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#include "profiler.h"
#include "stackcollect.h"
#include <util/generic/algorithm.h>
#include <util/generic/singleton.h>
#include <util/generic/string.h>
#include <util/generic/vector.h>
#include <util/stream/str.h>
namespace NAllocProfiler {
namespace {
static TAllocationStackCollector& AllocationStackCollector()
{
return *Singleton<TAllocationStackCollector>();
}
int AllocationCallback(int tag, size_t size, int sizeIdx)
{
Y_UNUSED(sizeIdx);
static const size_t STACK_FRAMES_COUNT = 32;
static const size_t STACK_FRAMES_SKIP = 1;
void* frames[STACK_FRAMES_COUNT];
size_t frameCount = BackTrace(frames, Y_ARRAY_SIZE(frames));
if (frameCount <= STACK_FRAMES_SKIP) {
return -1;
}
void** stack = &frames[STACK_FRAMES_SKIP];
frameCount -= STACK_FRAMES_SKIP;
auto& collector = AllocationStackCollector();
return collector.Alloc(stack, frameCount, tag, size);
}
void DeallocationCallback(int stackId, int tag, size_t size, int sizeIdx)
{
Y_UNUSED(tag);
Y_UNUSED(sizeIdx);
auto& collector = AllocationStackCollector();
collector.Free(stackId, size);
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
bool StartAllocationSampling(bool profileAllThreads)
{
auto& collector = AllocationStackCollector();
collector.Clear();
NAllocDbg::SetProfileAllThreads(profileAllThreads);
NAllocDbg::SetAllocationCallback(AllocationCallback);
NAllocDbg::SetDeallocationCallback(DeallocationCallback);
NAllocDbg::SetAllocationSamplingEnabled(true);
return true;
}
bool StopAllocationSampling(IAllocationStatsDumper &out, int count)
{
NAllocDbg::SetAllocationCallback(nullptr);
NAllocDbg::SetDeallocationCallback(nullptr);
NAllocDbg::SetAllocationSamplingEnabled(false);
auto& collector = AllocationStackCollector();
collector.Dump(count, out);
return true;
}
bool StopAllocationSampling(IOutputStream& out, int count) {
TAllocationStatsDumper dumper(out);
return StopAllocationSampling(dumper, count);
}
} // namespace NProfiler
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