vendor/compiler-rt/compiler-rt-trunk-r338150

1 files changed, 112 insertions, 0 deletions

diff --git a/test/xray/TestCases/Posix/fdr-mode.cc b/test/xray/TestCases/Posix/fdr-mode.cc
new file mode 100644
index 000000000000..b12d97c0005a
--- /dev/null
+++ b/test/xray/TestCases/Posix/fdr-mode.cc
@@ -0,0 +1,112 @@
+// RUN: %clangxx_xray -g -std=c++11 %s -o %t
+// RUN: rm -f fdr-logging-test-*
+// RUN: rm -f fdr-unwrite-test-*
+// RUN: XRAY_OPTIONS="patch_premain=false xray_logfile_base=fdr-logging-test- \
+// RUN:     xray_mode=xray-fdr verbosity=1" \
+// RUN: XRAY_FDR_OPTIONS="func_duration_threshold_us=0" \
+// RUN:     %run %t 2>&1 | FileCheck %s
+// RUN: XRAY_OPTIONS="patch_premain=false \
+// RUN:     xray_logfile_base=fdr-unwrite-test- xray_mode=xray-fdr \
+// RUN:     verbosity=1" \
+// RUN: XRAY_FDR_OPTIONS="func_duration_threshold_us=5000" \
+// RUN:     %run %t 2>&1 | FileCheck %s
+// RUN: %llvm_xray convert --symbolize --output-format=yaml -instr_map=%t \
+// RUN:     "`ls fdr-logging-test-* | head -1`" \
+// RUN:     | FileCheck %s --check-prefix=TRACE
+// RUN: %llvm_xray convert --symbolize --output-format=yaml -instr_map=%t \
+// RUN:     "`ls fdr-unwrite-test-* | head -1`" \
+// RUN:     | FileCheck %s --check-prefix=UNWRITE
+// RUN: rm fdr-logging-test-*
+// RUN: rm fdr-unwrite-test-*
+// FIXME: Make llvm-xray work on non-x86_64 as well.
+// REQUIRES: x86_64-target-arch
+// REQUIRES: built-in-llvm-tree
+
+#include "xray/xray_log_interface.h"
+#include <cassert>
+#include <chrono>
+#include <cstdio>
+#include <iostream>
+#include <stdlib.h>
+#include <thread>
+#include <time.h>
+
+thread_local uint64_t var = 0;
+[[clang::xray_always_instrument]] void __attribute__((noinline)) fC() { ++var; }
+
+[[clang::xray_always_instrument]] void __attribute__((noinline)) fB() { fC(); }
+
+[[clang::xray_always_instrument]] void __attribute__((noinline)) fA() { fB(); }
+
+[[clang::xray_always_instrument, clang::xray_log_args(1)]]
+void __attribute__((noinline)) fArg(int) { }
+
+int main(int argc, char *argv[]) {
+  using namespace __xray;
+  std::cout << "Logging before init." << std::endl;
+  // CHECK: Logging before init.
+  assert(__xray_log_select_mode("xray-fdr") ==
+         XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
+  auto status =
+      __xray_log_init_mode("xray-fdr", "buffer_size=16384:buffer_max=10");
+  assert(status == XRayLogInitStatus::XRAY_LOG_INITIALIZED);
+  std::cout << "Init status " << status << std::endl;
+  // CHECK: Init status {{.*}}
+  std::cout << "Patching..." << std::endl;
+  // CHECK: Patching...
+  __xray_patch();
+  fA();
+  fC();
+  fB();
+  fA();
+  fC();
+  std::thread other_thread([]() {
+    fC();
+    fB();
+    fA();
+    fArg(1);
+  });
+  other_thread.join();
+  std::cout << "Joined" << std::endl;
+  // CHECK: Joined
+  std::cout << "Finalize status " << __xray_log_finalize() << std::endl;
+  // CHECK: Finalize status {{.*}}
+  fC();
+  std::cout << "Main execution var = " << var << std::endl;
+  // CHECK: Main execution var = 6
+  std::cout << "Flush status " << __xray_log_flushLog() << std::endl;
+  // CHECK: Flush status {{.*}}
+  __xray_unpatch();
+  return 0;
+}
+
+// Check that we're able to see two threads, each entering and exiting fA().
+// TRACE-DAG: - { type: 0, func-id: [[FIDA:[0-9]+]], function: {{.*fA.*}}, cpu: {{.*}}, thread: [[THREAD1:[0-9]+]], process: [[PROCESS:[0-9]+]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDA]], function: {{.*fA.*}}, cpu: {{.*}}, thread: [[THREAD1]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+// TRACE-DAG: - { type: 0, func-id: [[FIDA]], function: {{.*fA.*}}, cpu: {{.*}}, thread: [[THREAD2:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDA]], function: {{.*fA.*}}, cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+//
+// Do the same as above for fC()
+// TRACE-DAG: - { type: 0, func-id: [[FIDC:[0-9]+]], function: {{.*fC.*}}, cpu: {{.*}}, thread: [[THREAD1:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDC]], function: {{.*fC.*}}, cpu: {{.*}}, thread: [[THREAD1]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+// TRACE-DAG: - { type: 0, func-id: [[FIDC]], function: {{.*fC.*}}, cpu: {{.*}}, thread: [[THREAD2:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDC]], function: {{.*fC.*}}, cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+
+// Do the same as above for fB()
+// TRACE-DAG: - { type: 0, func-id: [[FIDB:[0-9]+]], function: {{.*fB.*}}, cpu: {{.*}}, thread: [[THREAD1:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDB]], function: {{.*fB.*}}, cpu: {{.*}}, thread: [[THREAD1]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+// TRACE-DAG: - { type: 0, func-id: [[FIDB]], function: {{.*fB.*}}, cpu: {{.*}}, thread: [[THREAD2:[0-9]+]], process: [[PROCESS]], kind: function-enter, tsc: {{[0-9]+}} }
+// TRACE:     - { type: 0, func-id: [[FIDB]], function: {{.*fB.*}}, cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-{{exit|tail-exit}}, tsc: {{[0-9]+}} }
+
+// TRACE-DAG: - { type: 0, func-id: [[FIDARG:[0-9]+]], function: 'fArg(int)', args: [ 1 ], cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-enter-arg, tsc: {{[0-9]+}} }
+// TRACE-DAG: - { type: 0, func-id: [[FIDARG]], function: 'fArg(int)', cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-exit, tsc: {{[0-9]+}} }
+
+// Assert that when unwriting is enabled with a high threshold time, all the function records are erased. A CPU switch could erroneously fail this test, but
+// is unlikely given the test program.
+// Even with a high threshold, arg1 logging is never unwritten.
+// UNWRITE: header:
+// UNWRITE: records:
+// UNWRITE-NEXT: - { type: 0, func-id: [[FIDARG:[0-9]+]], function: 'fArg(int)', args: [ 1 ], cpu: {{.*}}, thread: [[THREAD2:[0-9]+]], process: [[PROCESS:[0-9]+]], kind: function-enter-arg, tsc: {{[0-9]+}} }
+// UNWRITE-NEXT: - { type: 0, func-id: [[FIDARG]], function: 'fArg(int)', cpu: {{.*}}, thread: [[THREAD2]], process: [[PROCESS]], kind: function-exit, tsc: {{[0-9]+}} }
+// UNWRITE-NOT: function-enter
+// UNWRITE-NOT: function-{{exit|tail-exit}}