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Provide a mechanism for SymbolSuppliers to interrupt processing (#93)

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git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@80 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
bryner 2006-12-08 04:13:51 +00:00
parent 283fd39248
commit f33b8d2d07
13 changed files with 174 additions and 96 deletions
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27
src/processor/stackwalker.cc
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@ -34,6 +34,8 @@
// Author: Mark Mentovai
#include <cassert>
#include "google_airbag/processor/stackwalker.h"
#include "google_airbag/processor/call_stack.h"
#include "google_airbag/processor/code_module.h"
@ -57,10 +59,10 @@ Stackwalker::Stackwalker(MemoryRegion *memory, const CodeModules *modules,
}
CallStack* Stackwalker::Walk() {
bool Stackwalker::Walk(CallStack *stack) {
assert(stack);
SourceLineResolver resolver;
scoped_ptr<CallStack> stack(new CallStack());
stack->Clear();
// stack_frame_info parallels the CallStack. The vector is passed to the
// GetCallerFrame function. It contains information that may be helpful
@ -87,9 +89,18 @@ CallStack* Stackwalker::Walk() {
if (module) {
frame->module = module;
if (!resolver.HasModule(frame->module->code_file()) && supplier_) {
string symbol_file = supplier_->GetSymbolFile(module);
if (!symbol_file.empty()) {
resolver.LoadModule(frame->module->code_file(), symbol_file);
string symbol_file;
SymbolSupplier::SymbolResult symbol_result =
supplier_->GetSymbolFile(module, &symbol_file);
switch (symbol_result) {
case SymbolSupplier::FOUND:
resolver.LoadModule(frame->module->code_file(), symbol_file);
break;
case SymbolSupplier::NOT_FOUND:
break; // nothing to do
case SymbolSupplier::INTERRUPT:
return false;
}
}
frame_info.reset(resolver.FillSourceLineInfo(frame.get()));
@ -105,10 +116,10 @@ CallStack* Stackwalker::Walk() {
frame_info.reset(NULL);
// Get the next frame and take ownership.
frame.reset(GetCallerFrame(stack.get(), stack_frame_info));
frame.reset(GetCallerFrame(stack, stack_frame_info));
}
return stack.release();
return true;
}