652 lines
15 KiB
C
652 lines
15 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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#define atomic_read_uint64(p) atomic_add_uint64(p, 0)
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#define atomic_read_uint32(p) atomic_add_uint32(p, 0)
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#define atomic_read_p(p) atomic_add_p(p, NULL)
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#define atomic_read_z(p) atomic_add_z(p, 0)
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#define atomic_read_u(p) atomic_add_u(p, 0)
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#endif /* JEMALLOC_H_EXTERNS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_INLINES
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/*
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* All arithmetic functions return the arithmetic result of the atomic
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* operation. Some atomic operation APIs return the value prior to mutation, in
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* which case the following functions must redundantly compute the result so
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* that it can be returned. These functions are normally inlined, so the extra
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* operations can be optimized away if the return values aren't used by the
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* callers.
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*
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* <t> atomic_read_<t>(<t> *p) { return (*p); }
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* <t> atomic_add_<t>(<t> *p, <t> x) { return (*p += x); }
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* <t> atomic_sub_<t>(<t> *p, <t> x) { return (*p -= x); }
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* bool atomic_cas_<t>(<t> *p, <t> c, <t> s)
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* {
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* if (*p != c)
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* return (true);
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* *p = s;
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* return (false);
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* }
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* void atomic_write_<t>(<t> *p, <t> x) { *p = x; }
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*/
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#ifndef JEMALLOC_ENABLE_INLINE
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uint64_t atomic_add_uint64(uint64_t *p, uint64_t x);
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uint64_t atomic_sub_uint64(uint64_t *p, uint64_t x);
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bool atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s);
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void atomic_write_uint64(uint64_t *p, uint64_t x);
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uint32_t atomic_add_uint32(uint32_t *p, uint32_t x);
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uint32_t atomic_sub_uint32(uint32_t *p, uint32_t x);
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bool atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s);
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void atomic_write_uint32(uint32_t *p, uint32_t x);
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void *atomic_add_p(void **p, void *x);
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void *atomic_sub_p(void **p, void *x);
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bool atomic_cas_p(void **p, void *c, void *s);
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void atomic_write_p(void **p, const void *x);
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size_t atomic_add_z(size_t *p, size_t x);
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size_t atomic_sub_z(size_t *p, size_t x);
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bool atomic_cas_z(size_t *p, size_t c, size_t s);
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void atomic_write_z(size_t *p, size_t x);
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unsigned atomic_add_u(unsigned *p, unsigned x);
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unsigned atomic_sub_u(unsigned *p, unsigned x);
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bool atomic_cas_u(unsigned *p, unsigned c, unsigned s);
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void atomic_write_u(unsigned *p, unsigned x);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_ATOMIC_C_))
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/******************************************************************************/
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/* 64-bit operations. */
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#if (LG_SIZEOF_PTR == 3 || LG_SIZEOF_INT == 3)
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# if (defined(__amd64__) || defined(__x86_64__))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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uint64_t t = x;
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asm volatile (
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"lock; xaddq %0, %1;"
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: "+r" (t), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (t + x);
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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uint64_t t;
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x = (uint64_t)(-(int64_t)x);
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t = x;
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asm volatile (
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"lock; xaddq %0, %1;"
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: "+r" (t), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (t + x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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uint8_t success;
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asm volatile (
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"lock; cmpxchgq %4, %0;"
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"sete %1;"
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: "=m" (*p), "=a" (success) /* Outputs. */
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: "m" (*p), "a" (c), "r" (s) /* Inputs. */
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: "memory" /* Clobbers. */
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);
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return (!(bool)success);
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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asm volatile (
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"xchgq %1, %0;" /* Lock is implied by xchgq. */
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: "=m" (*p), "+r" (x) /* Outputs. */
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: "m" (*p) /* Inputs. */
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: "memory" /* Clobbers. */
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);
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}
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# elif (defined(JEMALLOC_C11ATOMICS))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
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return (atomic_fetch_add(a, x) + x);
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
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return (atomic_fetch_sub(a, x) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
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return (!atomic_compare_exchange_strong(a, &c, s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
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atomic_store(a, x);
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}
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# elif (defined(JEMALLOC_ATOMIC9))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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/*
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* atomic_fetchadd_64() doesn't exist, but we only ever use this
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* function on LP64 systems, so atomic_fetchadd_long() will do.
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*/
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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return (atomic_fetchadd_long(p, (unsigned long)x) + x);
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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return (atomic_fetchadd_long(p, (unsigned long)(-(long)x)) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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return (!atomic_cmpset_long(p, (unsigned long)c, (unsigned long)s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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atomic_store_rel_long(p, x);
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}
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# elif (defined(JEMALLOC_OSATOMIC))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (OSAtomicAdd64((int64_t)x, (int64_t *)p));
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p));
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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return (!OSAtomicCompareAndSwap64(c, s, (int64_t *)p));
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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uint64_t o;
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/*The documented OSAtomic*() API does not expose an atomic exchange. */
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do {
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o = atomic_read_uint64(p);
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} while (atomic_cas_uint64(p, o, x));
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}
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# elif (defined(_MSC_VER))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (InterlockedExchangeAdd64(p, x) + x);
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (InterlockedExchangeAdd64(p, -((int64_t)x)) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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uint64_t o;
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o = InterlockedCompareExchange64(p, s, c);
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return (o != c);
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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InterlockedExchange64(p, x);
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}
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# elif (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) || \
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defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_8))
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JEMALLOC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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JEMALLOC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint64(uint64_t *p, uint64_t c, uint64_t s)
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{
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return (!__sync_bool_compare_and_swap(p, c, s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint64(uint64_t *p, uint64_t x)
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{
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__sync_lock_test_and_set(p, x);
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}
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# else
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# error "Missing implementation for 64-bit atomic operations"
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# endif
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#endif
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/******************************************************************************/
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/* 32-bit operations. */
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#if (defined(__i386__) || defined(__amd64__) || defined(__x86_64__))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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uint32_t t = x;
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asm volatile (
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"lock; xaddl %0, %1;"
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: "+r" (t), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (t + x);
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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uint32_t t;
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x = (uint32_t)(-(int32_t)x);
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t = x;
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asm volatile (
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"lock; xaddl %0, %1;"
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: "+r" (t), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (t + x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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uint8_t success;
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asm volatile (
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"lock; cmpxchgl %4, %0;"
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"sete %1;"
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: "=m" (*p), "=a" (success) /* Outputs. */
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: "m" (*p), "a" (c), "r" (s) /* Inputs. */
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: "memory"
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);
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return (!(bool)success);
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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asm volatile (
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"xchgl %1, %0;" /* Lock is implied by xchgl. */
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: "=m" (*p), "+r" (x) /* Outputs. */
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: "m" (*p) /* Inputs. */
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: "memory" /* Clobbers. */
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);
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}
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# elif (defined(JEMALLOC_C11ATOMICS))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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volatile atomic_uint_least32_t *a = (volatile atomic_uint_least32_t *)p;
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return (atomic_fetch_add(a, x) + x);
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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volatile atomic_uint_least32_t *a = (volatile atomic_uint_least32_t *)p;
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return (atomic_fetch_sub(a, x) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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volatile atomic_uint_least32_t *a = (volatile atomic_uint_least32_t *)p;
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return (!atomic_compare_exchange_strong(a, &c, s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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volatile atomic_uint_least32_t *a = (volatile atomic_uint_least32_t *)p;
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atomic_store(a, x);
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}
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#elif (defined(JEMALLOC_ATOMIC9))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (atomic_fetchadd_32(p, x) + x);
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (atomic_fetchadd_32(p, (uint32_t)(-(int32_t)x)) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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return (!atomic_cmpset_32(p, c, s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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atomic_store_rel_32(p, x);
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}
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#elif (defined(JEMALLOC_OSATOMIC))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (OSAtomicAdd32((int32_t)x, (int32_t *)p));
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p));
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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return (!OSAtomicCompareAndSwap32(c, s, (int32_t *)p));
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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uint32_t o;
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/*The documented OSAtomic*() API does not expose an atomic exchange. */
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do {
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o = atomic_read_uint32(p);
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} while (atomic_cas_uint32(p, o, x));
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}
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#elif (defined(_MSC_VER))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (InterlockedExchangeAdd(p, x) + x);
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (InterlockedExchangeAdd(p, -((int32_t)x)) - x);
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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uint32_t o;
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o = InterlockedCompareExchange(p, s, c);
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return (o != c);
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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InterlockedExchange(p, x);
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}
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#elif (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) || \
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defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_4))
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JEMALLOC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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JEMALLOC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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JEMALLOC_INLINE bool
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atomic_cas_uint32(uint32_t *p, uint32_t c, uint32_t s)
