1 | // Use the clang feature for custom xray event logging. |
2 | // |
3 | // RUN: %clangxx_xray -std=c++11 %s -o %t |
4 | // RUN: XRAY_OPTIONS="patch_premain=false verbosity=1 xray_logfile_base=custom-event-logging.xray-" %run %t 2>&1 | FileCheck %s |
5 | // RUN: %clangxx_xray -std=c++11 -fpic -fpie %s -o %t |
6 | // RUN: XRAY_OPTIONS="patch_premain=false verbosity=1 xray_logfile_base=custom-event-logging.xray-" %run %t 2>&1 | FileCheck %s |
7 | // FIXME: Support this in non-x86_64 as well |
8 | // REQUIRES: target={{(aarch64|x86_64)-.*linux.*}} |
9 | // REQUIRES: built-in-llvm-tree |
10 | #include <cstdio> |
11 | #include "xray/xray_interface.h" |
12 | |
13 | [[clang::xray_always_instrument]] void foo() { |
14 | static constexpr char CustomLogged[] = "hello custom logging!" ; |
15 | printf(format: "before calling the custom logging...\n" ); |
16 | __xray_customevent(CustomLogged, sizeof(CustomLogged)); |
17 | printf(format: "after calling the custom logging...\n" ); |
18 | } |
19 | |
20 | void myprinter(void* ptr, size_t size) { |
21 | printf(format: "%.*s\n" , static_cast<int>(size), static_cast<const char*>(ptr)); |
22 | } |
23 | |
24 | int main() { |
25 | foo(); |
26 | // CHECK: before calling the custom logging... |
27 | // CHECK-NEXT: after calling the custom logging... |
28 | printf(format: "setting up custom event handler...\n" ); |
29 | // CHECK-NEXT: setting up custom event handler... |
30 | __xray_set_customevent_handler(entry: myprinter); |
31 | __xray_patch(); |
32 | // CHECK-NEXT: before calling the custom logging... |
33 | foo(); |
34 | // CHECK-NEXT: hello custom logging! |
35 | // CHECK-NEXT: after calling the custom logging... |
36 | printf(format: "removing custom event handler...\n" ); |
37 | // CHECK-NEXT: removing custom event handler... |
38 | __xray_remove_customevent_handler(); |
39 | foo(); |
40 | // CHECK-NEXT: before calling the custom logging... |
41 | // CHECK-NEXT: after calling the custom logging... |
42 | } |
43 | |