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Merge #14715: Drop defunct prevector compat handling

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69ca48717c Implement prevector::fill once (Ben Woosley)
7bad78c2c8 Drop defunct IS_TRIVIALLY_CONSTRUCTIBLE handling from prevector.h (Ben Woosley)

Pull request description:

  This is clean-up post #14651:
  * Use one implementation of `prevector::fill`, as it's possible now that the implementations are identical.
  * Only apply the `IS_TRIVIALLY_CONSTRUCTIBLE` handling to the bench file where it is used, and drop the now-unnecessary associated compat includes.

Tree-SHA512: 5930b3a17fccd39af10add40202ad97a297aebecc049af72ca920d0d55b3e4c3c30ce864c8a683355895f0196396d4ea56ba9f9637bdc7d16964cdf66c195485
This commit is contained in:
Wladimir J. van der Laan 2018-11-22 10:48:25 +01:00
commit e736b67467
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3 changed files with 10 additions and 18 deletions
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10
src/bench/prevector.cpp
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@ -2,13 +2,21 @@
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <compat.h>
#include <prevector.h>
#include <serialize.h>
#include <streams.h>
#include <type_traits>
#include <bench/bench.h>
// GCC 4.8 is missing some C++11 type_traits,
// https://www.gnu.org/software/gcc/gcc-5/changes.html
#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 5
#define IS_TRIVIALLY_CONSTRUCTIBLE std::has_trivial_default_constructor
#else
#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivially_default_constructible
#endif
struct nontrivial_t {
int x;
nontrivial_t() :x(-1) {}

10
src/compat.h
View file

@ -10,16 +10,6 @@
#include <config/bitcoin-config.h>
#endif
#include <type_traits>
// GCC 4.8 is missing some C++11 type_traits,
// https://www.gnu.org/software/gcc/gcc-5/changes.html
#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 5
#define IS_TRIVIALLY_CONSTRUCTIBLE std::has_trivial_default_constructor
#else
#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivially_default_constructible
#endif
#ifdef WIN32
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT

8
src/prevector.h
View file

@ -15,8 +15,6 @@
#include <iterator>
#include <type_traits>
#include <compat.h>
#pragma pack(push, 1)
/** Implements a drop-in replacement for std::vector<T> which stores up to N
* elements directly (without heap allocation). The types Size and Diff are
@ -198,11 +196,7 @@ private:
T* item_ptr(difference_type pos) { return is_direct() ? direct_ptr(pos) : indirect_ptr(pos); }
const T* item_ptr(difference_type pos) const { return is_direct() ? direct_ptr(pos) : indirect_ptr(pos); }
void fill(T* dst, ptrdiff_t count) {
std::fill_n(dst, count, T{});
}
void fill(T* dst, ptrdiff_t count, const T& value) {
void fill(T* dst, ptrdiff_t count, const T& value = T{}) {
std::fill_n(dst, count, value);
}