merged changes from main ck repo

.gitignore

@@ -13,6 +13,11 @@ build/Makefile
 *.a
 *.so
 *.dSYM
+regressions/ck_cohort/benchmark/ck_cohort.LATENCY
+regressions/ck_cohort/benchmark/ck_cohort.THROUGHPUT
+regressions/ck_pflock/benchmark/latency
+regressions/ck_pflock/benchmark/throughput
+regressions/ck_pflock/validate/validate
 regressions/ck_barrier/benchmark/throughput
 regressions/ck_barrier/validate/barrier_centralized
 regressions/ck_barrier/validate/barrier_combining

doc/CK_COHORT_INIT

@@ -53,8 +53,6 @@ consecutive acquisitions of its local lock, even if there are other threads wait
 If you are unsure of a value to use for the 
 .Fa pass_limit
 argument, you should use CK_COHORT_DEFAULT_LOCAL_PASS_LIMIT.
-Cohort instances do not allocate any new memory during initialization, so they
-can be freed later without using an explicit dispose method.
 .Sh SEE ALSO
 .Xr ck_cohort 3 ,
 .Xr CK_COHORT_PROTOTYPE 3 ,

include/ck_cohort.h

@@ -52,7 +52,6 @@ enum ck_cohort_state {
 #define CK_COHORT_UNLOCK(N, C, GC, LC) ck_cohort_##N##_unlock(C, GC, LC)
 
 #define CK_COHORT_PROTOTYPE(N, GT, GL, GU, LT, LL, LU)				\
- 										\
 	CK_COHORT_INSTANCE(N) {							\
 		GT *global_lock;						\
 		LT *local_lock;							\
@@ -80,6 +79,7 @@ enum ck_cohort_state {
 	ck_cohort_##N##_lock(CK_COHORT_INSTANCE(N) *cohort,			\
 	    void *global_context, void *local_context)				\
 	{									\
+										\
 		ck_pr_inc_uint(&cohort->waiting_threads);			\
 		LL(cohort->local_lock, local_context);				\
 		ck_pr_dec_uint(&cohort->waiting_threads);			\
@@ -96,6 +96,7 @@ enum ck_cohort_state {
 	ck_cohort_##N##_unlock(CK_COHORT_INSTANCE(N) *cohort,			\
 	    void *global_context, void *local_context)				\
 	{									\
+										\
 		if (ck_pr_load_uint(&cohort->waiting_threads) > 0		\
 		    && cohort->acquire_count < cohort->local_pass_limit) {	\
 			cohort->release_state = CK_COHORT_STATE_LOCAL;		\
@@ -111,7 +112,6 @@ enum ck_cohort_state {
 		return;								\
 	}
 
-
 #define CK_COHORT_INITIALIZER {							\
 	.global_lock = NULL,							\
 	.local_lock = NULL,							\
@@ -123,3 +123,4 @@ enum ck_cohort_state {
 
 
 #endif /* _CK_COHORT_H */
+

include/ck_pflock.h

@@ -13,7 +13,7 @@
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXCK_PFLOCK_PRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

regressions/Makefile

@@ -4,6 +4,7 @@ DIR=backoff	\
     bitmap	\
     brlock	\
     bytelock	\
+    cohort	\
     epoch	\
     fifo	\
     hp		\
@@ -21,6 +22,8 @@ DIR=backoff	\
 .PHONY: all clean check
 
 all:
+	$(MAKE) -C ./ck_cohort/validate all
+	$(MAKE) -C ./ck_cohort/benchmark all
 	$(MAKE) -C ./ck_bitmap/validate all
 	$(MAKE) -C ./ck_backoff/validate all
 	$(MAKE) -C ./ck_queue/validate all
@@ -55,9 +58,13 @@ all:
 	$(MAKE) -C ./ck_bag/validate all
 
 clean:
+	$(MAKE) -C ./ck_pflock/validate clean
+	$(MAKE) -C ./ck_pflock/benchmark clean
 	$(MAKE) -C ./ck_backoff/validate clean
 	$(MAKE) -C ./ck_bitmap/validate clean
 	$(MAKE) -C ./ck_queue/validate clean
+	$(MAKE) -C ./ck_cohort/validate clean
+	$(MAKE) -C ./ck_cohort/benchmark clean
 	$(MAKE) -C ./ck_brlock/validate clean
 	$(MAKE) -C ./ck_ht/validate clean
 	$(MAKE) -C ./ck_ht/benchmark clean

regressions/ck_cohort/benchmark/throughput.c

@@ -57,27 +57,35 @@ static struct counters *count;
 static uint64_t nthr;
 static unsigned int n_cohorts;
 static unsigned int barrier;
-
-int critical __attribute__((aligned(64)));
+static int critical CK_CC_CACHELINE;
 
 static void
 ck_spinlock_lock_with_context(ck_spinlock_t *lock, void *context)
 {
+
 	(void)context;
 	ck_spinlock_lock(lock);
+	return;
 }
 
 static void
 ck_spinlock_unlock_with_context(ck_spinlock_t *lock, void *context)
 {
+
 	(void)context;
 	ck_spinlock_unlock(lock);
+	return;
 }
 
