diff options
Diffstat (limited to 'packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads')
3 files changed, 160 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/Makefile b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/Makefile new file mode 100644 index 0000000..035413f --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/Makefile @@ -0,0 +1,6 @@ +LEVEL = ../../../make + +CXX_SOURCES := main.cpp +ENABLE_THREADS := YES + +include $(LEVEL)/Makefile.rules diff --git a/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/TestStopHookMultipleThreads.py b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/TestStopHookMultipleThreads.py new file mode 100644 index 0000000..c7fb53d --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/TestStopHookMultipleThreads.py @@ -0,0 +1,77 @@ +""" +Test that lldb stop-hook works for multiple threads. +""" + +from __future__ import print_function + + + +import os, time +import lldb +from lldbsuite.test import configuration +from lldbsuite.test.lldbtest import * + +class StopHookForMultipleThreadsTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + # Our simple source filename. + self.source = 'main.cpp' + # Find the line number to break inside main(). + self.first_stop = line_number(self.source, '// Set break point at this line, and add a stop-hook.') + self.thread_function = line_number(self.source, '// Break here to test that the stop-hook mechanism works for multiple threads.') + # Build dictionary to have unique executable names for each test method. + self.exe_name = self.testMethodName + self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name} + + @expectedFlakeyFreeBSD("llvm.org/pr15037") + @expectedFlakeyLinux("llvm.org/pr15037") # stop hooks sometimes fail to fire on Linux + @expectedFailureHostWindows("llvm.org/pr22274: need a pexpect replacement for windows") + def test_stop_hook_multiple_threads(self): + """Test that lldb stop-hook works for multiple threads.""" + self.build(dictionary=self.d) + self.setTearDownCleanup(dictionary=self.d) + + import pexpect + exe = os.path.join(os.getcwd(), self.exe_name) + prompt = "(lldb) " + + # So that the child gets torn down after the test. + self.child = pexpect.spawn('%s %s' % (lldbtest_config.lldbExec, self.lldbOption)) + child = self.child + # Turn on logging for what the child sends back. + if self.TraceOn(): + child.logfile_read = sys.stdout + + if lldb.remote_platform: + child.expect_exact(prompt) + child.sendline('platform select %s' % lldb.remote_platform.GetName()) + child.expect_exact(prompt) + child.sendline('platform connect %s' % configuration.lldb_platform_url) + child.expect_exact(prompt) + child.sendline('platform settings -w %s' % configuration.lldb_platform_working_dir) + + child.expect_exact(prompt) + child.sendline('target create %s' % exe) + + # Set the breakpoint, followed by the target stop-hook commands. + child.expect_exact(prompt) + child.sendline('breakpoint set -f main.cpp -l %d' % self.first_stop) + child.expect_exact(prompt) + child.sendline('breakpoint set -f main.cpp -l %d' % self.thread_function) + child.expect_exact(prompt) + + # Now run the program, expect to stop at the first breakpoint which is within the stop-hook range. + child.sendline('run') + child.expect_exact("Process") # 'Process 2415 launched', 'Process 2415 stopped' + child.expect_exact(prompt) + child.sendline('target stop-hook add -o "frame variable --show-globals g_val"') + child.expect_exact("Stop hook") # 'Stop hook #1 added.' + child.expect_exact(prompt) + + # Continue and expect to find the output emitted by the firing of our stop hook. + child.sendline('continue') + child.expect_exact('(uint32_t) ::g_val = ') diff --git a/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/main.cpp b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/main.cpp new file mode 100644 index 0000000..e193ae1 --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/stop-hook/multiple_threads/main.cpp @@ -0,0 +1,77 @@ +//===-- main.cpp ------------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include <chrono> +#include <cstdio> +#include <mutex> +#include <random> +#include <thread> + +std::default_random_engine g_random_engine{std::random_device{}()}; +std::uniform_int_distribution<> g_distribution{0, 3000000}; + +uint32_t g_val = 0; + +uint32_t +access_pool (bool flag = false) +{ + static std::mutex g_access_mutex; + if (!flag) + g_access_mutex.lock(); + + uint32_t old_val = g_val; + if (flag) + g_val = old_val + 1; + + if (!flag) + g_access_mutex.unlock(); + return g_val; +} + +void +thread_func (uint32_t thread_index) +{ + // Break here to test that the stop-hook mechanism works for multiple threads. + printf ("%s (thread index = %u) startng...\n", __FUNCTION__, thread_index); + + uint32_t count = 0; + uint32_t val; + while (count++ < 15) + { + // random micro second sleep from zero to 3 seconds + int usec = g_distribution(g_random_engine); + printf ("%s (thread = %u) doing a usleep (%d)...\n", __FUNCTION__, thread_index, usec); + std::this_thread::sleep_for(std::chrono::microseconds{usec}); + + if (count < 7) + val = access_pool (); + else + val = access_pool (true); + + printf ("%s (thread = %u) after usleep access_pool returns %d (count=%d)...\n", __FUNCTION__, thread_index, val, count); + } + printf ("%s (thread index = %u) exiting...\n", __FUNCTION__, thread_index); +} + + +int main (int argc, char const *argv[]) +{ + std::thread threads[3]; + + printf ("Before turning all three threads loose...\n"); // Set break point at this line, and add a stop-hook. + // Create 3 threads + for (auto &thread : threads) + thread = std::thread{thread_func, std::distance(threads, &thread)}; + + // Join all of our threads + for (auto &thread : threads) + thread.join(); + + return 0; +} |
