clang插件对llvm源码插桩，分析函数调用日志(2)--google镜像

news2024/12/24 2:20:44

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clang插件对llvm源码插桩，分析函数调用日志(1)

分析

进出、链、出

df进出=df[  df['tickKind'].isin( [FuncEnter,FuncReturn] )  ]


#代码中，只有在函数进入时，计算了链条长度 并写磁盘
df入=df[  df['tickKind'].isin( [FuncEnter] )  ]
df链=df入

# 函数本地时长 应 用  出时的计数器的值 
df出=df[  df['tickKind'].isin( [FuncReturn] )  ]

从funcEnterId查funcId的字典

fei2fi = df链.set_index('funcEnterId')['funcId'].to_dict()
type(fei2fi), list(fei2fi.items())[0:10]

(dict,
 [(0, 725),
  (1, 576),
  (2, 355),
  (3, 2237),
  (4, 165),
  (5, 355),
  (6, 2237),
  (7, 165),
  (8, 355),
  (9, 2237)])

fei2fn = df链.set_index('funcEnterId')['funcName'].to_dict()
type(fei2fn), list(fei2fn.items())[0:10]

(dict,
 [(0, 'llvm::cl::getGeneralCategory'),
  (1, 'llvm::cl::OptionCategory::registerCategory'),
  (2, 'llvm::ManagedStaticBase::RegisterManagedStatic'),
  (3, 'llvm::llvm_is_multithreaded'),
  (4, 'getManagedStaticMutex'),
  (5, 'llvm::ManagedStaticBase::RegisterManagedStatic'),
  (6, 'llvm::llvm_is_multithreaded'),
  (7, 'getManagedStaticMutex'),
  (8, 'llvm::ManagedStaticBase::RegisterManagedStatic'),
  (9, 'llvm::llvm_is_multithreaded')])

构造字段funcIdSeq

#利用字典fei2fi ，将输入 funcEnterIdSeqK 转为 funcIdSeqK
def funcEnterIdSeq2funcIdSeq(funcEnterIdSeqK:str):    
    fis=[]
    fiK=None
    for feiK_str in funcEnterIdSeqK.split("#"):
        if feiK_str == '': 
            continue
        
        feiK=int(feiK_str) # feiK 必须是数字格式，如果不是 正好报错
        
        fiK=fei2fi[feiK] # feiK 必须在字典fei2fi中，如果不在 正好报错
        
        fis.append(fiK)
    
    fiKStr_ls=  [ f'{fiK}' for fiK in fis]
    
    return '#'.join(fiKStr_ls)

#利用字典fei2fn ，将输入 funcEnterIdSeqK 转为 funcNameSeqK
def funcEnterIdSeq2funcNameSeq(funcEnterIdSeqK:str):    
    fns=[]
    fnK=None
    for feiK_str in funcEnterIdSeqK.split("#"):
        if feiK_str == '': 
            continue
        
        feiK=int(feiK_str) # feiK 必须是数字格式，如果不是 正好报错
        
        fnK=fei2fn[feiK] # feiK 必须在字典fei2fi中，如果不在 正好报错
        
        fns.append(fnK)
    
    
    return '#'.join(fns)

#测试函数funcEnterIdSeq2funcIdSeq
# funcEnterIdSeqK="#3#2#1#"
# funcEnterIdSeq2funcIdSeq(funcEnterIdSeqK),funcEnterIdSeq2funcNameSeq(funcEnterIdSeqK)

df进出['funcIdSeq']=df进出['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcIdSeq(feisJ) )

df入['funcIdSeq']=df入['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcIdSeq(feisJ) )
df链=df入

df出['funcIdSeq']=df出['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcIdSeq(feisJ) )

df进出['funcNameSeq']=df进出['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcNameSeq(feisJ) )

df入['funcNameSeq']=df入['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcNameSeq(feisJ) )
df链=df入

df出['funcNameSeq']=df出['funcEnterIdSeq'] .apply(lambda feisJ:  funcEnterIdSeq2funcNameSeq(feisJ) )

查看

df进出.shape,  df链.shape,  df出.shape
#((666718, 26), (333359, 26), (333359, 26))

df进出.head(5)

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查看2

函数本地时长分组 = df出.groupby('funcLocalClock').size().reset_index(name='该时长的出数')

函数本地时长分组_降序 = 函数本地时长分组.sort_values(by='该时长的出数', ascending=False)
函数本地时长分组_降序.head(5)

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3.4B 时长边界_时上链异数

 df时=df出

时顶=df出['funcLocalClock'].max()
时底=df出['funcLocalClock'].min()
print("时顶,时底", 时顶,时底)

