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trace.cpp
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trace.cpp
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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#include "precomp.hpp"
#include <opencv2/core/utils/trace.hpp>
#include <opencv2/core/utils/trace.private.hpp>
#include <opencv2/core/utils/configuration.private.hpp>
#include <opencv2/core/opencl/ocl_defs.hpp>
#include <cstdarg> // va_start
#include <sstream>
#include <ostream>
#include <fstream>
#if 0
#define CV_LOG(...) CV_LOG_INFO(NULL, __VA_ARGS__)
#else
#define CV_LOG(...) {}
#endif
#if 0
#define CV_LOG_ITT(...) CV_LOG_INFO(NULL, __VA_ARGS__)
#else
#define CV_LOG_ITT(...) {}
#endif
#if 1
#define CV_LOG_TRACE_BAILOUT(tag, ...) CV_LOG_INFO(tag, __VA_ARGS__)
#else
#define CV_LOG_TRACE_BAILOUT(...) {}
#endif
#if 0
#define CV_LOG_PARALLEL(tag, ...) CV_LOG_INFO(tag, __VA_ARGS__)
#else
#define CV_LOG_PARALLEL(...) {}
#endif
#if 0
#define CV_LOG_CTX_STAT(tag, ...) CV_LOG_INFO(tag, __VA_ARGS__)
#else
#define CV_LOG_CTX_STAT(...) {}
#endif
#if 0
#define CV_LOG_SKIP(tag, ...) CV_LOG_INFO(tag, __VA_ARGS__)
#else
#define CV_LOG_SKIP(...) {}
#endif
namespace cv {
namespace utils {
namespace trace {
namespace details {
#ifdef OPENCV_TRACE
#ifdef _MSC_VER
#pragma warning(disable:4065) // switch statement contains 'default' but no 'case' labels
#endif
static bool getParameterTraceEnable()
{
static bool param_traceEnable = utils::getConfigurationParameterBool("OPENCV_TRACE", false);
return param_traceEnable;
}
// TODO lazy configuration flags
static int param_maxRegionDepthOpenCV = (int)utils::getConfigurationParameterSizeT("OPENCV_TRACE_DEPTH_OPENCV", 1);
static int param_maxRegionChildrenOpenCV = (int)utils::getConfigurationParameterSizeT("OPENCV_TRACE_MAX_CHILDREN_OPENCV", 1000);
static int param_maxRegionChildren = (int)utils::getConfigurationParameterSizeT("OPENCV_TRACE_MAX_CHILDREN", 10000);
static const cv::String& getParameterTraceLocation()
{
static cv::String param_traceLocation = utils::getConfigurationParameterString("OPENCV_TRACE_LOCATION", "OpenCVTrace");
return param_traceLocation;
}
#ifdef HAVE_OPENCL
static bool param_synchronizeOpenCL = utils::getConfigurationParameterBool("OPENCV_TRACE_SYNC_OPENCL", false);
#endif
#ifdef OPENCV_WITH_ITT
static bool param_ITT_registerParentScope = utils::getConfigurationParameterBool("OPENCV_TRACE_ITT_PARENT", false);
#endif
static const char* _spaces(int count)
{
static const char buf[64] =
" ";
return &buf[63 - (count & 63)];
}
/**
* Text-based trace messages
*/
class TraceMessage
{
public:
char buffer[1024];
size_t len;
bool hasError;
TraceMessage() :
len(0),
hasError(false)
{}
bool printf(const char* format, ...)
