/*
* Copyright ( C ) 2015 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
#include <gtest/gtest.h>
#include <dlfcn.h>
#include "utils.h"
static int g_atfork_prepare_calls = 0 ;
static void AtForkPrepare1() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10 ) + 1 ; }
static void AtForkPrepare2() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10 ) + 2 ; }
static void AtForkPrepare3() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10 ) + 3 ; }
static void AtForkPrepare4() { g_atfork_prepare_calls = (g_atfork_prepare_calls * 10 ) + 4 ; }
static int g_atfork_parent_calls = 0 ;
static void AtForkParent1() { g_atfork_parent_calls = (g_atfork_parent_calls * 10 ) + 1 ; }
static void AtForkParent2() { g_atfork_parent_calls = (g_atfork_parent_calls * 10 ) + 2 ; }
static void AtForkParent3() { g_atfork_parent_calls = (g_atfork_parent_calls * 10 ) + 3 ; }
static void AtForkParent4() { g_atfork_parent_calls = (g_atfork_parent_calls * 10 ) + 4 ; }
static int g_atfork_child_calls = 0 ;
static void AtForkChild1() { g_atfork_child_calls = (g_atfork_child_calls * 10 ) + 1 ; }
static void AtForkChild2() { g_atfork_child_calls = (g_atfork_child_calls * 10 ) + 2 ; }
static void AtForkChild3() { g_atfork_child_calls = (g_atfork_child_calls * 10 ) + 3 ; }
static void AtForkChild4() { g_atfork_child_calls = (g_atfork_child_calls * 10 ) + 4 ; }
static void * g_atfork_test_handle = nullptr;
static void AtForkPrepare() {}
static void AtForkParent() {}
static void AtForkChild() { dlclose(g_atfork_test_handle); g_atfork_test_handle = dlopen("libtest_pthread_atfork.so" , RTLD_NOW | RTLD_LOCAL); }
TEST(pthread, pthread_atfork_with_dlclose) {
ASSERT_EQ(0 , pthread_atfork(AtForkPrepare1, AtForkParent1, AtForkChild1));
void * handle = dlopen("libtest_pthread_atfork.so" , RTLD_NOW | RTLD_LOCAL);
ASSERT_TRUE(handle != nullptr) << dlerror();
typedef int (*fn_t)(void (*)(void ), void (*)(void ), void (*)(void ));
fn_t fn = reinterpret_cast <fn_t>(dlsym(handle, "proxy_pthread_atfork" ));
ASSERT_TRUE(fn != nullptr) << dlerror();
// the library registers 2 additional atfork handlers in a constructor
ASSERT_EQ(0 , fn(AtForkPrepare2, AtForkParent2, AtForkChild2));
ASSERT_EQ(0 , fn(AtForkPrepare3, AtForkParent3, AtForkChild3));
ASSERT_EQ(0 , pthread_atfork(AtForkPrepare4, AtForkParent4, AtForkChild4));
pid_t pid = fork();
ASSERT_NE(-1 , pid) << strerror(errno);
if (pid == 0 ) {
ASSERT_EQ(1234 , g_atfork_child_calls);
_exit (0 );
}
ASSERT_EQ(1234 , g_atfork_parent_calls);
ASSERT_EQ(4321 , g_atfork_prepare_calls);
EXPECT_EQ(0 , dlclose(handle));
g_atfork_prepare_calls = g_atfork_parent_calls = g_atfork_child_calls = 0 ;
AssertChildExited(pid, 0 );
pid = fork();
ASSERT_NE(-1 , pid) << strerror(errno);
if (pid == 0 ) {
ASSERT_EQ(14 , g_atfork_child_calls);
_exit (0 );
}
ASSERT_EQ(14 , g_atfork_parent_calls);
ASSERT_EQ(41 , g_atfork_prepare_calls);
AssertChildExited(pid, 0 );
}
TEST(pthread, pthread_atfork_child_with_dlclose) {
g_atfork_test_handle = dlopen("libtest_pthread_atfork.so" , RTLD_NOW | RTLD_LOCAL);
ASSERT_TRUE(g_atfork_test_handle != nullptr) << dlerror();
typedef int (*fn_t)(void (*)(void ), void (*)(void ), void (*)(void ));
fn_t fn = reinterpret_cast <fn_t>(dlsym(g_atfork_test_handle, "proxy_pthread_atfork" ));
ASSERT_TRUE(fn != nullptr) << dlerror();
// the library registers 2 additional atfork handlers in a constructor
ASSERT_EQ(0 , pthread_atfork(AtForkPrepare, AtForkParent, AtForkChild));
pid_t pid = fork();
ASSERT_NE(-1 , pid) << strerror(errno);
if (pid == 0 ) {
_exit (0 );
}
AssertChildExited(pid, 0 );
EXPECT_EQ(0 , dlclose(g_atfork_test_handle));
g_atfork_test_handle = nullptr;
}
Messung V0.5 in Prozent C=92 H=93 G=92
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-28)
¤
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