diff options
author | Chris Robinson <[email protected]> | 2023-05-04 11:39:13 -0700 |
---|---|---|
committer | Chris Robinson <[email protected]> | 2023-05-04 11:39:13 -0700 |
commit | 7cbf3ba2e2bab5c3aecb001e1d387c89309dbec4 (patch) | |
tree | 6fae4aae25d87e7435b2f0b0936b822360851c9b /common/ringbuffer.cpp | |
parent | 6e0a0a2692a4303d6410c24bf83e09ca47ac6759 (diff) |
Use std::byte instead of a custom al::byte
Diffstat (limited to 'common/ringbuffer.cpp')
-rw-r--r-- | common/ringbuffer.cpp | 85 |
1 files changed, 42 insertions, 43 deletions
diff --git a/common/ringbuffer.cpp b/common/ringbuffer.cpp index 0aec1d49..af1f3669 100644 --- a/common/ringbuffer.cpp +++ b/common/ringbuffer.cpp @@ -29,9 +29,9 @@ #include "almalloc.h" -RingBufferPtr RingBuffer::Create(size_t sz, size_t elem_sz, int limit_writes) +RingBufferPtr RingBuffer::Create(std::size_t sz, std::size_t elem_sz, int limit_writes) { - size_t power_of_two{0u}; + std::size_t power_of_two{0u}; if(sz > 0) { power_of_two = sz; @@ -40,15 +40,14 @@ RingBufferPtr RingBuffer::Create(size_t sz, size_t elem_sz, int limit_writes) power_of_two |= power_of_two>>4; power_of_two |= power_of_two>>8; power_of_two |= power_of_two>>16; -#if SIZE_MAX > UINT_MAX - power_of_two |= power_of_two>>32; -#endif + if constexpr(SIZE_MAX > UINT_MAX) + power_of_two |= power_of_two>>32; } ++power_of_two; - if(power_of_two <= sz || power_of_two > std::numeric_limits<size_t>::max()/elem_sz) + if(power_of_two <= sz || power_of_two > std::numeric_limits<std::size_t>::max()/elem_sz) throw std::overflow_error{"Ring buffer size overflow"}; - const size_t bufbytes{power_of_two * elem_sz}; + const std::size_t bufbytes{power_of_two * elem_sz}; RingBufferPtr rb{new(FamCount(bufbytes)) RingBuffer{bufbytes}}; rb->mWriteSize = limit_writes ? sz : (power_of_two-1); rb->mSizeMask = power_of_two - 1; @@ -61,20 +60,20 @@ void RingBuffer::reset() noexcept { mWritePtr.store(0, std::memory_order_relaxed); mReadPtr.store(0, std::memory_order_relaxed); - std::fill_n(mBuffer.begin(), (mSizeMask+1)*mElemSize, al::byte{}); + std::fill_n(mBuffer.begin(), (mSizeMask+1)*mElemSize, std::byte{}); } -size_t RingBuffer::read(void *dest, size_t cnt) noexcept +std::size_t RingBuffer::read(void *dest, std::size_t cnt) noexcept { - const size_t free_cnt{readSpace()}; + const std::size_t free_cnt{readSpace()}; if(free_cnt == 0) return 0; - const size_t to_read{std::min(cnt, free_cnt)}; - size_t read_ptr{mReadPtr.load(std::memory_order_relaxed) & mSizeMask}; + const std::size_t to_read{std::min(cnt, free_cnt)}; + std::size_t read_ptr{mReadPtr.load(std::memory_order_relaxed) & mSizeMask}; - size_t n1, n2; - const size_t cnt2{read_ptr + to_read}; + std::size_t n1, n2; + const std::size_t cnt2{read_ptr + to_read}; if(cnt2 > mSizeMask+1) { n1 = mSizeMask+1 - read_ptr; @@ -87,7 +86,7 @@ size_t RingBuffer::read(void *dest, size_t cnt) noexcept } auto outiter = std::copy_n(mBuffer.begin() + read_ptr*mElemSize, n1*mElemSize, - static_cast<al::byte*>(dest)); + static_cast<std::byte*>(dest)); read_ptr += n1; if(n2 > 0) { @@ -98,16 +97,16 @@ size_t RingBuffer::read(void *dest, size_t cnt) noexcept return to_read; } -size_t RingBuffer::peek(void *dest, size_t cnt) const noexcept +std::size_t RingBuffer::peek(void *dest, std::size_t cnt) const noexcept { - const size_t free_cnt{readSpace()}; + const std::size_t free_cnt{readSpace()}; if(free_cnt == 0) return 0; - const size_t to_read{std::min(cnt, free_cnt)}; - size_t read_ptr{mReadPtr.load(std::memory_order_relaxed) & mSizeMask}; + const std::size_t to_read{std::min(cnt, free_cnt)}; + std::size_t read_ptr{mReadPtr.load(std::memory_order_relaxed) & mSizeMask}; - size_t n1, n2; - const size_t cnt2{read_ptr + to_read}; + std::size_t n1, n2; + const std::size_t cnt2{read_ptr + to_read}; if(cnt2 > mSizeMask+1) { n1 = mSizeMask+1 - read_ptr; @@ -120,22 +119,22 @@ size_t RingBuffer::peek(void *dest, size_t cnt) const noexcept } auto outiter = std::copy_n(mBuffer.begin() + read_ptr*mElemSize, n1*mElemSize, - static_cast<al::byte*>(dest)); + static_cast<std::byte*>(dest)); if(n2 > 0) std::copy_n(mBuffer.begin(), n2*mElemSize, outiter); return to_read; } -size_t RingBuffer::write(const void *src, size_t cnt) noexcept +std::size_t RingBuffer::write(const void *src, std::size_t cnt) noexcept { - const size_t free_cnt{writeSpace()}; + const std::size_t free_cnt{writeSpace()}; if(free_cnt == 0) return 0; - const size_t to_write{std::min(cnt, free_cnt)}; - size_t write_ptr{mWritePtr.load(std::memory_order_relaxed) & mSizeMask}; + const std::size_t to_write{std::min(cnt, free_cnt)}; + std::size_t write_ptr{mWritePtr.load(std::memory_order_relaxed) & mSizeMask}; - size_t n1, n2; - const size_t cnt2{write_ptr + to_write}; + std::size_t n1, n2; + const std::size_t cnt2{write_ptr + to_write}; if(cnt2 > mSizeMask+1) { n1 = mSizeMask+1 - write_ptr; @@ -147,7 +146,7 @@ size_t RingBuffer::write(const void *src, size_t cnt) noexcept n2 = 0; } - auto srcbytes = static_cast<const al::byte*>(src); + auto srcbytes = static_cast<const std::byte*>(src); std::copy_n(srcbytes, n1*mElemSize, mBuffer.begin() + write_ptr*mElemSize); write_ptr += n1; if(n2 > 0) @@ -164,26 +163,26 @@ auto RingBuffer::getReadVector() const noexcept -> DataPair { DataPair ret; - size_t w{mWritePtr.load(std::memory_order_acquire)}; - size_t r{mReadPtr.load(std::memory_order_acquire)}; + std::size_t w{mWritePtr.load(std::memory_order_acquire)}; + std::size_t r{mReadPtr.load(std::memory_order_acquire)}; w &= mSizeMask; r &= mSizeMask; - const size_t free_cnt{(w-r) & mSizeMask}; + const std::size_t free_cnt{(w-r) & mSizeMask}; - const size_t cnt2{r + free_cnt}; + const std::size_t cnt2{r + free_cnt}; if(cnt2 > mSizeMask+1) { /* Two part vector: the rest of the buffer after the current read ptr, * plus some from the start of the buffer. */ - ret.first.buf = const_cast<al::byte*>(mBuffer.data() + r*mElemSize); + ret.first.buf = const_cast<std::byte*>(mBuffer.data() + r*mElemSize); ret.first.len = mSizeMask+1 - r; - ret.second.buf = const_cast<al::byte*>(mBuffer.data()); + ret.second.buf = const_cast<std::byte*>(mBuffer.data()); ret.second.len = cnt2 & mSizeMask; } else { /* Single part vector: just the rest of the buffer */ - ret.first.buf = const_cast<al::byte*>(mBuffer.data() + r*mElemSize); + ret.first.buf = const_cast<std::byte*>(mBuffer.data() + r*mElemSize); ret.first.len = free_cnt; ret.second.buf = nullptr; ret.second.len = 0; @@ -196,25 +195,25 @@ auto RingBuffer::getWriteVector() const noexcept -> DataPair { DataPair ret; - size_t w{mWritePtr.load(std::memory_order_acquire)}; - size_t r{mReadPtr.load(std::memory_order_acquire) + mWriteSize - mSizeMask}; + std::size_t w{mWritePtr.load(std::memory_order_acquire)}; + std::size_t r{mReadPtr.load(std::memory_order_acquire) + mWriteSize - mSizeMask}; w &= mSizeMask; r &= mSizeMask; - const size_t free_cnt{(r-w-1) & mSizeMask}; + const std::size_t free_cnt{(r-w-1) & mSizeMask}; - const size_t cnt2{w + free_cnt}; + const std::size_t cnt2{w + free_cnt}; if(cnt2 > mSizeMask+1) { /* Two part vector: the rest of the buffer after the current write ptr, * plus some from the start of the buffer. */ - ret.first.buf = const_cast<al::byte*>(mBuffer.data() + w*mElemSize); + ret.first.buf = const_cast<std::byte*>(mBuffer.data() + w*mElemSize); ret.first.len = mSizeMask+1 - w; - ret.second.buf = const_cast<al::byte*>(mBuffer.data()); + ret.second.buf = const_cast<std::byte*>(mBuffer.data()); ret.second.len = cnt2 & mSizeMask; } else { - ret.first.buf = const_cast<al::byte*>(mBuffer.data() + w*mElemSize); + ret.first.buf = const_cast<std::byte*>(mBuffer.data() + w*mElemSize); ret.first.len = free_cnt; ret.second.buf = nullptr; ret.second.len = 0; |