82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
#include "rust_internal.h"
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#include "rust_port.h"
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#include "rust_chan.h"
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rust_port::rust_port(rust_task *task, size_t unit_sz)
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: ref_count(1), kernel(task->kernel), task(task),
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unit_sz(unit_sz) {
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LOG(task, comm,
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"new rust_port(task=0x%" PRIxPTR ", unit_sz=%d) -> port=0x%"
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PRIxPTR, (uintptr_t)task, unit_sz, (uintptr_t)this);
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id = task->register_port(this);
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remote_chan = new (task->kernel, "rust_chan")
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rust_chan(task->kernel, this, unit_sz);
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remote_chan->ref();
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remote_chan->port = this;
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}
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rust_port::~rust_port() {
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LOG(task, comm, "~rust_port 0x%" PRIxPTR, (uintptr_t) this);
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{
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scoped_lock with(lock);
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remote_chan->port = NULL;
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remote_chan->deref();
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remote_chan = NULL;
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}
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task->release_port(id);
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}
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void rust_port::send(void *sptr) {
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if (!remote_chan->is_associated()) {
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W(kernel, remote_chan->is_associated(),
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"rust_chan::transmit with no associated port.");
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return;
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}
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scoped_lock with(lock);
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remote_chan->buffer.enqueue(sptr);
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A(kernel, !remote_chan->buffer.is_empty(),
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"rust_chan::transmit with nothing to send.");
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if (task->blocked_on(this)) {
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KLOG(kernel, comm, "dequeued in rendezvous_ptr");
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remote_chan->buffer.dequeue(task->rendezvous_ptr);
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task->rendezvous_ptr = 0;
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task->wakeup(this);
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}
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}
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bool rust_port::receive(void *dptr) {
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if (remote_chan->buffer.is_empty() == false) {
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remote_chan->buffer.dequeue(dptr);
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LOG(task, comm, "<=== read data ===");
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return true;
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}
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return false;
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}
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void rust_port::log_state() {
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LOG(task, comm,
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"\tchan: 0x%" PRIxPTR ", size: %d",
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remote_chan,
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remote_chan->buffer.size());
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}
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//
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// Local Variables:
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// mode: C++
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
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// End:
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//
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