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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /tools/profiler/tests/xpcshell/test_enterjit_osr.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tools/profiler/tests/xpcshell/test_enterjit_osr.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tools/profiler/tests/xpcshell/test_enterjit_osr.js b/tools/profiler/tests/xpcshell/test_enterjit_osr.js new file mode 100644 index 0000000000..86845ddc76 --- /dev/null +++ b/tools/profiler/tests/xpcshell/test_enterjit_osr.js @@ -0,0 +1,52 @@ +// Check that the EnterJIT frame, added by the JIT trampoline and +// usable by a native unwinder to resume unwinding after encountering +// JIT code, is pushed as expected. +function run_test() { + // This test assumes that it's starting on an empty profiler stack. + // (Note that the other profiler tests also assume the profiler + // isn't already started.) + Assert.ok(!Services.profiler.IsActive()); + + const ms = 5; + Services.profiler.StartProfiler(10000, ms, ["js"]); + + function has_arbitrary_name_in_stack() { + // A frame for |arbitrary_name| has been pushed. Do a sequence of + // increasingly long spins until we get a sample. + var delayMS = 5; + while (1) { + info("loop: ms = " + delayMS); + const then = Date.now(); + do { + let n = 10000; + // eslint-disable-next-line no-empty + while (--n) {} // OSR happens here + // Spin in the hope of getting a sample. + } while (Date.now() - then < delayMS); + let profile = Services.profiler.getProfileData().threads[0]; + + // Go through all of the stacks, and search for this function name. + for (const sample of profile.samples.data) { + const stack = getInflatedStackLocations(profile, sample); + info(`The following stack was found: ${stack}`); + for (var i = 0; i < stack.length; i++) { + if (stack[i].match(/arbitrary_name/)) { + // This JS sample was correctly found. + return true; + } + } + } + + // Continue running this function with an increasingly long delay. + delayMS *= 2; + if (delayMS > 30000) { + return false; + } + } + } + Assert.ok( + has_arbitrary_name_in_stack(), + "A JS frame was found before the test timeout." + ); + Services.profiler.StopProfiler(); +} |