Move from libbacktrace to libunwindstack.
Use the new AndroidUnwinder object to replace the libbacktrace version.
Bug: 120606663
Test: Run unit tests.
Test: Force a call to CallStack::log() and verify the backtrace is
Test: reasonable.
Change-Id: I73d909821a33f716d7b0e0997d43c6ab11c7c4f9
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index c9fce8a..c1e935a 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -108,7 +108,6 @@
// In particular, DO NOT add libutils nor anything "above" libui
"libgraphicsenv",
"libnativewindow",
- "libbacktrace",
"libbase",
],
}
@@ -165,6 +164,7 @@
"libnativeloader_lazy",
"libutils",
"libSurfaceFlingerProp",
+ "libunwindstack",
],
static_libs: [
"libEGL_getProcAddress",
diff --git a/opengl/libs/EGL/CallStack.h b/opengl/libs/EGL/CallStack.h
index b7fdf97..96437c3 100644
--- a/opengl/libs/EGL/CallStack.h
+++ b/opengl/libs/EGL/CallStack.h
@@ -16,8 +16,8 @@
#pragma once
-#include <backtrace/Backtrace.h>
#include <log/log.h>
+#include <unwindstack/AndroidUnwinder.h>
#include <memory>
@@ -26,12 +26,15 @@
// Create a callstack with the current thread's stack trace.
// Immediately dump it to logcat using the given logtag.
static void log(const char* logtag) noexcept {
- std::unique_ptr<Backtrace> backtrace(
- Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
- if (backtrace->Unwind(2)) {
- for (size_t i = 0, c = backtrace->NumFrames(); i < c; i++) {
+ unwindstack::AndroidLocalUnwinder unwinder;
+ unwindstack::AndroidUnwinderData data;
+ if (unwinder.Unwind(data)) {
+ for (size_t i = 2, c = data.frames.size(); i < c; i++) {
+ auto& frame = data.frames[i];
+ // Trim the first two frames.
+ frame.num -= 2;
__android_log_print(ANDROID_LOG_DEBUG, logtag, "%s",
- backtrace->FormatFrameData(i).c_str());
+ unwinder.FormatFrame(frame).c_str());
}
}
}