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#include "rust_internal.h"
#include "rust_message.h"
rust_message::
rust_message(memory_region *region, const char* label,
rust_handle<rust_task> *source, rust_handle<rust_task> *target) :
label(label), region(region), _source(source), _target(target) {
}
rust_message::~rust_message() {
// Nop.
}
void rust_message::process() {
// Nop.
}
void rust_message::kernel_process() {
// Nop.
}
notify_message::
notify_message(memory_region *region, notification_type type,
const char* label, rust_handle<rust_task> *source,
rust_handle<rust_task> *target) :
rust_message(region, label, source, target), type(type) {
}
data_message::
data_message(memory_region *region, uint8_t *buffer, size_t buffer_sz,
const char* label, rust_handle<rust_task> *source,
rust_handle<rust_port> *port) :
rust_message(region, label, source, NULL),
_buffer_sz(buffer_sz), _port(port) {
_buffer = (uint8_t *)malloc(buffer_sz);
memcpy(_buffer, buffer, buffer_sz);
}
data_message::~data_message() {
free (_buffer);
}
/**
* Sends a message to the target task via a proxy. The message is allocated
* in the target task domain along with a proxy which points back to the
* source task.
*/
void notify_message::
send(notification_type type, const char* label,
rust_handle<rust_task> *source, rust_handle<rust_task> *target) {
memory_region *region = &target->message_queue->region;
notify_message *message =
new (region) notify_message(region, type, label, source, target);
// target->referent()->log(rust_log::COMM,
// "==> sending \"%s\" " PTR " in queue " PTR,
// label, message, &target->message_queue);
target->message_queue->enqueue(message);
}
void notify_message::process() {
rust_task *task = _target->referent();
switch (type) {
case KILL:
// task->ref_count--;
task->kill();
break;
case JOIN: {
if (task->dead() == false) {
rust_proxy<rust_task> *proxy = new rust_proxy<rust_task>(_source);
task->tasks_waiting_to_join.append(proxy);
} else {
send(WAKEUP, "wakeup", _target, _source);
}
break;
}
case WAKEUP:
task->wakeup(_source);
break;
}
}
void notify_message::kernel_process() {
switch(type) {
case WAKEUP:
case KILL:
// Ignore.
break;
case JOIN:
send(WAKEUP, "wakeup", _target, _source);
break;
}
}
void data_message::
send(uint8_t *buffer, size_t buffer_sz, const char* label,
rust_handle<rust_task> *source, rust_handle<rust_port> *port) {
memory_region *region = &port->message_queue->region;
data_message *message =
new (region) data_message(region, buffer, buffer_sz, label, source,
port);
source->referent()->log(rust_log::COMM,
"==> sending \"%s\"" PTR " in queue " PTR,
label, message, &port->message_queue);
port->message_queue->enqueue(message);
}
void data_message::process() {
_port->referent()->remote_channel->send(_buffer);
// _target->referent()->log(rust_log::COMM,
// "<=== received data via message ===");
}
void data_message::kernel_process() {
}
rust_message_queue::rust_message_queue(rust_srv *srv, rust_kernel *kernel) :
region (srv, true), kernel(kernel),
dom_handle(NULL) {
// Nop.
}
//
// 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:
//
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