Merge "Add BacktraceOffline for offline backtracing." (ee645af4) · Commits · e / os / android_system_core

include/backtrace/Backtrace.h

+14 −0

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

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

	class Backtrace {		class Backtrace {
	public:		public:
	// Create the correct Backtrace object based on what is to be unwound.		// 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.		// 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);		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();		virtual ~Backtrace();

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

include/backtrace/BacktraceMap.h

+3 −0

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

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

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

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

	virtual ~BacktraceMap();		virtual ~BacktraceMap();

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

libbacktrace/Android.build.mk

+12 −0

Original line number	Original line	Diff line number	Diff line
	@@ -69,7 +69,14 @@ LOCAL_LDLIBS := \
	$($(module)_ldlibs) \		$($(module)_ldlibs) \
	$($(module)_ldlibs_$(build_type)) \		$($(module)_ldlibs_$(build_type)) \

			LOCAL_STRIP_MODULE := $($(module)_strip_module)

	ifeq ($(build_type),target)		ifeq ($(build_type),target)
			ifneq (,$(filter $(LOCAL_SHARED_LIBRARIES),libLLVM))
			LLVM_ROOT_PATH := external/llvm
			include $(LLVM_ROOT_PATH)/llvm.mk
			include $(LLVM_DEVICE_BUILD_MK)
			endif
	include $(BUILD_$(build_target))		include $(BUILD_$(build_target))
	endif		endif

	@@ -77,6 +84,11 @@ ifeq ($(build_type),host)
	# Only build if host builds are supported.		# Only build if host builds are supported.
	ifeq ($(build_host),true)		ifeq ($(build_host),true)
	LOCAL_CFLAGS += -Wno-extern-c-compat -fno-omit-frame-pointer		LOCAL_CFLAGS += -Wno-extern-c-compat -fno-omit-frame-pointer
			ifneq (,$(filter $(LOCAL_SHARED_LIBRARIES),libLLVM))
			LLVM_ROOT_PATH := external/llvm
			include $(LLVM_ROOT_PATH)/llvm.mk
			include $(LLVM_HOST_BUILD_MK)
			endif
	include $(BUILD_HOST_$(build_target))		include $(BUILD_HOST_$(build_target))
	endif		endif
	endif		endif

libbacktrace/Android.mk

+10 −0

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

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

	# The latest clang (r230699) does not allow SP/PC to be declared in inline asm lists.		# The latest clang (r230699) does not allow SP/PC to be declared in inline asm lists.
	libbacktrace_common_clang_cflags += \		libbacktrace_common_clang_cflags += \
	@@ -44,6 +45,7 @@ libbacktrace_src_files := \
	Backtrace.cpp \		Backtrace.cpp \
	BacktraceCurrent.cpp \		BacktraceCurrent.cpp \
	BacktraceMap.cpp \		BacktraceMap.cpp \
			BacktraceOffline.cpp \
	BacktracePtrace.cpp \		BacktracePtrace.cpp \
	thread_utils.c \		thread_utils.c \
	ThreadEntry.cpp \		ThreadEntry.cpp \
	@@ -53,6 +55,7 @@ libbacktrace_src_files := \

	libbacktrace_shared_libraries := \		libbacktrace_shared_libraries := \
	libbase \		libbase \
			libLLVM \
	liblog \		liblog \
	libunwind \		libunwind \

	@@ -86,6 +89,8 @@ libbacktrace_test_cflags := \
	libbacktrace_test_src_files := \		libbacktrace_test_src_files := \
	backtrace_testlib.c \		backtrace_testlib.c \

			libbacktrace_test_strip_module := false

	module := libbacktrace_test		module := libbacktrace_test
	module_tag := debug		module_tag := debug
	build_type := target		build_type := target
	@@ -107,6 +112,7 @@ backtrace_test_cflags_target := \
	-DENABLE_PSS_TESTS \		-DENABLE_PSS_TESTS \

	backtrace_test_src_files := \		backtrace_test_src_files := \
			backtrace_offline_test.cpp \
	backtrace_test.cpp \		backtrace_test.cpp \
	GetPss.cpp \		GetPss.cpp \
	thread_utils.c \		thread_utils.c \
	@@ -120,6 +126,8 @@ backtrace_test_shared_libraries := \
	libbacktrace \		libbacktrace \
	libbase \		libbase \
	libcutils \		libcutils \
			libLLVM \
			libunwind \

	backtrace_test_shared_libraries_target += \		backtrace_test_shared_libraries_target += \
	libdl \		libdl \
	@@ -127,6 +135,8 @@ backtrace_test_shared_libraries_target += \
	backtrace_test_ldlibs_host += \		backtrace_test_ldlibs_host += \
	-ldl \		-ldl \

			backtrace_test_strip_module := false

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

libbacktrace/Backtrace.cpp

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -30,6 +30,7 @@
	#include <cutils/threads.h>		#include <cutils/threads.h>

	#include "BacktraceLog.h"		#include "BacktraceLog.h"
			#include "BacktraceOffline.h"
	#include "thread_utils.h"		#include "thread_utils.h"
	#include "UnwindCurrent.h"		#include "UnwindCurrent.h"
	#include "UnwindPtrace.h"		#include "UnwindPtrace.h"
	@@ -140,3 +141,8 @@ Backtrace* Backtrace::Create(pid_t pid, pid_t tid, BacktraceMap* map) {
	return new UnwindPtrace(pid, tid, map);		return new UnwindPtrace(pid, tid, map);
	}		}
	}		}

			Backtrace* Backtrace::CreateOffline(pid_t pid, pid_t tid, BacktraceMap* map,
			const backtrace_stackinfo_t& stack, bool cache_file) {
			return new BacktraceOffline(pid, tid, map, stack, cache_file);
			}