diff options
Diffstat (limited to 'chromium/base/profiler/native_unwinder_android.h')
| -rw-r--r-- | chromium/base/profiler/native_unwinder_android.h | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/chromium/base/profiler/native_unwinder_android.h b/chromium/base/profiler/native_unwinder_android.h index 926a581b32a..62774e6adf5 100644 --- a/chromium/base/profiler/native_unwinder_android.h +++ b/chromium/base/profiler/native_unwinder_android.h @@ -6,14 +6,26 @@ #define BASE_PROFILER_NATIVE_UNWINDER_ANDROID_H_ #include "base/profiler/unwinder.h" - -namespace unwindstack { -class Maps; -class Memory; -} // namespace unwindstack +#include "third_party/libunwindstack/src/libunwindstack/include/unwindstack/Maps.h" +#include "third_party/libunwindstack/src/libunwindstack/include/unwindstack/Memory.h" namespace base { +// Implementation of unwindstack::Memory that restricts memory access to a stack +// buffer, used by NativeUnwinderAndroid. While unwinding, only memory accesses +// within the stack should be performed to restore registers. +class UnwindStackMemoryAndroid : public unwindstack::Memory { + public: + UnwindStackMemoryAndroid(uintptr_t stack_ptr, uintptr_t stack_top); + ~UnwindStackMemoryAndroid() override; + + size_t Read(uint64_t addr, void* dst, size_t size) override; + + private: + const uintptr_t stack_ptr_; + const uintptr_t stack_top_; +}; + // Native unwinder implementation for Android, using libunwindstack. class NativeUnwinderAndroid : public Unwinder { public: @@ -22,10 +34,6 @@ class NativeUnwinderAndroid : public Unwinder { // all profiles in a process. static std::unique_ptr<unwindstack::Maps> CreateMaps(); static std::unique_ptr<unwindstack::Memory> CreateProcessMemory(); - // Adds modules found from executable loaded memory regions to |module_cache|. - static void AddInitialModulesFromMaps( - const unwindstack::Maps& memory_regions_map, - ModuleCache* module_cache); // |exclude_module_with_base_address| is used to exclude a specific module // and let another unwinder take control. TryUnwind() will exit with @@ -33,7 +41,7 @@ class NativeUnwinderAndroid : public Unwinder { // encountered in that module. NativeUnwinderAndroid(unwindstack::Maps* memory_regions_map, unwindstack::Memory* process_memory, - uintptr_t exclude_module_with_base_address = 0); + uintptr_t exclude_module_with_base_address); ~NativeUnwinderAndroid() override; NativeUnwinderAndroid(const NativeUnwinderAndroid&) = delete; @@ -47,6 +55,12 @@ class NativeUnwinderAndroid : public Unwinder { ModuleCache* module_cache, std::vector<Frame>* stack) const override; + // Adds modules found from executable loaded memory regions to |module_cache|. + // Public for test access. + static void AddInitialModulesFromMaps( + const unwindstack::Maps& memory_regions_map, + ModuleCache* module_cache); + private: void EmitDexFrame(uintptr_t dex_pc, ModuleCache* module_cache, |