Add support for using the new unwinder.

This adds a new option backtrace_full, when it is set, then it will use
libunwindstack.

Modify the dump to file data to dump the extra information from libunwindstack.
Along with the new dump file format, change the version to v1.1.
Updated document for new format of file data.

Add unit tests for the new functionality.

Bug: 74361929

Test: Ran unit tests.
Change-Id: I40fff795f5346bba7b9d7fde2e04f269ff4eb7f1

1 files changed, 8 insertions, 0 deletions

diff --git a/libc/malloc_debug/Config.cpp b/libc/malloc_debug/Config.cpp
index 2c94fe81f..96fc27f73 100644
--- a/libc/malloc_debug/Config.cpp
+++ b/libc/malloc_debug/Config.cpp
@@ -93,6 +93,9 @@ const std::unordered_map<std::string, Config::OptionInfo> Config::kOptions = {
     {
         "backtrace_dump_prefix", {0, &Config::SetBacktraceDumpPrefix},
     },
+    {
+        "backtrace_full", {BACKTRACE_FULL, &Config::VerifyValueEmpty},
+    },
 
     {
         "fill", {FILL_ON_ALLOC | FILL_ON_FREE, &Config::SetFill},
@@ -363,6 +366,11 @@ void Config::LogUsage() const {
   error_log("    backtrace_dump_prefix.<PID>.final.txt.");
   error_log("    The default is false.");
   error_log("");
+  error_log("  backtrace_full");
+  error_log("    Any time a backtrace is acquired, use an unwinder that can");
+  error_log("    display Java stack frames. This unwinder can run slower than");
+  error_log("    normal unwinder.");
+  error_log("");
   error_log("  fill_on_alloc[=XX]");
   error_log("    On first allocation, fill with the value 0x%02x.", DEFAULT_FILL_ALLOC_VALUE);
   error_log("    If XX is set it will only fill up to XX bytes of the");