From: Matt Mullins <mmullins@mmlx.us>
Date: Sat, 21 Sep 2013 17:49:27 +0000 (+0000)
Subject: Unmap the pages as we read them.
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=23f78c21c5101d0ba40c8552d895a5fb72cdd05a;p=mmap_everything.git

Unmap the pages as we read them.
---

diff --git a/mmap_everything.c b/mmap_everything.c
index ae1d529..d2db52d 100644
--- a/mmap_everything.c
+++ b/mmap_everything.c
@@ -45,8 +45,9 @@ int main() {
 	}
 
 	srand48(time(NULL));
-	int *pi;
+	int data;
 	do {
+		int *pi;
 		uint32_t lower = lrand48();
 		uint32_t upper = lrand48();
 
@@ -56,6 +57,12 @@ int main() {
 
 		pi = (void*)(pvalue);
 		printf("*%p = ", (void*)pi);
-		printf("%x\n", *pi);
-	} while (*pi == 0);
+		fflush(stdout);
+		data = *pi;
+		printf("%x\n", data);
+
+		if (munmap((void*)(pvalue & ~0xFFFL), 4096)) {
+			perror("munmap");
+		}
+	} while (data == 0);
 }