1// RUN: %clangxx_xray -g -std=c++11 %s -o %t -fxray-modes=xray-fdr
2// RUN: rm -f fdr-inmemory-test-*
3// RUN: XRAY_OPTIONS="patch_premain=false xray_logfile_base=fdr-inmemory-test- \
4// RUN: verbosity=1" \
5// RUN: XRAY_FDR_OPTIONS="no_file_flush=true func_duration_threshold_us=0" \
6// RUN: %run %t 2>&1 | FileCheck %s
7// RUN: FILES=`find %T -name 'fdr-inmemory-test-*' | wc -l`
8// RUN: [ $FILES -eq 0 ]
9// RUN: rm -f fdr-inmemory-test-*
10//
11// REQUIRES: built-in-llvm-tree
12
13#include "xray/xray_log_interface.h"
14#include <cassert>
15#include <iostream>
16
17uint64_t var = 0;
18uint64_t buffers = 0;
19[[clang::xray_always_instrument]] void __attribute__((noinline)) f() { ++var; }
20
21int main(int argc, char *argv[]) {
22 assert(__xray_log_select_mode("xray-fdr") ==
23 XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
24 auto status = __xray_log_init_mode(
25 Mode: "xray-fdr",
26 Config: "buffer_size=4096:buffer_max=10:func_duration_threshold_us=0");
27 assert(status == XRayLogInitStatus::XRAY_LOG_INITIALIZED);
28 __xray_patch();
29
30 // Create enough entries.
31 for (int i = 0; i != 1 << 20; ++i) {
32 f();
33 }
34
35 // Then we want to verify that we're getting 10 buffers outside of the initial
36 // header.
37 auto finalize_status = __xray_log_finalize();
38 assert(finalize_status == XRayLogInitStatus::XRAY_LOG_FINALIZED);
39 auto process_status =
40 __xray_log_process_buffers(Processor: [](const char *, XRayBuffer) { ++buffers; });
41 std::cout << "buffers = " << buffers << std::endl;
42 assert(process_status == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
43 auto flush_status = __xray_log_flushLog();
44 assert(flush_status == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
45 // We expect 11 buffers because 1 header buffer + 10 actual FDR buffers.
46 // CHECK: Buffers = 11
47 std::cout << "Buffers = " << buffers << std::endl;
48
49 // In this test we ensure that we can restart the cycle after the flush.
50 status = __xray_log_init_mode(
51 Mode: "xray-fdr",
52 Config: "buffer_size=4096:buffer_max=10:func_duration_threshold_us=0");
53 assert(status == XRayLogInitStatus::XRAY_LOG_INITIALIZED);
54 __xray_patch();
55
56 // Create enough entries.
57 for (int i = 0; i != 1 << 20; ++i) {
58 f();
59 }
60
61 // Then we want to verify that we're getting 10 buffers outside of the initial
62 // header.
63 finalize_status = __xray_log_finalize();
64 assert(finalize_status == XRayLogInitStatus::XRAY_LOG_FINALIZED);
65 process_status =
66 __xray_log_process_buffers(Processor: [](const char *, XRayBuffer) { ++buffers; });
67 std::cout << "buffers = " << buffers << std::endl;
68 assert(process_status == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
69 flush_status = __xray_log_flushLog();
70 assert(flush_status == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
71 // We expect 22 buffers because 1 header buffer + 10 actual FDR buffers, plus
72 // the number of buffers we got from the previous run (also 11).
73 // CHECK: Buffers = 22
74 std::cout << "Buffers = " << buffers << std::endl;
75}
76

source code of compiler-rt/test/xray/TestCases/Posix/fdr-mode-multiple.cpp