{
char* buf = &buffer[len];
size_t sz = sizeof(buffer) - len;
va_list ap;
va_start(ap, format);
int n = cv_vsnprintf(buf, (int)sz, format, ap);
va_end(ap);
if (n < 0 || (size_t)n > sz)
{
hasError = true;
return false;
}
len += n;
return true;
}
bool formatlocation(const Region::LocationStaticStorage& location)
{
return this->printf("l,%lld,\"%s\",%d,\"%s\",0x%llX\n",
(long long int)(*location.ppExtra)->global_location_id,
location.filename,
location.line,
location.name,
(long long int)(location.flags & ~0xF0000000));
}
bool formatRegionEnter(const Region& region)
{
bool ok = this->printf("b,%d,%lld,%lld,%lld",
(int)region.pImpl->threadID,
(long long int)region.pImpl->beginTimestamp,
(long long int)((*region.pImpl->location.ppExtra)->global_location_id),
(long long int)region.pImpl->global_region_id);
if (region.pImpl->parentRegion && region.pImpl->parentRegion->pImpl)
{
if (region.pImpl->parentRegion->pImpl->threadID != region.pImpl->threadID)
ok &= this->printf(",parentThread=%d,parent=%lld",
(int)region.pImpl->parentRegion->pImpl->threadID,
(long long int)region.pImpl->parentRegion->pImpl->global_region_id);
}
ok &= this->printf("\n");
return ok;
}
bool formatRegionLeave(const Region& region, const RegionStatistics& result)
{
CV_DbgAssert(region.pImpl->endTimestamp - region.pImpl->beginTimestamp == result.duration);
bool ok = this->printf("e,%d,%lld,%lld,%lld,%lld",
(int)region.pImpl->threadID,
(long long int)region.pImpl->endTimestamp,
(long long int)(*region.pImpl->location.ppExtra)->global_location_id,
(long long int)region.pImpl->global_region_id,
(long long int)result.duration);
if (result.currentSkippedRegions)
ok &= this->printf(",skip=%d", (int)result.currentSkippedRegions);
#ifdef HAVE_IPP
if (result.durationImplIPP)
ok &= this->printf(",tIPP=%lld", (long long int)result.durationImplIPP);
#endif
#ifdef HAVE_OPENCL
if (result.durationImplOpenCL)
ok &= this->printf(",tOCL=%lld", (long long int)result.durationImplOpenCL);
#endif
#ifdef HAVE_OPENVX
if (result.durationImplOpenVX)
ok &= this->printf(",tOVX=%lld", (long long int)result.durationImplOpenVX);
#endif
ok &= this->printf("\n");
return ok;
}
bool recordRegionArg(const Region& region, const TraceArg& arg, const char* value)
{
return this->printf("a,%d,%lld,%lld,\"%s\",\"%s\"\n",
region.pImpl->threadID,
(long long int)region.pImpl->beginTimestamp,
(long long int)region.pImpl->global_region_id,
arg.name,
value);
}
};
#ifdef OPENCV_WITH_ITT
static __itt_domain* domain = NULL;
static bool isITTEnabled()
{
static volatile bool isInitialized = false;
static bool isEnabled = false;
if (!isInitialized)
{
cv::AutoLock lock(cv::getInitializationMutex());
if (!isInitialized)
{
bool param_traceITTEnable = utils::getConfigurationParameterBool("OPENCV_TRACE_ITT_ENABLE", true);
if (param_traceITTEnable)
{
isEnabled = !!(__itt_api_version());
CV_LOG_ITT("ITT is " << (isEnabled ? "enabled" : "disabled"));
domain = __itt_domain_create("OpenCVTrace");
}
else
{
CV_LOG_ITT("ITT is disabled through OpenCV parameter");
isEnabled = false;
}
isInitialized = true;
}
}
return isEnabled;
}
#endif
Region::LocationExtraData::LocationExtraData(const LocationStaticStorage& location)
{
CV_UNUSED(location);
static int g_location_id_counter = 0;
global_location_id = CV_XADD(&g_location_id_counter, 1) + 1;
CV_LOG("Register location: " << global_location_id << " (" << (void*)&location << ")"
<< std::endl << " file: " << location.filename
<< std::endl << " line: " << location.line
<< std::endl << " name: " << location.name);
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
// Caching is not required here, because there is builtin cache.
