regressions: add pthread_mutex to spinlock test.

Author: Samy Al Bahra

regressions/ck_spinlock/benchmark/Makefile

@@ -10,6 +10,7 @@ OBJECTS=ck_ticket.THROUGHPUT ck_ticket.LATENCY			\
 	ck_ticket_pb.THROUGHPUT ck_ticket_pb.LATENCY		\
 	ck_anderson.THROUGHPUT ck_anderson.LATENCY		\
 	ck_spinlock.THROUGHPUT ck_spinlock.LATENCY		\
+	pthread.THROUGHPUT pthread.LATENCY			\
 	ck_hclh.THROUGHPUT ck_hclh.LATENCY
 
 all: $(OBJECTS)
@@ -80,6 +81,12 @@ ck_anderson.THROUGHPUT: ck_anderson.c
 ck_anderson.LATENCY: ck_anderson.c
 	$(CC) -DLATENCY $(CFLAGS) -o ck_anderson.LATENCY ck_anderson.c -lm
 
+pthread.THROUGHPUT: pthread.c
+	$(CC) -DTHROUGHPUT $(CFLAGS) -o pthread.THROUGHPUT pthread.c -lm
+
+pthread.LATENCY: pthread.c
+	$(CC) -DLATENCY $(CFLAGS) -o pthread.LATENCY pthread.c -lm
+
 clean:
 	rm -rf *.dSYM *.exe $(OBJECTS)
 

regressions/ck_spinlock/benchmark/pthread.c

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

regressions/ck_spinlock/pthread.h

@@ -0,0 +1,40 @@
+#include <ck_cc.h>
+#include <pthread.h>
+
+CK_CC_INLINE static void
+spin_lock(volatile unsigned int *lock)
+{
+#ifdef __x86_64__
+            __asm__ __volatile__(
+                    "\n1:\t"
+                    "lock ; decl %0\n\t"
+                    "jns 2f\n"
+                    "3:\n"
+                    "rep;nop\n\t"
+                    "cmpl $0,%0\n\t"
+                    "jle 3b\n\t"
+                    "jmp 1b\n"
+                    "2:\t" : "=m" (*lock) : : "memory");
+#else
+	*lock = 1;
+#endif
+
+          return;
+}
+
+CK_CC_INLINE static void
+spin_unlock(volatile unsigned int *lock)
+{
+#ifdef __x86_64__
+        __asm__ __volatile__("movl $1,%0" :"=m" (*lock) :: "memory");
+#else
+	*lock = 0;
+        return;
+#endif
+}
+
+#define LOCK_NAME "pthread_mutex"
+#define LOCK_DEFINE pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER
+#define LOCK pthread_mutex_lock(&lock)
+#define UNLOCK pthread_mutex_unlock(&lock)
+