From 5c3fca7e54e1cb435921ff6cc2c99185a39450a5 Mon Sep 17 00:00:00 2001
From: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Date: Sat, 21 May 2011 19:50:23 +0300
Subject: [PATCH] raw: Add run_as_child_process function.

Allows running a test function in the context of another process.
---
 src/raw/test/Makefile      |  2 +-
 src/raw/test/test.h        |  6 ++++++
 src/raw/test/test_common.c | 44 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 src/raw/test/test_common.c

diff --git a/src/raw/test/Makefile b/src/raw/test/Makefile
index 793a511..fba469b 100644
--- a/src/raw/test/Makefile
+++ b/src/raw/test/Makefile
@@ -10,7 +10,7 @@ test: test.o test_sw_socket.o test_sw_bind.o test_sw_getsockname.o \
 	test_sw_sendto.o test_sw_recvfrom.o \
 	test_sw_sendmsg.o test_sw_recvmsg.o \
 	test_sw_setsockopt.o test_sw_getsockopt.o \
-	test_sw_close.o test_dummy.o
+	test_sw_close.o test_dummy.o test_common.o \
 	../swift_raw.o ../swift_list.o
 
 clean:
diff --git a/src/raw/test/test.h b/src/raw/test/test.h
index a830632..fe5c281 100644
--- a/src/raw/test/test.h
+++ b/src/raw/test/test.h
@@ -14,6 +14,12 @@ extern "C" {
 #include <stdio.h>
 #include <string.h>
 
+/* Test function type. */
+typedef void (*test_fn)(void);
+
+/* Run test function f in another process. */
+void run_as_child_process(test_fn f);
+
 /*
  * uncommend EXIT_IF_FAIL macro in order to stop test execution
  * at first failed test
diff --git a/src/raw/test/test_common.c b/src/raw/test/test_common.c
new file mode 100644
index 0000000..1a7b406
--- /dev/null
+++ b/src/raw/test/test_common.c
@@ -0,0 +1,44 @@
+/*
+ * Test suite functions.
+ *
+ * 2011, Razvan Deaconescu, razvan.deaconescu@cs.pub.ro
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+#include "util.h"
+#include "test.h"
+
+/* Run test function f in another process. */
+void run_as_child_process(test_fn f)
+{
+	pid_t pid;
+	int status;
+	int rc;
+
+	pid = fork();
+	switch (pid) {
+	case -1:	/* error */
+		ERR("fork");
+		exit(EXIT_FAILURE);
+	
+	case 0:		/* child process */
+		/* Run test function. */
+		f();
+		exit(EXIT_SUCCESS);
+		break;
+	
+	default:	/* parent process */
+		break;
+	}
+
+	/* Wait for child process. */
+	rc = waitpid(pid, &status, 0);
+	DIE(rc < 0, "waitpid");
+}
-- 
2.20.1