From 70edf28235f4ec2554288ed200037e98b3e60a93 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Tue, 30 Sep 2014 15:53:13 -0700
Subject: [PATCH] attempt to use function hooks.

---
 binding.gyp       |  1 +
 lib/bitcoind.js   |  4 ++--
 src/bitcoindjs.cc | 38 +++++++++++++++++++++++++++++++++++++-
 3 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/binding.gyp b/binding.gyp
index 22b905fb..62ba66d0 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -41,6 +41,7 @@
     'cflags_cc': [
       '-fexceptions',
       '-frtti',
+      # '-finstrument-functions',
     ],
     'libraries': [
       # standard libs:
diff --git a/lib/bitcoind.js b/lib/bitcoind.js
index 2b088f16..a59a4142 100644
--- a/lib/bitcoind.js
+++ b/lib/bitcoind.js
@@ -57,7 +57,7 @@ process.on = function(name, listener) {
       return;
     }
   }
-  return on.apply(this, arguments);
+  return Bitcoin._processOn.apply(this, arguments);
 };
 
 Bitcoin.prototype.start = function(callback) {
@@ -92,7 +92,7 @@ Bitcoin.prototype.start = function(callback) {
     });
 
     // Finally set signal handlers
-    process.on = process.addListener = Bitcoind._processOn;
+    process.on = process.addListener = Bitcoin._processOn;
     Bitcoin._signalQueue.forEach(function(event) {
       process.on(event[0], event[1]);
     });
diff --git a/src/bitcoindjs.cc b/src/bitcoindjs.cc
index 2def4cc3..9105ea60 100644
--- a/src/bitcoindjs.cc
+++ b/src/bitcoindjs.cc
@@ -88,6 +88,7 @@
 
 #include <stdint.h>
 #include <signal.h>
+#include <stdio.h>
 
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/filesystem.hpp>
@@ -1226,7 +1227,7 @@ NAN_METHOD(FillTransaction) {
   }
 
   Local<Object> js_tx = Local<Object>::Cast(args[0]);
-  Local<Object> options = Local<Object>::Cast(args[1]);
+  // Local<Object> options = Local<Object>::Cast(args[1]);
 
   String::Utf8Value tx_hex_(js_tx->Get(NanNew<String>("hex"))->ToString());
   std::string tx_hex = std::string(*tx_hex_);
@@ -2366,6 +2367,41 @@ jstx_to_ctx(const Local<Object> entry, CTransaction& tx, uint256 hashBlock) {
 }
 #endif
 
+/**
+ * Hooks
+ */
+
+#if 0
+static int last_height = -1;
+
+extern "C" void __attribute__ ((constructor))
+trace_begin(void) {
+  return;
+}
+
+extern "C" void __attribute__ ((destructor))
+trace_end(void) {
+  return;
+}
+
+extern "C" void
+__cyg_profile_func_enter(void *func,  void *caller) {
+  return;
+}
+
+extern "C" void
+__cyg_profile_func_exit(void *func, void *caller) {
+  int cur_height = chainActive.Height();
+  if (cur_height != last_height) {
+    printf("new block\n");
+    last_height = cur_height;
+  }
+  // if (func == &AcceptBlock || caller == &AcceptBlock || func == AcceptBlock || caller == AcceptBlock) {
+  //   printf("accept block\n");
+  // }
+}
+#endif
+
 /**
  * Init
  */