// https://software.intel.com/en-us/node/544203:
// Consecutive calls to __itt_string_handle_create with the same name return the same value.
ittHandle_name = __itt_string_handle_create(location.name);
ittHandle_filename = __itt_string_handle_create(location.filename);
}
else
{
ittHandle_name = 0;
ittHandle_filename = 0;
}
#endif
}
/*static*/ Region::LocationExtraData* Region::LocationExtraData::init(const Region::LocationStaticStorage& location)
{
LocationExtraData** pLocationExtra = location.ppExtra;
CV_DbgAssert(pLocationExtra);
if (*pLocationExtra == NULL)
{
cv::AutoLock lock(cv::getInitializationMutex());
if (*pLocationExtra == NULL)
{
*pLocationExtra = new Region::LocationExtraData(location);
TraceStorage* s = getTraceManager().trace_storage.get();
if (s)
{
TraceMessage msg;
msg.formatlocation(location);
s->put(msg);
}
}
}
return *pLocationExtra;
}
Region::Impl::Impl(TraceManagerThreadLocal& ctx, Region* parentRegion_, Region& region_, const LocationStaticStorage& location_, int64 beginTimestamp_) :
location(location_),
region(region_),
parentRegion(parentRegion_),
threadID(ctx.threadID),
global_region_id(++ctx.region_counter),
beginTimestamp(beginTimestamp_),
endTimestamp(0),
directChildrenCount(0)
#ifdef OPENCV_WITH_ITT
,itt_id_registered(false)
,itt_id(__itt_null)
#endif
{
CV_DbgAssert(ctx.currentActiveRegion == parentRegion);
region.pImpl = this;
registerRegion(ctx);
enterRegion(ctx);
}
Region::Impl::~Impl()
{
#ifdef OPENCV_WITH_ITT
if (itt_id_registered)
{
CV_LOG_ITT(" Destroy ITT region: I=" << (void*)this);
__itt_id_destroy(domain, itt_id);
itt_id_registered = false;
}
#endif
region.pImpl = NULL;
}
void Region::Impl::enterRegion(TraceManagerThreadLocal& ctx)
{
ctx.currentActiveRegion = ®ion;
if (location.flags & REGION_FLAG_FUNCTION)
{
if ((location.flags & REGION_FLAG_APP_CODE) == 0)
{
ctx.regionDepthOpenCV++;
}
ctx.regionDepth++;
}
TraceStorage* s = ctx.getStorage();
if (s)
{
TraceMessage msg;
msg.formatRegionEnter(region);
s->put(msg);
}
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
__itt_id parentID = __itt_null;
if (param_ITT_registerParentScope && parentRegion && parentRegion->pImpl && parentRegion->pImpl->itt_id_registered && (location.flags & REGION_FLAG_REGION_FORCE) == 0)
parentID = parentRegion->pImpl->itt_id;
__itt_task_begin(domain, itt_id, parentID, (*location.ppExtra)->ittHandle_name);
}
#endif
}
void Region::Impl::leaveRegion(TraceManagerThreadLocal& ctx)
{
int64 duration = endTimestamp - beginTimestamp; CV_UNUSED(duration);
RegionStatistics result;
ctx.stat.grab(result);
ctx.totalSkippedEvents += result.currentSkippedRegions;
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "leaveRegion(): " << (void*)this << " " << result);
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
if (result.currentSkippedRegions)
{
__itt_metadata_add(domain, itt_id, __itt_string_handle_create("skipped trace entries"), __itt_metadata_u32, 1, &result.currentSkippedRegions);
}
#ifdef HAVE_IPP
if (result.durationImplIPP)
__itt_metadata_add(domain, itt_id, __itt_string_handle_create("tIPP"), __itt_metadata_u64, 1, &result.durationImplIPP);
#endif
#ifdef HAVE_OPENCL
if (result.durationImplOpenCL)
__itt_metadata_add(domain, itt_id, __itt_string_handle_create("tOpenCL"), __itt_metadata_u64, 1, &result.durationImplOpenCL);
#endif
