Suyu/breakpad
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/breakpad.git synced 2025-12-24 16:24:52 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Handle frame pointer omission, (#21), part 4 (final part!): FPO stackwalker.

Browse source 
r=bryner
 - This change allows Airbag to properly walk win32 stacks produced by code
   built with MSVC's frame pointer omission optimization (/Oy).  This
   optimization is enabled at /O1 and /O2.
 - There too many interface and file format changes to list here.

http://groups.google.com/group/airbag-dev/browse_thread/thread/85ce85bfa8457ece


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@42 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
mmentovai 2006-10-20 01:46:38 +00:00
parent 5afd60b067
commit 246f406828
33 changed files with 2643 additions and 1744 deletions
Download patch file Download diff file Expand all files Collapse all files

38
src/processor/stackwalker.h
View file

@ -33,8 +33,7 @@
// methods that apply to stacks from all systems. Specific implementations
// will extend this class by providing GetContextFrame and GetCallerFrame
// methods to fill in system-specific data in a StackFrame structure.
// Stackwalker assembles these StackFrame strucutres into a vector of
// StackFrames.
// Stackwalker assembles these StackFrame strucutres into a CallStack.
//
// Author: Mark Mentovai
@ -44,14 +43,15 @@
#include <vector>
#include "google/stack_frame.h"
#include "processor/memory_region.h"
#include "processor/stack_frame_info.h"
namespace google_airbag {
class CallStack;
class MemoryRegion;
class MinidumpContext;
class MinidumpModuleList;
struct StackFrame;
class SymbolSupplier;
@ -59,10 +59,9 @@ class Stackwalker {
public:
virtual ~Stackwalker() {}
// Fills the given vector of StackFrames by calling GetContextFrame and
// GetCallerFrame, and populating the returned frames with all available
// data.
void Walk(StackFrames *frames);
// Fills the given CallStack by calling GetContextFrame and GetCallerFrame,
// and populating the returned frames with all available data.
void Walk(CallStack* stack);
// Returns a new concrete subclass suitable for the CPU that a stack was
// generated on, according to the CPU type indicated by the context
@ -88,23 +87,26 @@ class Stackwalker {
MemoryRegion *memory_;
// Additional debugging information for each stack frame. This vector
// parallels the StackFrames vector. Subclasses may use this information
// to walk the stack.
// parallels the CallStack. Subclasses may use this information to help
// walk the stack.
std::vector<StackFrameInfo> stack_frame_info_;
private:
// Obtains the context frame, the innermost called procedure in a stack
// trace. Returns false on failure.
virtual bool GetContextFrame(StackFrame *frame) = 0;
// trace. Returns NULL on failure. GetContextFrame allocates a new
// StackFrame (or StackFrame subclass), ownership of which is taken by
// the caller.
virtual StackFrame* GetContextFrame() = 0;
// Obtains a caller frame. Each call to GetCallerFrame should return the
// frame that called the last frame returned by GetContextFrame or
// GetCallerFrame. To aid this purpose, walked_frames contains the
// StackFrames vector of frames that have already been walked.
// GetCallerFrame should return false on failure or when there are no more
// caller frames (when the end of the stack has been reached).
virtual bool GetCallerFrame(StackFrame *frame,
const StackFrames *walked_frames) = 0;
// GetCallerFrame. To aid this purpose, stack contains the CallStack
// made of frames that have already been walked. GetCallerFrame should
// return NULL on failure or when there are no more caller frames (when
// the end of the stack has been reached). GetCallerFrame allocates a new
// StackFrame (or StackFrame subclass), ownership of which is taken by
// the caller.
virtual StackFrame* GetCallerFrame(const CallStack *stack) = 0;
// A list of modules, for populating each StackFrame's module information.
// This field is optional and may be NULL.