rusage: Refactor test programs

Change-Id: I846a6416acf903f7fa19db98d4d937c51c10b4af

test/rusage/009_mck.c

@@ -0,0 +1,75 @@
+#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 <sys/ipc.h>
+#include <sys/shm.h>
+#include "util.h"
+
+#define DEBUG
+
+int sz_mem[] = {
+	4 * (1ULL<<10),
+	2 * (1ULL<<20),
+	1 * (1ULL<<30),
+	134217728};
+
+#define SZ_INDEX 0
+
+int main(int argc, char **argv)
+{
+	void *mem;
+	int ret = 0;
+	pid_t pid;
+	int status;
+	key_t key = ftok(argv[0], 0);
+	int shmid;
+
+	shmid = shmget(key, sz_mem[SZ_INDEX], IPC_CREAT | 0660);
+	CHKANDJUMP(shmid == -1, 255, "shmget failed: %s\n", strerror(errno));
+
+	pid = fork();
+	CHKANDJUMP(pid == -1, 255, "fork failed\n");
+	if (pid == 0) {
+		mem = shmat(shmid, NULL, 0);
+		CHKANDJUMP(mem == (void *)-1, 255, "shmat failed: %s\n",
+			   strerror(errno));
+
+		*((unsigned long *)mem) = 0x1234;
+
+		ret = shmdt(mem);
+		CHKANDJUMP(ret == -1, 255, "shmdt failed\n");
+
+		_exit(123);
+	} else {
+		mem = shmat(shmid, NULL, 0);
+		CHKANDJUMP(mem == (void *)-1, 255, "shmat failed: %s\n",
+			   strerror(errno));
+
+
+		ret = waitpid(pid, &status, 0);
+		CHKANDJUMP(ret == -1, 255, "waitpid failed\n");
+
+		printf("%lx\n", *((unsigned long *)mem));
+
+#if 0
+		struct shmid_ds buf;
+
+		ret = shmctl(shmid, IPC_RMID, &buf);
+		CHKANDJUMP(ret == -1, 255, "shmctl failed\n");
+#endif
+
+		ret = shmdt(mem);
+		CHKANDJUMP(ret == -1, 255, "shmdt failed\n");
+	}
+
+ fn_exit:
+	return ret;
+ fn_fail:
+	goto fn_exit;
+}