1 // Check that we can get a profile from a single-threaded application, on 2 // demand through the XRay logging implementation API. 3 // 4 // FIXME: Make -fxray-modes=xray-profiling part of the default? 5 // RUN: %clangxx_xray -std=c++11 %s -o %t -fxray-modes=xray-profiling 6 // RUN: rm -f xray-log.profiling-single-* 7 // RUN: XRAY_OPTIONS=verbosity=1 \ 8 // RUN: XRAY_PROFILING_OPTIONS=no_flush=true %run %t 9 // RUN: XRAY_OPTIONS=verbosity=1 %run %t 10 // RUN: PROFILES=`ls xray-log.profiling-single-* | wc -l` 11 // RUN: [ $PROFILES -eq 2 ] 12 // RUN: rm -f xray-log.profiling-single-* 13 // 14 // REQUIRES: x86_64-target-arch 15 // REQUIRES: built-in-llvm-tree 16 17 #include "xray/xray_interface.h" 18 #include "xray/xray_log_interface.h" 19 #include <cassert> 20 #include <cstdio> 21 #include <string> 22 23 [[clang::xray_always_instrument]] void f2() { return; } 24 [[clang::xray_always_instrument]] void f1() { f2(); } 25 [[clang::xray_always_instrument]] void f0() { f1(); } 26 27 using namespace std; 28 29 volatile int buffer_counter = 0; 30 31 [[clang::xray_never_instrument]] void process_buffer(const char *, XRayBuffer) { 32 // FIXME: Actually assert the contents of the buffer. 33 ++buffer_counter; 34 } 35 36 [[clang::xray_always_instrument]] int main(int, char **) { 37 assert(__xray_log_select_mode("xray-profiling") == 38 XRayLogRegisterStatus::XRAY_REGISTRATION_OK); 39 assert(__xray_log_get_current_mode() != nullptr); 40 std::string current_mode = __xray_log_get_current_mode(); 41 assert(current_mode == "xray-profiling"); 42 assert(__xray_patch() == XRayPatchingStatus::SUCCESS); 43 assert(__xray_log_init_mode("xray-profiling", "") == 44 XRayLogInitStatus::XRAY_LOG_INITIALIZED); 45 f0(); 46 assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED); 47 f0(); 48 assert(__xray_log_process_buffers(process_buffer) == 49 XRayLogFlushStatus::XRAY_LOG_FLUSHED); 50 // There's always at least one buffer, containing the profile file header. We 51 // assert that we have two, to indicate that we're expecting exactly one 52 // thread's worth of data. 53 assert(buffer_counter == 2); 54 assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED); 55 56 // Let's reset the counter. 57 buffer_counter = 0; 58 59 assert(__xray_log_init_mode("xray-profiling", "") == 60 XRayLogInitStatus::XRAY_LOG_INITIALIZED); 61 f0(); 62 assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED); 63 f0(); 64 assert(__xray_log_process_buffers(process_buffer) == 65 XRayLogFlushStatus::XRAY_LOG_FLUSHED); 66 assert(buffer_counter == 2); 67 assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED); 68 } 69