Revert "Revert "Add BacktraceOffline for offline backtracing."" (0a411c93) · Commits · e / os / android_system_core

debuggerd/Android.mk

+1 −0

Original line number	Diff line number	Diff line
		@@ -99,6 +99,7 @@ debuggerd_c_includes := \
		debuggerd_cpp_flags := \
		$(common_cppflags) \
		-Wno-missing-field-initializers \
		-fno-rtti \

		# Only build the host tests on linux.
		ifeq ($(HOST_OS),linux)

include/backtrace/Backtrace.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,12 @@ struct ucontext;
		typedef ucontext ucontext_t;
		#endif

		struct backtrace_stackinfo_t {
		uint64_t start;
		uint64_t end;
		const uint8_t* data;
		};

		class Backtrace {
		public:
		// Create the correct Backtrace object based on what is to be unwound.
		@@ -66,6 +72,14 @@ public:
		// If map is not NULL, the map is still owned by the caller.
		static Backtrace* Create(pid_t pid, pid_t tid, BacktraceMap* map = NULL);

		// Create an offline Backtrace object that can be used to do an unwind without a process
		// that is still running. If cache_file is set to true, then elf information will be cached
		// for this call. The cached information survives until the calling process ends. This means
		// that subsequent calls to create offline Backtrace objects will continue to use the same
		// cache. It also assumes that the elf files used for each offline unwind are the same.
		static Backtrace* CreateOffline(pid_t pid, pid_t tid, BacktraceMap* map,
		const backtrace_stackinfo_t& stack, bool cache_file = false);

		virtual ~Backtrace();

		// Get the current stack trace and store in the backtrace_ structure.

include/backtrace/BacktraceMap.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@

		#include <deque>
		#include <string>
		#include <vector>

		struct backtrace_map_t {
		uintptr_t start = 0;
		@@ -48,6 +49,8 @@ public:
		// is unsupported.
		static BacktraceMap* Create(pid_t pid, bool uncached = false);

		static BacktraceMap* Create(pid_t pid, const std::vector<backtrace_map_t>& maps);

		virtual ~BacktraceMap();

		// Fill in the map data structure for the given address.

libbacktrace/Android.build.mk

+4 −0

Original line number	Diff line number	Diff line
		@@ -69,7 +69,10 @@ LOCAL_LDLIBS := \
		$($(module)_ldlibs) \
		$($(module)_ldlibs_$(build_type)) \

		LOCAL_STRIP_MODULE := $($(module)_strip_module)

		ifeq ($(build_type),target)
		include $(LLVM_DEVICE_BUILD_MK)
		include $(BUILD_$(build_target))
		endif

		@@ -77,6 +80,7 @@ ifeq ($(build_type),host)
		# Only build if host builds are supported.
		ifeq ($(build_host),true)
		LOCAL_CFLAGS += -Wno-extern-c-compat -fno-omit-frame-pointer
		include $(LLVM_HOST_BUILD_MK)
		include $(BUILD_HOST_$(build_target))
		endif
		endif

libbacktrace/Android.mk

+25 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ libbacktrace_common_conlyflags := \

		libbacktrace_common_cppflags := \
		-std=gnu++11 \
		-I external/libunwind/include/tdep \

		# The latest clang (r230699) does not allow SP/PC to be declared in inline asm lists.
		libbacktrace_common_clang_cflags += \
		@@ -37,6 +38,9 @@ build_host := true
		endif
		endif

		LLVM_ROOT_PATH := external/llvm
		include $(LLVM_ROOT_PATH)/llvm.mk

		#-------------------------------------------------------------------------
		# The libbacktrace library.
		#-------------------------------------------------------------------------
		@@ -44,6 +48,7 @@ libbacktrace_src_files := \
		Backtrace.cpp \
		BacktraceCurrent.cpp \
		BacktraceMap.cpp \
		BacktraceOffline.cpp \
		BacktracePtrace.cpp \
		thread_utils.c \
		ThreadEntry.cpp \
		@@ -56,6 +61,20 @@ libbacktrace_shared_libraries := \
		liblog \
		libunwind \

		# Use shared llvm library on device to save space.
		libbacktrace_shared_libraries_target := \
		libLLVM \

		# Use static llvm libraries on host to remove dependency on 32-bit llvm shared library
		# which is not included in the prebuilt.
		libbacktrace_static_libraries_host := \
		libLLVMObject \
		libLLVMBitReader \
		libLLVMMC \
		libLLVMMCParser \
		libLLVMCore \
		libLLVMSupport \

		libbacktrace_ldlibs_host := \
		-lpthread \
		-lrt \
		@@ -86,6 +105,8 @@ libbacktrace_test_cflags := \
		libbacktrace_test_src_files := \
		backtrace_testlib.c \

		libbacktrace_test_strip_module := false

		module := libbacktrace_test
		module_tag := debug
		build_type := target
		@@ -107,6 +128,7 @@ backtrace_test_cflags_target := \
		-DENABLE_PSS_TESTS \

		backtrace_test_src_files := \
		backtrace_offline_test.cpp \
		backtrace_test.cpp \
		GetPss.cpp \
		thread_utils.c \
		@@ -120,6 +142,7 @@ backtrace_test_shared_libraries := \
		libbacktrace \
		libbase \
		libcutils \
		libunwind \

		backtrace_test_shared_libraries_target += \
		libdl \
		@@ -127,6 +150,8 @@ backtrace_test_shared_libraries_target += \
		backtrace_test_ldlibs_host += \
		-ldl \

		backtrace_test_strip_module := false

		module := backtrace_test
		module_tag := debug
		build_type := target