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First iteration of denali server

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This commit is contained in:
Drew Galbraith 2023-06-15 16:20:29 -07:00
parent 82b1a5c4db
commit ffa2d97a64
18 changed files with 273 additions and 39 deletions
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67
zion/object/channel.cpp
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@ -1,6 +1,7 @@
#include "object/channel.h"
#include "include/zerrors.h"
#include "scheduler/scheduler.h"
Pair<RefPtr<Channel>, RefPtr<Channel>> Channel::CreateChannelPair() {
auto c1 = MakeRefCounted<Channel>();
@ -15,21 +16,35 @@ z_err_t Channel::Write(const ZMessage& msg) {
}
z_err_t Channel::Read(ZMessage& msg) {
if (pending_messages_.size() == 0) {
dbgln("Unimplemented add blocking.");
return Z_ERR_UNIMPLEMENTED;
mutex_.Lock();
while (pending_messages_.size() == 0) {
blocked_threads_.PushBack(gScheduler->CurrentThread());
mutex_.Unlock();
gScheduler->Yield();
mutex_.Lock();
}
Message next_msg = pending_messages_.PeekFront();
if (next_msg.num_bytes > msg.num_bytes) {
mutex_.Unlock();
MutexHolder lock(mutex_);
auto next_msg = pending_messages_.PeekFront();
if (next_msg->num_bytes > msg.num_bytes) {
return Z_ERR_BUFF_SIZE;
}
if (next_msg->caps.size() > msg.num_caps) {
return Z_ERR_BUFF_SIZE;
}
msg.type = next_msg.type;
msg.num_bytes = next_msg.num_bytes;
msg.num_caps = 0;
msg.type = next_msg->type;
msg.num_bytes = next_msg->num_bytes;
for (uint64_t i = 0; i < msg.num_bytes; i++) {
msg.bytes[i] = next_msg.bytes[i];
msg.bytes[i] = next_msg->bytes[i];
}
msg.num_caps = next_msg->caps.size();
auto& proc = gScheduler->CurrentProcess();
for (uint64_t i = 0; i < msg.num_caps; i++) {
msg.caps[i] = proc.AddCapability(next_msg->caps.PopFront());
}
pending_messages_.PopFront();
@ -38,24 +53,36 @@ z_err_t Channel::Read(ZMessage& msg) {
}
z_err_t Channel::EnqueueMessage(const ZMessage& msg) {
if (msg.num_caps > 0) {
dbgln("Unimplemented passing caps on channel");
return Z_ERR_UNIMPLEMENTED;
}
if (msg.num_bytes > 0x1000) {
dbgln("Large message size unimplemented: %x", msg.num_bytes);
return Z_ERR_INVALID;
}
Message message{
.type = msg.type,
.num_bytes = msg.num_bytes,
.bytes = new uint8_t[msg.num_bytes],
};
auto message = MakeShared<Message>();
message->type = msg.type;
// Copy Message body.
message->num_bytes = msg.num_bytes;
message->bytes = new uint8_t[msg.num_bytes];
for (uint64_t i = 0; i < msg.num_bytes; i++) {
message.bytes[i] = msg.bytes[i];
message->bytes[i] = msg.bytes[i];
}
// Release and store capabilities.
for (uint64_t i = 0; i < msg.num_caps; i++) {
auto cap = gScheduler->CurrentProcess().ReleaseCapability(msg.caps[i]);
if (!cap) {
return Z_ERR_CAP_NOT_FOUND;
}
message->caps.PushBack(cap);
}
// Enqueue.
MutexHolder lock(mutex_);
pending_messages_.PushBack(message);
if (blocked_threads_.size() > 0) {
gScheduler->Enqueue(blocked_threads_.PopFront());
}
return Z_OK;
}