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-rw-r--r--erts/include/internal/ethread.h1653
1 files changed, 587 insertions, 1066 deletions
diff --git a/erts/include/internal/ethread.h b/erts/include/internal/ethread.h
index 4e7a38cd5c..4a205699bd 100644
--- a/erts/include/internal/ethread.h
+++ b/erts/include/internal/ethread.h
@@ -33,20 +33,9 @@
#include <stdlib.h>
#include "erl_errno.h"
-/*
- * Extra memory barrier requirements:
- * - ethr_atomic_or_old() needs to enforce a memory barrier sufficient
- * for a lock operation.
- * - ethr_atomic_and_old() needs to enforce a memory barrier sufficient
- * for an unlock operation.
- * - ethr_atomic_cmpxchg() needs to enforce a memory barrier sufficient
- * for a lock and unlock operation.
- */
-
-
-#undef ETHR_USE_RWMTX_FALLBACK
#undef ETHR_HAVE_OPTIMIZED_ATOMIC_OPS
-#undef ETHR_HAVE_OPTIMIZED_LOCKS
+#undef ETHR_HAVE_OPTIMIZED_SPINLOCK
+#undef ETHR_HAVE_OPTIMIZED_RWSPINLOCK
typedef struct {
long tv_sec;
@@ -54,6 +43,10 @@ typedef struct {
} ethr_timeval;
#if defined(DEBUG)
+# define ETHR_DEBUG
+#endif
+
+#if defined(ETHR_DEBUG)
# undef ETHR_XCHK
# define ETHR_XCHK 1
#else
@@ -68,47 +61,57 @@ typedef struct {
#elif defined(__WIN32__)
# define ETHR_INLINE __forceinline
#endif
-#if defined(DEBUG) || !defined(ETHR_INLINE) || ETHR_XCHK \
+#if defined(ETHR_DEBUG) || !defined(ETHR_INLINE) || ETHR_XCHK \
|| (defined(__GNUC__) && defined(ERTS_MIXED_CYGWIN_VC))
# undef ETHR_INLINE
# define ETHR_INLINE
# undef ETHR_TRY_INLINE_FUNCS
#endif
-#ifdef ETHR_FORCE_INLINE_FUNCS
-# define ETHR_TRY_INLINE_FUNCS
-#endif
-#if !defined(ETHR_DISABLE_NATIVE_IMPLS) \
- && (defined(PURIFY) || defined(VALGRIND) || defined(ERTS_MIXED_CYGWIN_VC))
+#if !defined(ETHR_DISABLE_NATIVE_IMPLS) && (defined(PURIFY)||defined(VALGRIND))
# define ETHR_DISABLE_NATIVE_IMPLS
#endif
-#define ETHR_RWMUTEX_INITIALIZED 0x99999999
-#define ETHR_MUTEX_INITIALIZED 0x77777777
-#define ETHR_COND_INITIALIZED 0x55555555
+/* Assume 64-byte cache line size */
+#define ETHR_CACHE_LINE_SIZE 64L
+#define ETHR_CACHE_LINE_MASK (ETHR_CACHE_LINE_SIZE - 1)
-#define ETHR_CACHE_LINE_SIZE 64
+#define ETHR_CACHE_LINE_ALIGN_SIZE(SZ) \
+ (((((SZ) - 1) / ETHR_CACHE_LINE_SIZE) + 1) * ETHR_CACHE_LINE_SIZE)
-#ifdef ETHR_INLINE_FUNC_NAME_
-# define ETHR_CUSTOM_INLINE_FUNC_NAME_
-#else
+#ifndef ETHR_INLINE_FUNC_NAME_
# define ETHR_INLINE_FUNC_NAME_(X) X
#endif
-#define ETHR_COMPILER_BARRIER ethr_compiler_barrier()
-#ifdef __GNUC__
-# undef ETHR_COMPILER_BARRIER
-# define ETHR_COMPILER_BARRIER __asm__ __volatile__("":::"memory")
+#if !defined(__func__)
+# if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
+# if !defined(__GNUC__) || __GNUC__ < 2
+# define __func__ "[unknown_function]"
+# else
+# define __func__ __FUNCTION__
+# endif
+# endif
#endif
-#ifdef DEBUG
+int ethr_assert_failed(const char *file, int line, const char *func, char *a);
+#ifdef ETHR_DEBUG
#define ETHR_ASSERT(A) \
- ((void) ((A) ? 1 : ethr_assert_failed(__FILE__, __LINE__, #A)))
-int ethr_assert_failed(char *f, int l, char *a);
+ ((void) ((A) ? 1 : ethr_assert_failed(__FILE__, __LINE__, __func__, #A)))
#else
#define ETHR_ASSERT(A) ((void) 1)
#endif
+#if defined(__GNUC__)
+# define ETHR_PROTO_NORETURN__ void __attribute__((noreturn))
+# define ETHR_IMPL_NORETURN__ void
+#elif defined(__WIN32__) && defined(_MSC_VER)
+# define ETHR_PROTO_NORETURN__ __declspec(noreturn) void
+# define ETHR_IMPL_NORETURN__ __declspec(noreturn) void
+#else
+# define ETHR_PROTO_NORETURN__ void
+# define ETHR_IMPL_NORETURN__ void
+#endif
+
#if defined(ETHR_PTHREADS)
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
* The pthread implementation *
@@ -118,7 +121,9 @@ int ethr_assert_failed(char *f, int l, char *a);
#error "_GNU_SOURCE not defined. Please, compile all files with -D_GNU_SOURCE."
