sched: add struct and object types for task and thread objects

Makefile

@@ -19,7 +19,7 @@ include arch/$(SOCKS_ARCH)/config.mk
 # Platform-independent kernel source files
 ####################################
 
-KERNEL_SRC_DIRS := init kernel vm ds util obj test
+KERNEL_SRC_DIRS := init kernel vm ds util obj sched test
 KERNEL_C_FILES := $(foreach dir,$(KERNEL_SRC_DIRS),$(wildcard $(dir)/*.c))
 KERNEL_OBJ := $(addprefix $(BUILD_DIR)/,$(KERNEL_C_FILES:.c=.o))
 

include/socks/sched.h

@@ -0,0 +1,43 @@
+#ifndef SOCKS_SCHED_H_
+#define SOCKS_SCHED_H_
+
+#include <socks/pmap.h>
+#include <socks/queue.h>
+#include <socks/btree.h>
+#include <socks/status.h>
+
+typedef enum task_state {
+	TASK_RUNNING,
+	TASK_STOPPED,
+} task_state_t;
+
+typedef enum task_thread_state {
+	TASK_THREAD_READY,
+	TASK_THREAD_SLEEPING,
+	TASK_THREAD_STOPPED,
+} task_thread_state_t;
+
+typedef struct task {
+	struct task *t_parent;
+	unsigned int t_id;
+	task_state_t t_state;
+
+	pmap_t t_pmap;
+
+	btree_node_t t_tasklist;
+	queue_t t_threads;
+	queue_t t_children;
+} task_t;
+
+typedef struct task_thread {
+	task_thread_state_t tr_state;
+	unsigned int tr_id;
+	unsigned int tr_prio;
+
+	queue_entry_t tr_threads;
+	void *tr_kstack;
+} task_thread_t;
+
+extern kern_status_t sched_init(void);
+
+#endif

init/main.c

@@ -3,6 +3,7 @@
 #include <socks/test.h>
 #include <socks/printk.h>
 #include <socks/object.h>
+#include <socks/sched.h>
 #include <socks/machine/init.h>
 #include <socks/machine/cpu.h>
 
@@ -20,6 +21,7 @@ void kernel_init(uintptr_t arg)
 	ml_init(arg);
 
 	object_bootstrap();
+	sched_init();
 
 	run_all_tests();
 	

sched/sched.c

@@ -0,0 +1,31 @@
+#include <socks/object.h>
+#include <socks/sched.h>
+#include <socks/printk.h>
+
+static object_type_t task_type = {
+	.ob_name = "task",
+	.ob_size = sizeof(task_t),
+};
+
+static object_type_t thread_type = {
+	.ob_name = "thread",
+	.ob_size = sizeof(task_thread_t),
+};
+
+kern_status_t sched_init(void)
+{
+	kern_status_t status = KERN_OK;
+
+	status = object_type_register(&task_type);
+	if (status != KERN_OK) {
+		return status;
+	}
+
+	status = object_type_register(&thread_type);
+	if (status != KERN_OK) {
+		return status;
+	}
+	
+	printk("sched: initialised");
+	return status;
+}