ck_spinlock: Add a HCLH implementation.

regressions/ck_spinlock/benchmark/ck_hclh.c

@@ -0,0 +1,7 @@
+#include "../ck_hclh.h"
+
+#ifdef THROUGHPUT
+#include "throughput.h"
+#elif defined(LATENCY)
+#include "latency.h"
+#endif

regressions/ck_spinlock/ck_hclh.h

@@ -0,0 +1,16 @@
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#define LOCK_NAME "ck_clh"
+#define LOCK_DEFINE static ck_spinlock_hclh_t CK_CC_CACHELINE *glob_lock; \
+		    static ck_spinlock_hclh_t CK_CC_CACHELINE *local_lock[CORES / 2]
+#define LOCK_STATE ck_spinlock_hclh_t *na = malloc(MAX(sizeof(ck_spinlock_hclh_t), 64))
+#define LOCK ck_spinlock_hclh_lock(&glob_lock, &local_lock[(core % CORES) / 2], na)
+#define UNLOCK ck_spinlock_hclh_unlock(&na)
+#define LOCK_INIT do {							\
+	int _i;								\
+	ck_spinlock_hclh_init(&glob_lock, malloc(MAX(sizeof(ck_spinlock_hclh_t), 64)), -1); \
+	for (_i = 0; _i < CORES / 2; _i++) {				\
+		ck_spinlock_hclh_init(&local_lock[_i], malloc(MAX(sizeof(ck_spinlock_hclh_t), 64)), _i);	} \
+} while (0)
+
+#define LOCKED ck_spinlock_hclh_locked(&glob_lock)
+

regressions/ck_spinlock/validate/ck_hclh.c

@@ -0,0 +1,2 @@
+#include "../ck_hclh.h"
+#include "validate.h"