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Merge pull request #102 from google/fix-macros

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Fix and improve BENCHMARK macros.
This commit is contained in:
Eric 2015-03-27 15:55:01 -04:00
parent 2a7b7e4b99 75712367c1
commit 0a0bb8feb1
1 changed files with 27 additions and 17 deletions
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44
include/benchmark/benchmark_api.h
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@ -421,14 +421,27 @@ class Benchmark {
// ------------------------------------------------------
// Macro to register benchmarks
// Helpers for generating unique variable names
#define BENCHMARK_CONCAT(a, b, c) BENCHMARK_CONCAT2(a, b, c)
#define BENCHMARK_CONCAT2(a, b, c) a##b##c
// Check that __COUNTER__ is defined and that __COUNTER__ increases by 1
// every time it is expanded. X + 1 == X + 0 is used in case X is defined to be
// empty. If X is empty the expression becomes (+1 == +0).
#if defined(__COUNTER__) && (__COUNTER__ + 1 == __COUNTER__ + 0)
#define BENCHMARK_PRIVATE_UNIQUE_ID __COUNTER__
#else
#define BENCHMARK_PRIVATE_UNIQUE_ID __LINE__
#endif
#define BENCHMARK(n) \
static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
_benchmark_, n, __LINE__) BENCHMARK_UNUSED = \
(new ::benchmark::internal::Benchmark(#n, n))
// Helpers for generating unique variable names
#define BENCHMARK_PRIVATE_NAME(n) \
BENCHMARK_PRIVATE_CONCAT(_benchmark_, BENCHMARK_PRIVATE_UNIQUE_ID, n)
#define BENCHMARK_PRIVATE_CONCAT(a, b, c) BENCHMARK_PRIVATE_CONCAT2(a, b, c)
#define BENCHMARK_PRIVATE_CONCAT2(a, b, c) a##b##c
#define BENCHMARK_PRIVATE_DECLARE(n) \
static ::benchmark::internal::Benchmark* \
BENCHMARK_PRIVATE_NAME(n) BENCHMARK_UNUSED
#define BENCHMARK(n) \
BENCHMARK_PRIVATE_DECLARE(n) = (new ::benchmark::internal::Benchmark(#n, n))
// Old-style macros
#define BENCHMARK_WITH_ARG(n, a) BENCHMARK(n)->Arg((a))
@ -445,21 +458,18 @@ class Benchmark {
// BENCHMARK_TEMPLATE(BM_Foo, 1);
//
// will register BM_Foo<1> as a benchmark.
#define BENCHMARK_TEMPLATE1(n, a) \
static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
_benchmark_, n, __LINE__) BENCHMARK_UNUSED = \
#define BENCHMARK_TEMPLATE1(n, a) \
BENCHMARK_PRIVATE_DECLARE(n) = \
(new ::benchmark::internal::Benchmark(#n "<" #a ">", n<a>))
#define BENCHMARK_TEMPLATE2(n, a, b) \
static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
_benchmark_, n, __LINE__) BENCHMARK_UNUSED = \
#define BENCHMARK_TEMPLATE2(n, a, b) \
BENCHMARK_PRIVATE_DECLARE(n) = \
(new ::benchmark::internal::Benchmark(#n "<" #a "," #b ">", n<a, b>))
#if __cplusplus >= 201103L
#define BENCHMARK_TEMPLATE(n, ...) \
static ::benchmark::internal::Benchmark* BENCHMARK_CONCAT( \
_benchmark_, n, __LINE__) BENCHMARK_UNUSED = \
(new ::benchmark::internal::Benchmark( \
#define BENCHMARK_TEMPLATE(n, ...) \
BENCHMARK_PRIVATE_DECLARE(n) = \
(new ::benchmark::internal::Benchmark( \
#n "<" #__VA_ARGS__ ">", n<__VA_ARGS__>))
#else
#define BENCHMARK_TEMPLATE(n, a) BENCHMARK_TEMPLATE1(n, a)