83c55fe5da
Don't store the sizeclass, as we can find it easily, and already are going to touch though cache lines in the common case.
47 lines
833 B
C++
47 lines
833 B
C++
#pragma once
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#include "../ds/mpscq.h"
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#include "../mem/allocconfig.h"
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#include "../mem/sizeclass.h"
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#include <atomic>
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namespace snmalloc
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{
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struct Remote
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{
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using alloc_id_t = size_t;
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union
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{
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std::atomic<Remote*> next;
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Remote* non_atomic_next;
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};
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alloc_id_t allocator_id;
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void set_target_id(alloc_id_t id)
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{
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allocator_id = id;
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}
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alloc_id_t target_id()
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{
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return allocator_id;
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}
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};
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struct RemoteAllocator
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{
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using alloc_id_t = Remote::alloc_id_t;
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// Store the message queue on a separate cacheline. It is mutable data that
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// is read by other threads.
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alignas(CACHELINE_SIZE) MPSCQ<Remote> message_queue;
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alloc_id_t id()
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{
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return static_cast<alloc_id_t>(
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reinterpret_cast<uintptr_t>(&message_queue));
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}
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};
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}
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