From 3dc0b9a3ae90dcac2f1150e6b2dfb0a5a310355b Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Wed, 15 Jan 2020 19:20:50 +0300
Subject: add call stack collection support

---
 include/pdb/all.hpp        |  1 +
 include/pdb/call_stack.hpp | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 include/pdb/dbghelp.hpp    |  4 +++-
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 include/pdb/call_stack.hpp

(limited to 'include/pdb')

diff --git a/include/pdb/all.hpp b/include/pdb/all.hpp
index 84be09e..36a68d3 100644
--- a/include/pdb/all.hpp
+++ b/include/pdb/all.hpp
@@ -6,6 +6,7 @@
 #pragma once
 
 #include "address.hpp"
+#include "call_stack.hpp"
 #include "dbghelp.hpp"
 #include "error.hpp"
 #include "handle.hpp"
diff --git a/include/pdb/call_stack.hpp b/include/pdb/call_stack.hpp
new file mode 100644
index 0000000..7f0c8b0
--- /dev/null
+++ b/include/pdb/call_stack.hpp
@@ -0,0 +1,46 @@
+// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "PDB repository" project.
+// For details, see https://github.com/egor-tensin/pdb-repo.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+#include "dbghelp.hpp"
+
+#include <SafeInt.hpp>
+
+#include <Windows.h>
+
+#include <array>
+#include <cstddef>
+#include <string>
+
+namespace pdb {
+
+class CallStack {
+public:
+    static constexpr std::size_t frames_to_skip = 0;
+    static constexpr std::size_t frames_to_capture = 62;
+
+    // Imposed by CaptureStackBackTrace:
+    static constexpr std::size_t max_length = 62;
+
+    static_assert(frames_to_skip + frames_to_capture <= max_length,
+                  "Call stack length is too large");
+
+    static CallStack capture();
+
+    const std::array<Address, max_length> frames;
+    const std::size_t length;
+
+private:
+    CallStack() = default;
+};
+
+namespace call_stack {
+
+std::string pretty_print_address(const DbgHelp& dbghelp, Address addr);
+
+} // namespace call_stack
+} // namespace pdb
diff --git a/include/pdb/dbghelp.hpp b/include/pdb/dbghelp.hpp
index 2809eac..db9638e 100644
--- a/include/pdb/dbghelp.hpp
+++ b/include/pdb/dbghelp.hpp
@@ -18,7 +18,7 @@ namespace pdb {
 
 class DbgHelp {
 public:
-    DbgHelp();
+    DbgHelp(bool invade_current_process = false);
     ~DbgHelp();
 
     void close();
@@ -28,6 +28,8 @@ public:
     typedef std::function<void(const ModuleInfo&)> OnModule;
     void enum_modules(const OnModule&) const;
 
+    ModuleInfo resolve_module(Address) const;
+
     typedef std::function<void(const SymbolInfo&)> OnSymbol;
     static constexpr auto all_symbols = "*!*";
     void enum_symbols(const ModuleInfo&, const std::string& mask, const OnSymbol&) const;
-- 
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