src/runtime/trace.go

108 var trace struct {  var
192 	lock(&trace.bufLock)
194 	if trace.enabled || trace.shutdown {
195 		unlock(&trace.bufLock)
222 			id := trace.stackTab.put([]uintptr{gp.startpc + sys.PCQuantum})
243 	trace.ticksStart = cputicks()
244 	trace.timeStart = nanotime()
245 	trace.headerWritten = false
246 	trace.footerWritten = false
251 	trace.stringSeq = 0
252 	trace.strings = make(map[string]uint64)
254 	trace.seqGC = 0
256 	trace.enabled = true
261 		trace.markWorkerLabels[i], bufp = traceString(bufp, pid, label)
265 	unlock(&trace.bufLock)
279 	lock(&trace.bufLock)
281 	if !trace.enabled {
282 		unlock(&trace.bufLock)
298 	if trace.buf != 0 {
299 		buf := trace.buf
300 		trace.buf = 0
307 		trace.ticksEnd = cputicks()
308 		trace.timeEnd = nanotime()
310 		if trace.timeEnd != trace.timeStart {
316 	trace.enabled = false
317 	trace.shutdown = true
318 	unlock(&trace.bufLock)
324 	semacquire(&trace.shutdownSema)
326 		raceacquire(unsafe.Pointer(&trace.shutdownSema))
330 	lock(&trace.lock)
336 	if trace.buf != 0 {
339 	if trace.fullHead != 0 || trace.fullTail != 0 {
342 	if trace.reading != 0 || trace.reader != 0 {
345 	for trace.empty != 0 {
346 		buf := trace.empty
347 		trace.empty = buf.ptr().link
350 	trace.strings = nil
351 	trace.shutdown = false
352 	unlock(&trace.lock)
367 	lock(&trace.lock)
368 	trace.lockOwner = getg()
370 	if trace.reader != 0 {
374 		trace.lockOwner = nil
375 		unlock(&trace.lock)
380 	if buf := trace.reading; buf != 0 {
381 		buf.ptr().link = trace.empty
382 		trace.empty = buf
383 		trace.reading = 0
386 	if !trace.headerWritten {
387 		trace.headerWritten = true
388 		trace.lockOwner = nil
389 		unlock(&trace.lock)
393 	if trace.fullHead == 0 && !trace.shutdown {
394 		trace.reader.set(getg())
395 		goparkunlock(&trace.lock, waitReasonTraceReaderBlocked, traceEvGoBlock, 2)
396 		lock(&trace.lock)
399 	if trace.fullHead != 0 {
401 		trace.reading = buf
402 		trace.lockOwner = nil
403 		unlock(&trace.lock)
407 	if !trace.footerWritten {
408 		trace.footerWritten = true
410 …freq := float64(trace.ticksEnd-trace.ticksStart) * 1e9 / float64(trace.timeEnd-trace.timeStart) / …
411 		trace.lockOwner = nil
412 		unlock(&trace.lock)
418 		trace.stackTab.dump()
422 	if trace.shutdown {
423 		trace.lockOwner = nil
424 		unlock(&trace.lock)
429 			racerelease(unsafe.Pointer(&trace.shutdownSema))
432 		semrelease(&trace.shutdownSema)
436 	trace.lockOwner = nil
437 	unlock(&trace.lock)
444 	if trace.reader == 0 || (trace.fullHead == 0 && !trace.shutdown) {
447 	lock(&trace.lock)
448 	if trace.reader == 0 || (trace.fullHead == 0 && !trace.shutdown) {
449 		unlock(&trace.lock)
452 	gp := trace.reader.ptr()
453 	trace.reader.set(nil)
454 	unlock(&trace.lock)
465 	lock(&trace.lock)
467 	unlock(&trace.lock)
473 	if trace.fullHead == 0 {
474 		trace.fullHead = buf
476 		trace.fullTail.ptr().link = buf
478 	trace.fullTail = buf
483 	buf := trace.fullHead
487 	trace.fullHead = buf.ptr().link
488 	if trace.fullHead == 0 {
489 		trace.fullTail = 0
513 	if !trace.enabled && !mp.startingtrace {
591 	id := trace.stackTab.put(buf[:nstk])
601 	lock(&trace.bufLock)
602 	return mp, traceGlobProc, &trace.buf
608 		unlock(&trace.bufLock)
615 	owner := trace.lockOwner
618 		lock(&trace.lock)
623 	if trace.empty != 0 {
624 		buf = trace.empty
625 		trace.empty = buf.ptr().link
644 		unlock(&trace.lock)
655 	lock(&trace.stringsLock)
659 		raceacquire(unsafe.Pointer(&trace.stringsLock))
662 	if id, ok := trace.strings[s]; ok {
664 			racerelease(unsafe.Pointer(&trace.stringsLock))
666 		unlock(&trace.stringsLock)
671 	trace.stringSeq++
672 	id := trace.stringSeq
673 	trace.strings[s] = id
676 		racerelease(unsafe.Pointer(&trace.stringsLock))
678 	unlock(&trace.stringsLock)
863 	lock(&trace.lock)
865 	unlock(&trace.lock)
974 	traceEvent(traceEvGCStart, 3, trace.seqGC)
975 	trace.seqGC++
1042 	id := trace.stackTab.put([]uintptr{pc + sys.PCQuantum})
1051 …traceEvent(traceEvGoStartLabel, -1, uint64(_g_.goid), _g_.traceseq, trace.markWorkerLabels[_p_.ptr…
1099 	if ts != 0 && ts < trace.ticksStart {
1146 	if !trace.enabled {
1152 	if !trace.enabled && !mp.startingtrace {
1169 	if !trace.enabled {
1174 	if !trace.enabled && !mp.startingtrace {
1186 	if !trace.enabled {
1191 	if !trace.enabled && !mp.startingtrace {