1;
  }
  if (
      (cloexec && (ret & FcntlLibrary.FD_CLOEXEC) == FcntlLibrary.FD_CLOEXEC)
      || (!cloexec && (ret & FcntlLibrary.FD_CLOEXEC) == 0)) {
    return 0;
  }
  ret = cloexec ?
      ret | FcntlLibrary.FD_CLOEXEC :
      ret & ~FcntlLibrary.FD_CLOEXEC;
  ret = posix.fcntlInt(fd, Fcntl.F_SETFD, ret);
  if (ret == -1) errno = Errno.valueOf(posix.errno());
  return ret;
}

代码示例来源：origin: org.jruby/jruby-complete

public void error(Errno error, String extraData) {
  throw runtime.newErrnoFromInt(error.intValue(), extraData);
}

代码示例来源：origin: org.jruby/jruby-complete

public RaiseException newErrnoFromInt(int errno, String methodName, String message) {
  if (Platform.IS_WINDOWS && ("stat".equals(methodName) || "lstat".equals(methodName))) {
    if (errno == 20047) return newErrnoENOENTError(message); // boo:bar UNC stat failure
    if (errno == Errno.ESRCH.intValue()) return newErrnoENOENTError(message); // ESRCH on stating ""
  }
  return newErrnoFromInt(errno, message);
}

代码示例来源：origin: org.jruby/jruby-complete

context.setLastExitStatus(new RubyProcess.RubyStatus(runtime, runtime.getProcStatus(), 0x7f << 8, 0));
if (errno == null || errno == Errno.__UNKNOWN_CONSTANT__) {
  errno = Errno.valueOf(runtime.getPosix().errno());

代码示例来源：origin: org.jruby/jruby-complete

public int ftruncate(ChannelFD fd, long pos) {
  if (fd.chNative != null) {
    int ret = posix.ftruncate(fd.chNative.getFD(), pos);
    if (ret == -1) errno = Errno.valueOf(posix.errno());
    return ret;
  } else if (fd.chFile != null) {
    try {
      fd.chFile.truncate(pos);
    } catch (IOException ioe) {
      errno = Helpers.errnoFromException(ioe);
      return -1;
    }
  } else {
    errno = Errno.EINVAL;
    return -1;
  }
  return 0;
}

代码示例来源：origin: org.jruby/jruby-complete

public int fcntlSetFD(int fd, int flags) {
  int ret = posix.fcntlInt(fd, Fcntl.F_SETFD, flags);
  if (ret == -1) errno = Errno.valueOf(posix.errno());
  return ret;
}

代码示例来源：origin: org.jruby/jruby-complete

static ChannelFD open_func(Ruby runtime, RubyIO.Sysopen data) {
  ChannelFD ret = parentRedirectOpen(runtime, data);
  data.errno = Errno.valueOf(runtime.getPosix().errno());
  return ret;
}

代码示例来源：origin: com.github.jnr/jnr-posix

@Override
public FileStat fstat(int fd) {
  FileStat stat = allocateStat();
  int ret = fstat(fd, stat);
  if (ret < 0) handler.error(Errno.valueOf(errno()), "fstat", Integer.toString(fd));
  return stat;
}

代码示例来源：origin: com.cloudbees.util/jnr-unixsocket-nodep

public long posix_spawnp(String path, Collection<? extends SpawnFileAction> fileActions,
    CharSequence[] argv, CharSequence[] envp) {
  AbstractNumberReference<? extends Number> pid = Library.getRuntime(libc()).findType(TypeAlias.pid_t).size() == 4
      ? new IntByReference(-1) : new LongLongByReference(-1);
  Pointer nativeFileActions = nativeFileActions(fileActions);
  try {
    if (((UnixLibC) libc()).posix_spawnp(pid, path, nativeFileActions, null, argv, envp) < 0) {
      Errno e = Errno.valueOf(errno());
      handler.error(e, "posix_spawnp", e.description());
    }
  } finally {
    ((UnixLibC) libc()).posix_spawn_file_actions_destroy(nativeFileActions);
  }
  return pid.longValue();
}

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