#ifdef HAVE_OPENVX
if (result.durationImplOpenVX)
__itt_metadata_add(domain, itt_id, __itt_string_handle_create("tOpenVX"), __itt_metadata_u64, 1, &result.durationImplOpenVX);
#endif
__itt_task_end(domain);
}
#endif
TraceStorage* s = ctx.getStorage();
if (s)
{
TraceMessage msg;
msg.formatRegionLeave(region, result);
s->put(msg);
}
if (location.flags & REGION_FLAG_FUNCTION)
{
if ((location.flags & REGION_FLAG_APP_CODE) == 0)
{
ctx.regionDepthOpenCV--;
}
ctx.regionDepth--;
}
ctx.currentActiveRegion = parentRegion;
}
void Region::Impl::release()
{
delete this;
}
void Region::Impl::registerRegion(TraceManagerThreadLocal& ctx)
{
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
if (!itt_id_registered)
{
CV_LOG_ITT(" Register ITT region: I=" << (void*)this << " " << ctx.threadID << "-" << global_region_id);
#if 1 // workaround for some ITT backends
itt_id = __itt_id_make((void*)(intptr_t)(((int64)(ctx.threadID + 1) << 32) | global_region_id), global_region_id);
#else
itt_id = __itt_id_make((void*)(intptr_t)(ctx.threadID + 1), global_region_id);
#endif
__itt_id_create(domain, itt_id);
itt_id_registered = true;
}
}
#else
CV_UNUSED(ctx);
#endif
}
void RegionStatisticsStatus::enableSkipMode(int depth)
{
CV_DbgAssert(_skipDepth < 0);
CV_LOG_SKIP(NULL, "SKIP-ENABLE: depth=" << depth);
_skipDepth = depth;
}
void RegionStatisticsStatus::checkResetSkipMode(int leaveDepth)
{
if (leaveDepth <= _skipDepth)
{
CV_LOG_SKIP(NULL, "SKIP-RESET: leaveDepth=" << leaveDepth << " skipDepth=" << _skipDepth);
_skipDepth = -1;
}
}
Region::Region(const LocationStaticStorage& location) :
pImpl(NULL),
implFlags(0)
{
// Checks:
// - global enable flag
// - parent region is disabled
// - children count threshold
// - region location
// - depth (opencv nested calls)
if (!TraceManager::isActivated())
{
CV_LOG("Trace is disabled. Bailout");
return;
}
TraceManagerThreadLocal& ctx = getTraceManager().tls.getRef();
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "Region(): " << (void*)this << ": " << location.name);
Region* parentRegion = ctx.stackTopRegion();
const Region::LocationStaticStorage* parentLocation = ctx.stackTopLocation();
if (location.flags & REGION_FLAG_REGION_NEXT)
{
if (parentRegion && parentRegion->pImpl)
{
CV_DbgAssert((parentRegion->pImpl->location.flags & REGION_FLAG_FUNCTION) == 0);
parentRegion->destroy(); parentRegion->implFlags = 0;
parentRegion = ctx.stackTopRegion();
parentLocation = ctx.stackTopLocation();
}
}
int parentChildren = 0;
if (parentRegion && parentRegion->pImpl)
{
if (parentLocation == NULL)
{
// parallel_for_body code path
parentChildren = CV_XADD(&parentRegion->pImpl->directChildrenCount, 1) + 1;
}
else
{
parentChildren = ++parentRegion->pImpl->directChildrenCount;
}
}
int64 beginTimestamp = getTimestampNS();
int currentDepth = ctx.getCurrentDepth() + 1;
switch (location.flags & REGION_FLAG_IMPL_MASK)
{
#ifdef HAVE_IPP
case REGION_FLAG_IMPL_IPP:
if (!ctx.stat_status.ignoreDepthImplIPP)
ctx.stat_status.ignoreDepthImplIPP = currentDepth;
break;
#endif
#ifdef HAVE_OPENCL
case REGION_FLAG_IMPL_OPENCL:
if (!ctx.stat_status.ignoreDepthImplOpenCL)
ctx.stat_status.ignoreDepthImplOpenCL = currentDepth;
break;
#endif
#ifdef HAVE_OPENVX
