libgui中的BufferQueueProducer加入堆栈CallStack编译报错问题-大厂企业实战项目难题

用户81274828151202026-01-09 10:49

背景：

针对调试和分析某个模块的源码时候，经常需要对某个方法进行堆栈的打印，java相关的代码都没啥问题，大家都可以很正常的打印出来，但是一些native的模块就不是那么顺利了。

大家可能会说，马哥你不是介绍过native有CallStack可以搞定native层面的调用堆栈么？ 哈哈，确实CallStack是可以实现对c++代码堆栈的打印，不过这个只是对一般的c++代码可能没问题，真正在实际开发过程中还是会遇到很多问题，比如下面这个同学的堆栈打印问题：

总结一下这个同学的问题：

学员朋友想要在BufferQueueProducer.cpp中的queueBuffer中加入堆栈打印，看看整个调用链路

也按套路加入了如下代码：

cpp 复制代码 
#include <utils/CallStack.h> 
   android::CallStack cs("INTEL-MESA");
	cs.update();
	cs.log("INTEL-MESA");

而且对应的bp也引入了相关的库 但是编译的时候发现如下报错：

bash 复制代码 
[  1% 11/917] //frameworks/av/media/module/bqhelper:libstagefright_bufferqueue_helper link libstagefright_bufferqueue_helper.so
FAILED: out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper/android_vendor.34_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so
prebuilts/clang/host/linux-x86/clang-r487747c/bin/clang++ out/soong/.intermediates/bionic/libc/crtbegin_so/android_vendor.34_x86_64/crtbegin_so.o @out/soong/.intermediates/frameworks/av/media/module/bqhe
lper/libstagefright_bufferqueue_helper/android_vendor.34_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so.rsp out/soong/.intermediates/bionic/libc/crtend_so/android_vendor.34_x86_64/crtend_s
o.o -o out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper/android_vendor.34_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so -target x86_64-linux-
android29 -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5 -Wl,--fatal-warnings -Wl,--no-undefined-version -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_stripped.a -Wl,--exclude-libs
,libunwind_llvm.a -Wl,--exclude-libs,libunwind.a -fuse-ld=lld -Wl,--icf=safe -Wl,--pack-dyn-relocs=android+relr -Wl,--use-android-relr-tags -Wl,--no-undefined -Wl,--hash-style=gnu -m64 -nostdlib -Wl,--gc
-sections -shared -Wl,-soname,libstagefright_bufferqueue_helper.so -fsanitize=signed-integer-overflow,unsigned-integer-overflow -fno-sanitize-link-runtime -Wl,--exclude-libs=libclang_rt.builtins-x86_64-a
ndroid.a -Wl,--exclude-libs=libclang_rt.ubsan_minimal-x86_64-android.a 
ld.lld: error: undefined symbol: android::CallStack::CallStack(char const*, int)
>>> referenced by BufferQueueProducer.cpp:927 (frameworks/native/libs/gui/BufferQueueProducer.cpp:927)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::update(int, int)
>>> referenced by BufferQueueProducer.cpp:928 (frameworks/native/libs/gui/BufferQueueProducer.cpp:928)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::log(char const*, android_LogPriority, char const*) const
>>> referenced by BufferQueueProducer.cpp:929 (frameworks/native/libs/gui/BufferQueueProducer.cpp:929)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::~CallStack()
>>> referenced by BufferQueueProducer.cpp:930 (frameworks/native/libs/gui/BufferQueueProducer.cpp:930)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_64_static/libgui_bufferqueue_static.a
clang-17: error: linker command failed with exit code 1 (use -v to see invocation)
[  1% 12/917] //frameworks/av/media/module/bqhelper:libstagefright_bufferqueue_helper link libstagefright_bufferqueue_helper.so [x86]
FAILED: out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper/android_vendor.34_x86_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so
prebuilts/clang/host/linux-x86/clang-r487747c/bin/clang++ out/soong/.intermediates/bionic/libc/crtbegin_so/android_vendor.34_x86_x86_64/crtbegin_so.o @out/soong/.intermediates/frameworks/av/media/module/
bqhelper/libstagefright_bufferqueue_helper/android_vendor.34_x86_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so.rsp out/soong/.intermediates/bionic/libc/crtend_so/android_vendor.34_x86_x86
_64/crtend_so.o -o out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper/android_vendor.34_x86_x86_64_shared/unstripped/libstagefright_bufferqueue_helper.so -targ
et i686-linux-android29 -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5 -Wl,--fatal-warnings -Wl,--no-undefined-version -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_stripped.a -Wl,
--exclude-libs,libunwind_llvm.a -Wl,--exclude-libs,libunwind.a -fuse-ld=lld -Wl,--icf=safe -Wl,--pack-dyn-relocs=android+relr -Wl,--use-android-relr-tags -Wl,--no-undefined -Wl,--hash-style=gnu -m32 -nos
tdlib -Wl,--gc-sections -shared -Wl,-soname,libstagefright_bufferqueue_helper.so -fsanitize=signed-integer-overflow,unsigned-integer-overflow -fno-sanitize-link-runtime -Wl,--exclude-libs=libclang_rt.bui
ltins-i686-android.a -Wl,--exclude-libs=libclang_rt.ubsan_minimal-i686-android.a 
ld.lld: error: undefined symbol: android::CallStack::CallStack(char const*, int)
>>> referenced by BufferQueueProducer.cpp:927 (frameworks/native/libs/gui/BufferQueueProducer.cpp:927)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::update(int, int)
>>> referenced by BufferQueueProducer.cpp:928 (frameworks/native/libs/gui/BufferQueueProducer.cpp:928)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::log(char const*, android_LogPriority, char const*) const
>>> referenced by BufferQueueProducer.cpp:929 (frameworks/native/libs/gui/BufferQueueProducer.cpp:929)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_x86_64_static/libgui_bufferqueue_static.a

