Dynamic library loading functions were added to ddsrt
ddsrt_dlopen ddsrt_dlclose ddsrt_dlsym and ddsrt_dlerror functions can be used in posix and windows platforms that support dynamic loading Signed-off-by: Kurtulus Oksuztepe <kurtulus.oksuztepe@adlinktech.com>
This commit is contained in:
Kurtulus Oksuztepe
eboasson
parent
98cf8e2ae5
commit
a65d3db7c8
9 changed files with 633 additions and 3 deletions
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@ -10,9 +10,11 @@
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# SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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#
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include(CUnit)
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include(GenerateExportHeader)
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set(sources
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"atomics.c"
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"dynlib.c"
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"environ.c"
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"heap.c"
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"ifaddrs.c"
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@ -66,3 +68,47 @@ set(process_app_name "${CMAKE_CURRENT_BINARY_DIR}/process_app${CMAKE_EXECUTABLE_
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configure_file(
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"process_test.h.in" "${CMAKE_CURRENT_BINARY_DIR}/include/process_test.h" @ONLY)
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# Create a separate shared library that will be used to
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# test dynamic library loading.
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set(test_lib_name "dltestlib")
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add_library(${test_lib_name} SHARED dllib.c)
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# Force the lib to be at the same location, no matter what platform or build type.
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set_target_properties(
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${test_lib_name}
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PROPERTIES
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RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_CURRENT_BINARY_DIR}
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RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_CURRENT_BINARY_DIR}
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RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_CURRENT_BINARY_DIR}
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RUNTIME_OUTPUT_DIRECTORY_MINSIZEREL ${CMAKE_CURRENT_BINARY_DIR}
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LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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LIBRARY_OUTPUT_DIRECTORY_DEBUG ${CMAKE_CURRENT_BINARY_DIR}
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LIBRARY_OUTPUT_DIRECTORY_RELEASE ${CMAKE_CURRENT_BINARY_DIR}
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LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_CURRENT_BINARY_DIR}
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LIBRARY_OUTPUT_DIRECTORY_MINSIZEREL ${CMAKE_CURRENT_BINARY_DIR} )
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# Use proper export for this test lib.
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generate_export_header(${test_lib_name} BASE_NAME LIB_TEST)
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target_include_directories(${test_lib_name} PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
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# Let the cunit application know the location and name of the library.
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file(TO_NATIVE_PATH "${CMAKE_CURRENT_BINARY_DIR}" test_lib_native_dir)
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file(TO_NATIVE_PATH "/" test_lib_sep)
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string(REPLACE "\\" "\\\\" test_lib_dir ${test_lib_native_dir})
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string(REPLACE "\\" "\\\\" test_lib_sep ${test_lib_sep})
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configure_file("dl_test.h.in" "${CMAKE_CURRENT_BINARY_DIR}/include/dl_test.h" @ONLY)
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# Let ctest set the proper library path when executing library tests.
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unset(test_lib_tests)
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process_cunit_source_file("dynlib.c" test_lib_header test_lib_suites test_lib_tests)
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foreach(libtest ${test_lib_tests})
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string(REPLACE ":" ";" libtest ${libtest})
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list(GET libtest 0 suite)
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list(GET libtest 1 test)
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set(libtestname "CUnit_${suite}_${test}")
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if("${CMAKE_HOST_SYSTEM}" MATCHES ".*Windows.*")
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set_property(TEST ${libtestname} APPEND PROPERTY ENVIRONMENT "${test_lib_native_dir}")
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else()
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set_property(TEST ${libtestname} APPEND PROPERTY ENVIRONMENT "LD_LIBRARY_PATH=${test_lib_native_dir};$ENV{LD_LIBRARY_PATH}")
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endif()
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endforeach()
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22
src/ddsrt/tests/dl_test.h.in
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22
src/ddsrt/tests/dl_test.h.in
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@ -0,0 +1,22 @@
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/*
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* Copyright(c) 2006 to 2018 ADLINK Technology Limited and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0 which is available at
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* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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* v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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*/
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#ifndef DDSRT_TEST_DL_TEST_H
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#define DDSRT_TEST_DL_TEST_H
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/* Get the library name information from cmake. */
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#define TEST_LIB_NAME "@test_lib_name@"
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#define TEST_LIB_DIR "@test_lib_dir@"
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#define TEST_LIB_SEP "@test_lib_sep@"
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#define TEST_LIB_SUFFIX "@CMAKE_SHARED_LIBRARY_SUFFIX@"
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#define TEST_LIB_PREFIX "@CMAKE_SHARED_LIBRARY_PREFIX@"
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#endif /* DDSRT_TEST_DL_TEST_H */
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25
src/ddsrt/tests/dllib.c
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25
src/ddsrt/tests/dllib.c
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@ -0,0 +1,25 @@
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/*
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* Copyright(c) 2019 ADLINK Technology Limited and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0 which is available at
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* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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* v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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*/
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#include "lib_test_export.h"
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static int g_val = -1;
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LIB_TEST_EXPORT void set_int(int val)
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{
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g_val = val;
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}
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LIB_TEST_EXPORT int get_int(void)
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{
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return g_val;
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}
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197
src/ddsrt/tests/dynlib.c
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197
src/ddsrt/tests/dynlib.c
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@ -0,0 +1,197 @@
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/*
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* Copyright(c) 2019 ADLINK Technology Limited and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0 which is available at
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* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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* v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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*/
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <dds/ddsrt/dynlib.h>
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#include "CUnit/Test.h"
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#include "dds/ddsrt/heap.h"
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#include "dds/ddsrt/string.h"
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#include "dds/ddsrt/environ.h"
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#include "dl_test.h"
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#define TEST_LIB_FILE ""TEST_LIB_PREFIX""TEST_LIB_NAME""TEST_LIB_SUFFIX""
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#define TEST_LIB_ABSOLUTE ""TEST_LIB_DIR""TEST_LIB_SEP""TEST_LIB_FILE""
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#define TEST_ABORT_IF_NULL(var, msg) \
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do { \
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if (var == NULL) { \
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char buffer[256]; \
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r = ddsrt_dlerror(buffer, sizeof(buffer)); \
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CU_ASSERT_EQUAL_FATAL(r, DDS_RETCODE_OK); \
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printf("\n%s", buffer); \
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CU_FAIL_FATAL(msg); \
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} \
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} while(0)
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/*
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* Load a library.