#endif
-#if defined(ETHR_HAVE_MIT_PTHREAD_H)
+#if defined(ETHR_NEED_NPTL_PTHREAD_H)
+#include <nptl/pthread.h>
+#elif defined(ETHR_HAVE_MIT_PTHREAD_H)
#include <pthread/mit/pthread.h>
#elif defined(ETHR_HAVE_PTHREAD_H)
#include <pthread.h>
@@ -128,130 +133,23 @@ int ethr_assert_failed(char *f, int l, char *a);
typedef pthread_t ethr_tid;
-typedef struct ethr_mutex_ ethr_mutex;
-struct ethr_mutex_ {
- pthread_mutex_t pt_mtx;
- int is_rec_mtx;
- ethr_mutex *prev;
- ethr_mutex *next;
-#if ETHR_XCHK
- int initialized;
-#endif
-};
-
-typedef struct ethr_cond_ ethr_cond;
-struct ethr_cond_ {
- pthread_cond_t pt_cnd;
-#if ETHR_XCHK
- int initialized;
-#endif
-};
+typedef pthread_key_t ethr_tsd_key;
-#ifndef ETHR_HAVE_PTHREAD_RWLOCK_INIT
-#define ETHR_USE_RWMTX_FALLBACK
-#else
-typedef struct ethr_rwmutex_ ethr_rwmutex;
-struct ethr_rwmutex_ {
- pthread_rwlock_t pt_rwlock;
-#if ETHR_XCHK
- int initialized;
-#endif
-};
-#endif
+#define ETHR_HAVE_ETHR_SIG_FUNCS 1
-/* Static initializers */
-#if ETHR_XCHK
-#define ETHR_MUTEX_XCHK_INITER , ETHR_MUTEX_INITIALIZED
-#define ETHR_COND_XCHK_INITER , ETHR_COND_INITIALIZED
-#else
-#define ETHR_MUTEX_XCHK_INITER
-#define ETHR_COND_XCHK_INITER
+#if defined(PURIFY) || defined(VALGRIND)
+# define ETHR_FORCE_PTHREAD_RWLOCK
+# define ETHR_FORCE_PTHREAD_MUTEX
#endif
-#define ETHR_MUTEX_INITER {PTHREAD_MUTEX_INITIALIZER, 0, NULL, NULL ETHR_MUTEX_XCHK_INITER}
-#define ETHR_COND_INITER {PTHREAD_COND_INITIALIZER ETHR_COND_XCHK_INITER}
-
-#if defined(ETHR_HAVE_PTHREAD_MUTEXATTR_SETTYPE) \
- || defined(ETHR_HAVE_PTHREAD_MUTEXATTR_SETKIND_NP)
-# define ETHR_HAVE_ETHR_REC_MUTEX_INIT 1
-# ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-# define ETHR_REC_MUTEX_INITER \
- {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP, 1, NULL, NULL ETHR_MUTEX_XCHK_INITER}
-# endif
-#else
-# undef ETHR_HAVE_ETHR_REC_MUTEX_INIT
+#if !defined(ETHR_FORCE_PTHREAD_RWLOCK)
+# define ETHR_USE_OWN_RWMTX_IMPL__
#endif
-#ifndef ETHR_HAVE_PTHREAD_ATFORK
-# define ETHR_NO_FORKSAFETY 1
+#if !defined(ETHR_FORCE_PTHREAD_MUTEX) && 0
+# define ETHR_USE_OWN_MTX_IMPL__
#endif
-typedef pthread_key_t ethr_tsd_key;
-
-#define ETHR_HAVE_ETHR_SIG_FUNCS 1
-
-#ifdef ETHR_TRY_INLINE_FUNCS
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_trylock)(ethr_mutex *mtx)
-{
- return pthread_mutex_trylock(&mtx->pt_mtx);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_lock)(ethr_mutex *mtx)
-{
- return pthread_mutex_lock(&mtx->pt_mtx);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_unlock)(ethr_mutex *mtx)
-{
- return pthread_mutex_unlock(&mtx->pt_mtx);
-}
-
-#ifdef ETHR_HAVE_PTHREAD_RWLOCK_INIT
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_tryrlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_tryrdlock(&rwmtx->pt_rwlock);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_rlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_rdlock(&rwmtx->pt_rwlock);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_runlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_unlock(&rwmtx->pt_rwlock);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_tryrwlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_trywrlock(&rwmtx->pt_rwlock);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_rwlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_wrlock(&rwmtx->pt_rwlock);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_rwunlock)(ethr_rwmutex *rwmtx)
-{
- return pthread_rwlock_unlock(&rwmtx->pt_rwlock);
-}
-
-#endif /* ETHR_HAVE_PTHREAD_RWLOCK_INIT */
-
-#endif /* ETHR_TRY_INLINE_FUNCS */
-
#elif defined(ETHR_WIN32_THREADS)
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
* The native win32 threads implementation *
@@ -273,409 +171,22 @@ ETHR_INLINE_FUNC_NAME_(ethr_rwmutex_rwunlock)(ethr_rwmutex *rwmtx)
# undef WIN32_LEAN_AND_MEAN
#endif
-/* Types */
-typedef long ethr_tid; /* thread id type */
-typedef struct {
- volatile int initialized;
- CRITICAL_SECTION cs;
-#if ETHR_XCHK
- int is_rec_mtx;
-#endif
-} ethr_mutex;
-
-typedef struct cnd_wait_event__ cnd_wait_event_;
+struct ethr_join_data_;
+/* Types */
typedef struct {
- volatile int initialized;
- CRITICAL_SECTION cs;
- cnd_wait_event_ *queue;
- cnd_wait_event_ *queue_end;
-} ethr_cond;
-
-#define ETHR_USE_RWMTX_FALLBACK
-
-/* Static initializers */
-
-#define ETHR_MUTEX_INITER {0}
-#define ETHR_COND_INITER {0}
-
-#define ETHR_REC_MUTEX_INITER ETHR_MUTEX_INITER
-
-#define ETHR_HAVE_ETHR_REC_MUTEX_INIT 1
+ long id;
+ struct ethr_join_data_ *jdata;
+} ethr_tid; /* thread id type */
typedef DWORD ethr_tsd_key;
#undef ETHR_HAVE_ETHR_SIG_FUNCS
-#ifdef ETHR_TRY_INLINE_FUNCS
-int ethr_fake_static_mutex_init(ethr_mutex *mtx);
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_trylock)(ethr_mutex *mtx)
-{
- if (!mtx->initialized) {
- int res = ethr_fake_static_mutex_init(mtx);
- if (res != 0)
- return res;
- }
- return TryEnterCriticalSection(&mtx->cs) ? 0 : EBUSY;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_lock)(ethr_mutex *mtx)
-{
- if (!mtx->initialized) {
- int res = ethr_fake_static_mutex_init(mtx);
- if (res != 0)
- return res;
- }
- EnterCriticalSection(&mtx->cs);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_mutex_unlock)(ethr_mutex *mtx)
-{
- LeaveCriticalSection(&mtx->cs);
- return 0;
-}
-
-#endif /* #ifdef ETHR_TRY_INLINE_FUNCS */
-
-#ifdef ERTS_MIXED_CYGWIN_VC
-
-/* atomics */
-
-#ifdef _MSC_VER
-# if _MSC_VER < 1300
-# define ETHR_IMMED_ATOMIC_SET_GET_SAFE__ 0 /* Dont trust really old compilers */
-# else
-# if defined(_M_IX86)
-# define ETHR_IMMED_ATOMIC_SET_GET_SAFE__ 1
-# else /* I.e. IA64 */
-# if _MSC_VER >= 1400
-# define ETHR_IMMED_ATOMIC_SET_GET_SAFE__ 1
-# else
-# define ETHR_IMMED_ATOMIC_SET_GET_SAFE__ 0
-# endif
-# endif
-# endif
-# if _MSC_VER >= 1400
-# include <intrin.h>
-# undef ETHR_COMPILER_BARRIER
-# define ETHR_COMPILER_BARRIER _ReadWriteBarrier()
-# endif
-#pragma intrinsic(_ReadWriteBarrier)
-#pragma intrinsic(_InterlockedAnd)
-#pragma intrinsic(_InterlockedOr)
-#else
-# define ETHR_IMMED_ATOMIC_SET_GET_SAFE__ 0
-#endif
-
-#define ETHR_HAVE_OPTIMIZED_ATOMIC_OPS 1
-#define ETHR_HAVE_OPTIMIZED_LOCKS 1
-
-#define ETHR_MEMORY_BARRIER \
-do { \
- volatile LONG x___ = 0; \
- (void) _InterlockedCompareExchange(&x___, (LONG) 1, (LONG) 0); \
-} while (0)
-
-typedef struct {
- volatile LONG value;
-} ethr_atomic_t;
-
-typedef struct {
- volatile LONG locked;
-} ethr_spinlock_t;
-
-typedef struct {
- volatile LONG counter;
-} ethr_rwlock_t;
-#define ETHR_WLOCK_FLAG__ (((LONG) 1) << 30)
-
-#ifdef ETHR_TRY_INLINE_FUNCS
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_init)(ethr_atomic_t *var, long i)
-{
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- var->value = (LONG) i;
-#else
- (void) InterlockedExchange(&var->value, (LONG) i);
-#endif
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_set)(ethr_atomic_t *var, long i)
-{
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- var->value = (LONG) i;
-#else
- (void) InterlockedExchange(&var->value, (LONG) i);
-#endif
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_read)(ethr_atomic_t *var, long *i)
-{
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- *i = var->value;
-#else
- *i = InterlockedExchangeAdd(&var->value, (LONG) 0);
-#endif
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_add)(ethr_atomic_t *var, long incr)
-{
- (void) InterlockedExchangeAdd(&var->value, (LONG) incr);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_addtest)(ethr_atomic_t *var,
- long i,
- long *testp)
-{
- *testp = InterlockedExchangeAdd(&var->value, (LONG) i);
- *testp += i;
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc)(ethr_atomic_t *var)
-{
- (void) InterlockedIncrement(&var->value);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec)(ethr_atomic_t *var)
-{
- (void) InterlockedDecrement(&var->value);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inctest)(ethr_atomic_t *var, long *testp)
-{
- *testp = (long) InterlockedIncrement(&var->value);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dectest)(ethr_atomic_t *var, long *testp)
-{
- *testp = (long) InterlockedDecrement(&var->value);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_and_old)(ethr_atomic_t *var,
- long mask,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- *
- * According to msdn _InterlockedAnd() provides a full
- * memory barrier.
