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Code Issues Releases Activity

SERVER-42447 Add backtrace field to waitingforLatch

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This commit is contained in:
Shaileja Jain 2019-07-29 14:33:31 -04:00
parent 18bff834e3
commit 41da4f253c
2 changed files with 16 additions and 4 deletions
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7
jstests/core/currentop_waiting_for_latch.js
View File

@ -28,6 +28,13 @@ var result = getCurrentOp();
assert(result.hasOwnProperty("waitingForLatch"));
assert(result["waitingForLatch"].hasOwnProperty("timestamp"));
assert(result["waitingForLatch"].hasOwnProperty("captureName"));
assert(result["waitingForLatch"].hasOwnProperty("backtrace"));
result["waitingForLatch"]["backtrace"].forEach(function(obj) {
assert(obj.hasOwnProperty("addr"));
assert(typeof obj["addr"] === "string");
assert(obj.hasOwnProperty("path"));
assert(typeof obj["path"] === "string");
});
assert.commandWorked(
db.adminCommand({"configureFailPoint": 'keepDiagnosticCaptureOnFailedLock', "mode": 'off'}));

13
src/mongo/db/curop.cpp
View File

@ -323,14 +323,19 @@ void CurOp::reportCurrentOpForClient(OperationContext* opCtx,
std::shared_ptr<DiagnosticInfo> diagnostic = DiagnosticInfo::Diagnostic::get(client);
if (diagnostic && backtraceMode) {
// TODO: SERVER-42447 Add backtrace as bsonobj to waitingForLatch
BSONObjBuilder waitingForLatchBuilder;
BSONObjBuilder waitingForLatchBuilder(infoBuilder->subobjStart("waitingForLatch"));
waitingForLatchBuilder.append("timestamp", diagnostic->getTimestamp());
waitingForLatchBuilder.append("captureName", diagnostic->getCaptureName());
infoBuilder->append("waitingForLatch", waitingForLatchBuilder.obj());
{
BSONArrayBuilder backtraceBuilder(waitingForLatchBuilder.subarrayStart("backtrace"));
for (const auto& frame : diagnostic->makeStackTrace().frames) {
BSONObjBuilder backtraceObj(backtraceBuilder.subobjStart());
backtraceObj.append("addr", integerToHex(frame.instructionOffset));
backtraceObj.append("path", frame.objectPath);
}
}
}
if (MONGO_FAIL_POINT(keepDiagnosticCaptureOnFailedLock)) {
gHangLock.lock.unlock();
}