Fix example

example/libbpftime_example/Makefile

@@ -11,10 +11,8 @@ LDFLAGS = -L$(HOME)/.bpftime
 LDLIBS = -lbpftime -lboost_system -lrt -lbpf
 
 SHM_SRC = main.cpp
-SPDLOG_SRC = spdlog_exam.cpp
 
 SHM_TARGET = shm_example
-SPDLOG_TARGET = spdlog_exam
 
 help:
 	@echo "Available targets:"
@@ -24,9 +22,6 @@ help:
 shm_example: $(SHM_SRC) ## build shared memory example
 	$(CXX) -o $(SHM_TARGET) $(SHM_SRC) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS)
 
-sdplog_exam: $(SPDLOG_SRC) ## build spdlog example
-	$(CXX) -o $(SPDLOG_TARGET) $(SPDLOG_SRC) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS)
-
 .PHONY: clean
 clean: ## clean the build
-	rm -f $(SHM_TARGET) $(SPDLOG_TARGET)
+	rm -f $(SHM_TARGET) example_shm.json

example/libbpftime_example/README.md

@@ -29,17 +29,11 @@ run `make` and you will see the following output
 ```shell
 Available targets:
  shm_example          build shared memory example
- sdplog_exam          build spdlog example
  clean                clean the build
 ```
 
 command to execute the code:
 when not using llvm-jit
 ```shell
 g++ -o example main.cpp -I../../runtime/include -I../../vm/compat/include/ -I../../third_party/spdlog/include -I../../vm/vm-core/include -L~/.bpftime -lbpftime -lboost_system -lrt -lbpf
-```
-
-for `spdlog_exam.cpp`
-```shell
-g++ -o example spdlog_exam.cpp -I../../runtime/include -I../../vm/vm-core/compat/include -I../../vm/compat/include/ -I../../third_party/spdlog/include -L~/.bpftime -lbpftime -lboost_system -lrt -lbpf
 ```

example/libbpftime_example/ebpf.json

@@ -0,0 +1,12 @@
+{
+    "1": {
+        "type": "bpf_prog_handler",
+        "name": "example_prog",
+        "attr": {
+            "insns": "abcd1234ef567890",
+            "type": 1,
+            "cnt": 1,
+            "attach_fds": [2, 3]
+        }
+    }
+}

example/libbpftime_example/main.cpp

@@ -4,7 +4,13 @@
 int main() {
     bpftime_initialize_global_shm(bpftime::shm_open_type::SHM_CREATE_OR_OPEN);
     const char* jsonFileName = "example_shm.json";
+    const char* importJsonName = "ebpf.json";
     SPDLOG_INFO("GLOBAL memory initialized ");
+    // load json program to shm
+    bpftime_import_global_shm_from_json(importJsonName);
+    // export it to another json file
     bpftime_export_global_shm_to_json(jsonFileName);
+    // remove content from global shm
+    bpftime_remove_global_shm();
     return 0;
-}
+}