rusage: Refactor test programs

Change-Id: I846a6416acf903f7fa19db98d4d937c51c10b4af

test/rusage/008_mck.c

@@ -0,0 +1,66 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include "util.h"
+
+#define DEBUG
+
+int sz_mem[] = {
+	4 * (1ULL<<10),
+	2 * (1ULL<<20),
+	1 * (1ULL<<30),
+	134217728};
+
+#define SZ_INDEX 0
+#define NUM_AREAS 1
+
+int main(int argc, char **argv)
+{
+	void *mem;
+	int ret = 0;
+	pid_t pid;
+	int status;
+	int fd;
+	unsigned long val;
+
+	pid = fork();
+	CHKANDJUMP(pid == -1, 255, "fork failed\n");
+	if (pid == 0) {
+		fd = open("./file", O_RDWR);
+		CHKANDJUMP(fd == -1, 255, "open failed\n");
+
+		mem = mmap(0, sz_mem[SZ_INDEX], PROT_READ | PROT_WRITE,
+			   MAP_SHARED, fd, 0);
+		CHKANDJUMP(mem == MAP_FAILED, 255, "mmap failed\n");
+
+		val = *((unsigned long *)mem);
+		printf("val=%lx\n", val);
+
+		_exit(123);
+	} else {
+		fd = open("./file", O_RDWR);
+		CHKANDJUMP(fd == -1, 255, "open failed\n");
+
+		mem = mmap(0, sz_mem[SZ_INDEX], PROT_READ | PROT_WRITE,
+			   MAP_SHARED, fd, 0);
+		CHKANDJUMP(mem == MAP_FAILED, 255, "mmap failed\n");
+
+		val = *((unsigned long *)mem);
+		printf("val=%lx\n", val);
+
+		ret = waitpid(pid, &status, 0);
+		CHKANDJUMP(ret == -1, 255, "waitpid failed\n");
+		printf("exit status=%d\n", WEXITSTATUS(status));
+	}
+
+ fn_exit:
+	return ret;
+ fn_fail:
+	goto fn_exit;
+}