case REGION_FLAG_IMPL_OPENVX:
if (!ctx.stat_status.ignoreDepthImplOpenVX)
ctx.stat_status.ignoreDepthImplOpenVX = currentDepth;
break;
#endif
default:
break;
}
ctx.stackPush(this, &location, beginTimestamp);
implFlags |= REGION_FLAG__NEED_STACK_POP;
if ((location.flags & REGION_FLAG_REGION_FORCE) == 0)
{
if (ctx.stat_status._skipDepth >= 0 && currentDepth > ctx.stat_status._skipDepth)
{
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "Parent region is disabled. Bailout");
ctx.stat.currentSkippedRegions++;
return;
}
if (param_maxRegionChildrenOpenCV > 0 && (location.flags & REGION_FLAG_APP_CODE) == 0 && parentLocation && (parentLocation->flags & REGION_FLAG_APP_CODE) == 0)
{
if (parentChildren >= param_maxRegionChildrenOpenCV)
{
CV_LOG_TRACE_BAILOUT(NULL, _spaces(ctx.getCurrentDepth()*4) << "OpenCV parent region exceeds children count. Bailout");
ctx.stat_status.enableSkipMode(currentDepth - 1);
ctx.stat.currentSkippedRegions++;
DEBUG_ONLY(ctx.dumpStack(std::cout, false));
return;
}
}
if (param_maxRegionChildren > 0 && parentChildren >= param_maxRegionChildren)
{
CV_LOG_TRACE_BAILOUT(NULL, _spaces(ctx.getCurrentDepth()*4) << "Parent region exceeds children count. Bailout");
ctx.stat_status.enableSkipMode(currentDepth - 1);
ctx.stat.currentSkippedRegions++;
DEBUG_ONLY(ctx.dumpStack(std::cout, false));
return;
}
}
LocationExtraData::init(location);
if ((*location.ppExtra)->global_location_id == 0)
{
CV_LOG_TRACE_BAILOUT(NULL, _spaces(ctx.getCurrentDepth()*4) << "Region location is disabled. Bailout");
ctx.stat_status.enableSkipMode(currentDepth);
ctx.stat.currentSkippedRegions++;
return;
}
if (parentLocation && (parentLocation->flags & REGION_FLAG_SKIP_NESTED))
{
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "Parent region disables inner regions. Bailout");
ctx.stat_status.enableSkipMode(currentDepth);
ctx.stat.currentSkippedRegions++;
return;
}
if (param_maxRegionDepthOpenCV)
{
if ((location.flags & REGION_FLAG_APP_CODE) == 0)
{
if (ctx.regionDepthOpenCV >= param_maxRegionDepthOpenCV)
{
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "OpenCV region depth is exceed = " << ctx.regionDepthOpenCV << ". Bailout");
if (ctx.stat.currentSkippedRegions == 0)
{
DEBUG_ONLY(ctx.dumpStack(std::cout, false));
}
ctx.stat_status.enableSkipMode(currentDepth);
ctx.stat.currentSkippedRegions++;
return;
}
}
}
new Impl(ctx, parentRegion, *this, location, beginTimestamp);
CV_DbgAssert(pImpl != NULL);
implFlags |= REGION_FLAG__ACTIVE;
// parallel_for path
if (parentRegion && parentRegion->pImpl)
{
if (parentLocation == NULL)
{
pImpl->directChildrenCount = parentChildren;
}
}
}
void Region::destroy()
{
CV_DbgAssert(implFlags != 0);
TraceManagerThreadLocal& ctx = getTraceManager().tls.getRef();
CV_LOG(_spaces(ctx.getCurrentDepth()*4) << "Region::destruct(): " << (void*)this << " pImpl=" << pImpl << " implFlags=" << implFlags << ' ' << (ctx.stackTopLocation() ? ctx.stackTopLocation()->name : "<unknown>"));
CV_DbgAssert(implFlags & REGION_FLAG__NEED_STACK_POP);
const int currentDepth = ctx.getCurrentDepth(); CV_UNUSED(currentDepth);
CV_LOG_CTX_STAT(NULL, _spaces(currentDepth*4) << ctx.stat << ' ' << ctx.stat_status);
const Region::LocationStaticStorage* location = ctx.stackTopLocation();
