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[kernel] Add syscall helpers

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Added the syscalls/helpers.h file to templatize common kobject syscall
operations. Also moved most syscall implementations to using
process::current() and thread::current() instead of asking the
scheduler.
This commit is contained in:
Justin C. Miller
2020-09-23 00:22:15 -07:00
parent 6780ab1b67
commit d4283731e4
12 changed files with 96 additions and 126 deletions
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37
src/kernel/syscalls/channel.cpp
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@@ -2,60 +2,39 @@
#include "j6/types.h"
#include "objects/channel.h"
#include "objects/process.h"
#include "syscalls/helpers.h"
namespace syscalls {
j6_status_t
channel_create(j6_handle_t *handle)
{
process &p = process::current();
channel *c = new channel;
*handle = p.add_handle(c);
construct_handle<channel>(handle);
return j6_status_ok;
}
j6_status_t
channel_close(j6_handle_t handle)
{
process &p = process::current();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::channel)
return j6_err_invalid_arg;
p.remove_handle(handle);
channel *c = static_cast<channel*>(o);
channel *c = remove_handle<channel>(handle);
if (!c) return j6_err_invalid_arg;
c->close();
return j6_status_ok;
}
j6_status_t
channel_send(j6_handle_t handle, size_t *len, void *data)
{
process &p = process::current();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::channel)
return j6_err_invalid_arg;
channel *c = static_cast<channel*>(o);
channel *c = get_handle<channel>(handle);
if (!c) return j6_err_invalid_arg;
return c->enqueue(len, data);
}
j6_status_t
channel_receive(j6_handle_t handle, size_t *len, void *data)
{
process &p = process::current();
kobject *o = p.lookup_handle(handle);
if (!o || o->get_type() != kobject::type::channel)
return j6_err_invalid_arg;
channel *c = static_cast<channel*>(o);
channel *c = get_handle<channel>(handle);
if (!c) return j6_err_invalid_arg;
return c->dequeue(len, data);
}