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, 23 insertions, 0 deletions

diff --git a/libc/malloc_debug/tests/malloc_debug_config_tests.cpp b/libc/malloc_debug/tests/malloc_debug_config_tests.cpp
index 460353583..2a6e39986 100644
--- a/libc/malloc_debug/tests/malloc_debug_config_tests.cpp
+++ b/libc/malloc_debug/tests/malloc_debug_config_tests.cpp
@@ -83,6 +83,11 @@ std::string usage_string(
   "6 malloc_debug     backtrace_dump_prefix.<PID>.final.txt.\n"
   "6 malloc_debug     The default is false.\n"
   "6 malloc_debug \n"
+  "6 malloc_debug   backtrace_full\n"
+  "6 malloc_debug     Any time a backtrace is acquired, use an unwinder that can\n"
+  "6 malloc_debug     display Java stack frames. This unwinder can run slower than\n"
+  "6 malloc_debug     normal unwinder.\n"
+  "6 malloc_debug \n"
   "6 malloc_debug   fill_on_alloc[=XX]\n"
   "6 malloc_debug     On first allocation, fill with the value 0xeb.\n"
   "6 malloc_debug     If XX is set it will only fill up to XX bytes of the\n"
@@ -413,6 +418,24 @@ TEST_F(MallocDebugConfigTest, backtrace_dump_prefix) {
   ASSERT_STREQ("", getFakeLogPrint().c_str());
 }
 
+TEST_F(MallocDebugConfigTest, backtrace_full) {
+  ASSERT_TRUE(InitConfig("backtrace_full")) << getFakeLogPrint();
+  ASSERT_EQ(BACKTRACE_FULL, config->options());
+
+  ASSERT_STREQ("", getFakeLogBuf().c_str());
+  ASSERT_STREQ("", getFakeLogPrint().c_str());
+}
+
+TEST_F(MallocDebugConfigTest, backtrace_full_fail) {
+  ASSERT_FALSE(InitConfig("backtrace_full=200")) << getFakeLogPrint();
+
+  ASSERT_STREQ("", getFakeLogBuf().c_str());
+  std::string log_msg(
+      "6 malloc_debug malloc_testing: value set for option 'backtrace_full' "
+      "which does not take a value\n");
+  ASSERT_STREQ((log_msg + usage_string).c_str(), getFakeLogPrint().c_str());
+}
+
 TEST_F(MallocDebugConfigTest, fill_on_alloc) {
   ASSERT_TRUE(InitConfig("fill_on_alloc=64")) << getFakeLogPrint();
   ASSERT_EQ(FILL_ON_ALLOC, config->options());