Function LoadBuildEvents

src/BuildEvents.cpp:631–696

}

bool LoadBuildEvents(const std::string& fileName, BuildEvents& outEvents, BuildNames& outNames)
{
    FILE* f = fopen(fileName.c_str(), "rb");
    if (f == nullptr)
    {
        printf("%sERROR: failed to open file '%s'%s\n", col::kRed, fileName.c_str(), col::kReset);
        return false;
    }

    BufferedReader r(f);
    if (r.bufferSize < 12) // 4 bytes magic header, 8 bytes hash at end
    {
        printf("%sERROR: corrupt input file '%s' (size too small)%s\n", col::kRed, fileName.c_str(), col::kReset);
        return false;
    }
    // check header magic
    int32_t magic = 0;
    r.Read(magic);
    if (magic != kFileMagic)
    {
        printf("%sERROR: unknown format of input file '%s'%s\n", col::kRed, fileName.c_str(), col::kReset);
        return false;
    }
    // chech hash checksum
    XXH64_hash_t hash = XXH64(r.buffer, r.bufferSize-sizeof(XXH64_hash_t), 0);
    if (memcmp(&hash, r.buffer+r.bufferSize-sizeof(XXH64_hash_t), sizeof(XXH64_hash_t)) != 0)
    {
        printf("%sERROR: corrupt input file '%s' (checksum mismatch)%s\n", col::kRed, fileName.c_str(), col::kReset);
        return false;
    }

    int64_t eventsCount = 0;
    r.Read(eventsCount);
    outEvents.resize(eventsCount);
    for(auto& e : outEvents)
    {
        int32_t eType;
        r.Read(eType);
        e.type = (BuildEventType)eType;
        r.Read(e.ts);
        r.Read(e.dur);
        r.Read(e.detailIndex.idx);
        r.Read(e.parent.idx);
        int64_t childCount = 0;
        r.Read(childCount);
        e.children.resize(childCount);
        if (childCount != 0)
            r.Read(&e.children[0], childCount * sizeof(e.children[0]));
    }

    int64_t namesCount = 0;
    r.Read(namesCount);
    outNames.resize(namesCount);
    for(auto& n : outNames)
    {
        uint32_t nSize = 0;
        r.Read(nSize);
        char* ptr = (char*)ArenaAllocate(nSize+1);