1 #ifndef CHECK_H_
2 #define CHECK_H_
3
4 #include <cstdlib>
5 #include <ostream>
6 #include <cmath>
7
8 #include "internal_macros.h"
9 #include "log.h"
10
11 namespace benchmark {
12 namespace internal {
13
14 typedef void(AbortHandlerT)();
15
GetAbortHandler()16 inline AbortHandlerT*& GetAbortHandler() {
17 static AbortHandlerT* handler = &std::abort;
18 return handler;
19 }
20
CallAbortHandler()21 BENCHMARK_NORETURN inline void CallAbortHandler() {
22 GetAbortHandler()();
23 std::abort(); // fallback to enforce noreturn
24 }
25
26 // CheckHandler is the class constructed by failing CHECK macros. CheckHandler
27 // will log information about the failures and abort when it is destructed.
28 class CheckHandler {
29 public:
CheckHandler(const char * check,const char * file,const char * func,int line)30 CheckHandler(const char* check, const char* file, const char* func, int line)
31 : log_(GetErrorLogInstance()) {
32 log_ << file << ":" << line << ": " << func << ": Check `" << check
33 << "' failed. ";
34 }
35
GetLog()36 LogType& GetLog() { return log_; }
37
~CheckHandler()38 BENCHMARK_NORETURN ~CheckHandler() BENCHMARK_NOEXCEPT_OP(false) {
39 log_ << std::endl;
40 CallAbortHandler();
41 }
42
43 CheckHandler& operator=(const CheckHandler&) = delete;
44 CheckHandler(const CheckHandler&) = delete;
45 CheckHandler() = delete;
46
47 private:
48 LogType& log_;
49 };
50
51 } // end namespace internal
52 } // end namespace benchmark
53
54 // The CHECK macro returns a std::ostream object that can have extra information
55 // written to it.
56 #ifndef NDEBUG
57 #define CHECK(b) \
58 (b ? ::benchmark::internal::GetNullLogInstance() \
59 : ::benchmark::internal::CheckHandler(#b, __FILE__, __func__, __LINE__) \
60 .GetLog())
61 #else
62 #define CHECK(b) ::benchmark::internal::GetNullLogInstance()
63 #endif
64
65 #define CHECK_EQ(a, b) CHECK((a) == (b))
66 #define CHECK_NE(a, b) CHECK((a) != (b))
67 #define CHECK_GE(a, b) CHECK((a) >= (b))
68 #define CHECK_LE(a, b) CHECK((a) <= (b))
69 #define CHECK_GT(a, b) CHECK((a) > (b))
70 #define CHECK_LT(a, b) CHECK((a) < (b))
71
72 #define CHECK_FLOAT_EQ(a, b, eps) CHECK(std::fabs((a) - (b)) < (eps))
73 #define CHECK_FLOAT_NE(a, b, eps) CHECK(std::fabs((a) - (b)) >= (eps))
74 #define CHECK_FLOAT_GE(a, b, eps) CHECK((a) - (b) > -(eps))
75 #define CHECK_FLOAT_LE(a, b, eps) CHECK((b) - (a) > -(eps))
76 #define CHECK_FLOAT_GT(a, b, eps) CHECK((a) - (b) > (eps))
77 #define CHECK_FLOAT_LT(a, b, eps) CHECK((b) - (a) > (eps))
78
79 #endif // CHECK_H_
80