Adding test case for dispatcher.

test/CMakeLists.txt

@@ -12,4 +12,5 @@ add_subdirectory(filter)
 add_subdirectory(wrap_main)
 #add_subdirectory(multi_agent_dlopen)
 add_subdirectory(symver)
-add_subdirectory(function_ptr)
+add_subdirectory(function_ptr)
+add_subdirectory(dispatcher)

test/dispatcher/CMakeLists.txt

@@ -0,0 +1,8 @@
+add_library(impl SHARED libimpl.c)
+add_library(dispatcher SHARED libdispatcher.c)
+target_link_libraries(dispatcher -ldl -lpthread)
+add_executable(test_dispatcher main.c)
+target_link_libraries(test_dispatcher gotcha dispatcher)
+gotcha_add_test(dispatcher_test test_dispatcher)
+set_property(TEST dispatcher_test APPEND PROPERTY ENVIRONMENT "GOTCHA_DEBUG=3")
+set_property(TEST dispatcher_test APPEND PROPERTY ENVIRONMENT "LD_LIBRARY_PATH=${CMAKE_CURRENT_BINARY_DIR}")

test/dispatcher/libdispatcher.c

@@ -0,0 +1,69 @@
+/*
+This file is part of GOTCHA.  For copyright information see the COPYRIGHT
+file in the top level directory, or at
+https://github.com/LLNL/gotcha/blob/master/COPYRIGHT
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License (as published by the Free
+Software Foundation) version 2.1 dated February 1999.  This program is
+distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+without even the IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE. See the terms and conditions of the GNU Lesser General Public License
+for more details.  You should have received a copy of the GNU Lesser General
+Public License along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#define _GNU_SOURCE
+#include <dlfcn.h>
+#include <math.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int foo(void);
+int bar(void);
+
+static void* impl_lib;
+static int (*impl_foo)(void);
+static int (*impl_bar)(void);
+
+static pthread_once_t init_once = PTHREAD_ONCE_INIT;
+void dispatch_init(void) {
+  fprintf(stderr, "Ed dispatch_init()\n");
+
+  impl_lib = dlopen("libimpl.so", RTLD_NOW);
+  impl_foo = dlsym(impl_lib, "foo");
+  impl_bar = dlsym(impl_lib, "bar");
+
+  int ret = impl_bar();
+
+  fprintf(stderr, "Ld dispatch_init() = %d\n", ret);
+}
+
+int foo(void) {
+  fprintf(stderr, "Ed foo()\n");
+
+  pthread_once(&init_once, dispatch_init);
+
+  int ret = impl_bar() + impl_foo();
+
+  fprintf(stderr, "Ld foo()\n");
+
+  return ret;
+}
+
+int bar(void) {
+  fprintf(stderr, "Ed bar()\n");
+
+  pthread_once(&init_once, dispatch_init);
+
+  int ret = impl_bar();
+
+  fprintf(stderr, "Ld bar()\n");
+
+  return ret;
+}

test/dispatcher/libimpl.c

@@ -0,0 +1,37 @@
+/*
+This file is part of GOTCHA.  For copyright information see the COPYRIGHT
+file in the top level directory, or at
+https://github.com/LLNL/gotcha/blob/master/COPYRIGHT
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License (as published by the Free
+Software Foundation) version 2.1 dated February 1999.  This program is
+distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+without even the IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE. See the terms and conditions of the GNU Lesser General Public License
+for more details.  You should have received a copy of the GNU Lesser General
+Public License along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#define _GNU_SOURCE
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int foo(void) {
+  fprintf(stderr, "Ei foo()\n");
+  fprintf(stderr, "Li foo()\n");
+
+  return 42;
+}
+
+int bar(void) {
+  fprintf(stderr, "Ei bar()\n");
+  fprintf(stderr, "Li bar()\n");
+
+  return 23;
+}

test/dispatcher/main.c

@@ -0,0 +1,64 @@
+/*
+This file is part of GOTCHA.  For copyright information see the COPYRIGHT
+file in the top level directory, or at
+https://github.com/LLNL/gotcha/blob/master/COPYRIGHT
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License (as published by the Free
+Software Foundation) version 2.1 dated February 1999.  This program is
+distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+without even the IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE. See the terms and conditions of the GNU Lesser General Public License
+for more details.  You should have received a copy of the GNU Lesser General
+Public License along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#define _GNU_SOURCE
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int foo(void);
+int bar(void);
+#include <gotcha/gotcha.h>
+
+static gotcha_wrappee_handle_t handle_foo;
+static gotcha_wrappee_handle_t handle_bar;
+
+static int do_foo(void) {
+  fprintf(stderr, "Ew foo()\n");
+
+  typeof(&do_foo) orig_foo = gotcha_get_wrappee(handle_foo);
+  int ret = orig_foo();
+
+  fprintf(stderr, "Lw foo() = %d\n", ret);
+
+  return ret;
+}
+
+static int do_bar(void) {
+  fprintf(stderr, "Ew bar()\n");
+
+  typeof(&do_bar) orig_bar = gotcha_get_wrappee(handle_bar);
+  int ret = orig_bar();
+
+  fprintf(stderr, "Lw bar() = %d\n", ret);
+
+  return ret;
+}
+
+static struct gotcha_binding_t bindings[] = {
+    {"foo", do_foo, &handle_foo},
+    {"bar", do_bar, &handle_bar},
+};
+
+int main(int ac, char *av[]) {
+  gotcha_wrap(bindings, 2, "test");
+  printf("%d\n", foo());
+
+  return 0;
+}