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*/
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CU_Test(ddsrt_library, dlopen_path)
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{
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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printf("Absolute lib: %s\n", TEST_LIB_ABSOLUTE);
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r = ddsrt_dlopen(TEST_LIB_ABSOLUTE, false, &l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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CU_Test(ddsrt_library, dlopen_file)
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{
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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r = ddsrt_dlopen(TEST_LIB_FILE, false, &l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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CU_Test(ddsrt_library, dlopen_name)
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{
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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r = ddsrt_dlopen(TEST_LIB_NAME, true, &l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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CU_Test(ddsrt_library, dlopen_unknown)
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{
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char buffer[256];
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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r = ddsrt_dlopen("UnknownLib", false, &l);
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CU_ASSERT_PTR_NULL_FATAL(l);
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r = ddsrt_dlerror(buffer, sizeof(buffer));
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CU_ASSERT_EQUAL_FATAL(r, DDS_RETCODE_OK);
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printf("\n%s", buffer);
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}
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CU_Test(ddsrt_library, dlsym)
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{
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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void* f;
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r = ddsrt_dlopen(TEST_LIB_NAME, true, &l);
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CU_ASSERT_PTR_NOT_NULL(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlsym(l, "get_int", &f);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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CU_ASSERT_PTR_NOT_NULL(f);
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TEST_ABORT_IF_NULL(f, "ddsrt_dlsym(l, \"get_int\") failed.");
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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CU_Test(ddsrt_library, dlsym_unknown)
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{
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char buffer[256];
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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void* f;
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r = ddsrt_dlopen(TEST_LIB_NAME, true, &l);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l,"ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlsym(l, "UnknownSym", &f);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_ERROR);
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CU_ASSERT_PTR_NULL_FATAL(f);
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r = ddsrt_dlerror(buffer, sizeof(buffer));
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CU_ASSERT_EQUAL_FATAL(r, DDS_RETCODE_OK);
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printf("\n%s", buffer);
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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typedef void (*func_set_int)(int val);
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typedef int (*func_get_int)(void);
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CU_Test(ddsrt_library, call)
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{
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int get_int = 0;
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int set_int = 1234;
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func_get_int f_get;
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func_set_int f_set;
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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r = ddsrt_dlopen(TEST_LIB_NAME, true, &l);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlsym(l, "get_int", (void **)&f_get);
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CU_ASSERT_PTR_NOT_NULL(f_get);
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TEST_ABORT_IF_NULL(f_get, "ddsrt_dlsym(l, \"get_int\") failed.");
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r = ddsrt_dlsym(l, "set_int", (void **)&f_set);
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CU_ASSERT_PTR_NOT_NULL(f_set);
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TEST_ABORT_IF_NULL(f_set, "ddsrt_dlsym(l, \"set_int\") failed.");
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f_set(set_int);
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get_int = f_get();
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CU_ASSERT_EQUAL(set_int, get_int);
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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}
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CU_Test(ddsrt_library, dlclose_error)
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{
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dds_retcode_t r;
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ddsrt_dynlib_t l;
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r = ddsrt_dlopen(TEST_LIB_NAME, true, &l);
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CU_ASSERT_PTR_NOT_NULL(l);
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TEST_ABORT_IF_NULL(l, "ddsrt_dlopen() failed. Is the proper library path set?");
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r = ddsrt_dlclose(l);
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CU_ASSERT_EQUAL(r, DDS_RETCODE_OK);
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r = ddsrt_dlclose( l ); /*already closed handle */
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CU_ASSERT_EQUAL(r, DDS_RETCODE_ERROR);
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}
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CU_Test(ddsrt_library, dlerror_notfound)
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{
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char buffer[256];
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dds_retcode_t r;
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ddsrt_dlerror(buffer, sizeof(buffer));
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r = ddsrt_dlerror(buffer, sizeof(buffer));
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CU_ASSERT_EQUAL(r, DDS_RETCODE_NOT_FOUND);
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}
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