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new 63f4ae81021 [feature](debug point) add macro DBUG_RUN_CALLBACK (#33407)
63f4ae81021 is described below
commit 63f4ae810214d25a50f9b249da56bcd44f5208ff
Author: yujun <[email protected]>
AuthorDate: Tue Apr 9 15:32:49 2024 +0800
[feature](debug point) add macro DBUG_RUN_CALLBACK (#33407)
---
be/src/util/debug_points.h | 72 ++++++++++++++++++++------------------
be/test/util/debug_points_test.cpp | 23 +++++-------
2 files changed, 46 insertions(+), 49 deletions(-)
diff --git a/be/src/util/debug_points.h b/be/src/util/debug_points.h
index 76f0ccfcd71..2288c19b3ce 100644
--- a/be/src/util/debug_points.h
+++ b/be/src/util/debug_points.h
@@ -43,7 +43,6 @@
// define some common debug actions
// usage example: DBUG_EXECUTE_IF("xxx", DBUG_BLOCK);
-
#define DBUG_BLOCK \
{ \
LOG(INFO) << "start debug block " << DP_NAME; \
@@ -53,41 +52,35 @@
LOG(INFO) << "end debug block " << DP_NAME; \
}
-// example of debug point with handler.
-//
-// base code:
-//
-// void demo_handler() {
-// int a = 0;
-//
-// DBUG_EXECUTE_IF("set_a", {
-// auto handler = std::any_cast<std::function<void(int&)>>(dp->handler);
-// handler(a);
-// });
+// DBUG_RUN_CALLBACK is usually use in be ut, to exchange local variable
between the injected code and callback code.
+// usage example: DBUG_EXECUTE_IF("xxx", DBUG_RUN_CALLBACK(yyy,...));
+#define DBUG_RUN_CALLBACK(...) \
+ { dp->execute_callback(__VA_ARGS__); }
+
+// example of debug point with callback.
//
-// DBUG_EXECUTE_IF("get_a", {
-// auto handler = std::any_cast<std::function<void(int)>>(dp->handler);
-// handler(a);
-// });
-//}
+// void demo_callback() {
+// int a = 0;
//
-// test code:
+// DBUG_EXECUTE_IF("set_a", DBUG_RUN_CALLBACK(&a));
+// DBUG_EXECUTE_IF("get_a", DBUG_RUN_CALLBACK(a));
+// }
//
-//TEST(DebugPointsTest, Handler) {
-// config::enable_debug_points = true;
-// DebugPoints::instance()->clear();
+// TEST(DebugPointsTest, Callback) {
+// config::enable_debug_points = true;
+// DebugPoints::instance()->clear();
//
-// int got_a = 0;
+// int got_a = 0;
//
-// std::function<void(int&)> set_handler = [](int& a) { a = 1000; };
-// std::function<void(int)> get_handler = [&got_a](int a) { got_a = a; };
-// DebugPoints::instance()->add_with_handler("set_a", set_handler);
-// DebugPoints::instance()->add_with_handler("get_a", get_handler);
+// std::function<void(int*)> set_handler = [](int* a) { *a = 1000; };
+// std::function<void(int)> get_handler = [&got_a](int a) { got_a = a; };
+// DebugPoints::instance()->add_with_callback("set_a", set_handler);
+// DebugPoints::instance()->add_with_callback("get_a", get_handler);
//
-// demo_handler();
+// demo_callback();
//
-// EXPECT_EQ(1000, got_a);
-//}
+// EXPECT_EQ(1000, got_a);
+// }
namespace doris {
@@ -98,10 +91,10 @@ struct DebugPoint {
std::map<std::string, std::string> params;
- // Usually `handler` use in be ut, to exchange local variable between base
code and injected code,
+ // Usually `callback` use in be ut, to exchange local variable between
callback code and injected code,
// or change with different injected handlers.
- // test/util/debug_points_test.cpp#Handler give a example.
- std::any handler;
+ // test/util/debug_points_test.cpp#Callback give a example.
+ std::any callback;
template <typename T>
T param(const std::string& key, T default_value = T()) {
@@ -126,6 +119,16 @@ struct DebugPoint {
return it->second;
}
}
+
+ template <typename... ARGS>
+ void execute_callback(ARGS... args) {
+ if (!callback.has_value()) {
+ throw std::invalid_argument("No set callback");
+ }
+
+ auto func = std::any_cast<std::function<void(ARGS...)>>(callback);
+ func(args...);
+ }
};
class DebugPoints {
@@ -163,8 +166,9 @@ public:
add_with_params(name, {{"value", fmt::format("{}", value)}});
}
- void add_with_handler(const std::string& name, std::any handler) {
- add(name, std::shared_ptr<DebugPoint>(new DebugPoint {.handler =
handler}));
+ template <typename... ARGS>
+ void add_with_callback(const std::string& name,
std::function<void(ARGS...)> callback) {
+ add(name, std::shared_ptr<DebugPoint>(new DebugPoint {.callback =
callback}));
}
static DebugPoints* instance();
diff --git a/be/test/util/debug_points_test.cpp
b/be/test/util/debug_points_test.cpp
index c9827b0438b..3efde436d61 100644
--- a/be/test/util/debug_points_test.cpp
+++ b/be/test/util/debug_points_test.cpp
@@ -96,32 +96,25 @@ TEST(DebugPointsTest, AddTest) {
DebugPoints::instance()->get_debug_param_or_default<std::string>("dbug4", ""));
}
-void demo_handler() {
+void demo_callback() {
int a = 0;
- DBUG_EXECUTE_IF("set_a", {
- auto handler = std::any_cast<std::function<void(int&)>>(dp->handler);
- handler(a);
- });
-
- DBUG_EXECUTE_IF("get_a", {
- auto handler = std::any_cast<std::function<void(int)>>(dp->handler);
- handler(a);
- });
+ DBUG_EXECUTE_IF("set_a", DBUG_RUN_CALLBACK(&a));
+ DBUG_EXECUTE_IF("get_a", DBUG_RUN_CALLBACK(a));
}
-TEST(DebugPointsTest, Handler) {
+TEST(DebugPointsTest, Callback) {
config::enable_debug_points = true;
DebugPoints::instance()->clear();
int got_a = 0;
- std::function<void(int&)> set_handler = [](int& a) { a = 1000; };
+ std::function<void(int*)> set_handler = [](int* a) { *a = 1000; };
std::function<void(int)> get_handler = [&got_a](int a) { got_a = a; };
- DebugPoints::instance()->add_with_handler("set_a", set_handler);
- DebugPoints::instance()->add_with_handler("get_a", get_handler);
+ DebugPoints::instance()->add_with_callback("set_a", set_handler);
+ DebugPoints::instance()->add_with_callback("get_a", get_handler);
- demo_handler();
+ demo_callback();
EXPECT_EQ(1000, got_a);
}
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