ld.lld: error: undefined symbol: android::CallStack::~CallStack()
>>> referenced by BufferQueueProducer.cpp:930 (frameworks/native/libs/gui/BufferQueueProducer.cpp:930)
>>>               BufferQueueProducer.o:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*)) in 
archive out/soong/.intermediates/frameworks/native/libs/gui/libgui_bufferqueue_static/android_vendor.34_x86_x86_64_static/libgui_bufferqueue_static.a
clang-17: error: linker command failed with exit code 1 (use -v to see invocation)
[  1% 15/917] //frameworks/av/media/module/bqhelper:libstagefright_bufferqueue_helper_novndk link libstagefright_bufferqueue_helper_novndk.so [apex31]
FAILED: out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper_novndk/android_x86_64_shared_cfi_apex31/unstripped/libstagefright_bufferqueue_helper_novndk.so
prebuilts/clang/host/linux-x86/clang-r487747c/bin/clang++ out/soong/.intermediates/bionic/libc/crtbegin_so/android_x86_64_apex31/crtbegin_so.o @out/soong/.intermediates/frameworks/av/media/module/bqhelpe
r/libstagefright_bufferqueue_helper_novndk/android_x86_64_shared_cfi_apex31/unstripped/libstagefright_bufferqueue_helper_novndk.so.rsp out/soong/.intermediates/bionic/libc/crtend_so/android_x86_64_apex31
/crtend_so.o -o out/soong/.intermediates/frameworks/av/media/module/bqhelper/libstagefright_bufferqueue_helper_novndk/android_x86_64_shared_cfi_apex31/unstripped/libstagefright_bufferqueue_helper_novndk.
so -target x86_64-linux-android29 -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5 -Wl,--fatal-warnings -Wl,--no-undefined-version -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_strip
ped.a -Wl,--exclude-libs,libunwind_llvm.a -Wl,--exclude-libs,libunwind.a -fuse-ld=lld -Wl,--icf=safe -Wl,--pack-dyn-relocs=android+relr -Wl,--use-android-relr-tags -Wl,--no-undefined -Wl,--hash-style=gnu
 -m64 -nostdlib -Wl,--gc-sections -shared -Wl,-soname,libstagefright_bufferqueue_helper_novndk.so -flto -fsanitize-cfi-cross-dso -fsanitize=cfi -Wl,-plugin-opt,O1 -fsanitize=signed-integer-overflow,unsig
ned-integer-overflow,cfi -fno-sanitize-link-runtime -Wl,--exclude-libs=libclang_rt.builtins-x86_64-android.a -Wl,--exclude-libs=libclang_rt.ubsan_minimal-x86_64-android.a 
ld.lld: error: undefined symbol: android::CallStack::CallStack(char const*, int)
>>> referenced by BufferQueueProducer.cpp:927 (frameworks/native/libs/gui/BufferQueueProducer.cpp:927)
>>>               lto.tmp:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*))

ld.lld: error: undefined symbol: android::CallStack::update(int, int)
>>> referenced by BufferQueueProducer.cpp:928 (frameworks/native/libs/gui/BufferQueueProducer.cpp:928)
>>>               lto.tmp:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*))

