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#ifndef RUST_MESSAGE_H
#define RUST_MESSAGE_H
/**
* Rust messages are used for inter-thread communication. They are enqueued
* and allocated in the target domain.
*/
/**
* Abstract base class for all message types.
*/
class rust_message : public lock_free_queue_node {
public:
const char* label;
private:
rust_dom *_dom;
rust_task *_source;
protected:
rust_task *_target;
public:
rust_message(const char* label, rust_task *source, rust_task *target);
virtual ~rust_message();
/**
* We can only access the source task through a proxy, so create one
* on demand if we need it.
*/
rust_proxy<rust_task> *get_source_proxy();
/**
* Processes the message in the target domain thread.
*/
virtual void process();
};
/**
* Notify messages are simple argument-less messages.
*/
class notify_message : public rust_message {
public:
enum notification_type {
KILL, JOIN, WAKEUP
};
const notification_type type;
notify_message(notification_type type, const char* label,
rust_task *source, rust_task *target);
void process();
/**
* This code executes in the sending domain's thread.
*/
static void
send(notification_type type, const char* label, rust_task *source,
rust_proxy<rust_task> *target);
};
/**
* Data messages carry a buffer.
*/
class data_message : public rust_message {
private:
uint8_t *_buffer;
size_t _buffer_sz;
rust_port *_port;
public:
data_message(uint8_t *buffer, size_t buffer_sz, const char* label,
rust_task *source, rust_task *target, rust_port *port);
virtual ~data_message();
void process();
/**
* This code executes in the sending domain's thread.
*/
static void
send(uint8_t *buffer, size_t buffer_sz, const char* label,
rust_task *source, rust_proxy<rust_task> *target,
rust_proxy<rust_port> *port);
};
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C .. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
#endif /* RUST_MESSAGE_H */
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