- */
- *old = (long) _InterlockedAnd(&var->value, mask);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_or_old)(ethr_atomic_t *var,
- long mask,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- *
- * According to msdn _InterlockedOr() provides a full
- * memory barrier.
- */
- *old = (long) _InterlockedOr(&var->value, mask);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg)(ethr_atomic_t *var,
- long new,
- long expected,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- *
- * According to msdn _InterlockedCompareExchange() provides a full
- * memory barrier.
- */
- *old = _InterlockedCompareExchange(&var->value, (LONG) new, (LONG) expected);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_xchg)(ethr_atomic_t *var,
- long new,
- long *old)
-{
- *old = (long) InterlockedExchange(&var->value, (LONG) new);
- return 0;
-}
-
-/*
- * According to msdn InterlockedExchange() provides a full
- * memory barrier.
- */
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spinlock_init)(ethr_spinlock_t *lock)
-{
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- lock->locked = (LONG) 0;
-#else
- (void) InterlockedExchange(&lock->locked, (LONG) 0);
-#endif
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spinlock_destroy)(ethr_spinlock_t *lock)
-{
- return 0;
-}
-
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spin_unlock)(ethr_spinlock_t *lock)
-{
- ETHR_COMPILER_BARRIER;
- {
-#ifdef DEBUG
- LONG old =
-#endif
- InterlockedExchange(&lock->locked, (LONG) 0);
-#ifdef DEBUG
- ETHR_ASSERT(old == 1);
-#endif
- }
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spin_lock)(ethr_spinlock_t *lock)
-{
- LONG old;
- do {
- old = InterlockedExchange(&lock->locked, (LONG) 1);
- } while (old != (LONG) 0);
- ETHR_COMPILER_BARRIER;
- return 0;
-}
+#define ETHR_USE_OWN_RWMTX_IMPL__
+#define ETHR_USE_OWN_MTX_IMPL__
-/*
- * According to msdn InterlockedIncrement, InterlockedDecrement,
- * and InterlockedExchangeAdd(), _InterlockedAnd, and _InterlockedOr
- * provides full memory barriers.
- */
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwlock_init)(ethr_rwlock_t *lock)
-{
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- lock->counter = (LONG) 0;
-#else
- (void) InterlockedExchange(&lock->counter, (LONG) 0);
-#endif
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwlock_destroy)(ethr_rwlock_t *lock)
-{
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_read_unlock)(ethr_rwlock_t *lock)
-{
- ETHR_COMPILER_BARRIER;
- {
-#ifdef DEBUG
- LONG old =
-#endif
- InterlockedDecrement(&lock->counter);
- ETHR_ASSERT(old != 0);
- }
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_read_lock)(ethr_rwlock_t *lock)
-{
- while (1) {
- LONG old = InterlockedIncrement(&lock->counter);
- if ((old & ETHR_WLOCK_FLAG__) == 0)
- break; /* Got read lock */
- /* Restore and wait for writers to unlock */
- old = InterlockedDecrement(&lock->counter);
- while (old & ETHR_WLOCK_FLAG__) {
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- old = lock->counter;
-#else
- old = InterlockedExchangeAdd(&lock->counter, (LONG) 0);
-#endif
- }
- }
- ETHR_COMPILER_BARRIER;
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_write_unlock)(ethr_rwlock_t *lock)
-{
- ETHR_COMPILER_BARRIER;
- {
-#ifdef DEBUG
- LONG old =
-#endif
- _InterlockedAnd(&lock->counter, ~ETHR_WLOCK_FLAG__);
- ETHR_ASSERT(old & ETHR_WLOCK_FLAG__);
- }
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
-{
- LONG old;
- do {
- old = _InterlockedOr(&lock->counter, ETHR_WLOCK_FLAG__);
- } while (old & ETHR_WLOCK_FLAG__);
- /* We got the write part of the lock; wait for readers to unlock */
- while ((old & ~ETHR_WLOCK_FLAG__) != 0) {
-#if ETHR_IMMED_ATOMIC_SET_GET_SAFE__
- old = lock->counter;
-#else
- old = InterlockedExchangeAdd(&lock->counter, (LONG) 0);
-#endif
- ETHR_ASSERT(old & ETHR_WLOCK_FLAG__);
- }
- ETHR_COMPILER_BARRIER;
- return 0;
-}
-
-#endif /* #ifdef ETHR_TRY_INLINE_FUNCS */
-
-#endif /* #ifdef ERTS_MIXED_CYGWIN_VC */
+#define ETHR_YIELD() (Sleep(0), 0)
#else /* No supported thread lib found */
@@ -687,6 +198,12 @@ ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
#endif
+#ifdef SIZEOF_LONG
+#if SIZEOF_LONG < ETHR_SIZEOF_PTR
+#error size of long currently needs to be at least the same as size of void *
+#endif
+#endif
+
/* __builtin_expect() is needed by both native atomics code
* and the fallback code */
#if !defined(__GNUC__) || (__GNUC__ < 2) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
@@ -698,6 +215,8 @@ ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
# if defined(__GNUC__)
# if defined(ETHR_PREFER_GCC_NATIVE_IMPLS)
# include "gcc/ethread.h"
+# elif defined(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS)
+# include "libatomic_ops/ethread.h"
# endif
# ifndef ETHR_HAVE_NATIVE_ATOMICS
# if ETHR_SIZEOF_PTR == 4
@@ -718,115 +237,141 @@ ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
# endif
# endif
# include "gcc/ethread.h"
+# include "libatomic_ops/ethread.h"
# endif
+# elif defined(ETHR_WIN32_THREADS)
+# include "win/ethread.h"
# endif
-#endif /* !defined(ETHR_DISABLE_NATIVE_IMPLS) */
-
-#ifdef ETHR_HAVE_OPTIMIZED_ATOMIC_OPS
-# undef ETHR_HAVE_NATIVE_ATOMICS
-#endif
-#ifdef ETHR_HAVE_OPTIMIZED_LOCKS
-# undef ETHR_HAVE_NATIVE_LOCKS
-#endif
+#endif /* !ETHR_DISABLE_NATIVE_IMPLS */
-#ifdef ETHR_HAVE_NATIVE_ATOMICS
-#define ETHR_HAVE_OPTIMIZED_ATOMIC_OPS 1
-#endif
-#ifdef ETHR_HAVE_NATIVE_LOCKS
-#define ETHR_HAVE_OPTIMIZED_LOCKS 1
+#if defined(__GNUC__)
+# ifndef ETHR_COMPILER_BARRIER
+# define ETHR_COMPILER_BARRIER __asm__ __volatile__("" : : : "memory")
+# endif
+# ifndef ETHR_SPIN_BODY
+# if defined(__i386__) || defined(__x86_64__)
+# define ETHR_SPIN_BODY __asm__ __volatile__("rep;nop" : : : "memory")
+# elif defined(__ia64__)
+# define ETHR_SPIN_BODY __asm__ __volatile__("hint @pause" : : : "memory")
+# elif defined(__sparc__)
+# define ETHR_SPIN_BODY __asm__ __volatile__("membar #LoadLoad")
+# else
+# define ETHR_SPIN_BODY ETHR_COMPILER_BARRIER
+# endif
+# endif
+#elif defined(ETHR_WIN32_THREADS)
+# ifndef ETHR_COMPILER_BARRIER
+# include <intrin.h>
+# pragma intrinsic(_ReadWriteBarrier)
+# define ETHR_COMPILER_BARRIER _ReadWriteBarrier()
+# endif
+# ifndef ETHR_SPIN_BODY
+# define ETHR_SPIN_BODY do {YieldProcessor();ETHR_COMPILER_BARRIER;} while(0)
+# endif
#endif
-typedef struct {
- unsigned open;
- ethr_mutex mtx;
- ethr_cond cnd;
-} ethr_gate;
+#define ETHR_YIELD_AFTER_BUSY_LOOPS 50
-#ifdef ETHR_HAVE_NATIVE_ATOMICS
+#ifndef ETHR_HAVE_NATIVE_ATOMICS
/*
- * Map ethread native atomics to ethread API atomics.
