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[kernel] Add endpoint object and related syscalls

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The endpoint object adds synchronous IPC. Also added the wait-type of
'object' to threads.
This commit is contained in:
Justin C. Miller
2020-09-07 01:09:56 -07:00
parent 53d260cc6e
commit 8534d8d3c5
13 changed files with 368 additions and 49 deletions
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57
src/drivers/nulldrv/main.cpp
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@@ -7,9 +7,8 @@
#include <j6libc/syscalls.h>
const char message[] = "Hello! This is a message being sent over a channel!\n";
char inbuf[1024];
j6_handle_t chan = j6_handle_invalid;
j6_handle_t endp = j6_handle_invalid;
j6_process_init *init = nullptr;
@@ -23,18 +22,23 @@ thread_proc()
{
_syscall_system_log("sub thread starting");
j6_status_t result = _syscall_object_signal(chan, j6_signal_user0);
char buffer[512];
size_t len = sizeof(buffer);
j6_status_t result = _syscall_endpoint_receive(endp, &len, (void*)buffer);
if (result != j6_status_ok)
_syscall_thread_exit(result);
_syscall_system_log("sub thread signaled user0");
_syscall_system_log("sub thread received message");
size_t size = sizeof(message);
result = _syscall_channel_send(chan, &size, (void*)message);
for (int i = 0; i < len; ++i)
if (buffer[i] >= 'A' && buffer[i] <= 'Z')
buffer[i] += 0x20;
result = _syscall_endpoint_send(endp, len, (void*)buffer);
if (result != j6_status_ok)
_syscall_thread_exit(result);
_syscall_system_log("sub thread sent on channel");
_syscall_system_log("sub thread sent message");
for (int i = 1; i < 5; ++i)
_syscall_thread_sleep(i*10);
@@ -57,44 +61,25 @@ main(int argc, const char **argv)
_syscall_system_log("main thread starting");
j6_status_t result = _syscall_channel_create(&chan);
j6_status_t result = _syscall_endpoint_create(&endp);
if (result != j6_status_ok)
return result;
size_t size = sizeof(message);
result = _syscall_channel_send(init->output, &size, (void*)message);
if (result != j6_status_ok)
return result;
_syscall_system_log("main thread created channel");
_syscall_system_log("main thread created endpoint");
result = _syscall_thread_create(reinterpret_cast<void*>(&thread_proc), &child);
if (result != j6_status_ok)
return result;
_syscall_system_log("main thread waiting on user0");
_syscall_system_log("main thread created sub thread");
result = _syscall_object_wait(chan, j6_signal_user0, &out);
char message[] = "MAIN THREAD SUCCESSFULLY CALLED SENDRECV IF THIS IS LOWERCASE";
size_t size = sizeof(message);
result = _syscall_endpoint_sendrecv(endp, &size, (void*)message);
if (result != j6_status_ok)
return result;
_syscall_system_log("main thread waiting on can_recv");
result = _syscall_object_wait(chan, j6_signal_channel_can_recv, &out);
if (result != j6_status_ok)
return result;
size_t len = sizeof(inbuf);
result = _syscall_channel_receive(chan, &len, (void*)inbuf);
if (result != j6_status_ok)
return result;
for (int i = 0; i < sizeof(message); ++i) {
if (inbuf[i] != message[i])
return 127;
}
_syscall_system_log("main thread received on channel");
_syscall_system_log(message);
_syscall_system_log("main thread waiting on child");
@@ -102,12 +87,12 @@ main(int argc, const char **argv)
if (result != j6_status_ok)
return result;
result = _syscall_channel_close(chan);
_syscall_system_log("main thread closing endpoint");
result = _syscall_endpoint_close(endp);
if (result != j6_status_ok)
return result;
_syscall_system_log("main thread closed channel");
_syscall_system_log("main thread done, exiting");
return 0;
}