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Limit the number of frames we try to walk to prevent runaway processors.

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Review URL: http://breakpad.appspot.com/175001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@672 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
thestig@chromium.org 2010-08-26 21:38:51 +00:00
parent 64506d2ed7
commit 8e77c078d6
2 changed files with 13 additions and 2 deletions
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8
src/google_breakpad/processor/stackwalker.h
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@ -48,7 +48,6 @@
namespace google_breakpad {
class CallStack;
class CodeModule;
class CodeModules;
class MemoryRegion;
class MinidumpContext;
@ -80,6 +79,9 @@ class Stackwalker {
SymbolSupplier *supplier,
SourceLineResolverInterface *resolver);
static void set_max_frames(u_int32_t max_frames) { max_frames_ = max_frames; }
static u_int32_t max_frames() { return max_frames_; }
protected:
// system_info identifies the operating system, NULL or empty if unknown.
// memory identifies a MemoryRegion that provides the stack memory
@ -146,6 +148,10 @@ class Stackwalker {
// this in order to avoid repeatedly looking them up again within
// one minidump.
set<std::string> no_symbol_modules_;
// The maximum number of frames Stackwalker will walk through.
// This defaults to 1024 to prevent infinite loops.
static u_int32_t max_frames_;
};