libstdc++ c++11 threads support

[martell]

Hey @jschmidlapp,
I'm looking to add c++11 threads to a new platform and pthreads-emb look like a nice base.
I have an issue however with libstdc++
pthread_t needs to be a scalar value and not a struct other wise you will get this error

libstdc++-v3/include/thread:88:30: error: no match for ‘operator<’ (operand types are ‘std::thread::native_handle_type {aka pte_handle_t}’ and ‘std::thread::native_handle_type {aka pte_handle_t}’) { return __x._M_thread < __y._M_thread; }

This is the patch I have created to satisfy the change but I am worried about propagating that throughout the library. The reuse thread stack would have to be removed to complete this.

diff --git a/pthread.h b/pthread.h
index 1d86403..eec5148 100644
--- a/pthread.h
+++ b/pthread.h
@@ -391,12 +391,15 @@ enum
      * that available with a simple pointer. It should scale for either
      * IA-32 or IA-64.
      */
+/*
     typedef struct
       {
-        void * p;                   /* Pointer to actual object */
-        unsigned int x;             /* Extra information - reuse count etc */
+        void * p;                   
+        unsigned int x;             
       } pte_handle_t;
+*/

+    typedef uintptr_t pte_handle_t;
     typedef pte_handle_t pthread_t;
     typedef struct pthread_attr_t_ * pthread_attr_t;
     typedef struct pthread_once_t_ pthread_once_t;

What are your thoughts?