compiler-rt/test/xray/TestCases/Posix/fdr-thread-order.cpp

   1 // RUN: rm -rf %t && mkdir %t
   2 // RUN: %clangxx_xray -g -std=c++11 %s -o %t.exe
   3 // RUN: XRAY_OPTIONS="patch_premain=false \
   4 // RUN:    xray_logfile_base=%t/ xray_mode=xray-fdr verbosity=1" \
   5 // RUN:    XRAY_FDR_OPTIONS=func_duration_threshold_us=0 %run %t.exe 2>&1 | \
   6 // RUN:    FileCheck %s
   7 // RUN: %llvm_xray convert --symbolize --output-format=yaml -instr_map=%t.exe %t/*
   8 // RUN: %llvm_xray convert --symbolize --output-format=yaml -instr_map=%t.exe %t/* | \
   9 // RUN:   FileCheck %s --check-prefix TRACE
  10
  11 // REQUIRES: target={{(aarch64|loongarch64|x86_64)-.*}}
  12 // REQUIRES: built-in-llvm-tree
  13
  14 #include "xray/xray_log_interface.h"
  15 #include <atomic>
  16 #include <cassert>
  17 #include <thread>
  18
  19 std::atomic<uint64_t> var{0};
  20
  21 [[clang::xray_always_instrument]] void __attribute__((noinline)) f1() {
  22   for (auto i = 0; i < 1 << 20; ++i)
  23     ++var;
  24 }
  25
  26 [[clang::xray_always_instrument]] void __attribute__((noinline)) f2() {
  27   for (auto i = 0; i < 1 << 20; ++i)
  28     ++var;
  29 }
  30
  31 int main(int argc, char *argv[]) {
  32   __xray_patch();
  33   assert(__xray_log_init_mode("xray-fdr", "") ==
  34          XRayLogInitStatus::XRAY_LOG_INITIALIZED);
  35
  36   std::atomic_thread_fence(std::memory_order_acq_rel);
  37
  38   {
  39     std::thread t1([] { f1(); });
  40     std::thread t2([] { f2(); });
  41     t1.join();
  42     t2.join();
  43   }
  44
  45   std::atomic_thread_fence(std::memory_order_acq_rel);
  46   __xray_log_finalize();
  47   __xray_log_flushLog();
  48   __xray_unpatch();
  49   return var > 0 ? 0 : 1;
  50   // CHECK: {{.*}}XRay: Log file in '{{.*}}'
  51   // CHECK-NOT: Failed
  52 }
  53
  54 // We want to make sure that the order of the function log doesn't matter.
  55 // TRACE-DAG: - { type: 0, func-id: [[FID1:[0-9]+]], function: {{.*f1.*}}, cpu: {{.*}}, thread: [[THREAD1:[0-9]+]], process: [[PROCESS:[0-9]+]], kind: function-enter, tsc: {{[0-9]+}}, data: '' }
  56 // TRACE-DAG: - { type: 0, func-id: [[FID2:[0-9]+]], function: {{.*f2.*}}, cpu: {{.*}}, thread: [[THREAD2:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}}, data: '' }
  57 // TRACE-DAG: - { type: 0, func-id: [[FID1]], function: {{.*f1.*}}, cpu: {{.*}}, thread: [[THREAD1]], process: [[PROCESS]], kind: {{function-exit|function-tail-exit}}, tsc: {{[0-9]+}}, data: '' }
  58 // TRACE-DAG: - { type: 0, func-id: [[FID2]], function: {{.*f2.*}}, cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: {{function-exit|function-tail-exit}}, tsc: {{[0-9]+}}, data: '' }