+ * ETHR_*MEMORY_BARRIER orders between locked and atomic accesses only,
+ * i.e. when our lock based atomic fallback is used, a noop is sufficient.
*/
-typedef ethr_native_atomic_t ethr_atomic_t;
+#define ETHR_MEMORY_BARRIER do { } while (0)
+#define ETHR_WRITE_MEMORY_BARRIER do { } while (0)
+#define ETHR_READ_MEMORY_BARRIER do { } while (0)
+#define ETHR_READ_DEPEND_MEMORY_BARRIER do { } while (0)
#endif
-#ifdef ETHR_HAVE_NATIVE_LOCKS
-/*
- * Map ethread native spinlocks to ethread API spinlocks.
- */
-typedef ethr_native_spinlock_t ethr_spinlock_t;
-/*
- * Map ethread native rwlocks to ethread API rwlocks.
- */
-typedef ethr_native_rwlock_t ethr_rwlock_t;
+#ifndef ETHR_WRITE_MEMORY_BARRIER
+# define ETHR_WRITE_MEMORY_BARRIER ETHR_MEMORY_BARRIER
+# define ETHR_WRITE_MEMORY_BARRIER_IS_FULL
#endif
-
-#ifdef ETHR_USE_RWMTX_FALLBACK
-typedef struct {
- ethr_mutex mtx;
- ethr_cond rcnd;
- ethr_cond wcnd;
- unsigned readers;
- unsigned waiting_readers;
- unsigned waiting_writers;
-#if ETHR_XCHK
- int initialized;
+#ifndef ETHR_READ_MEMORY_BARRIER
+# define ETHR_READ_MEMORY_BARRIER ETHR_MEMORY_BARRIER
+# define ETHR_READ_MEMORY_BARRIER_IS_FULL
#endif
-} ethr_rwmutex;
+#ifndef ETHR_READ_DEPEND_MEMORY_BARRIER
+# define ETHR_READ_DEPEND_MEMORY_BARRIER ETHR_COMPILER_BARRIER
+# define ETHR_READ_DEPEND_MEMORY_BARRIER_IS_COMPILER_BARRIER
#endif
-#ifndef ETHR_HAVE_OPTIMIZED_ATOMIC_OPS
-typedef long ethr_atomic_t;
-#endif
+#define ETHR_FATAL_ERROR__(ERR) \
+ ethr_fatal_error__(__FILE__, __LINE__, __func__, (ERR))
-#ifndef ETHR_HAVE_OPTIMIZED_LOCKS
+ETHR_PROTO_NORETURN__ ethr_fatal_error__(const char *file,
+ int line,
+ const char *func,
+ int err);
-#if defined(ETHR_WIN32_THREADS)
-typedef struct {
- CRITICAL_SECTION cs;
-} ethr_spinlock_t;
-typedef struct {
- CRITICAL_SECTION cs;
- unsigned counter;
-} ethr_rwlock_t;
+void ethr_compiler_barrier_fallback(void);
+#ifndef ETHR_COMPILER_BARRIER
+# define ETHR_COMPILER_BARRIER ethr_compiler_barrier_fallback()
+#endif
-int ethr_do_spinlock_init(ethr_spinlock_t *lock);
-int ethr_do_rwlock_init(ethr_rwlock_t *lock);
+#ifndef ETHR_SPIN_BODY
+# define ETHR_SPIN_BODY ETHR_COMPILER_BARRIER
+#endif
-#define ETHR_RWLOCK_WRITERS (((unsigned) 1) << 31)
+#ifndef ETHR_YIELD
+# if defined(ETHR_HAVE_SCHED_YIELD)
+# ifdef ETHR_HAVE_SCHED_H
+# include <sched.h>
+# endif
+# include <errno.h>
+# if defined(ETHR_SCHED_YIELD_RET_INT)
+# define ETHR_YIELD() (sched_yield() < 0 ? errno : 0)
+# else
+# define ETHR_YIELD() (sched_yield(), 0)
+# endif
+# elif defined(ETHR_HAVE_PTHREAD_YIELD)
+# if defined(ETHR_PTHREAD_YIELD_RET_INT)
+# define ETHR_YIELD() pthread_yield()
+# else
+# define ETHR_YIELD() (pthread_yield(), 0)
+# endif
+# else
+# define ETHR_YIELD() (ethr_compiler_barrier(), 0)
+# endif
+#endif
+
+#include "ethr_optimized_fallbacks.h"
-#elif defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
-typedef struct {
- pthread_spinlock_t spnlck;
-} ethr_spinlock_t;
typedef struct {
- pthread_spinlock_t spnlck;
- unsigned counter;
-} ethr_rwlock_t;
-#define ETHR_RWLOCK_WRITERS (((unsigned) 1) << 31)
+ void *(*thread_create_prepare_func)(void);
+ void (*thread_create_parent_func)(void *);
+ void (*thread_create_child_func)(void *);
+} ethr_init_data;
-#else /* ethr mutex/rwmutex */
+#define ETHR_INIT_DATA_DEFAULT_INITER {NULL, NULL, NULL}
typedef struct {
- ethr_mutex mtx;
-} ethr_spinlock_t;
+ void *(*alloc)(size_t);
+ void *(*realloc)(void *, size_t);
+ void (*free)(void *);
+} ethr_memory_allocator;
+
+#define ETHR_MEM_ALLOC_DEF_INITER__ {NULL, NULL, NULL}
typedef struct {
- ethr_rwmutex rwmtx;
-} ethr_rwlock_t;
+ ethr_memory_allocator std;
+ ethr_memory_allocator sl;
+ ethr_memory_allocator ll;
+} ethr_memory_allocators;
-#endif /* end mutex/rwmutex */
-#endif /* ETHR_HAVE_OPTIMIZED_LOCKS */
+#define ETHR_MEM_ALLOCS_DEF_INITER__ \
+ {ETHR_MEM_ALLOC_DEF_INITER__, \
+ ETHR_MEM_ALLOC_DEF_INITER__, \
+ ETHR_MEM_ALLOC_DEF_INITER__}
typedef struct {
- void *(*alloc)(size_t);
- void *(*realloc)(void *, size_t);
- void (*free)(void *);
- void *(*thread_create_prepare_func)(void);
- void (*thread_create_parent_func)(void *);
- void (*thread_create_child_func)(void *);
-} ethr_init_data;
+ ethr_memory_allocators mem;
+ int reader_groups;
+ int main_threads;
+} ethr_late_init_data;
-#define ETHR_INIT_DATA_DEFAULT_INITER {malloc, realloc, free, NULL, NULL, NULL}
+#define ETHR_LATE_INIT_DATA_DEFAULT_INITER \
+ {ETHR_MEM_ALLOCS_DEF_INITER__, 0, 0}
typedef struct {
int detached; /* boolean (default false) */
@@ -835,18 +380,15 @@ typedef struct {
#define ETHR_THR_OPTS_DEFAULT_INITER {0, -1}
-#if defined(ETHR_CUSTOM_INLINE_FUNC_NAME_) || !defined(ETHR_TRY_INLINE_FUNCS)
-# define ETHR_NEED_MTX_PROTOTYPES__
-# define ETHR_NEED_RWMTX_PROTOTYPES__
+
+#if !defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
# define ETHR_NEED_SPINLOCK_PROTOTYPES__
+# define ETHR_NEED_RWSPINLOCK_PROTOTYPES__
# define ETHR_NEED_ATOMIC_PROTOTYPES__
#endif
-#if !defined(ETHR_NEED_RWMTX_PROTOTYPES__) && defined(ETHR_USE_RWMTX_FALLBACK)
-# define ETHR_NEED_RWMTX_PROTOTYPES__
-#endif
-
int ethr_init(ethr_init_data *);
+int ethr_late_init(ethr_late_init_data *);
