3 files changed, 13 insertions, 7 deletions
diff --git a/system/include/gc.h b/system/include/gc.h
index e0419dcb..8c5a8989 100644
--- a/system/include/gc.h
+++ b/system/include/gc.h
@@ -29,6 +29,12 @@ void *GC_MALLOC(int bytes);
 /* Allocate memory for an object that the user promises will not contain pointers. */
 void *GC_MALLOC_ATOMIC(int bytes);
 
+/* Allocate memory that might container pointers but that can't be collected. */
+void *GC_MALLOC_UNCOLLECTABLE(int bytes);
+
+/* Reallocate a GC managed memory block to a new size. */
+void *GC_REALLOC(void *ptr, int newBytes);
+
 /* Explicitly deallocate an object. Dangerous as it forces a free and does not check if the object is reffed. */
 void GC_FREE(void *ptr);
 
@@ -36,6 +42,9 @@ void GC_FREE(void *ptr);
 void GC_REGISTER_FINALIZER_NO_ORDER(void *ptr, void (*func)(void *, void *),      void *arg,
                                                void *(*old_func)(void *, void *), void *old_arg);
 
+/* Gets the bytes allocated and managed by the GC */
+int GC_get_heap_size();
+
 /* Non-Boehm additions */
 
 /* Call this once per frame or such, it will collect if necessary */
diff --git a/system/include/libc/sys/features.h b/system/include/libc/sys/features.h
index 87a520a0..8c32bf04 100644
--- a/system/include/libc/sys/features.h
+++ b/system/include/libc/sys/features.h
@@ -26,7 +26,10 @@ extern "C" {
 #endif
 
 #if EMSCRIPTEN
-#define _POSIX_REALTIME_SIGNALS 1
+#define _POSIX_REALTIME_SIGNALS          1
+#define _POSIX_THREADS                   200112L
+#define _UNIX98_THREAD_MUTEX_ATTRIBUTES  1
+#define _POSIX_READER_WRITER_LOCKS       200112L
 #endif
 
 /* RTEMS adheres to POSIX -- 1003.1b with some features from annexes.  */
diff --git a/system/include/libc/sys/types.h b/system/include/libc/sys/types.h
index e90a74ac..c36f724c 100644
--- a/system/include/libc/sys/types.h
+++ b/system/include/libc/sys/types.h
@@ -24,12 +24,6 @@
 
 #include <machine/_types.h>
 
-#if EMSCRIPTEN
-  #define _POSIX_THREADS
-  #define _UNIX98_THREAD_MUTEX_ATTRIBUTES
-  #define _POSIX_READER_WRITER_LOCKS
-#endif
-
 #if defined(__rtems__) || defined(__XMK__) || defined(EMSCRIPTEN)
 /*
  *  The following section is RTEMS specific and is needed to more