Add support for UnwinderFromPid object.
This object is able to be easily used from other code and can be used
to replace the libbacktrace calls in other parts of the platform.
Also, demangle the function names when calling FormatFrame.
Bug: 120606663
Test: Unit tests pass, debuggerd using this code directly passes unit
Test: tests.
Change-Id: Ifd8cf9bdd89174c1736810711d20e9f37f29b1bf
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 39a09cf..b9d8b3d 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -221,6 +221,19 @@
return elf.get();
}
+bool MapInfo::GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset) {
+ {
+ // Make sure no other thread is trying to update this elf object.
+ std::lock_guard<std::mutex> guard(mutex_);
+ if (elf == nullptr) {
+ return false;
+ }
+ }
+ // No longer need the lock, once the elf object is created, it is not deleted
+ // until this object is deleted.
+ return elf->GetFunctionName(addr, name, func_offset);
+}
+
uint64_t MapInfo::GetLoadBias(const std::shared_ptr<Memory>& process_memory) {
uint64_t cur_load_bias = load_bias.load();
if (cur_load_bias != static_cast<uint64_t>(-1)) {