Class: CZMQ::FFI::Zframe

Inherits:
Object
  • Object
show all
Defined in:
lib/czmq-ffi-gen/czmq/ffi/zframe.rb

Overview

Note:

This class is 100% generated using zproject.

working with single message frames

Defined Under Namespace

Classes: DestroyedError

Constant Summary collapse

MORE = 
1
REUSE = 
2
DONTWAIT = 
4

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ptr, finalize = true) ⇒ Zframe

Attaches the pointer ptr to this instance and defines a finalizer for it if necessary.

Parameters:

  • ptr (::FFI::Pointer)
  • finalize (Boolean) (defaults to: true) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 33

def initialize(ptr, finalize = true)
  @ptr = ptr
  if @ptr.null?
    @ptr = nil # Remove null pointers so we don't have to test for them.
  elsif finalize
    @finalizer = self.class.create_finalizer_for @ptr
    ObjectSpace.define_finalizer self, @finalizer
  end
end

Class Method Details

.__new ⇒ Object 



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 27

alias :__new :new

.create_finalizer_for(ptr) ⇒ Proc

Parameters:

  • ptr (::FFI::Pointer)

Returns:

  • (Proc) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 44

def self.create_finalizer_for(ptr)
  Proc.new do
    ptr_ptr = ::FFI::MemoryPointer.new :pointer
    ptr_ptr.write_pointer ptr
    ::CZMQ::FFI.zframe_destroy ptr_ptr
  end
end

.destructor_fn ⇒ Object

Note:

WARNING: If your Ruby code doesn’t retain a reference to the FFI::Function object after passing it to a C function call, it may be garbage collected while C still holds the pointer, potentially resulting in a segmentation fault.

Create a new callback of the following type: Destroy an item

typedef void (zframe_destructor_fn) (
    void **hint);



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 94

def self.destructor_fn
  ::FFI::Function.new :void, [:pointer], blocking: true do |hint|
    result = yield hint
    result
  end
end

.from(string) ⇒ CZMQ::Zframe

Create a frame with a specified string content.

Parameters:

  • string (String, #to_s, nil)

Returns:

  • (CZMQ::Zframe) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 123

def self.from(string)
  ptr = ::CZMQ::FFI.zframe_from(string)
  __new ptr
end

.frommem(data, size, destructor, hint) ⇒ CZMQ::Zframe

Create a new frame from memory. Take ownership of the memory and calling the destructor on destroy.

Parameters:

  • data (::FFI::Pointer, #to_ptr)
  • size (Integer, #to_int, #to_i)
  • destructor (::FFI::Pointer, #to_ptr)
  • hint (::FFI::Pointer, #to_ptr)

Returns:

  • (CZMQ::Zframe) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 135

def self.frommem(data, size, destructor, hint)
  size = Integer(size)
  ptr = ::CZMQ::FFI.zframe_frommem(data, size, destructor, hint)
  __new ptr
end

.is(self_) ⇒ Boolean

Probe the supplied object, and report if it looks like a zframe_t.

Parameters:

  • self_ (::FFI::Pointer, #to_ptr)

Returns:

  • (Boolean) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 368

def self.is(self_)
  result = ::CZMQ::FFI.zframe_is(self_)
  result
end

.new(data, size) ⇒ CZMQ::Zframe

Create a new frame. If size is not null, allocates the frame data to the specified size. If additionally, data is not null, copies size octets from the specified data into the frame body.

Parameters:

  • data (::FFI::Pointer, #to_ptr)
  • size (Integer, #to_int, #to_i)

Returns:

  • (CZMQ::Zframe) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 107

def self.new(data, size)
  size = Integer(size)
  ptr = ::CZMQ::FFI.zframe_new(data, size)
  __new ptr
end

.new_empty ⇒ CZMQ::Zframe

Create an empty (zero-sized) frame

Returns:

  • (CZMQ::Zframe) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 115

def self.new_empty()
  ptr = ::CZMQ::FFI.zframe_new_empty()
  __new ptr
end

.recv(source) ⇒ CZMQ::Zframe

Receive frame from socket, returns zframe_t object or NULL if the recv was interrupted. Does a blocking recv, if you want to not block then use zpoller or zloop.

Parameters:

  • source (::FFI::Pointer, #to_ptr)

Returns:

  • (CZMQ::Zframe) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 146

def self.recv(source)
  ptr = ::CZMQ::FFI.zframe_recv(source)
  __new ptr
end

.send(self_p, dest, flags) ⇒ Integer

Send a frame to a socket, destroy frame after sending. Return -1 on error, 0 on success.

Parameters:

Returns:

  • (Integer) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 168

def self.send(self_p, dest, flags)
  self_p = self_p.__ptr_give_ref
  flags = Integer(flags)
  result = ::CZMQ::FFI.zframe_send(self_p, dest, flags)
  result
end

.test(verbose) ⇒ void

This method returns an undefined value.

Self test of this class.

Parameters:

  • verbose (Boolean) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 377

def self.test(verbose)
  verbose = !(0==verbose||!verbose) # boolean
  result = ::CZMQ::FFI.zframe_test(verbose)
  result
end

Instance Method Details

#__ptr ⇒ ::FFI::Pointer Also known as: to_ptr

Return internal pointer

Returns:

  • (::FFI::Pointer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 57

def __ptr
  raise DestroyedError unless @ptr
  @ptr
end

#__ptr_give_ref ⇒ ::FFI::MemoryPointer

Note:

This detaches the current instance from the native object and thus makes it unusable.

Nullify internal pointer and return pointer pointer.

