mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-19 21:03:51 +00:00
b4339f266d
* Fix shared build * Major default libs refactor * Fix build with gcc_eh * Link all libraries as a big group. * Use global interface library as a group * Build capnproto using our cmake * Use only internal libunwind
78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
#pragma once
|
|
|
|
#include <Core/Types.h>
|
|
#include <Common/config.h>
|
|
#include <common/config_common.h>
|
|
#include <signal.h>
|
|
#include <time.h>
|
|
|
|
|
|
namespace Poco
|
|
{
|
|
class Logger;
|
|
}
|
|
|
|
namespace DB
|
|
{
|
|
|
|
enum class TimerType : UInt8
|
|
{
|
|
Real,
|
|
Cpu,
|
|
};
|
|
|
|
/**
|
|
* Query profiler implementation for selected thread.
|
|
*
|
|
* This class installs timer and signal handler on creation to:
|
|
* 1. periodically pause given thread
|
|
* 2. collect thread's current stack trace
|
|
* 3. write collected stack trace to trace_pipe for TraceCollector
|
|
*
|
|
* Desctructor tries to unset timer and restore previous signal handler.
|
|
* Note that signal handler implementation is defined by template parameter. See QueryProfilerReal and QueryProfilerCpu.
|
|
*/
|
|
template <typename ProfilerImpl>
|
|
class QueryProfilerBase
|
|
{
|
|
public:
|
|
QueryProfilerBase(const Int32 thread_id, const int clock_type, UInt32 period, const int pause_signal_);
|
|
~QueryProfilerBase();
|
|
|
|
private:
|
|
void tryCleanup();
|
|
|
|
Poco::Logger * log;
|
|
|
|
#if USE_UNWIND
|
|
/// Timer id from timer_create(2)
|
|
timer_t timer_id = nullptr;
|
|
#endif
|
|
|
|
/// Pause signal to interrupt threads to get traces
|
|
int pause_signal;
|
|
|
|
/// Previous signal handler to restore after query profiler exits
|
|
struct sigaction * previous_handler = nullptr;
|
|
};
|
|
|
|
/// Query profiler with timer based on real clock
|
|
class QueryProfilerReal : public QueryProfilerBase<QueryProfilerReal>
|
|
{
|
|
public:
|
|
QueryProfilerReal(const Int32 thread_id, const UInt32 period);
|
|
|
|
static void signalHandler(int sig, siginfo_t * info, void * context);
|
|
};
|
|
|
|
/// Query profiler with timer based on CPU clock
|
|
class QueryProfilerCpu : public QueryProfilerBase<QueryProfilerCpu>
|
|
{
|
|
public:
|
|
QueryProfilerCpu(const Int32 thread_id, const UInt32 period);
|
|
|
|
static void signalHandler(int sig, siginfo_t * info, void * context);
|
|
};
|
|
|
|
}
|