 CK_COHORT_PROTOTYPE(basic,
     ck_spinlock_t, ck_spinlock_lock_with_context, ck_spinlock_unlock_with_context,
     ck_spinlock_t, ck_spinlock_lock_with_context, ck_spinlock_unlock_with_context)
-static CK_COHORT_INSTANCE(basic) *cohorts;
+
+struct cohort_record {
+	CK_COHORT_INSTANCE(basic) cohort;
+} CK_CC_CACHELINE;
+static struct cohort_record *cohorts;
+
 static ck_spinlock_t global_lock = CK_SPINLOCK_INITIALIZER;
 
 struct block {
@@ -94,12 +102,13 @@ fairness(void *null)
 	unsigned int core;
 	CK_COHORT_INSTANCE(basic) *cohort;
 
+
 	if (aff_iterate_core(&a, &core)) {
 		perror("ERROR: Could not affine thread");
 		exit(EXIT_FAILURE);
 	}
 
-	cohort = cohorts + (core / (int)(a.delta)) % n_cohorts;
+	cohort = &((cohorts + (core / (int)(a.delta)) % n_cohorts)->cohort);
 
 	while (ck_pr_load_uint(&ready) == 0);
 
@@ -118,7 +127,7 @@ fairness(void *null)
 		CK_COHORT_UNLOCK(basic, cohort, NULL, NULL);
 	}
 
-	return (NULL);
+	return NULL;
 }
 
 int
@@ -133,43 +142,35 @@ main(int argc, char *argv[])
 	if (argc != 5) {
 		ck_error("Usage: ck_cohort <number of cohorts> <threads per cohort> "
 			"<affinity delta> <critical section>\n");
-		exit(EXIT_FAILURE);
 	}
 
 	n_cohorts = atoi(argv[1]);
 	if (n_cohorts <= 0) {
 		ck_error("ERROR: Number of cohorts must be greater than 0\n");
-		exit(EXIT_FAILURE);
 	}
 
 	nthr = n_cohorts * atoi(argv[2]);
 	if (nthr <= 0) {
 		ck_error("ERROR: Number of threads must be greater than 0\n");
-		exit(EXIT_FAILURE);
 	}
 
 	critical = atoi(argv[4]);
 	if (critical < 0) {
 		ck_error("ERROR: critical section cannot be negative\n");
-		exit(EXIT_FAILURE);
 	}
 
 	threads = malloc(sizeof(pthread_t) * nthr);
 	if (threads == NULL) {
 		ck_error("ERROR: Could not allocate thread structures\n");
-		exit(EXIT_FAILURE);
-	}
 
-	cohorts = malloc(sizeof(CK_COHORT_INSTANCE(basic)) * n_cohorts);
+	cohorts = malloc(sizeof(struct cohort_record) * n_cohorts);
 	if (cohorts == NULL) {
 		ck_error("ERROR: Could not allocate cohort structures\n");
-		exit(EXIT_FAILURE);
 	}
 
 	context = malloc(sizeof(struct block) * nthr);
 	if (context == NULL) {
 		ck_error("ERROR: Could not allocate thread contexts\n");
-		exit(EXIT_FAILURE);
 	}
 
 	a.delta = atoi(argv[2]);
@@ -178,7 +179,6 @@ main(int argc, char *argv[])
 	count = malloc(sizeof(*count) * nthr);
 	if (count == NULL) {
 		ck_error("ERROR: Could not create acquisition buffer\n");
-		exit(EXIT_FAILURE);
 	}
 	memset(count, 0, sizeof(*count) * nthr);
 
@@ -187,9 +187,8 @@ main(int argc, char *argv[])
 		local_lock = malloc(max(CK_MD_CACHELINE, sizeof(ck_spinlock_t)));
 		if (local_lock == NULL) {
 			ck_error("ERROR: Could not allocate local lock\n");
-			exit(EXIT_FAILURE);
 		}
-		CK_COHORT_INIT(basic, cohorts + i, &global_lock, local_lock,
+		CK_COHORT_INIT(basic, &((cohorts + i)->cohort), &global_lock, local_lock,
 		    CK_COHORT_DEFAULT_LOCAL_PASS_LIMIT);
 		local_lock = NULL;
 	}
@@ -200,7 +199,6 @@ main(int argc, char *argv[])
 		context[i].tid = i;
 		if (pthread_create(&threads[i], NULL, fairness, context + i)) {
 			ck_error("ERROR: Could not create thread %d\n", i);
-			exit(EXIT_FAILURE);
 		}
 	}
 	fprintf(stderr, "done\n");
@@ -228,6 +226,6 @@ main(int argc, char *argv[])
 	printf("# average     : %15" PRIu64 "\n", v);
 	printf("# deviation   : %.2f (%.2f%%)\n\n", sqrt(d / nthr), (sqrt(d / nthr) / v) * 100.00);
 
-	return (0);
+	return 0;
 }
 

regressions/ck_cohort/validate/Makefile

@@ -8,7 +8,7 @@ validate: validate.c ../../../include/ck_cohort.h
 	$(CC) $(CFLAGS) -o validate validate.c
 
 check: all
-	./validate $(CORES) 1
+	./validate `expr $(CORES) / 2` 2 1
 
 clean:
 	rm -rf *.dSYM *~ *.o $(OBJECTS)