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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /tools/profiler/tests/test_enterjit_osr.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'tools/profiler/tests/test_enterjit_osr.js')
-rw-r--r--tools/profiler/tests/test_enterjit_osr.js59
1 files changed, 59 insertions, 0 deletions
diff --git a/tools/profiler/tests/test_enterjit_osr.js b/tools/profiler/tests/test_enterjit_osr.js
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+++ b/tools/profiler/tests/test_enterjit_osr.js
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+// 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() {
+ let p = Cc["@mozilla.org/tools/profiler;1"];
+ // Just skip the test if the profiler component isn't present.
+ if (!p)
+ return;
+ p = p.getService(Ci.nsIProfiler);
+ if (!p)
+ return;
+
+ // This test assumes that it's starting on an empty SPS stack.
+ // (Note that the other profiler tests also assume the profiler
+ // isn't already started.)
+ do_check_true(!p.IsActive());
+
+ const ms = 5;
+ p.StartProfiler(100, ms, ["js"], 1);
+
+ function arbitrary_name(){
+ // 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) {
+ do_print("loop: ms = " + delayMS);
+ let then = Date.now();
+ do {
+ let n = 10000;
+ while (--n); // OSR happens here
+ // Spin in the hope of getting a sample.
+ } while (Date.now() - then < delayMS);
+ let pr = p.getProfileData().threads[0];
+ if (pr.samples.data.length > 0 || delayMS > 30000)
+ return pr;
+ delayMS *= 2;
+ }
+ };
+
+ var profile = arbitrary_name();
+
+ do_check_neq(profile.samples.data.length, 0);
+ var lastSample = profile.samples.data[profile.samples.data.length - 1];
+ var stack = getInflatedStackLocations(profile, lastSample);
+ do_print(stack);
+
+ // All we can really check here is ensure that there is exactly
+ // one arbitrary_name frame in the list.
+ var gotName = false;
+ for (var i = 0; i < stack.length; i++) {
+ if (stack[i].match(/arbitrary_name/)) {
+ do_check_eq(gotName, false);
+ gotName = true;
+ }
+ }
+ do_check_eq(gotName, true);
+
+ p.StopProfiler();
+}