Test to verify that the runtime loader semaphore is not initialized

after fork().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21885 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/system/libroot/posix/Jamfile

@@ -18,6 +18,10 @@ SimpleTest sigsetjmp_test
 	: sigsetjmp_test.c
 ;
 
+SimpleTest init_rld_after_fork_test
+	: init_rld_after_fork_test.cpp
+;
+
 # Tell Jam where to find these sources
 SEARCH on [ FGristFiles
 		syslog.cpp

src/tests/system/libroot/posix/init_rld_after_fork_test.cpp

@@ -0,0 +1,40 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <OS.h>
+
+
+static void
+list_semaphores(const char* process)
+{
+	printf("%s (%ld) semaphores:\n", process, find_thread(NULL));
+
+	sem_info semInfo;
+	int32 cookie = 0;
+	while (get_next_sem_info(B_CURRENT_TEAM, &cookie, &semInfo) == B_OK)
+		printf("  %9ld  %s\n", semInfo.sem, semInfo.name);
+}
+
+
+int
+main()
+{
+	pid_t child = fork();
+	if (child < 0) {
+		fprintf(stderr, "Error: fork() failed: %s\n", strerror(errno));
+		exit(1);
+	}
+
+	if (child > 0) {
+		// the parent process -- wait for the child to finish
+		status_t result;
+		wait_for_thread(child, &result);
+	}
+
+	list_semaphores(child == 0 ? "child" : "parent");
+
+	return 0;
+}