1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef _LIBUNWINDSTACK_TESTS_TEST_UTILS_H
18 #define _LIBUNWINDSTACK_TESTS_TEST_UTILS_H
19
20 #include <signal.h>
21 #include <sys/ptrace.h>
22 #include <sys/types.h>
23 #include <sys/wait.h>
24
25 namespace unwindstack {
26
27 class TestScopedPidReaper {
28 public:
TestScopedPidReaper(pid_t pid)29 TestScopedPidReaper(pid_t pid) : pid_(pid) {}
~TestScopedPidReaper()30 ~TestScopedPidReaper() {
31 kill(pid_, SIGKILL);
32 waitpid(pid_, nullptr, 0);
33 }
34
35 private:
36 pid_t pid_;
37 };
38
TestQuiescePid(pid_t pid)39 inline bool TestQuiescePid(pid_t pid) {
40 siginfo_t si;
41 bool ready = false;
42 // Wait for up to 5 seconds.
43 for (size_t i = 0; i < 5000; i++) {
44 if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {
45 ready = true;
46 break;
47 }
48 usleep(1000);
49 }
50 return ready;
51 }
52
53 void TestCheckForLeaks(void (*unwind_func)(void*), void* data);
54
55 } // namespace unwindstack
56
57 #endif // _LIBUNWINDSTACK_TESTS_TEST_UTILS_H
58