Function Calls

The following are the calls related to signals and messages.

Allocating Signals

The following calls work with signal bits.

AllocSignal() Allocates one or more signals for intertask communication.
ClearCurrentSignals() Clears specified signals bits of the current task.
FreeSignal() Frees signal bits.
GetCurrentSignals() Returns the state of the current task's signal bits.
SendSignal() Sends one or more signals to another task or thread.
WaitSignal() Waits for one or more signals to arrive.

Creating Messages and Message Ports

The following calls create messages and ports.

CreateBufferedMsg() Creates a buffered message.
CreateMsg() Creates a standard message.
CreateMsgPort()Creates a message port.
CreateSmallMsg()Creates a small message.
CreateUniqueMsgPort()Creates a message port with a guaranteed unique name.

Deleting Messages and Message Ports

The following calls delete messages and ports.

DeleteMsg() Deletes a message of any type.
DeleteMsgPort()Deletes a message port.

Finding a Message Port

The following call finds a message port by name.

FindMsgPort() Returns the item number of the message port having the specified name.

Sending Messages

The following calls send different types of messages:

SendMsg() Sends a message.
SendSmallMsg()Sends a small message.

Receiving Messages

The following calls retrieve messages:

GetMsg() Gets a message from a message port.
GetThisMsg() Gets a specific message.
WaitPort()Waits for a message to arrive.

Replying to Messages

The following calls reply to messages:

ReplyMsg() Sends a reply to a message.
ReplySmallMsg() Sends a reply to a small message.