int ethr_install_exit_handler(void (*funcp)(void));
int ethr_thr_create(ethr_tid *, void * (*)(void *), void *, ethr_thr_opts *);
int ethr_thr_join(ethr_tid, void **);
@@ -854,65 +396,6 @@ int ethr_thr_detach(ethr_tid);
void ethr_thr_exit(void *);
ethr_tid ethr_self(void);
int ethr_equal_tids(ethr_tid, ethr_tid);
-int ethr_mutex_init(ethr_mutex *);
-#ifdef ETHR_HAVE_ETHR_REC_MUTEX_INIT
-int ethr_rec_mutex_init(ethr_mutex *);
-#endif
-int ethr_mutex_destroy(ethr_mutex *);
-int ethr_mutex_set_forksafe(ethr_mutex *);
-int ethr_mutex_unset_forksafe(ethr_mutex *);
-#ifdef ETHR_NEED_MTX_PROTOTYPES__
-int ethr_mutex_trylock(ethr_mutex *);
-int ethr_mutex_lock(ethr_mutex *);
-int ethr_mutex_unlock(ethr_mutex *);
-#endif
-int ethr_cond_init(ethr_cond *);
-int ethr_cond_destroy(ethr_cond *);
-int ethr_cond_signal(ethr_cond *);
-int ethr_cond_broadcast(ethr_cond *);
-int ethr_cond_wait(ethr_cond *, ethr_mutex *);
-int ethr_cond_timedwait(ethr_cond *, ethr_mutex *, ethr_timeval *);
-
-int ethr_rwmutex_init(ethr_rwmutex *);
-int ethr_rwmutex_destroy(ethr_rwmutex *);
-#ifdef ETHR_NEED_RWMTX_PROTOTYPES__
-int ethr_rwmutex_tryrlock(ethr_rwmutex *);
-int ethr_rwmutex_rlock(ethr_rwmutex *);
-int ethr_rwmutex_runlock(ethr_rwmutex *);
-int ethr_rwmutex_tryrwlock(ethr_rwmutex *);
-int ethr_rwmutex_rwlock(ethr_rwmutex *);
-int ethr_rwmutex_rwunlock(ethr_rwmutex *);
-#endif
-
-#ifdef ETHR_NEED_ATOMIC_PROTOTYPES__
-int ethr_atomic_init(ethr_atomic_t *, long);
-int ethr_atomic_set(ethr_atomic_t *, long);
-int ethr_atomic_read(ethr_atomic_t *, long *);
-int ethr_atomic_inctest(ethr_atomic_t *, long *);
-int ethr_atomic_dectest(ethr_atomic_t *, long *);
-int ethr_atomic_inc(ethr_atomic_t *);
-int ethr_atomic_dec(ethr_atomic_t *);
-int ethr_atomic_addtest(ethr_atomic_t *, long, long *);
-int ethr_atomic_add(ethr_atomic_t *, long);
-int ethr_atomic_and_old(ethr_atomic_t *, long, long *);
-int ethr_atomic_or_old(ethr_atomic_t *, long, long *);
-int ethr_atomic_xchg(ethr_atomic_t *, long, long *);
-int ethr_atomic_cmpxchg(ethr_atomic_t *, long, long, long *);
-#endif
-
-#ifdef ETHR_NEED_SPINLOCK_PROTOTYPES__
-int ethr_spinlock_init(ethr_spinlock_t *);
-int ethr_spinlock_destroy(ethr_spinlock_t *);
-int ethr_spin_unlock(ethr_spinlock_t *);
-int ethr_spin_lock(ethr_spinlock_t *);
-
-int ethr_rwlock_init(ethr_rwlock_t *);
-int ethr_rwlock_destroy(ethr_rwlock_t *);
-int ethr_read_unlock(ethr_rwlock_t *);
-int ethr_read_lock(ethr_rwlock_t *);
-int ethr_write_unlock(ethr_rwlock_t *);
-int ethr_write_lock(ethr_rwlock_t *);
-#endif
int ethr_time_now(ethr_timeval *);
int ethr_tsd_key_create(ethr_tsd_key *);
@@ -920,13 +403,6 @@ int ethr_tsd_key_delete(ethr_tsd_key);
int ethr_tsd_set(ethr_tsd_key, void *);
void *ethr_tsd_get(ethr_tsd_key);
-int ethr_gate_init(ethr_gate *);
-int ethr_gate_destroy(ethr_gate *);
-int ethr_gate_close(ethr_gate *);
-int ethr_gate_let_through(ethr_gate *, unsigned);
-int ethr_gate_wait(ethr_gate *);
-int ethr_gate_swait(ethr_gate *, int);
-
#ifdef ETHR_HAVE_ETHR_SIG_FUNCS
#include <signal.h>
int ethr_sigmask(int how, const sigset_t *set, sigset_t *oset);
@@ -935,534 +411,579 @@ int ethr_sigwait(const sigset_t *set, int *sig);
void ethr_compiler_barrier(void);
-#ifdef ETHR_TRY_INLINE_FUNCS
-
-#ifdef ETHR_HAVE_NATIVE_ATOMICS
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_init)(ethr_atomic_t *var, long i)
-{
- ethr_native_atomic_init(var, i);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_set)(ethr_atomic_t *var, long i)
-{
- ethr_native_atomic_set(var, i);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_read)(ethr_atomic_t *var, long *i)
-{
- *i = ethr_native_atomic_read(var);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_add)(ethr_atomic_t *var, long incr)
-{
- ethr_native_atomic_add(var, incr);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_addtest)(ethr_atomic_t *var,
- long i,
- long *testp)
-{
- *testp = ethr_native_atomic_add_return(var, i);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc)(ethr_atomic_t *var)
-{
- ethr_native_atomic_inc(var);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec)(ethr_atomic_t *var)
-{
- ethr_native_atomic_dec(var);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inctest)(ethr_atomic_t *var, long *testp)
-{
- *testp = ethr_native_atomic_inc_return(var);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dectest)(ethr_atomic_t *var, long *testp)
-{
- *testp = ethr_native_atomic_dec_return(var);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_and_old)(ethr_atomic_t *var,
- long mask,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- *old = ethr_native_atomic_and_retold(var, mask);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_or_old)(ethr_atomic_t *var,
- long mask,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- *old = ethr_native_atomic_or_retold(var, mask);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_xchg)(ethr_atomic_t *var,
- long new,
- long *old)
-{
- *old = ethr_native_atomic_xchg(var, new);
- return 0;
-}
-
-/*
- * If *var == *old, replace *old with new, else do nothing.
- * In any case return the original value of *var in *old.
- */
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg)(ethr_atomic_t *var,
- long new,
- long expected,
- long *old)
-{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- *old = ethr_native_atomic_cmpxchg(var, new, expected);
- return 0;
-}
+#if defined(ETHR_HAVE_NATIVE_SPINLOCKS)
+typedef ethr_native_spinlock_t ethr_spinlock_t;
+#elif defined(ETHR_HAVE_OPTIMIZED_SPINLOCKS)
+typedef ethr_opt_spinlock_t ethr_spinlock_t;
+#elif defined(__WIN32__)
+typedef CRITICAL_SECTION ethr_spinlock_t;
+#else
+typedef pthread_mutex_t ethr_spinlock_t;
+#endif
-#endif /* ETHR_HAVE_NATIVE_ATOMICS */
+#ifdef ETHR_NEED_SPINLOCK_PROTOTYPES__
+int ethr_spinlock_init(ethr_spinlock_t *);
+int ethr_spinlock_destroy(ethr_spinlock_t *);
+void ethr_spin_unlock(ethr_spinlock_t *);
+void ethr_spin_lock(ethr_spinlock_t *);
+#endif
-#ifdef ETHR_HAVE_NATIVE_LOCKS
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_spinlock_init)(ethr_spinlock_t *lock)
{
+#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
ethr_native_spinlock_init(lock);
return 0;
+#elif defined(ETHR_HAVE_OPTIMIZED_SPINLOCKS)
+ return ethr_opt_spinlock_init((ethr_opt_spinlock_t *) lock);
+#elif defined(__WIN32__)
+ if (!InitializeCriticalSectionAndSpinCount((CRITICAL_SECTION *) lock, INT_MAX))
+ return ethr_win_get_errno__();
+ return 0;
+#else
+ return pthread_mutex_init((pthread_mutex_t *) lock, NULL);
+#endif
}
static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_spinlock_destroy)(ethr_spinlock_t *lock)
{
+#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
return 0;
+#elif defined(ETHR_HAVE_OPTIMIZED_SPINLOCKS)
+ return ethr_opt_spinlock_destroy((ethr_opt_spinlock_t *) lock);
+#elif defined(__WIN32__)
+ DeleteCriticalSection((CRITICAL_SECTION *) lock);
+ return 0;
+#else
+ return pthread_mutex_destroy((pthread_mutex_t *) lock);
+#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_spin_unlock)(ethr_spinlock_t *lock)
{
+#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
ethr_native_spin_unlock(lock);
- return 0;
+#elif defined(ETHR_HAVE_OPTIMIZED_SPINLOCKS)
+ int err = ethr_opt_spin_unlock((ethr_opt_spinlock_t *) lock);
+ if (err)
+ ETHR_FATAL_ERROR__(err);
+#elif defined(__WIN32__)
+ LeaveCriticalSection((CRITICAL_SECTION *) lock);
+#else
+ int err = pthread_mutex_unlock((pthread_mutex_t *) lock);
+ if (err)
+ ETHR_FATAL_ERROR__(err);
+#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_spin_lock)(ethr_spinlock_t *lock)
{
+#ifdef ETHR_HAVE_NATIVE_SPINLOCKS
ethr_native_spin_lock(lock);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwlock_init)(ethr_rwlock_t *lock)
-{
- ethr_native_rwlock_init(lock);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_rwlock_destroy)(ethr_rwlock_t *lock)
-{
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_read_unlock)(ethr_rwlock_t *lock)
-{
- ethr_native_read_unlock(lock);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_read_lock)(ethr_rwlock_t *lock)
-{
- ethr_native_read_lock(lock);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_write_unlock)(ethr_rwlock_t *lock)
-{
- ethr_native_write_unlock(lock);
- return 0;
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
-{
- ethr_native_write_lock(lock);
- return 0;
+#elif defined(ETHR_HAVE_OPTIMIZED_SPINLOCKS)
+ int err = ethr_opt_spin_lock((ethr_opt_spinlock_t *) lock);
+ if (err)
+ ETHR_FATAL_ERROR__(err);
+#elif defined(__WIN32__)
+ EnterCriticalSection((CRITICAL_SECTION *) lock);
+#else
+ int err = pthread_mutex_lock((pthread_mutex_t *) lock);
+ if (err)
+ ETHR_FATAL_ERROR__(err);
+#endif
}
-#endif /* ETHR_HAVE_NATIVE_LOCKS */
-
#endif /* ETHR_TRY_INLINE_FUNCS */
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
/*
- * Fallbacks for atomics used in absence of optimized implementation.
+ * Map ethread native atomics to ethread API atomics.
*/
-#ifndef ETHR_HAVE_OPTIMIZED_ATOMIC_OPS
+typedef ethr_native_atomic_t ethr_atomic_t;
+#else
+typedef long ethr_atomic_t;
+#endif
+#ifdef ETHR_NEED_ATOMIC_PROTOTYPES__
+void ethr_atomic_init(ethr_atomic_t *, long);
+void ethr_atomic_set(ethr_atomic_t *, long);
+long ethr_atomic_read(ethr_atomic_t *);
+long ethr_atomic_inc_read(ethr_atomic_t *);
+long ethr_atomic_dec_read(ethr_atomic_t *);
+void ethr_atomic_inc(ethr_atomic_t *);
+void ethr_atomic_dec(ethr_atomic_t *);
+long ethr_atomic_add_read(ethr_atomic_t *, long);
+void ethr_atomic_add(ethr_atomic_t *, long);
+long ethr_atomic_read_band(ethr_atomic_t *, long);
+long ethr_atomic_read_bor(ethr_atomic_t *, long);
+long ethr_atomic_xchg(ethr_atomic_t *, long);
+long ethr_atomic_cmpxchg(ethr_atomic_t *, long, long);
+long ethr_atomic_read_acqb(ethr_atomic_t *);
+long ethr_atomic_inc_read_acqb(ethr_atomic_t *);
+void ethr_atomic_set_relb(ethr_atomic_t *, long);
+void ethr_atomic_dec_relb(ethr_atomic_t *);
+long ethr_atomic_dec_read_relb(ethr_atomic_t *);
+long ethr_atomic_cmpxchg_acqb(ethr_atomic_t *, long, long);
+long ethr_atomic_cmpxchg_relb(ethr_atomic_t *, long, long);
+#endif
+
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
+
+#ifndef ETHR_HAVE_NATIVE_ATOMICS
/*
- * ETHR_MEMORY_BARRIER orders between locked and atomic accesses only,
- * i.e. when this atomic fallback is used a noop is sufficient.
+ * Fallbacks for atomics used in absence of a native implementation.
