Add ability to skip function name resolution.

Bug: 73558129

Test: New unit tests pass.
Change-Id: I3a6b17d2590aacb367ab3e3a51cc85be73ad64eb

2 files changed, 9 insertions, 0 deletions

diff --git a/libbacktrace/UnwindStack.cpp b/libbacktrace/UnwindStack.cpp
index 7e2e6d05e..0e32e4740 100644
--- a/libbacktrace/UnwindStack.cpp
+++ b/libbacktrace/UnwindStack.cpp
@@ -52,6 +52,7 @@ bool Backtrace::Unwind(unwindstack::Regs* regs, BacktraceMap* back_map,
   auto process_memory = stack_map->process_memory();
   unwindstack::Unwinder unwinder(MAX_BACKTRACE_FRAMES + num_ignore_frames, stack_map->stack_maps(),
                                  regs, stack_map->process_memory());
+  unwinder.SetResolveNames(stack_map->ResolveNames());
   if (stack_map->GetJitDebug() != nullptr) {
     unwinder.SetJitDebug(stack_map->GetJitDebug(), regs->Arch());
   }
diff --git a/libbacktrace/include/backtrace/BacktraceMap.h b/libbacktrace/include/backtrace/BacktraceMap.h
index 7b26079cc..da544725d 100644
--- a/libbacktrace/include/backtrace/BacktraceMap.h
+++ b/libbacktrace/include/backtrace/BacktraceMap.h
@@ -154,6 +154,13 @@ public:
 
   const std::vector<std::string>& GetSuffixesToIgnore() { return suffixes_to_ignore_; }
 
+  // Disabling the resolving of names results in the function name being
+  // set to an empty string and the function offset being set to zero
+  // in the frame data when unwinding.
+  void SetResolveNames(bool resolve) { resolve_names_ = resolve; }
+
+  bool ResolveNames() { return resolve_names_; }
+
  protected:
   BacktraceMap(pid_t pid);
 
@@ -164,6 +171,7 @@ public:
   pid_t pid_;
   std::deque<backtrace_map_t> maps_;
   std::vector<std::string> suffixes_to_ignore_;
+  bool resolve_names_ = true;
 };
 
 class ScopedBacktraceMapIteratorLock {