1 // Check that we can install an implementation associated with a mode.
2 //
3 // RUN: rm -f xray-log.logging-modes*
4 // RUN: %clangxx_xray -std=c++11 %s -o %t -fxray-modes=none
5 // RUN: %run %t | FileCheck %s
6 //
7 // UNSUPPORTED: target-is-mips64,target-is-mips64el
8
9 #include "xray/xray_interface.h"
10 #include "xray/xray_log_interface.h"
11 #include <cassert>
12 #include <cstdio>
13 #include <string>
14
printing_handler(int32_t fid,XRayEntryType)15 [[clang::xray_never_instrument]] void printing_handler(int32_t fid,
16 XRayEntryType) {
17 thread_local volatile bool printing = false;
18 if (printing)
19 return;
20 printing = true;
21 std::printf("printing %d\n", fid);
22 printing = false;
23 }
24
next_buffer(XRayBuffer buffer)25 [[clang::xray_never_instrument]] XRayBuffer next_buffer(XRayBuffer buffer) {
26 static const char data[10] = {};
27 static const XRayBuffer first_and_last{data, 10};
28 if (buffer.Data == nullptr)
29 return first_and_last;
30 if (buffer.Data == first_and_last.Data)
31 return XRayBuffer{nullptr, 0};
32 assert(false && "Invalid buffer provided.");
33 }
34
35 static constexpr char Options[] = "additional_flags";
36
37 [[clang::xray_never_instrument]] XRayLogInitStatus
printing_init(size_t BufferSize,size_t MaxBuffers,void * Config,size_t ArgsSize)38 printing_init(size_t BufferSize, size_t MaxBuffers, void *Config,
39 size_t ArgsSize) {
40 // We require that the printing init is called through the
41 // __xray_log_init_mode(...) implementation, and that the promised contract is
42 // enforced.
43 assert(BufferSize == 0);
44 assert(MaxBuffers == 0);
45 assert(Config != nullptr);
46 assert(ArgsSize == 0 || ArgsSize == sizeof(Options));
47 __xray_log_set_buffer_iterator(next_buffer);
48 return XRayLogInitStatus::XRAY_LOG_INITIALIZED;
49 }
50
printing_finalize()51 [[clang::xray_never_instrument]] XRayLogInitStatus printing_finalize() {
52 return XRayLogInitStatus::XRAY_LOG_FINALIZED;
53 }
54
printing_flush_log()55 [[clang::xray_never_instrument]] XRayLogFlushStatus printing_flush_log() {
56 __xray_log_remove_buffer_iterator();
57 return XRayLogFlushStatus::XRAY_LOG_FLUSHED;
58 }
59
callme()60 [[clang::xray_always_instrument]] void callme() { std::printf("called me!\n"); }
61
62 static auto buffer_counter = 0;
63
process_buffer(const char *,XRayBuffer)64 void process_buffer(const char *, XRayBuffer) { ++buffer_counter; }
65
main(int argc,char ** argv)66 int main(int argc, char **argv) {
67 assert(__xray_log_register_mode("custom",
68 {printing_init, printing_finalize,
69 printing_handler, printing_flush_log}) ==
70 XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
71 assert(__xray_log_select_mode("custom") ==
72 XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
73 assert(__xray_log_get_current_mode() != nullptr);
74 std::string current_mode = __xray_log_get_current_mode();
75 assert(current_mode == "custom");
76 assert(__xray_patch() == XRayPatchingStatus::SUCCESS);
77 assert(__xray_log_init_mode("custom", "flags_config_here=true") ==
78 XRayLogInitStatus::XRAY_LOG_INITIALIZED);
79
80 // Also test that we can use the "binary" version of the
81 // __xray_log_niit_mode(...) API.
82 assert(__xray_log_init_mode_bin("custom", Options, sizeof(Options)) ==
83 XRayLogInitStatus::XRAY_LOG_INITIALIZED);
84
85 // CHECK: printing {{.*}}
86 callme(); // CHECK: called me!
87 // CHECK: printing {{.*}}
88 assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED);
89 assert(__xray_log_process_buffers(process_buffer) ==
90 XRayLogFlushStatus::XRAY_LOG_FLUSHED);
91 assert(buffer_counter == 1);
92 assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
93 assert(__xray_log_select_mode("not-found") ==
94 XRayLogRegisterStatus::XRAY_MODE_NOT_FOUND);
95 }
96