Returns:

  • (::FFI::MemoryPointer) —

    the pointer pointing to a pointer pointing to the native object

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 68

def __ptr_give_ref
  raise DestroyedError unless @ptr
  ptr_ptr = ::FFI::MemoryPointer.new :pointer
  ptr_ptr.write_pointer @ptr
  __undef_finalizer if @finalizer
  @ptr = nil
  ptr_ptr
end

#__undef_finalizer ⇒ void

Note:

Only use this if you need to and can guarantee that the native object will be freed by other means.

This method returns an undefined value.

Undefines the finalizer for this object.



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 80

def __undef_finalizer
  ObjectSpace.undefine_finalizer self
  @finalizer = nil
end

#data ⇒ ::FFI::Pointer

Return address of frame data

Returns:

  • (::FFI::Pointer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 188

def data()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_data(self_p)
  result
end

#destroy ⇒ void

This method returns an undefined value.

Destroy a frame



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 154

def destroy()
  return unless @ptr
  self_p = __ptr_give_ref
  result = ::CZMQ::FFI.zframe_destroy(self_p)
  result
end

#dup ⇒ Zframe

Create a new frame that duplicates an existing frame. If frame is null, or memory was exhausted, returns null.

Returns:

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 212

def dup()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_dup(self_p)
  result = Zframe.__new result, true
  result
end

#eq(other) ⇒ Boolean

Return TRUE if two frames have identical size and data If either frame is NULL, equality is always false.

Parameters:

Returns:

  • (Boolean)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 331

def eq(other)
  raise DestroyedError unless @ptr
  self_p = @ptr
  other = other.__ptr if other
  result = ::CZMQ::FFI.zframe_eq(self_p, other)
  result
end

#group ⇒ String

Return frame group of radio-dish pattern.

Returns:

  • (String)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 306

def group()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_group(self_p)
  result
end

#meta(property) ⇒ String

Return meta data property for frame The caller shall not modify or free the returned value, which shall be owned by the message.

Parameters:

  • property (String, #to_s, nil)

Returns:

  • (String)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 201

def meta(property)
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_meta(self_p, property)
  result
end

#more ⇒ Integer

Return frame MORE indicator (1 or 0), set when reading frame from socket or by the zframe_set_more() method

Returns:

  • (Integer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 259

def more()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_more(self_p)
  result
end

#null? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 52

def null?
  !@ptr or @ptr.null?
end

#print(prefix) ⇒ void

This method returns an undefined value.

Send message to zsys log sink (may be stdout, or system facility as configured by zsys_set_logstream). Prefix shows before frame, if not null.

Parameters:

  • prefix (String, #to_s, nil)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 357

def print(prefix)
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_print(self_p, prefix)
  result
end

#reset(data, size) ⇒ void

This method returns an undefined value.

Set new contents for frame

Parameters:

  • data (::FFI::Pointer, #to_ptr)
  • size (Integer, #to_int, #to_i)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 344

def reset(data, size)
  raise DestroyedError unless @ptr
  self_p = @ptr
  size = Integer(size)
  result = ::CZMQ::FFI.zframe_reset(self_p, data, size)
  result
end

#routing_id ⇒ Integer

Return frame routing ID, if the frame came from a ZMQ_SERVER socket. Else returns zero.

Returns:

  • (Integer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 283

def routing_id()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_routing_id(self_p)
  result
end

#set_group(group) ⇒ Integer

Set group on frame. This is used if/when the frame is sent to a ZMQ_RADIO socket. Return -1 on error, 0 on success.

Parameters:

  • group (String, #to_s, nil)

Returns:

  • (Integer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 319

def set_group(group)
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_set_group(self_p, group)
  result
end

#set_more(more) ⇒ void

This method returns an undefined value.

Set frame MORE indicator (1 or 0). Note this is NOT used when sending frame to socket, you have to specify flag explicitly.

Parameters:

  • more (Integer, #to_int, #to_i)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 271

def set_more(more)
  raise DestroyedError unless @ptr
  self_p = @ptr
  more = Integer(more)
  result = ::CZMQ::FFI.zframe_set_more(self_p, more)
  result
end

#set_routing_id(routing_id) ⇒ void

This method returns an undefined value.

Set routing ID on frame. This is used if/when the frame is sent to a ZMQ_SERVER socket.

Parameters:

  • routing_id (Integer, #to_int, #to_i)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 295

def set_routing_id(routing_id)
  raise DestroyedError unless @ptr
  self_p = @ptr
  routing_id = Integer(routing_id)
  result = ::CZMQ::FFI.zframe_set_routing_id(self_p, routing_id)
  result
end

#size ⇒ Integer

Return number of bytes in frame data

Returns:

  • (Integer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 178

def size()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_size(self_p)
  result
end

#strdup ⇒ ::FFI::AutoPointer

Return frame data copied into freshly allocated string Caller must free string when finished with it.

Returns:

  • (::FFI::AutoPointer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 236

def strdup()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_strdup(self_p)
  result = ::FFI::AutoPointer.new(result, LibC.method(:free))
  result
end

#streq(string) ⇒ Boolean

Return TRUE if frame body is equal to string, excluding terminator

Parameters:

  • string (String, #to_s, nil)

Returns:

  • (Boolean)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 248

def streq(string)
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_streq(self_p, string)
  result
end

#strhex ⇒ ::FFI::AutoPointer

Return frame data encoded as printable hex string, useful for 0MQ UUIDs. Caller must free string when finished with it.

Returns:

  • (::FFI::AutoPointer)

Raises:



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# File 'lib/czmq-ffi-gen/czmq/ffi/zframe.rb', line 224

def strhex()
  raise DestroyedError unless @ptr
  self_p = @ptr
  result = ::CZMQ::FFI.zframe_strhex(self_p)
  result = ::FFI::AutoPointer.new(result, LibC.method(:free))
  result
end