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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#pragma once
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#include <Common/PipeFDs.h>
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#include <Common/ProfileEvents.h>
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#include <base/types.h>
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class StackTrace;
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namespace DB
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{
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class TraceCollector;
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enum class TraceType : uint8_t
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{
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Real,
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CPU,
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Memory,
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MemorySample,
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MemoryPeak,
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ProfileEvent,
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};
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/// This is the second part of TraceCollector, that sends stacktrace to the pipe.
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/// It has been split out to avoid dependency from interpreters part.
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class TraceSender
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{
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public:
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struct Extras
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{
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/// size - for memory tracing is the amount of memory allocated; for other trace types it is 0.
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Int64 size{};
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/// Event type and increment for 'ProfileEvent' trace type; for other trace types defaults.
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ProfileEvents::Event event{ProfileEvents::end()};
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ProfileEvents::Count increment{};
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};
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/// Collect a stack trace. This method is signal safe.
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/// Precondition: the TraceCollector object must be created.
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static void send(TraceType trace_type, const StackTrace & stack_trace, Extras extras);
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private:
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friend class TraceCollector;
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static LazyPipeFDs pipe;
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};
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}
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