commit 9b576b4ed1dbe035952f3106d8f4b6993125ed6f
author Shih-wei Liao <sliao@google.com> Mon Aug 29 01:45:07 2011 -0700
committer Shih-wei Liao <sliao@google.com> Mon Aug 29 12:59:51 2011 -0700
tree 8505c2429b204e799caa045bcb805e70e6e2ea87
parent 9f30b38d74990286ce27c3a45368f73dbe3638f0

Add StackVisitor, CountStackDepthVisitor, BuildStackTraceVisitor for EH.

In addition to EH, GC can use StackVisitor too.

Crawl stack in 2 passes, using CountStackDepthVisitor and
BuildStackTraceVisitor, respectively. Note that Pass 1 computes
the depth with a doubly-nested loop.

Change-Id: If1e3d3212037426b10ac5e6a01138acfab710e6b

src/exception_test.cc

diff --git a/src/exception_test.cc b/src/exception_test.cc
index f2701dd..259c0a4 100644
--- a/src/exception_test.cc
+++ b/src/exception_test.cc
@@ -144,11 +144,13 @@
   fake_stack[top_of_stack++] = 3;
   fake_stack[top_of_stack++] = reinterpret_cast<uintptr_t>(method_f_);
   fake_stack[top_of_stack++] = 3;
+  fake_stack[top_of_stack++] = NULL;
+  fake_stack[top_of_stack++] = 0;
 
   Thread* thread = Thread::Current();
   thread->SetTopOfStack(fake_stack);
 
-  ObjectArray<StackTraceElement>* trace_array = thread->AllocStackTrace(2);
+  ObjectArray<StackTraceElement>* trace_array = thread->AllocStackTrace();
 
   ASSERT_TRUE(trace_array->Get(0) != NULL);
   EXPECT_STREQ("java.lang.MyClass",