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-rw-r--r--erts/include/internal/pthread/ethr_event.h54
-rw-r--r--erts/lib_src/pthread/ethr_event.c30
2 files changed, 35 insertions, 49 deletions
diff --git a/erts/include/internal/pthread/ethr_event.h b/erts/include/internal/pthread/ethr_event.h
index 4cf87406d7..93da8a0429 100644
--- a/erts/include/internal/pthread/ethr_event.h
+++ b/erts/include/internal/pthread/ethr_event.h
@@ -30,31 +30,9 @@
#include <linux/futex.h>
#include <sys/time.h>
-/*
- * Note: Linux futexes operate on 32-bit integers, but
- * ethr_native_atomic_t are 64-bits on 64-bit
- * platforms. This has to be taken into account.
- * Therefore, in each individual value used each
- * byte look the same.
- */
-
-#if ETHR_SIZEOF_PTR == 8
-
-#define ETHR_EVENT_OFF_WAITER__ ((ethr_sint_t) 0xffffffffffffffffL)
-#define ETHR_EVENT_OFF__ ((ethr_sint_t) 0x7777777777777777L)
-#define ETHR_EVENT_ON__ ((ethr_sint_t) 0L)
-
-#elif ETHR_SIZEOF_PTR == 4
-
-#define ETHR_EVENT_OFF_WAITER__ ((ethr_sint_t) 0xffffffffL)
-#define ETHR_EVENT_OFF__ ((ethr_sint_t) 0x77777777L)
-#define ETHR_EVENT_ON__ ((ethr_sint_t) 0L)
-
-#else
-
-#error ehrm...
-
-#endif
+#define ETHR_EVENT_OFF_WAITER__ ((ethr_sint32_t) -1)
+#define ETHR_EVENT_OFF__ ((ethr_sint32_t) 1)
+#define ETHR_EVENT_ON__ ((ethr_sint32_t) 0)
#if defined(FUTEX_WAIT_PRIVATE) && defined(FUTEX_WAKE_PRIVATE)
# define ETHR_FUTEX_WAIT__ FUTEX_WAIT_PRIVATE
@@ -65,11 +43,17 @@
#endif
typedef struct {
- ethr_atomic_t futex;
+ ethr_atomic32_t futex;
} ethr_event;
-#define ETHR_FUTEX__(FTX, OP, VAL) \
- (-1 == syscall(__NR_futex, (void *) (FTX), (OP), (int) (VAL), NULL, NULL, 0)\
+#define ETHR_FUTEX__(FTX, OP, VAL) \
+ (-1 == syscall(__NR_futex, \
+ (void *) ethr_atomic32_addr((FTX)), \
+ (OP), \
+ (int) (VAL), \
+ NULL, \
+ NULL, \
+ 0) \
? errno : 0)
#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_EVENT_IMPL__)
@@ -77,9 +61,9 @@ typedef struct {
static void ETHR_INLINE
ETHR_INLINE_FUNC_NAME_(ethr_event_set)(ethr_event *e)
{
- ethr_sint_t val;
+ ethr_sint32_t val;
ETHR_WRITE_MEMORY_BARRIER;
- val = ethr_atomic_xchg(&e->futex, ETHR_EVENT_ON__);
+ val = ethr_atomic32_xchg(&e->futex, ETHR_EVENT_ON__);
if (val == ETHR_EVENT_OFF_WAITER__) {
int res = ETHR_FUTEX__(&e->futex, ETHR_FUTEX_WAKE__, 1);
if (res != 0)
@@ -90,7 +74,7 @@ ETHR_INLINE_FUNC_NAME_(ethr_event_set)(ethr_event *e)
static void ETHR_INLINE
ETHR_INLINE_FUNC_NAME_(ethr_event_reset)(ethr_event *e)
{
- ethr_atomic_set(&e->futex, ETHR_EVENT_OFF__);
+ ethr_atomic32_set(&e->futex, ETHR_EVENT_OFF__);
ETHR_MEMORY_BARRIER;
}
@@ -100,7 +84,7 @@ ETHR_INLINE_FUNC_NAME_(ethr_event_reset)(ethr_event *e)
/* --- Posix mutex/cond implementation of events ---------------------------- */
typedef struct {
- ethr_atomic_t state;
+ ethr_atomic32_t state;
pthread_mutex_t mtx;
pthread_cond_t cnd;
} ethr_event;
@@ -114,9 +98,9 @@ typedef struct {
static void ETHR_INLINE
ETHR_INLINE_FUNC_NAME_(ethr_event_set)(ethr_event *e)
{
- ethr_sint_t val;
+ ethr_sint32_t val;