*/
-#define ETHR_MEMORY_BARRIER
#define ETHR_ATOMIC_ADDR_BITS 10
#define ETHR_ATOMIC_ADDR_SHIFT 6
typedef struct {
union {
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- pthread_spinlock_t spnlck;
-#else
- ethr_mutex mtx;
-#endif
+ ethr_spinlock_t lck;
char buf[ETHR_CACHE_LINE_SIZE];
} u;
} ethr_atomic_protection_t;
extern ethr_atomic_protection_t ethr_atomic_protection__[1 << ETHR_ATOMIC_ADDR_BITS];
-
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
-
#define ETHR_ATOMIC_PTR2LCK__(PTR) \
(&ethr_atomic_protection__[((((unsigned long) (PTR)) >> ETHR_ATOMIC_ADDR_SHIFT) \
- & ((1 << ETHR_ATOMIC_ADDR_BITS) - 1))].u.spnlck)
+ & ((1 << ETHR_ATOMIC_ADDR_BITS) - 1))].u.lck)
#define ETHR_ATOMIC_OP_FALLBACK_IMPL__(AP, EXPS) \
do { \
- pthread_spinlock_t *slp__ = ETHR_ATOMIC_PTR2LCK__((AP)); \
- int res__ = pthread_spin_lock(slp__); \
- if (res__ != 0) \
- return res__; \
+ ethr_spinlock_t *slp__ = ETHR_ATOMIC_PTR2LCK__((AP)); \
+ ethr_spin_lock(slp__); \
{ EXPS; } \
- return pthread_spin_unlock(slp__); \
+ ethr_spin_unlock(slp__); \
} while (0)
-#else /* ethread mutex */
-
-#define ETHR_ATOMIC_PTR2LCK__(PTR) \
-(&ethr_atomic_protection__[((((unsigned long) (PTR)) >> ETHR_ATOMIC_ADDR_SHIFT) \
- & ((1 << ETHR_ATOMIC_ADDR_BITS) - 1))].u.mtx)
-
-#define ETHR_ATOMIC_OP_FALLBACK_IMPL__(AP, EXPS) \
-do { \
- ethr_mutex *mtxp__ = ETHR_ATOMIC_PTR2LCK__((AP)); \
- int res__ = ETHR_INLINE_FUNC_NAME_(ethr_mutex_lock)(mtxp__); \
- if (res__ != 0) \
- return res__; \
- { EXPS; } \
- return ETHR_INLINE_FUNC_NAME_(ethr_mutex_unlock)(mtxp__); \
-} while (0)
-
-#endif /* end ethread mutex */
-
-#ifdef ETHR_TRY_INLINE_FUNCS
+#endif
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_atomic_init)(ethr_atomic_t *var, long i)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var = (ethr_atomic_t) i);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_init(var, i);
+#else
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var = i);
+#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_atomic_set)(ethr_atomic_t *var, long i)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var = (ethr_atomic_t) i);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_set(var, i);
+#else
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var = i);
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_read)(ethr_atomic_t *var, long *i)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_read)(ethr_atomic_t *var)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *i = (long) *var);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_read(var);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = (long) *var);
+ return res;
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inctest)(ethr_atomic_t *incp, long *testp)
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_add)(ethr_atomic_t *var, long incr)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(incp, *testp = (long) ++(*incp));
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_add(var, incr);
+#else
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var += incr);
+#endif
+}
+
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_add_read)(ethr_atomic_t *var, long i)
+{
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_add_return(var, i);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var += i; res = *var);
+ return res;
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dectest)(ethr_atomic_t *decp, long *testp)
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc)(ethr_atomic_t *var)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(decp, *testp = (long) --(*decp));
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_inc(var);
+#else
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, ++(*var));
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_add)(ethr_atomic_t *var, long incr)
-{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *var += incr);
-}
-
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_addtest)(ethr_atomic_t *incp,
- long i,
- long *testp)
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec)(ethr_atomic_t *var)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(incp, *incp += i; *testp = *incp);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_dec(var);
+#else
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, --(*var));
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc)(ethr_atomic_t *incp)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc_read)(ethr_atomic_t *var)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(incp, ++(*incp));
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_inc_return(var);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = (long) ++(*var));
+ return res;
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec)(ethr_atomic_t *decp)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec_read)(ethr_atomic_t *var)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(decp, --(*decp));
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_dec_return(var);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = (long) --(*var));
+ return res;
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_and_old)(ethr_atomic_t *var,
- long mask,
- long *old)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_read_band)(ethr_atomic_t *var,
+ long mask)
{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *old = *var; *var &= mask);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_and_retold(var, mask);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = *var; *var &= mask);
+ return res;
+#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_atomic_or_old)(ethr_atomic_t *var,
- long mask,
- long *old)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_read_bor)(ethr_atomic_t *var,
+ long mask)
{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *old = *var; *var |= mask);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_or_retold(var, mask);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = *var; *var |= mask);
+ return res;
+#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE long
ETHR_INLINE_FUNC_NAME_(ethr_atomic_xchg)(ethr_atomic_t *var,
- long new,
- long *old)
+ long new)
{
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, *old = *var; *var = new);
-}
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_xchg(var, new);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var, res = *var; *var = new);
+ return res;
+#endif
+}
-/*
- * If *var == *old, replace *old with new, else do nothing.
- * In any case return the original value of *var in *old.
- */
-static ETHR_INLINE int
+static ETHR_INLINE long
ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg)(ethr_atomic_t *var,
long new,
- long expected,
- long *old)
+ long exp)
{
- /*
- * See "Extra memory barrier requirements" note at the top
- * of the file.
- */
- ETHR_ATOMIC_OP_FALLBACK_IMPL__(
- var,
- long old_val = *var;
- *old = old_val;
- if (__builtin_expect(old_val == expected, 1))
- *var = new;
- );
- return 0;
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_cmpxchg(var, new, exp);
+#else
+ long res;
+ ETHR_ATOMIC_OP_FALLBACK_IMPL__(var,
+ {
+ res = *var;
+ if (__builtin_expect(res == exp, 1))
+ *var = new;
+ });
+ return res;
+#endif
}
-#endif /* #ifdef ETHR_TRY_INLINE_FUNCS */
-#endif /* #ifndef ETHR_HAVE_OPTIMIZED_ATOMIC_OPS */
-
/*
- * Fallbacks for spin locks, and rw spin locks used in absence of
- * optimized implementation.
+ * Important memory barrier requirements.
+ *
+ * The following atomic operations *must* supply a memory barrier of
+ * at least the type specified by its suffix:
+ * _acqb = acquire barrier
+ * _relb = release barrier
*/
-#ifndef ETHR_HAVE_OPTIMIZED_LOCKS
-#ifdef ETHR_TRY_INLINE_FUNCS
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_read_acqb)(ethr_atomic_t *var)
+{
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_read_acqb(var);
+#else
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_read)(var);
+#endif
+}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spinlock_init)(ethr_spinlock_t *lock)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc_read_acqb)(ethr_atomic_t *var)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- return pthread_spin_init(&lock->spnlck, 0);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_inc_return_acqb(var);
#else
- return ethr_mutex_init(&lock->mtx);
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_inc_read)(var);
