mirror of /home/gitosis/repositories/libev.git
*** empty log message ***
This commit is contained in:
Marc Alexander Lehmann
parent
adbc007415
commit
5fb1e7c3cc
92
ev.c
92
ev.c
|
|
@ -506,6 +506,9 @@ struct signalfd_siginfo
|
|||
#ifndef ECB_H
|
||||
#define ECB_H
|
||||
|
||||
/* 16 bits major, 16 bits minor */
|
||||
#define ECB_VERSION 0x00010001
|
||||
|
||||
#ifdef _WIN32
|
||||
typedef signed char int8_t;
|
||||
typedef unsigned char uint8_t;
|
||||
|
|
@ -520,8 +523,23 @@ struct signalfd_siginfo
|
|||
typedef signed __int64 int64_t;
|
||||
typedef unsigned __int64 uint64_t;
|
||||
#endif
|
||||
#ifdef _WIN64
|
||||
#define ECB_PTRSIZE 8
|
||||
typedef uint64_t uintptr_t;
|
||||
typedef int64_t intptr_t;
|
||||
#else
|
||||
#define ECB_PTRSIZE 4
|
||||
typedef uint32_t uintptr_t;
|
||||
typedef int32_t intptr_t;
|
||||
#endif
|
||||
typedef intptr_t ptrdiff_t;
|
||||
#else
|
||||
#include <inttypes.h>
|
||||
#if UINTMAX_MAX > 0xffffffffU
|
||||
#define ECB_PTRSIZE 8
|
||||
#else
|
||||
#define ECB_PTRSIZE 4
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* many compilers define _GNUC_ to some versions but then only implement
|
||||
|
|
@ -539,6 +557,13 @@ struct signalfd_siginfo
|
|||
#endif
|
||||
#endif
|
||||
|
||||
#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
|
||||
#define ECB_C99 (__STDC_VERSION__ >= 199901L)
|
||||
#define ECB_C11 (__STDC_VERSION__ >= 201112L)
|
||||
#define ECB_CPP (__cplusplus+0)
|
||||
#define ECB_CPP98 (__cplusplus >= 199711L)
|
||||
#define ECB_CPP11 (__cplusplus >= 201103L)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
|
||||
|
|
@ -548,7 +573,7 @@ struct signalfd_siginfo
|
|||
# define ECB_NO_SMP 1
|
||||
#endif
|
||||
|
||||
#if ECB_NO_THREADS || ECB_NO_SMP
|
||||
#if ECB_NO_SMP
|
||||
#define ECB_MEMORY_FENCE do { } while (0)
|
||||
#endif
|
||||
|
||||
|
|
@ -556,36 +581,47 @@ struct signalfd_siginfo
|
|||
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
|
||||
#if __i386 || __i386__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
|
||||
#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
|
||||
#elif __amd64 || __amd64__ || __x86_64 || __x86_64__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
|
||||
#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
|
||||
|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
|
||||
#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
|
||||
|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
|
||||
|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
|
||||
#elif __sparc || __sparc__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
|
||||
#elif defined __s390__ || defined __s390x__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
|
||||
#elif defined __mips__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#elif defined __alpha__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
|
||||
#elif defined __hppa__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
|
||||
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
|
||||
#elif defined __ia64__
|
||||
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef ECB_MEMORY_FENCE
|
||||
#if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
|
||||
#if ECB_GCC_VERSION(4,7)
|
||||
/* see comment below about the C11 memory model. in short - avoid */
|
||||
#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
|
||||
#elif defined __clang && __has_feature (cxx_atomic)
|
||||
/* see above */
|
||||
#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
|
||||
#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
|
||||
#define ECB_MEMORY_FENCE __sync_synchronize ()
|
||||
/*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
|
||||
/*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
|
||||
|
|
@ -607,6 +643,18 @@ struct signalfd_siginfo
|
|||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef ECB_MEMORY_FENCE
|
||||
#if ECB_C11 && !defined __STDC_NO_ATOMICS__
|
||||
/* we assume that these memory fences work on all variables/all memory accesses, */
|
||||
/* not just C11 atomics and atomic accesses */
|
||||
#include <stdatomic.h>
|
||||
/* unfortunately, the C11 memory model seems to be very limited, and unable to express */
|
||||
/* simple barrier semantics. That means we need to take out thor's hammer. */
|
||||
#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef ECB_MEMORY_FENCE
|
||||
#if !ECB_AVOID_PTHREADS
|
||||
/*
|
||||
|
|
@ -635,8 +683,6 @@ struct signalfd_siginfo
|
|||
|
||||
/*****************************************************************************/
|
||||
|
||||
#define ECB_C99 (__STDC_VERSION__ >= 199901L)
|
||||
|
||||
#if __cplusplus
|
||||
#define ecb_inline static inline
|
||||
#elif ECB_GCC_VERSION(2,5)
|
||||
|
|
@ -684,11 +730,16 @@ typedef int ecb_bool;
|
|||
#endif
|
||||
|
||||
#define ecb_noinline ecb_attribute ((__noinline__))
|
||||
#define ecb_noreturn ecb_attribute ((__noreturn__))
|
||||
#define ecb_unused ecb_attribute ((__unused__))
|
||||
#define ecb_const ecb_attribute ((__const__))
|
||||
#define ecb_pure ecb_attribute ((__pure__))
|
||||
|
||||
#if ECB_C11
|
||||
#define ecb_noreturn _Noreturn
|
||||
#else
|
||||
#define ecb_noreturn ecb_attribute ((__noreturn__))
|
||||
#endif
|
||||
|
||||
#if ECB_GCC_VERSION(4,3)
|
||||
#define ecb_artificial ecb_attribute ((__artificial__))
|
||||
#define ecb_hot ecb_attribute ((__hot__))
|
||||
|
|
@ -788,6 +839,11 @@ typedef int ecb_bool;
|
|||
}
|
||||
#endif
|
||||
|
||||
ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
|
||||
ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
|
||||
ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
|
||||
ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
|
||||
|
||||
ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
|
||||
ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue