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106 commits

Author SHA1 Message Date
Sean Cross
cf992e9b09 kernel: hosted: properly shut down process 
This ensures a process with a server can be reused.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-23 17:57:35 +08:00
Sean Cross
0c2eb002ec kernel: hosted: use timeout for tcp reading 
Previously we were blocking, which used way too much processing power.
Instead, use a timeout of ~200 ms.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-23 17:56:39 +08:00
Sean Cross
ca73e8a8dd kernel: test: ensure environment variables are cleared 
These interfere with the test.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-23 17:55:48 +08:00
Sean Cross
8242f1b53f kernel: make server IDs 128 bits 
This makes server IDs a full 128 bits, and changes the argument to
CreateServer from 32-bits to 128-bits.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 17:28:18 +08:00
Sean Cross
68691a757d kernel: fix hanging shutdown thread and warnings 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 16:23:21 +08:00
Sean Cross
4130ce7bd1 kernel: fix threading and multiplexing issues 
Connections weren't getting multiplexed correctly. As a result, they
would respond with the wrong message to a given thread.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 15:51:51 +08:00
Sean Cross
e63e29916a kernel: syscall: move return_memory into its own function 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 10:18:40 +08:00
Sean Cross
d84fd73cfa kernel: rename mod files for IDE support 
If these files are called `mod.rs`, the IDE interface gets really
confusing.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 10:14:43 +08:00
Sean Cross
cf571ad1ee kernel: more renaming context -> thread 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 10:13:24 +08:00
Sean Cross
e1bf9965c3 kernel: more renaming context -> thread 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 10:01:57 +08:00
Sean Cross
16d88d8cb5 kernel: syscall: move receive_message to its own function 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 09:57:06 +08:00
Sean Cross
549866bcd5 kernel: remove printlns, needless context queries 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 09:52:18 +08:00
Sean Cross
1a6b1160a3 syscall: move send_message into its own function 
This breaks up the giant `handle()` function.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-21 09:44:16 +08:00
Sean Cross
42f95e6488 threading: get basic threading tests working 
With this, we can now run two "threads" within one process.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 12:23:09 +08:00
Sean Cross
e2296fceac ThreadID: rename from CtxID 
Contexts are now renamed to Threads, which better reflects what they
actually are.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 11:04:31 +08:00
Sean Cross
11994d325b kernel: test: add test for server_client_same_process 
This is part of `multiple_contexts`, but it's nice to have an explicit
test for this functionality.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 10:22:26 +08:00
Sean Cross
1216963d24 rename contexts -> threads and spawn -> create 
This ensures we're more consistent in naming for these constructs.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 10:17:46 +08:00
Sean Cross
ba7bb29ce2 kernel: don't block on full queue for Scalar/Move msgs 
For Scalar and Move messages, the client does not need to block if the
server does not have any waiting messages. In this case, send an `Ok`
response.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 10:16:42 +08:00
Sean Cross
506d01fe4a kernel: test: use server_address() to create fn as_process() 
This allows us to spawn a new process and set the server address
transparently.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-16 10:04:50 +08:00
Sean Cross
fb32aab691 kernel: testing: move memory profiling into its own test 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-15 21:24:18 +08:00
Sean Cross
bf15ac08f4 kernel: tests: add memory measurement to test suite 
This adds a feature to enable memory measurement, so we can determine if
we're leaking memory anywhere.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-15 17:08:05 +08:00
Sean Cross
e652150c6e kernel: get multiple message passing working 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-15 16:09:42 +08:00
Sean Cross
0ffbaa369a kernel: fix remaining warnings 
This just silences them, which isn't great in the long run.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-14 15:16:51 +08:00
Sean Cross
b93abcc926 kernel: test: implement mutable borrow 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-14 15:10:25 +08:00
Sean Cross
d7006e675e kernel: get send_borrow_message test working 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-14 12:11:57 +08:00
Sean Cross
964b6e0f46 kernel: disable more debug prints 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-14 10:08:49 +08:00
Sean Cross
05d1cf71dc port: use kernel-assigned port number for tests 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 19:57:30 +08:00
Sean Cross
b388d2e1f4 kernel: use SocketAddr instead of &str 
This is easier to copy around and seems to be more informative.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 19:45:29 +08:00
Sean Cross
8f74159674 rename ImmutableBorrow -> Borrow 
THis is more in-line with Rust conventions.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 19:19:25 +08:00
Sean Cross
85c719643a kernel: tests: factor out common connect code 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 19:15:51 +08:00
Sean Cross
05ccba9450 kernel: implement move test 
We can now `Move` memory from one "process" to another.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 18:31:51 +08:00
Sean Cross
40ed6365e2 first memory message works 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-13 17:41:50 +08:00
Sean Cross
acf9b049f7 hosted: start working on memory-based message passing 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-12 11:18:26 +08:00
Sean Cross
e1a92e929c kernel: replace more unimplemented!() with UnhandledSyscall 
This should prevent pacnics when calling unhandled functions.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-07-04 11:58:18 +08:00
Sean Cross
acfe8e5076 kernel: fix pid termination 
Previously, we were recycling PIDs when devices disconnected, however we
weren't cleaning up PIDs within the system-level table.

This now cleans up these entries.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-25 18:15:36 +08:00
Sean Cross
9f1b1e7ec8 kernel: tests: get both tests working 
We now have two tests. These tests may be run either in parallel or in series.

If they are run in parallel, then they will each have their own thread
local storage, and each will initialize things from scratch.

If they are run in series, then the thread local storage will be reused
between the two processes.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-25 17:41:17 +08:00
Sean Cross
54a0db50b3 kernel: start using tls 
This allows us to run multiple kernels in parallel.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-24 17:51:31 +08:00
Sean Cross
abcba48a2a kernel: add tests 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-24 12:29:04 +08:00
Sean Cross
04faa898c7 hosted: cutting down on println messages 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-23 16:40:51 +08:00
Sean Cross
cbd8ec3a30 test: get message passing working 
We are now able to pass messages around as part of a test.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-23 15:47:18 +08:00
Sean Cross
e9469991be test: get initial test passing 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-23 14:42:01 +08:00
Sean Cross
b1a41978ba shutdown: add shutdown syscall 
This will be used during testing to shutdown the kernel once it's
finished.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-23 13:58:15 +08:00
Sean Cross
14bb1ac1e5 kernel: working on getting process termination functioning 
Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-22 17:42:24 +08:00
Sean Cross
9361055aec kernel: work-in-progress for process termination 
Processes can go away. This is initial work to support process
termination.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-18 11:39:46 +08:00
Sean Cross
2786ad697b kernel: get scalar message passing working again 
This gets basic scalar message passing working again. With this, the
following operations may be performed:

    * Starting a server
    * Connecting to a server
    * Sending a scalar message

Care must be taken to not overflow a server's queue, particularly if
writers are faster than readers.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-16 16:34:49 +08:00
Sean Cross
723529ba20 wip: working on getting message passing working 
The goal is to get a basic message passing engine working that will also
function as a device that works on real hardware.

This is still reworking it to function correctly on a desktop system.
Once that is working, it will be reworked to function once again on
hardware.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-15 18:13:10 +08:00
Sean Cross
21c46de60e kernel: move to allow hosted init 
This prepares for new calls to init SystemServices and the MemoryManager
so that they can be initialized with something other than a
KernelArguments struct.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-03 18:28:22 +08:00
Sean Cross
17ae34a1c1 kernel: begin actor refactor 
This refactors the kernel so that it *can* run on baremetal, but it can
also run as part of a full system.

This will aid in developing, and ensure that a minimum amount of unsafe
code is present within the kernel.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-06-03 15:34:55 +08:00
Sean Cross
d4db20e516 kernel: add preemptive multitasking 
This is still a work in progress, but we now can have multiple processes
running at once.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-04-06 15:52:07 +08:00
Sean Cross
a1c88b4ffd kernel: remove old code at top of syscall::handle 
This was pseudocode from back before we had a better idea of how
everything would be laid out.

Signed-off-by: Sean Cross <sean@xobs.io>
 2020-04-06 10:44:41 +08:00