1 files changed, 28 insertions, 6 deletions
diff --git a/src/kernel/task.h b/src/kernel/task.h
index 50be93a..574dfa7 100644
--- a/src/kernel/task.h
+++ b/src/kernel/task.h
@@ -5,10 +5,20 @@
 #include <stdint.h>
 
 #define TASK_NAME_LEN 15
-
-enum wait_mode {
-  NONE,
-  PROCESS_END,
+#define MAX_WAITS 16
+
+struct wait {
+  enum {
+    NONE,
+    PROCESS_END,
+    WINDOW_ACTION,
+    IPC_RECEIVE,
+    IPC_RECEIVE_ANY,
+    IPC_SEND
+  } mode;
+  union {
+    struct task_state *task;
+  };
 };
 
 struct task_state {
@@ -23,12 +33,19 @@ struct task_state {
   uint32_t ebp;
   uint32_t esp;
 
-  enum wait_mode wait_mode;
-  uint32_t wait_arg;
+  uint32_t stack_bottom;
+
+  struct wait waits[MAX_WAITS];
+  bool waiting;
 
   char name[TASK_NAME_LEN + 1];
 } __attribute__ ((packed));
 
+void add_wait(struct wait wait);
+void unwait_any(struct wait wait);
+void unwait(struct task_state *task, struct wait wait);
+
+extern struct task_state tasks[];
 extern struct task_state *active_task;
 
 void init_tasks();
@@ -38,4 +55,9 @@ void advance_active_task();
 
 void delete_task(struct task_state *state);
 
+uint32_t ipc_send(uint32_t reader_handle, uint32_t count, const void *buffer);
+uint32_t ipc_read(uint32_t sender_handle, uint32_t count, void *buffer);
+
+uint32_t find_unread_ipc();
+
 #endif
 \ No newline at end of file