Impl::OptimizationPath myCodePath = Impl::CODE_PATH_PLAIN;
if (location)
{
switch (location->flags & REGION_FLAG_IMPL_MASK)
{
#ifdef HAVE_IPP
case REGION_FLAG_IMPL_IPP:
myCodePath = Impl::CODE_PATH_IPP;
break;
#endif
#ifdef HAVE_OPENCL
case REGION_FLAG_IMPL_OPENCL:
if (param_synchronizeOpenCL && cv::ocl::isOpenCLActivated())
cv::ocl::finish();
myCodePath = Impl::CODE_PATH_OPENCL;
break;
#endif
#ifdef HAVE_OPENVX
case REGION_FLAG_IMPL_OPENVX:
myCodePath = Impl::CODE_PATH_OPENVX;
break;
#endif
default:
break;
}
}
int64 endTimestamp = getTimestampNS();
int64 duration = endTimestamp - ctx.stackTopBeginTimestamp();
bool active = isActive();
if (active)
ctx.stat.duration = duration;
else if (ctx.stack.size() == ctx.parallel_for_stack_size + 1)
ctx.stat.duration += duration;
switch (myCodePath) {
case Impl::CODE_PATH_PLAIN:
// nothing
break;
#ifdef HAVE_IPP
case Impl::CODE_PATH_IPP:
if (ctx.stat_status.ignoreDepthImplIPP == currentDepth)
{
ctx.stat.durationImplIPP += duration;
ctx.stat_status.ignoreDepthImplIPP = 0;
}
else if (active)
{
ctx.stat.durationImplIPP = duration;
}
break;
#endif
#ifdef HAVE_OPENCL
case Impl::CODE_PATH_OPENCL:
if (ctx.stat_status.ignoreDepthImplOpenCL == currentDepth)
{
ctx.stat.durationImplOpenCL += duration;
ctx.stat_status.ignoreDepthImplOpenCL = 0;
}
else if (active)
{
ctx.stat.durationImplOpenCL = duration;
}
break;
#endif
#ifdef HAVE_OPENVX
case Impl::CODE_PATH_OPENVX:
if (ctx.stat_status.ignoreDepthImplOpenVX == currentDepth)
{
ctx.stat.durationImplOpenVX += duration;
ctx.stat_status.ignoreDepthImplOpenVX = 0;
}
else if (active)
{
ctx.stat.durationImplOpenVX = duration;
}
break;
#endif
default:
break;
}
if (pImpl)
{
CV_DbgAssert((implFlags & (REGION_FLAG__ACTIVE | REGION_FLAG__NEED_STACK_POP)) == (REGION_FLAG__ACTIVE | REGION_FLAG__NEED_STACK_POP));
CV_DbgAssert(ctx.stackTopRegion() == this);
pImpl->endTimestamp = endTimestamp;
pImpl->leaveRegion(ctx);
pImpl->release();
pImpl = NULL;
DEBUG_ONLY(implFlags &= ~REGION_FLAG__ACTIVE);
}
else
{
CV_DbgAssert(ctx.stat_status._skipDepth <= currentDepth);
}
if (implFlags & REGION_FLAG__NEED_STACK_POP)
{
CV_DbgAssert(ctx.stackTopRegion() == this);
ctx.stackPop();
ctx.stat_status.checkResetSkipMode(currentDepth);
DEBUG_ONLY(implFlags &= ~REGION_FLAG__NEED_STACK_POP);
}
CV_LOG_CTX_STAT(NULL, _spaces(currentDepth*4) << "===> " << ctx.stat << ' ' << ctx.stat_status);
}
TraceManagerThreadLocal::~TraceManagerThreadLocal()
{
}
void TraceManagerThreadLocal::dumpStack(std::ostream& out, bool onlyFunctions) const
{
std::stringstream ss;
std::deque<StackEntry>::const_iterator it = stack.begin();
std::deque<StackEntry>::const_iterator end = stack.end();
int depth = 0;
for (; it != end; ++it)
{
const Region::LocationStaticStorage* location = it->location;
if (location)
{
if (!onlyFunctions || (location->flags & REGION_FLAG_FUNCTION))
{
ss << _spaces(4*depth) << location->name << std::endl;
depth++;
}
}
else
{
ss << _spaces(4*depth) << "<unknown>" << std::endl;
depth++;
}
}
out << ss.str();
}
class AsyncTraceStorage CV_FINAL : public TraceStorage
{
mutable std::ofstream out;
public:
const std::string name;
AsyncTraceStorage(const std::string& filename) :
out(filename.c_str(), std::ios::trunc),
name(filename)
{
out << "#description: OpenCV trace file" << std::endl;
