| """ |
| Test the MemoryCache L1 flush. |
| """ |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import re |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| import lldbsuite.test.lldbutil as lldbutil |
| |
| |
| class MemoryCacheTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number to break inside main(). |
| self.line = line_number('main.cpp', '// Set break point at this line.') |
| |
| @expectedFlakeyOS(oslist=["windows"]) |
| def test_memory_cache(self): |
| """Test the MemoryCache class with a sequence of 'memory read' and 'memory write' operations.""" |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # Break in main() after the variables are assigned values. |
| lldbutil.run_break_set_by_file_and_line( |
| self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', 'stop reason = breakpoint']) |
| |
| # The breakpoint should have a hit count of 1. |
| self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, |
| substrs=[' resolved, hit count = 1']) |
| |
| # Read a chunk of memory containing &my_ints[0]. The number of bytes read |
| # must be greater than m_L2_cache_line_byte_size to make sure the L1 |
| # cache is used. |
| self.runCmd('memory read -f d -c 201 `&my_ints - 100`') |
| |
| # Check the value of my_ints[0] is the same as set in main.cpp. |
| line = self.res.GetOutput().splitlines()[100] |
| self.assertTrue(0x00000042 == int(line.split(':')[1], 0)) |
| |
| # Change the value of my_ints[0] in memory. |
| self.runCmd("memory write -s 4 `&my_ints` AA") |
| |
| # Re-read the chunk of memory. The cache line should have been |
| # flushed because of the 'memory write'. |
| self.runCmd('memory read -f d -c 201 `&my_ints - 100`') |
| |
| # Check the value of my_ints[0] have been updated correctly. |
| line = self.res.GetOutput().splitlines()[100] |
| self.assertTrue(0x000000AA == int(line.split(':')[1], 0)) |