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add IPC_FALLTHROUGH_([[fallthrough]])

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This commit is contained in:
zhangyi 2019-06-18 12:24:40 +08:00
parent 30fa347f56
commit ba5c8f57cf
3 changed files with 21 additions and 15 deletions
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2
src/ipc.cpp
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@ -43,7 +43,7 @@ struct msg_t<0, AlignSize> {
template <std::size_t DataSize, std::size_t AlignSize>
struct msg_t {
msg_t<0, AlignSize> head_ {};
msg_t<0, AlignSize> head_ { 0, 0, 0, false };
std::aligned_storage_t<DataSize, AlignSize> data_ {};
msg_t() = default;

24
src/platform/detail.h
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@ -17,10 +17,21 @@
#ifdef IPC_UNUSED_
# error "IPC_UNUSED_ has been defined."
#endif
#ifdef IPC_FALLTHROUGH_
# error "IPC_FALLTHROUGH_ has been defined."
#endif
#ifdef IPC_STBIND_
# error "IPC_STBIND_ has been defined."
#endif
#if __cplusplus >= 201703L
#define IPC_UNUSED_ [[maybe_unused]]
#define IPC_FALLTHROUGH_ [[fallthrough]]
#define IPC_STBIND_(A, B, ...) auto [A, B] = __VA_ARGS__
#else /*__cplusplus < 201703L*/
#if defined(_MSC_VER)
# define IPC_UNUSED_ __pragma(warning(suppress: 4100 4101 4189))
#elif defined(__GNUC__)
@ -28,19 +39,14 @@
#else
# define IPC_UNUSED_
#endif
#endif/*__cplusplus < 201703L*/
#ifdef IPC_STBIND_
# error "IPC_STBIND_ has been defined."
#endif
#define IPC_FALLTHROUGH_
#if __cplusplus >= 201703L
# define IPC_STBIND_(A, B, ...) auto [A, B] = __VA_ARGS__
#else /*__cplusplus < 201703L*/
#define IPC_STBIND_(A, B, ...) \
auto tp___ = __VA_ARGS__ \
auto A = std::get<0>(tp); \
auto B = std::get<1>(tp)
auto A = std::get<0>(tp___); \
auto B = std::get<1>(tp___)
#endif/*__cplusplus < 201703L*/
#if __cplusplus >= 201703L

4
src/prod_cons.h
View File

@ -6,7 +6,7 @@
#include <type_traits>
#include "def.h"
#include "platform/detail.h"
#include "circ/elem_def.h"
namespace ipc {
@ -363,7 +363,7 @@ struct prod_cons_impl<wr<relat::multi , relat::multi, trans::broadcast>> {
return true;
case 1:
el->f_ct_.store(cur + N - 1, std::memory_order_release);
[[fallthrough]];
IPC_FALLTHROUGH_;
default:
if (el->rc_.compare_exchange_weak(
cur_rc, cur_rc + rc_incr - 1, std::memory_order_release)) {