Kernel+LibPthread: pthread_create handles pthread_attr_t

Add an initial implementation of pthread attributes for:
  * detach state (joinable, detached)
  * schedule params (just priority)
  * guard page size (as skeleton) (requires kernel support maybe?)
  * stack size and user-provided stack location (4 or 8 MB only, must be aligned)

Add some tests too, to the thread test program.

Also, LibC: Move pthread declarations to sys/types.h, where they belong.

2 files changed, 15 insertions, 1 deletions

diff --git a/Libraries/LibC/limits.h b/Libraries/LibC/limits.h
index 1c5f583556..d89f7228ee 100644
--- a/Libraries/LibC/limits.h
+++ b/Libraries/LibC/limits.h
@@ -33,3 +33,5 @@
 #define MB_LEN_MAX 16
 
 #define ARG_MAX 65536
+
+#define PTHREAD_STACK_MIN 65536
diff --git a/Libraries/LibC/sys/types.h b/Libraries/LibC/sys/types.h
index cda19da382..9f7f3edab2 100644
--- a/Libraries/LibC/sys/types.h
+++ b/Libraries/LibC/sys/types.h
@@ -1,7 +1,7 @@
 #pragma once
 
-#include <stddef.h>
 #include <bits/stdint.h>
+#include <stddef.h>
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
@@ -60,4 +60,16 @@ struct utimbuf {
     time_t modtime;
 };
 
+typedef int pthread_t;
+typedef void* pthread_key_t;
+typedef void* pthread_once_t;
+typedef uint32_t pthread_mutex_t;
+typedef void* pthread_attr_t;
+typedef void* pthread_mutexattr_t;
+typedef void* pthread_cond_t;
+typedef void* pthread_rwlock_t;
+typedef void* pthread_rwlockatrr_t;
+typedef void* pthread_spinlock_t;
+typedef void* pthread_condattr_t;
+
 __END_DECLS