时长边界_时上链异数_对们=[]
for 时长边界k in range(时底,时顶):
    时上函=df时[ df时['funcLocalClock'].ge(时长边界k)  ] .funcId.unique()
    时上链=df链[ df链['funcId'].isin( 时上函 ) ]
    时上链异数=len(时上链.funcIdSeq.unique())  #funcEnterIdSeq 改为 funcIdSeq
    时长边界_时上链异数_对们.append( (时长边界k,时上链异数)  )
    if 时上链异数 <=1:
        break
    if 时长边界k % 800 == 0:
        print(f"时长边界k,时上链异数 :{时长边界k},{时上链异数}")

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3.4 计算本地时长短的函数id们

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长短函数调用链列表

['llvm::StringMapImpl::RehashTable',
 '',
 'llvm::StringMapImpl::RehashTable#llvm::PassRegistry::registerPass#LLVMInitializeX86Target',
 'llvm::StringMapImpl::RehashTable#llvm::PassRegistry::registerPass#llvm::initializeGlobalISel#LLVMInitializeX86Target',
 'llvm::StringMapImpl::RehashTable#llvm::PassRegistry::registerPass#llvm::initializeLazyBPIPassPass#llvm::initializeGlobalISel#LLVMInitializeX86Target',
 'llvm::opt::OptTable::OptTable#clang::driver::getDriverOptTable#clang::driver::getDriverMode',
 'llvm::StringMapImpl::RehashTable#llvm::opt::OptTable::OptTable#clang::driver::getDriverOptTable#clang::driver::getDriverMode',
 'llvm::opt::OptTable::addValues#clang::driver::getDriverOptTable#clang::driver::getDriverMode',
 'llvm::StringMapImpl::RehashTable#clang::driver::Driver::getToolChain#clang::driver::Driver::BuildCompilation',
 
#csdn blog 复制不了那么多行

'llvm::StringMapImpl::RehashTable#llvm::MCContext::createELFSectionImpl#llvm::MCContext::createELFRelSection#(anonymous namespace)::ELFWriter::createRelocationSection#(anonymous namespace)::ELFWriter::writeObject#llvm::MCAssembler::Finish#llvm::MCObjectStreamer::finishImpl#llvm::MCELFStreamer::finishImpl#llvm::MCStreamer::finish#llvm::AsmPrinter::doFinalization#llvm::FPPassManager::doFinalization#(anonymous namespace)::MPPassManager::runOnModule#(anonymous namespace)::EmitAssemblyHelper::RunCodegenPipeline#(anonymous namespace)::EmitAssemblyHelper::EmitAssembly#clang::EmitBackendOutput#clang::ParseAST#clang::ASTFrontendAction::ExecuteAction#clang::CodeGenAction::ExecuteAction#clang::FrontendAction::Execute#clang::CompilerInstance::ExecuteAction#cc1_main#ExecuteCC1Tool#llvm::CrashRecoveryContext::RunSafely#clang::driver::CC1Command::Execute#clang::driver::Compilation::ExecuteCommand#clang::driver::Compilation::ExecuteJobs#clang::driver::Driver::ExecuteCompilation',
 'llvm::StringMapImpl::RehashTable#llvm::MCContext::createELFSectionImpl#llvm::MCContext::getELFSection#llvm::MCContext::getELFSection#(anonymous namespace)::ELFWriter::computeSymbolTable#(anonymous namespace)::ELFWriter::writeObject#llvm::MCAssembler::Finish#llvm::MCObjectStreamer::finishImpl#llvm::MCELFStreamer::finishImpl#llvm::MCStreamer::finish#llvm::AsmPrinter::doFinalization#llvm::FPPassManager::doFinalization#(anonymous namespace)::MPPassManager::runOnModule#(anonymous namespace)::EmitAssemblyHelper::RunCodegenPipeline#(anonymous namespace)::EmitAssemblyHelper::EmitAssembly#clang::EmitBackendOutput#clang::ParseAST#clang::ASTFrontendAction::ExecuteAction#clang::CodeGenAction::ExecuteAction#clang::FrontendAction::Execute#clang::CompilerInstance::ExecuteAction#cc1_main#ExecuteCC1Tool#llvm::CrashRecoveryContext::RunSafely#clang::driver::CC1Command::Execute#clang::driver::Compilation::ExecuteCommand#clang::driver::Compilation::ExecuteJobs#clang::driver::Driver::ExecuteCompilation']

在这里插入图片描述