feat: added ps command

include/myke/tasks/task.h

@@ -27,7 +27,7 @@ void task_suspend();
 
 pid_t task_get_current_tid();
 
-void task_signal(uint32_t tid);
+void task_signal(pid_t tid);
 
 void task_lock_acquire();
 
@@ -35,4 +35,6 @@ void task_ensure_enabled();
 
 void task_lock_free();
 
+void task_print_all();
+
 #endif //NEW_KERNEL_TASK_H

kernel/command.c

@@ -17,6 +17,7 @@
 #include <myke/libk/libk.h>
 #include <myke/mem/malloc.h>
 #include <myke/mem/mem.h>
+#include <myke/tasks/task.h>
 #include <myke/util/power.h>
 
 #ifdef ENABLE_SELF_TEST
@@ -50,6 +51,8 @@ void help(const char *args);
 
 void shutdown(const char *args);
 
+void ps(const char *args);
+
 #ifdef ENABLE_SELF_TEST
 
 void explode(const char *args);
@@ -70,6 +73,7 @@ cmd_handler cmd_handlers[] = {
         {"print", print},
         {"ide", ide},
         {"shutdown", shutdown},
+        {"ps", ps},
 #ifdef ENABLE_SELF_TEST
         {"slingurl", slingurl},
         {"kill-self", kill_self},
@@ -115,6 +119,10 @@ void shutdown(const char *args) {
     power_shutdown();
 }
 
+void ps(const char *args) {
+    task_print_all();
+}
+
 void print_bootinfo() {
     printf("Bootloader name: %s\n"
            "cmdline: %s\n",

kernel/tasks/locking.c

@@ -12,7 +12,7 @@
 #include <myke/libk/syscall.h>
 
 typedef struct lock_fifo_entry {
-    uint32_t tid;
+    pid_t tid;
     struct lock_fifo_entry *next;
 } lock_fifo_entry_t;
 

kernel/tasks/task.c

@@ -4,6 +4,7 @@
 
 #include <attributes.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -103,7 +104,7 @@ pid_t task_get_current_tid() {
     return current_task->tid;
 }
 
-void task_signal(uint32_t tid) {
+void task_signal(pid_t tid) {
     task_t *t = first_task;
     while (t != NULL) {
         if (t->tid == tid) {
@@ -312,3 +313,16 @@ void task_end(pid_t tid) {
         t = t->next;
     }
 }
+
+void task_print_all() {
+    // acquiring task lock as reference to current task may disappear
+    // might overrun kprint buffer
+    task_lock_acquire();
+    printf("tasks:\n");
+    task_t *c = first_task;
+    while (c != NULL) {
+        printf("%d - %s\n", c->tid, c->name);
+        c = c->next;
+    }
+    task_lock_free();
+}