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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef ProcessedStack_h__
#define ProcessedStack_h__
#include <string>
#include <vector>
namespace mozilla {
namespace Telemetry {
// This class represents a stack trace and the modules referenced in that trace.
// It is designed to be easy to read and write to disk or network and doesn't
// include any logic on how to collect or read the information it stores.
class ProcessedStack
{
public:
ProcessedStack();
size_t GetStackSize() const;
size_t GetNumModules() const;
struct Frame
{
// The offset of this program counter in its module or an absolute pc.
uintptr_t mOffset;
// The index to pass to GetModule to get the module this program counter
// was in.
uint16_t mModIndex;
};
struct Module
{
// The file name, /foo/bar/libxul.so for example.
std::string mName;
std::string mBreakpadId;
bool operator==(const Module& other) const;
};
const Frame &GetFrame(unsigned aIndex) const;
void AddFrame(const Frame& aFrame);
const Module &GetModule(unsigned aIndex) const;
void AddModule(const Module& aFrame);
void Clear();
private:
std::vector<Module> mModules;
std::vector<Frame> mStack;
};
// Get the current list of loaded modules, filter and pair it to the provided
// stack. We let the caller collect the stack since different callers have
// different needs (current thread X main thread, stopping the thread, etc).
ProcessedStack
GetStackAndModules(const std::vector<uintptr_t> &aPCs);
} // namespace Telemetry
} // namespace mozilla
#endif // ProcessedStack_h__
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