#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spinlock_destroy)(ethr_spinlock_t *lock)
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_set_relb)(ethr_atomic_t *var, long val)
+{
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_set_relb(var, val);
+#else
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_set)(var, val);
+#endif
+}
+
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec_relb)(ethr_atomic_t *var)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- return pthread_spin_destroy(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ ethr_native_atomic_dec_relb(var);
#else
- return ethr_mutex_destroy(&lock->mtx);
+ ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec)(var);
#endif
}
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec_read_relb)(ethr_atomic_t *var)
+{
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_dec_return_relb(var);
+#else
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_dec_read)(var);
+#endif
+}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spin_unlock)(ethr_spinlock_t *lock)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg_acqb)(ethr_atomic_t *var,
+ long new,
+ long exp)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- return pthread_spin_unlock(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_cmpxchg_acqb(var, new, exp);
#else
- return ETHR_INLINE_FUNC_NAME_(ethr_mutex_unlock)(&lock->mtx);
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg)(var, new, exp);
#endif
}
-static ETHR_INLINE int
-ETHR_INLINE_FUNC_NAME_(ethr_spin_lock)(ethr_spinlock_t *lock)
+static ETHR_INLINE long
+ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg_relb)(ethr_atomic_t *var,
+ long new,
+ long exp)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- return pthread_spin_lock(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_ATOMICS
+ return ethr_native_atomic_cmpxchg_relb(var, new, exp);
#else
- return ETHR_INLINE_FUNC_NAME_(ethr_mutex_lock)(&lock->mtx);
+ return ETHR_INLINE_FUNC_NAME_(ethr_atomic_cmpxchg)(var, new, exp);
#endif
}
-#ifdef ETHR_USE_RWMTX_FALLBACK
-#define ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(X) X
+#endif /* ETHR_TRY_INLINE_FUNCS */
+
+typedef struct ethr_ts_event_ ethr_ts_event; /* Needed by ethr_mutex.h */
+
+#if defined(ETHR_WIN32_THREADS)
+# include "win/ethr_event.h"
#else
-#define ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(X) ETHR_INLINE_FUNC_NAME_(X)
+# include "pthread/ethr_event.h"
+#endif
+
+int ethr_set_main_thr_status(int, int);
+int ethr_get_main_thr_status(int *);
+
+struct ethr_ts_event_ {
+ ethr_ts_event *next;
+ ethr_ts_event *prev;
+ ethr_event event;
+ void *udata;
+ ethr_atomic_t uaflgs;
+ unsigned uflgs;
+ unsigned iflgs; /* for ethr lib only */
+ short rgix; /* for ethr lib only */
+ short mtix; /* for ethr lib only */
+};
+
+#define ETHR_TS_EV_ETHREAD (((unsigned) 1) << 0)
+#define ETHR_TS_EV_INITED (((unsigned) 1) << 1)
+#define ETHR_TS_EV_TMP (((unsigned) 1) << 2)
+#define ETHR_TS_EV_MAIN_THR (((unsigned) 1) << 3)
+
+int ethr_get_tmp_ts_event__(ethr_ts_event **tsepp);
+int ethr_free_ts_event__(ethr_ts_event *tsep);
+int ethr_make_ts_event__(ethr_ts_event **tsepp);
+
+#if !defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)
+ethr_ts_event *ethr_get_ts_event(void);
+void ethr_leave_ts_event(ethr_ts_event *);
+#endif
+
+#if defined(ETHR_PTHREADS)
+
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)
+
+extern pthread_key_t ethr_ts_event_key__;
+
+static ETHR_INLINE ethr_ts_event *
+ETHR_INLINE_FUNC_NAME_(ethr_get_ts_event)(void)
+{
+ ethr_ts_event *tsep = pthread_getspecific(ethr_ts_event_key__);
+ if (!tsep) {
+ int res = ethr_make_ts_event__(&tsep);
+ if (res != 0)
+ ETHR_FATAL_ERROR__(res);
+ ETHR_ASSERT(tsep);
+ }
+ return tsep;
+}
+
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_leave_ts_event)(ethr_ts_event *tsep)
+{
+
+}
+
#endif
+#elif defined(ETHR_WIN32_THREADS)
+
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHREAD_IMPL__)
+
+extern DWORD ethr_ts_event_key__;
+
+static ETHR_INLINE ethr_ts_event *
+ETHR_INLINE_FUNC_NAME_(ethr_get_ts_event)(void)
+{
+ ethr_ts_event *tsep = TlsGetValue(ethr_ts_event_key__);
+ if (!tsep) {
+ int res = ethr_get_tmp_ts_event__(&tsep);
+ if (res != 0)
+ ETHR_FATAL_ERROR__(res);
+ ETHR_ASSERT(tsep);
+ }
+ return tsep;
+}
+
+static ETHR_INLINE void
+ETHR_INLINE_FUNC_NAME_(ethr_leave_ts_event)(ethr_ts_event *tsep)
+{
+ if (tsep->iflgs & ETHR_TS_EV_TMP) {
+ int res = ethr_free_ts_event__(tsep);
+ if (res != 0)
+ ETHR_FATAL_ERROR__(res);
+ }
+}
+
+#endif
+
+#endif
+
+#include "ethr_mutex.h" /* Need atomic declarations and tse */
+
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+typedef ethr_native_rwlock_t ethr_rwlock_t;
+#else
+typedef ethr_rwmutex ethr_rwlock_t;
+#endif
+
+#ifdef ETHR_NEED_RWSPINLOCK_PROTOTYPES__
+int ethr_rwlock_init(ethr_rwlock_t *);
+int ethr_rwlock_destroy(ethr_rwlock_t *);
+void ethr_read_unlock(ethr_rwlock_t *);
+void ethr_read_lock(ethr_rwlock_t *);
+void ethr_write_unlock(ethr_rwlock_t *);
+void ethr_write_lock(ethr_rwlock_t *);
+#endif
+
+#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__)
+
static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_rwlock_init)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- lock->counter = 0;
- return pthread_spin_init(&lock->spnlck, 0);
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ ethr_native_rwlock_init(lock);
+ return 0;
#else
- return ethr_rwmutex_init(&lock->rwmtx);
+ return ethr_rwmutex_init_opt((ethr_rwmutex *) lock, NULL);
#endif
}
static ETHR_INLINE int
ETHR_INLINE_FUNC_NAME_(ethr_rwlock_destroy)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- return pthread_spin_destroy(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ return 0;
#else
- return ethr_rwmutex_destroy(&lock->rwmtx);
+ return ethr_rwmutex_destroy((ethr_rwmutex *) lock);
#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_read_unlock)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- int res = pthread_spin_lock(&lock->spnlck);
- if (res != 0)
- return res;
- lock->counter--;
- return pthread_spin_unlock(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ ethr_native_read_unlock(lock);
#else
- return ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(ethr_rwmutex_runlock)(&lock->rwmtx);
+ ethr_rwmutex_runlock((ethr_rwmutex *) lock);
#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_read_lock)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- int locked = 0;
- do {
- int res = pthread_spin_lock(&lock->spnlck);
- if (res != 0)
- return res;
- if ((lock->counter & ETHR_RWLOCK_WRITERS) == 0) {
- lock->counter++;
- locked = 1;
- }
- res = pthread_spin_unlock(&lock->spnlck);
- if (res != 0)
- return res;
- } while (!locked);
- return 0;
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ ethr_native_read_lock(lock);
#else
- return ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(ethr_rwmutex_rlock)(&lock->rwmtx);
+ ethr_rwmutex_rlock((ethr_rwmutex *) lock);
#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_write_unlock)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- lock->counter = 0;
- return pthread_spin_unlock(&lock->spnlck);
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ ethr_native_write_unlock(lock);
#else
- return ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(ethr_rwmutex_rwunlock)(&lock->rwmtx);
+ ethr_rwmutex_rwunlock((ethr_rwmutex *) lock);
#endif
}
-static ETHR_INLINE int
+static ETHR_INLINE void
ETHR_INLINE_FUNC_NAME_(ethr_write_lock)(ethr_rwlock_t *lock)
{
-#if defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
- while (1) {
- int res = pthread_spin_lock(&lock->spnlck);
- if (res != 0)
- return res;
- lock->counter |= ETHR_RWLOCK_WRITERS;
- if (lock->counter == ETHR_RWLOCK_WRITERS)
- return 0;
- res = pthread_spin_unlock(&lock->spnlck);
- if (res != 0)
- return res;
- }
+#ifdef ETHR_HAVE_NATIVE_RWSPINLOCKS
+ ethr_native_write_lock(lock);
#else
- return ETHR_RWLOCK_RWMTX_FALLBACK_NAME_(ethr_rwmutex_rwlock)(&lock->rwmtx);
+ ethr_rwmutex_rwlock((ethr_rwmutex *) lock);
#endif
}
-#endif /* #ifdef ETHR_TRY_INLINE_FUNCS */
-
-#endif /* ETHR_HAVE_OPTIMIZED_LOCKS */
-
-#if defined(ETHR_HAVE_OPTIMIZED_LOCKS) || defined(ETHR_HAVE_PTHREAD_SPIN_LOCK)
-# define ETHR_HAVE_OPTIMIZED_SPINLOCK
-#endif
+#endif /* ETHR_TRY_INLINE_FUNCS */
#endif /* #ifndef ETHREAD_H__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 14:39:39 +0000