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{
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return (!__sync_bool_compare_and_swap(p, c, s));
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}
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JEMALLOC_INLINE void
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atomic_write_uint32(uint32_t *p, uint32_t x)
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{
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__sync_lock_test_and_set(p, x);
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}
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#else
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# error "Missing implementation for 32-bit atomic operations"
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#endif
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/******************************************************************************/
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/* Pointer operations. */
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JEMALLOC_INLINE void *
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atomic_add_p(void **p, void *x)
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{
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#if (LG_SIZEOF_PTR == 3)
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return ((void *)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
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#elif (LG_SIZEOF_PTR == 2)
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return ((void *)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
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#endif
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}
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JEMALLOC_INLINE void *
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atomic_sub_p(void **p, void *x)
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{
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#if (LG_SIZEOF_PTR == 3)
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return ((void *)atomic_add_uint64((uint64_t *)p,
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(uint64_t)-((int64_t)x)));
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#elif (LG_SIZEOF_PTR == 2)
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return ((void *)atomic_add_uint32((uint32_t *)p,
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(uint32_t)-((int32_t)x)));
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#endif
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}
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JEMALLOC_INLINE bool
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atomic_cas_p(void **p, void *c, void *s)
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{
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#if (LG_SIZEOF_PTR == 3)
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return (atomic_cas_uint64((uint64_t *)p, (uint64_t)c, (uint64_t)s));
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#elif (LG_SIZEOF_PTR == 2)
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return (atomic_cas_uint32((uint32_t *)p, (uint32_t)c, (uint32_t)s));
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#endif
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}
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JEMALLOC_INLINE void
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atomic_write_p(void **p, const void *x)
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{
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#if (LG_SIZEOF_PTR == 3)
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atomic_write_uint64((uint64_t *)p, (uint64_t)x);
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#elif (LG_SIZEOF_PTR == 2)
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atomic_write_uint32((uint32_t *)p, (uint32_t)x);
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#endif
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}
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/******************************************************************************/
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/* size_t operations. */
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JEMALLOC_INLINE size_t
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atomic_add_z(size_t *p, size_t x)
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{
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#if (LG_SIZEOF_PTR == 3)
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return ((size_t)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
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#elif (LG_SIZEOF_PTR == 2)
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return ((size_t)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
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#endif
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}
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JEMALLOC_INLINE size_t
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atomic_sub_z(size_t *p, size_t x)
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{
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#if (LG_SIZEOF_PTR == 3)
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return ((size_t)atomic_add_uint64((uint64_t *)p,
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(uint64_t)-((int64_t)x)));
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#elif (LG_SIZEOF_PTR == 2)
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return ((size_t)atomic_add_uint32((uint32_t *)p,
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(uint32_t)-((int32_t)x)));
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#endif
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}
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JEMALLOC_INLINE bool
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atomic_cas_z(size_t *p, size_t c, size_t s)
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{
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#if (LG_SIZEOF_PTR == 3)
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return (atomic_cas_uint64((uint64_t *)p, (uint64_t)c, (uint64_t)s));
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#elif (LG_SIZEOF_PTR == 2)
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return (atomic_cas_uint32((uint32_t *)p, (uint32_t)c, (uint32_t)s));
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#endif
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}
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JEMALLOC_INLINE void
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atomic_write_z(size_t *p, size_t x)
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{
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#if (LG_SIZEOF_PTR == 3)
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atomic_write_uint64((uint64_t *)p, (uint64_t)x);
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#elif (LG_SIZEOF_PTR == 2)
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atomic_write_uint32((uint32_t *)p, (uint32_t)x);
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#endif
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}
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/******************************************************************************/
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/* unsigned operations. */
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JEMALLOC_INLINE unsigned
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atomic_add_u(unsigned *p, unsigned x)
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{
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|
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#if (LG_SIZEOF_INT == 3)
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return ((unsigned)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
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#elif (LG_SIZEOF_INT == 2)
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return ((unsigned)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
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#endif
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}
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JEMALLOC_INLINE unsigned
|
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atomic_sub_u(unsigned *p, unsigned x)
|
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{
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|
|
|
#if (LG_SIZEOF_INT == 3)
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return ((unsigned)atomic_add_uint64((uint64_t *)p,
|
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(uint64_t)-((int64_t)x)));
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#elif (LG_SIZEOF_INT == 2)
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return ((unsigned)atomic_add_uint32((uint32_t *)p,
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(uint32_t)-((int32_t)x)));
|
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#endif
|
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}
|
|
|
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JEMALLOC_INLINE bool
|
|
atomic_cas_u(unsigned *p, unsigned c, unsigned s)
|
|
{
|
|
|
|
#if (LG_SIZEOF_INT == 3)
|
|
return (atomic_cas_uint64((uint64_t *)p, (uint64_t)c, (uint64_t)s));
|
|
#elif (LG_SIZEOF_INT == 2)
|
|
return (atomic_cas_uint32((uint32_t *)p, (uint32_t)c, (uint32_t)s));
|
|
#endif
|
|
}
|
|
|
|
JEMALLOC_INLINE void
|
|
atomic_write_u(unsigned *p, unsigned x)
|
|
{
|
|
|
|
#if (LG_SIZEOF_INT == 3)
|
|
atomic_write_uint64((uint64_t *)p, (uint64_t)x);
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|
#elif (LG_SIZEOF_INT == 2)
|
|
atomic_write_uint32((uint32_t *)p, (uint32_t)x);
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|
#endif
|
|
}
|
|
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/******************************************************************************/
|
|
#endif
|
|
|
|
#endif /* JEMALLOC_H_INLINES */
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|
/******************************************************************************/
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