gistfile1.c

/* uv_spawn() options */
typedef enum {
  UV_IGNORE             = 0x00,
  UV_CREATE_PIPE        = 0x01,
  UV_INHERIT_FD         = 0x02,
  UV_INHERIT_STREAM     = 0x04,
  UV_DUAL_PIPE          = 0x08,

  /* When UV_CREATE_PIPE is specified, UV_READABLE_PIPE and UV_WRITABLE_PIPE
   * determine the direction of flow, from the child process' perspective. Both
   * flags may be specified to create a duplex data stream.
   */
  UV_READABLE_PIPE      = 0x10,
  UV_WRITABLE_PIPE      = 0x20
} uv_stdio_flags;

typedef enum {
    UV_ALLOCATED            = 0x00,
    UV_INITIALIZED          = 0x01,
    UV_STREAM_READ_PIPE     = 0x02,
    UV_STREAM_WRITE_PIPE    = 0x04
} uv_dual_pipe_flags;

typedef struct uv_dual_pipe_s {
    uv_dual_pipe_flags flags;
    union {
        uv_os_fd_t fd;
        uv_stream_t *pipe;
    } read;
    union {
        uv_os_fd_t fd;
        uv_stream_t *pipe;
    } write;
} uv_dual_pipe_t;

typedef union {
  uv_stream_t* stream;
  uv_dual_pipe_t* pipe;
  int fd;
} uv_stdio_data;

typedef struct uv_stdio_container_s {
  uv_stdio_flags flags;
  uv_stdio_data data;
} uv_stdio_container_t;