Added new routines from POSIX 1003.1j. This is alpha level code.

        * spin.c: New module implementing spin locks.
        * barrier.c: New module implementing barriers.
        * pthread.h (_POSIX_SPIN_LOCKS): defined.
        (_POSIX_BARRIERS): Defined.
        (pthread_spin_*): Defined.
        (pthread_barrier*): Defined.
        (PTHREAD_BARRIER_SERIAL_THREAD): Defined.
        * implement.h (pthread_spinlock_t_): Defined.
        (pthread_barrier_t_): Defined.
        (pthread_barrierattr_t_): Defined.

        * mutex.c (pthread_mutex_lock): Return with the error
        if an auto-initialiser initialisation fails.

        * nonportable.c (pthread_getprocessors_np): New; gets the
        number of available processors for the current process.

1 files changed, 19 insertions, 1 deletions

diff --git a/implement.h b/implement.h
index e2acba3..34055dd 100644
--- a/implement.h
+++ b/implement.h
@@ -136,6 +136,8 @@ struct sem_t_ {
 
 #define PTW32_OBJECT_AUTO_INIT ((void *) -1)
 #define PTW32_OBJECT_INVALID   NULL
+#define PTW32_SPIN_UNLOCKED    ((void *) 1)
+#define PTW32_SPIN_LOCKED      ((void *) 2)
 
 struct pthread_mutex_t_ {
   LONG lock_idx;
@@ -146,12 +148,28 @@ struct pthread_mutex_t_ {
   CRITICAL_SECTION try_lock_cs;
 };
 
-
 struct pthread_mutexattr_t_ {
   int pshared;
   int kind;
 };
 
+struct pthread_spinlock_t_ {
+  union {
+    LONG interlock;
+    pthread_mutex_t mx;
+  } u;
+};
+
+struct pthread_barrier_t_ {
+  LONG nCurrentBarrierHeight;
+  LONG nInitialBarrierHeight;
+  sem_t semBarrierBreeched;
+  pthread_mutex_t mtxExclusiveAccess;
+};
+
+struct pthread_barrierattr_t_ {
+  int pshared;
+};
 
 struct pthread_key_t_ {
   DWORD key;