gecko-dev/tools/profiler/shared-libraries.h

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4.2 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 SHARED_LIBRARIES_H_
#define SHARED_LIBRARIES_H_
#ifndef MOZ_ENABLE_PROFILER_SPS
#error This header does not have a useful implementation on your platform!
#endif
#include <algorithm>
#include <vector>
#include <string.h>
#include <stdlib.h>
#include <mozilla/StandardInteger.h>
#include <nsID.h>
class SharedLibrary {
public:
SharedLibrary(unsigned long aStart,
unsigned long aEnd,
unsigned long aOffset,
#ifdef XP_WIN
nsID aPdbSignature,
unsigned long aPdbAge,
const char *aPdbName,
#endif
const char *aName)
: mStart(aStart)
, mEnd(aEnd)
, mOffset(aOffset)
#ifdef XP_WIN
, mPdbSignature(aPdbSignature)
, mPdbAge(aPdbAge)
, mPdbName(strdup(aPdbName))
#endif
, mName(strdup(aName))
{}
SharedLibrary(const SharedLibrary& aEntry)
: mStart(aEntry.mStart)
, mEnd(aEntry.mEnd)
, mOffset(aEntry.mOffset)
#ifdef XP_WIN
, mPdbSignature(aEntry.mPdbSignature)
, mPdbAge(aEntry.mPdbAge)
, mPdbName(strdup(aEntry.mPdbName))
#endif
, mName(strdup(aEntry.mName))
{}
SharedLibrary& operator=(const SharedLibrary& aEntry)
{
// Gracefully handle self assignment
if (this == &aEntry) return *this;
mStart = aEntry.mStart;
mEnd = aEntry.mEnd;
mOffset = aEntry.mOffset;
#ifdef XP_WIN
mPdbSignature = aEntry.mPdbSignature;
mPdbAge = aEntry.mPdbAge;
if (mPdbName)
free(mPdbName);
mPdbName = strdup(aEntry.mPdbName);
#endif
if (mName)
free(mName);
mName = strdup(aEntry.mName);
return *this;
}
bool operator==(const SharedLibrary& other) const
{
bool equal = ((mStart == other.mStart) &&
(mEnd == other.mEnd) &&
(mOffset == other.mOffset) &&
(mName && other.mName && (strcmp(mName, other.mName) == 0)));
#ifdef XP_WIN
equal = equal &&
(mPdbSignature.Equals(other.mPdbSignature)) &&
(mPdbAge == other.mPdbAge) &&
(mPdbName && other.mPdbName && (strcmp(mPdbName, other.mPdbName) == 0));
#endif
return equal;
}
~SharedLibrary()
{
#ifdef XP_WIN
free(mPdbName);
mPdbName = NULL;
#endif
free(mName);
mName = NULL;
}
uintptr_t GetStart() const { return mStart; }
uintptr_t GetEnd() const { return mEnd; }
uintptr_t GetOffset() const { return mOffset; }
#ifdef XP_WIN
nsID GetPdbSignature() const { return mPdbSignature; }
uint32_t GetPdbAge() const { return mPdbAge; }
char* GetPdbName() const { return mPdbName; }
#endif
char* GetName() const { return mName; }
private:
explicit SharedLibrary() {}
uintptr_t mStart;
uintptr_t mEnd;
uintptr_t mOffset;
#ifdef XP_WIN
// Windows-specific PDB file identifiers
nsID mPdbSignature;
uint32_t mPdbAge;
char *mPdbName;
#endif
char *mName;
};
static bool
CompareAddresses(const SharedLibrary& first, const SharedLibrary& second)
{
return first.GetStart() < second.GetStart();
}
class SharedLibraryInfo {
public:
static SharedLibraryInfo GetInfoForSelf();
SharedLibraryInfo() {}
void AddSharedLibrary(SharedLibrary entry)
{
mEntries.push_back(entry);
}
const SharedLibrary& GetEntry(size_t i) const
{
return mEntries[i];
}
// Removes items in the range [first, last)
// i.e. element at the "last" index is not removed
void RemoveEntries(size_t first, size_t last)
{
mEntries.erase(mEntries.begin() + first, mEntries.begin() + last);
}
bool Contains(const SharedLibrary& searchItem) const
{
return (mEntries.end() !=
std::find(mEntries.begin(), mEntries.end(), searchItem));
}
size_t GetSize() const
{
return mEntries.size();
}
void SortByAddress()
{
std::sort(mEntries.begin(), mEntries.end(), CompareAddresses);
}
void Clear()
{
mEntries.clear();
}
private:
std::vector<SharedLibrary> mEntries;
};
#endif