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@ -561,7 +561,7 @@ struct signalfd_siginfo |
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#define ECB_H |
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/* 16 bits major, 16 bits minor */ |
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#define ECB_VERSION 0x00010005 |
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#define ECB_VERSION 0x00010006 |
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#ifdef _WIN32 |
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typedef signed char int8_t; |
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@ -685,6 +685,7 @@ struct signalfd_siginfo |
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#ifndef ECB_MEMORY_FENCE |
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#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
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#if __i386 || __i386__ |
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#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
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@ -744,12 +745,14 @@ struct signalfd_siginfo |
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#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
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#elif ECB_CLANG_EXTENSION(c_atomic) |
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/* see comment below (stdatomic.h) about the C11 memory model. */ |
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#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
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#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
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#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
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#define ECB_MEMORY_FENCE __sync_synchronize () |
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@ -769,9 +772,10 @@ struct signalfd_siginfo |
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#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
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#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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#include <mbarrier.h> |
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#define ECB_MEMORY_FENCE __machine_rw_barrier () |
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#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
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#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
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#define ECB_MEMORY_FENCE __machine_rw_barrier () |
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#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
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#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
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#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier () |
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#elif __xlC__ |
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#define ECB_MEMORY_FENCE __sync () |
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#endif |
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@ -782,15 +786,9 @@ struct signalfd_siginfo |
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/* we assume that these memory fences work on all variables/all memory accesses, */ |
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/* not just C11 atomics and atomic accesses */ |
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#include <stdatomic.h> |
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/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
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/* any fence other than seq_cst, which isn't very efficient for us. */ |
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/* Why that is, we don't know - either the C11 memory model is quite useless */ |
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/* for most usages, or gcc and clang have a bug */ |
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/* I *currently* lean towards the latter, and inefficiently implement */ |
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/* all three of ecb's fences as a seq_cst fence */ |
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/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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/* for all __atomic_thread_fence's except seq_cst */ |
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#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
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#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
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#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
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#endif |
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#endif |
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@ -820,6 +818,10 @@ struct signalfd_siginfo |
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#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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#endif |
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#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
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#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
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#endif |
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/*****************************************************************************/ |
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#if ECB_CPP |
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