[PATCH v2 06/10] test/buffer-share: add private memory option

[Bijan Mottahedeh <bijan.mottahedeh@oracle.com>]

Signed-off-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
---
 test/buffer-share.c | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/test/buffer-share.c b/test/buffer-share.c
index 81e0537..cbfbfb2 100644
--- a/test/buffer-share.c
+++ b/test/buffer-share.c
@@ -18,6 +18,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <linux/fs.h>
+#include <malloc.h>
 
 #include "liburing.h"
 
@@ -71,7 +72,8 @@ unsigned long shm_sz = SZ_2M;
 
 int no_read;
 int warned;
-int verbose = 0;
+int private;
+int verbose;
 
 enum {
 	REG_NOP = 0,
@@ -1120,8 +1122,11 @@ main(int argc, char *argv[])
 	int shmid, pid, ret = 0;
 	char c;
 
-	while ((c = getopt(argc, argv, "s:v:")) != -1)
+	while ((c = getopt(argc, argv, "ps:v:")) != -1)
 		switch (c) {
+		case 'p':
+			private++;
+			break;
 		case 's':
 			shm_sz = atoi(optarg) * SZ_2M;
 			break;
@@ -1155,10 +1160,19 @@ main(int argc, char *argv[])
 	if (shmid < 0)
 		exit(1);
 
-	shmbuf = shm_attach(shmid);
-	if (shmbuf == MAP_FAILED) {
-		shm_destroy(shmid, shmbuf);
-		exit(1);
+	if (private) {
+		printf("private\n");
+		shmbuf = memalign(4096, shm_sz);
+		if (shmbuf == NULL) {
+			perror("memalign");
+			exit(1);
+		}
+	} else {
+		shmbuf = shm_attach(shmid);
+		if (shmbuf == MAP_FAILED) {
+			shm_destroy(shmid, shmbuf);
+			exit(1);
+		}
 	}
 
 	create_buffers(shmbuf);
@@ -1178,7 +1192,8 @@ main(int argc, char *argv[])
 	ret |= test(TEST_IO,  FD, REG_NOP, REG_ATT, TEST_DFLT,  EFAULT);
 	ret |= test(TEST_IO,  FD, REG_PIN, REG_ATT, TEST_EXIT,  NONE);
 
-	shm_destroy(shmid, shmbuf);
+	if (!private)
+		shm_destroy(shmid, shmbuf);
 
 	return ret;
 }
-- 
1.8.3.1