out << "#version: 1.0" << std::endl;
}
~AsyncTraceStorage()
{
out.close();
}
bool put(const TraceMessage& msg) const CV_OVERRIDE
{
if (msg.hasError)
return false;
out << msg.buffer;
//DEBUG_ONLY(std::flush(out)); // TODO configure flag
return true;
}
};
class SyncTraceStorage CV_FINAL : public TraceStorage
{
mutable std::ofstream out;
mutable cv::Mutex mutex;
public:
const std::string name;
SyncTraceStorage(const std::string& filename) :
out(filename.c_str(), std::ios::trunc),
name(filename)
{
out << "#description: OpenCV trace file" << std::endl;
out << "#version: 1.0" << std::endl;
}
~SyncTraceStorage()
{
cv::AutoLock l(mutex);
out.close();
}
bool put(const TraceMessage& msg) const CV_OVERRIDE
{
if (msg.hasError)
return false;
{
cv::AutoLock l(mutex);
out << msg.buffer;
std::flush(out); // TODO configure flag
}
return true;
}
};
TraceStorage* TraceManagerThreadLocal::getStorage() const
{
// TODO configuration option for stdout/single trace file
if (storage.empty())
{
TraceStorage* global = getTraceManager().trace_storage.get();
if (global)
{
const std::string filepath = cv::format("%s-%03d.txt", getParameterTraceLocation().c_str(), threadID).c_str();
TraceMessage msg;
const char* pos = strrchr(filepath.c_str(), '/'); // extract filename
#ifdef _WIN32
if (!pos)
pos = strrchr(filepath.c_str(), '\\');
#endif
if (!pos)
pos = filepath.c_str();
else
pos += 1; // fix to skip extra slash in filename beginning
msg.printf("#thread file: %s\n", pos);
global->put(msg);
storage.reset(new AsyncTraceStorage(filepath));
}
}
return storage.get();
}
static bool activated = false;
static bool isInitialized = false;
TraceManager::TraceManager()
{
(void)cv::getTimestampNS();
isInitialized = true;
CV_LOG("TraceManager ctor: " << (void*)this);
CV_LOG("TraceManager configure()");
activated = getParameterTraceEnable();
if (activated)
trace_storage.reset(new SyncTraceStorage(std::string(getParameterTraceLocation()) + ".txt"));
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
activated = true; // force trace pipeline activation (without OpenCV storage)
__itt_region_begin(domain, __itt_null, __itt_null, __itt_string_handle_create("OpenCVTrace"));
}
#endif
}
TraceManager::~TraceManager()
{
CV_LOG("TraceManager dtor: " << (void*)this);
#ifdef OPENCV_WITH_ITT
if (isITTEnabled())
{
__itt_region_end(domain, __itt_null);
}
#endif
std::vector<TraceManagerThreadLocal*> threads_ctx;
tls.gather(threads_ctx);
size_t totalEvents = 0, totalSkippedEvents = 0;
for (size_t i = 0; i < threads_ctx.size(); i++)
{
TraceManagerThreadLocal* ctx = threads_ctx[i];
if (ctx)
{
totalEvents += ctx->region_counter;
totalSkippedEvents += ctx->totalSkippedEvents;
}
}
if (totalEvents || activated)
{
CV_LOG_INFO(NULL, "Trace: Total events: " << totalEvents);
}
if (totalSkippedEvents)
{
CV_LOG_WARNING(NULL, "Trace: Total skipped events: " << totalSkippedEvents);
}
// This is a global static object, so process starts shutdown here
// Turn off trace
cv::__termination = true; // also set in DllMain() notifications handler for DLL_PROCESS_DETACH
activated = false;
}
bool TraceManager::isActivated()
{
// Check if process starts shutdown, and set earlyExit to true
// to prevent further instrumentation processing earlier.