ld.lld: error: undefined symbol: android::CallStack::log(char const*, android_LogPriority, char const*) const
>>> referenced by BufferQueueProducer.cpp:929 (frameworks/native/libs/gui/BufferQueueProducer.cpp:929)
>>>               lto.tmp:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*))

ld.lld: error: undefined symbol: android::CallStack::~CallStack()
>>> referenced by BufferQueueProducer.cpp:930 (frameworks/native/libs/gui/BufferQueueProducer.cpp:930)
>>>               lto.tmp:(android::BufferQueueProducer::queueBuffer(int, android::IGraphicBufferProducer::QueueBufferInput const&, android::IGraphicBufferProducer::QueueBufferOutput*))
clang-17: error: linker command failed with exit code 1 (use -v to see invocation)
11:21:00 ninja failed with: exit status 1

大面积报ld.lld: error: undefined symbol: android::CallStack错误，明明已经引入了相关库， 一看到这些报其实大家可能都一脸懵，不知道为啥会有这种错误。。。。。

分析报错大概原因

仔细看看对应的报错 明显都不是编译libgui时候的报错，都是报错在编译

frameworks/av/media/module/bqhelper:libstagefright_bufferqueue_helper

等库的时候有问题，简单说就是这些库其实也对我们修改的BufferQueueProducer.cpp有依赖，从bp中也可以发现：

BufferQueueProducer.cpp是在libgui_bufferqueue_sources中 libgui_bufferqueue_sources由被2个地方使用

libgui_bufferqueue_static静态库 libgui的动态库 但是在libstagefright_bufferqueue_helper编译时候有依赖这个libgui_bufferqueue_static库

这个也就是为啥会报错的原因，那么清楚了原来libstagefright_bufferqueue_helper,libstagefright_bufferqueue_helper_novndk对这个有依赖，那么是否可以直接在这个bp加入 libutilscallstack呢？

尝试一下：

突然发现又报错如下：

bash 复制代码 
Consider adding "com.android.media.swcodec" to 'apex_available' property of "liblzma"
error: frameworks/av/apex/Android.bp:248:1: module "com.android.media.swcodec" variant "android_common_cfi_com.android.media.swcodec_image": "liblzma" requires "liblzma" that doesn't list the APEX under 
'apex_available'.

Dependency path:
           via tag apex.dependencyTag{"executable"}
    -> mediaswcodec{os:android,image:,arch:x86_64,sdk:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libmedia_codecserviceregistrant{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libcodec2_hidl@1.1{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:true explicitlyVersioned:false dataLib:false ndk:false staticUnwin
der:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libcodec2_hidl@1.0{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libstagefright_bufferqueue_helper_novndk{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libutilscallstack{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> libunwindstack{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.libraryDependencyTag: { Kind:sharedLibraryDependency Order:normalLibraryDependency wholeStatic:false reexportFlags:false explicitlyVersioned:false dataLib:false ndk:false staticUnwi
nder:false makeSuffix: skipApexAllowedDependenciesCheck:false excludeInApex:false unexportedSymbols:false}
    -> liblzma{os:android,image:,arch:x86_64,sdk:,link:shared,version:,apex:apex31}
           via tag cc.dependencyTag: { name:reuse objects}
    -> liblzma{os:android,image:,arch:x86_64,sdk:,link:static,afdo:,lto:,apex:apex31}

Consider adding "com.android.media.swcodec" to 'apex_available' property of "liblzma"

error: frameworks/av/apex/Android.bp:248:1: module "com.android.media.swcodec" variant "android_common_cfi_com.android.media.swcodec_image": "libunwindstack" requires "liblzma" that doesn't list the APEX under 'apex_available'.

有点感觉进入了无底洞，涉及的依赖有点多，要把"libunwindstack" requires "liblzma" 也加入相关的apex_available，对这块不是那么深入了解，所以也不敢在继续改了

问题如何解决思路：

因为上面有编译报错，所以对queueBuffer的堆栈打印暂时没有成功

1、继续按照编译提示正面进行修改解决，这个可能需要更加深入系统这些库依赖关系等，感觉影响波及较大，这里如果有网友知道正面修改如何解决的请留言联系哈

2、是否可以考虑其他方法可以实现对这个queueBuffer的堆栈打印呢？ 比如我们产生anr时候有对应的trace文件，trace文件里面既可以有详细的堆栈CallStack，那么是否可以考虑从这个角度修改呢？

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