if (cv::__termination)
{
activated = false;
return false;
}
if (!isInitialized)
{
TraceManager& m = getTraceManager();
CV_UNUSED(m); // TODO
}
return activated;
}
static TraceManager* getTraceManagerCallOnce()
{
static TraceManager globalInstance;
return &globalInstance;
}
TraceManager& getTraceManager()
{
CV_SINGLETON_LAZY_INIT_REF(TraceManager, getTraceManagerCallOnce())
}
void parallelForSetRootRegion(const Region& rootRegion, const TraceManagerThreadLocal& root_ctx)
{
TraceManagerThreadLocal& ctx = getTraceManager().tls.getRef();
if (ctx.dummy_stack_top.region == &rootRegion) // already attached
return;
CV_Assert(ctx.dummy_stack_top.region == NULL);
ctx.dummy_stack_top = TraceManagerThreadLocal::StackEntry(const_cast<Region*>(&rootRegion), NULL, -1);
if (&ctx == &root_ctx)
{
ctx.stat.grab(ctx.parallel_for_stat);
ctx.parallel_for_stat_status = ctx.stat_status;
ctx.parallel_for_stack_size = ctx.stack.size();
return;
}
CV_Assert(ctx.stack.empty());
ctx.currentActiveRegion = const_cast<Region*>(&rootRegion);
ctx.regionDepth = root_ctx.regionDepth;
ctx.regionDepthOpenCV = root_ctx.regionDepthOpenCV;
ctx.parallel_for_stack_size = 0;
ctx.stat_status.propagateFrom(root_ctx.stat_status);
}
void parallelForAttachNestedRegion(const Region& rootRegion)
{
CV_UNUSED(rootRegion);
TraceManagerThreadLocal& ctx = getTraceManager().tls.getRef();
CV_DbgAssert(ctx.dummy_stack_top.region == &rootRegion);
Region* region = ctx.getCurrentActiveRegion();
CV_LOG_PARALLEL(NULL, " PARALLEL_FOR: " << (void*)region << " ==> " << &rootRegion);
if (!region)
return;
#ifdef OPENCV_WITH_ITT
if (!rootRegion.pImpl || !rootRegion.pImpl->itt_id_registered)
return;
if (!region->pImpl)
return;
CV_LOG_PARALLEL(NULL, " PARALLEL_FOR ITT: " << (void*)rootRegion.pImpl->itt_id.d1 << ":" << rootRegion.pImpl->itt_id.d2 << ":" << (void*)rootRegion.pImpl->itt_id.d3 << " => "
<< (void*)region->pImpl->itt_id.d1 << ":" << region->pImpl->itt_id.d2 << ":" << (void*)region->pImpl->itt_id.d3);
__itt_relation_add(domain, region->pImpl->itt_id, __itt_relation_is_child_of, rootRegion.pImpl->itt_id);
#endif
}
void parallelForFinalize(const Region& rootRegion)
{
TraceManagerThreadLocal& ctx = getTraceManager().tls.getRef();
int64 endTimestamp = getTimestampNS();
int64 duration = endTimestamp - ctx.stackTopBeginTimestamp();
CV_LOG_PARALLEL(NULL, "parallel_for duration: " << duration << " " << &rootRegion);
std::vector<TraceManagerThreadLocal*> threads_ctx;
getTraceManager().tls.gather(threads_ctx);
RegionStatistics parallel_for_stat;
for (size_t i = 0; i < threads_ctx.size(); i++)
{
TraceManagerThreadLocal* child_ctx = threads_ctx[i];
if (child_ctx && child_ctx->stackTopRegion() == &rootRegion)
{
CV_LOG_PARALLEL(NULL, "Thread=" << child_ctx->threadID << " " << child_ctx->stat);
RegionStatistics child_stat;
child_ctx->stat.grab(child_stat);
parallel_for_stat.append(child_stat);