ETHR_WRITE_MEMORY_BARRIER;
- val = ethr_atomic_xchg(&e->state, ETHR_EVENT_ON__);
+ val = ethr_atomic32_xchg(&e->state, ETHR_EVENT_ON__);
if (val == ETHR_EVENT_OFF_WAITER__) {
int res = pthread_mutex_lock(&e->mtx);
if (res != 0)
@@ -133,7 +117,7 @@ ETHR_INLINE_FUNC_NAME_(ethr_event_set)(ethr_event *e)
static void ETHR_INLINE
ETHR_INLINE_FUNC_NAME_(ethr_event_reset)(ethr_event *e)
{
- ethr_atomic_set(&e->state, ETHR_EVENT_OFF__);
+ ethr_atomic32_set(&e->state, ETHR_EVENT_OFF__);
ETHR_MEMORY_BARRIER;
}
diff --git a/erts/lib_src/pthread/ethr_event.c b/erts/lib_src/pthread/ethr_event.c
index ae1d827731..9434d60d0a 100644
--- a/erts/lib_src/pthread/ethr_event.c
+++ b/erts/lib_src/pthread/ethr_event.c
@@ -41,7 +41,7 @@
int
ethr_event_init(ethr_event *e)
{
- ethr_atomic_init(&e->futex, ETHR_EVENT_OFF__);
+ ethr_atomic32_init(&e->futex, ETHR_EVENT_OFF__);
return 0;
}
@@ -56,7 +56,7 @@ wait__(ethr_event *e, int spincount)
{
unsigned sc = spincount;
int res;
- ethr_sint_t val;
+ ethr_sint32_t val;
int until_yield = ETHR_YIELD_AFTER_BUSY_LOOPS;
if (spincount < 0)
@@ -64,7 +64,7 @@ wait__(ethr_event *e, int spincount)
while (1) {
while (1) {
- val = ethr_atomic_read(&e->futex);
+ val = ethr_atomic32_read(&e->futex);
if (val == ETHR_EVENT_ON__)
return 0;
if (sc == 0)
@@ -80,16 +80,18 @@ wait__(ethr_event *e, int spincount)
}
if (val != ETHR_EVENT_OFF_WAITER__) {
- val = ethr_atomic_cmpxchg(&e->futex,
- ETHR_EVENT_OFF_WAITER__,
- ETHR_EVENT_OFF__);
+ val = ethr_atomic32_cmpxchg(&e->futex,
+ ETHR_EVENT_OFF_WAITER__,
+ ETHR_EVENT_OFF__);
if (val == ETHR_EVENT_ON__)
return 0;
ETHR_ASSERT(val == ETHR_EVENT_OFF__);
}
- res = ETHR_FUTEX__(&e->futex, ETHR_FUTEX_WAIT__, ETHR_EVENT_OFF_WAITER__);
+ res = ETHR_FUTEX__(&e->futex,
+ ETHR_FUTEX_WAIT__,
+ ETHR_EVENT_OFF_WAITER__);
if (res == EINTR)
break;
if (res != 0 && res != EWOULDBLOCK)
@@ -106,7 +108,7 @@ int
ethr_event_init(ethr_event *e)
{
int res;
- ethr_atomic_init(&e->state, ETHR_EVENT_OFF__);
+ ethr_atomic32_init(&e->state, ETHR_EVENT_OFF__);
res = pthread_mutex_init(&e->mtx, NULL);
if (res != 0)
return res;
@@ -135,7 +137,7 @@ static ETHR_INLINE int
wait__(ethr_event *e, int spincount)
{
int sc = spincount;
- ethr_sint_t val;
+ ethr_sint32_t val;
int res, ulres;
int until_yield = ETHR_YIELD_AFTER_BUSY_LOOPS;
@@ -143,7 +145,7 @@ wait__(ethr_event *e, int spincount)
ETHR_FATAL_ERROR__(EINVAL);
while (1) {
- val = ethr_atomic_read(&e->state);
+ val = ethr_atomic32_read(&e->state);
if (val == ETHR_EVENT_ON__)
return 0;
if (sc == 0)
@@ -159,9 +161,9 @@ wait__(ethr_event *e, int spincount)
}
if (val != ETHR_EVENT_OFF_WAITER__) {
- val = ethr_atomic_cmpxchg(&e->state,
- ETHR_EVENT_OFF_WAITER__,
- ETHR_EVENT_OFF__);
+ val = ethr_atomic32_cmpxchg(&e->state,
+ ETHR_EVENT_OFF_WAITER__,
+ ETHR_EVENT_OFF__);
if (val == ETHR_EVENT_ON__)
return 0;
ETHR_ASSERT(val == ETHR_EVENT_OFF__);
@@ -176,7 +178,7 @@ wait__(ethr_event *e, int spincount)
while (1) {
- val = ethr_atomic_read(&e->state);
+ val = ethr_atomic32_read(&e->state);
if (val == ETHR_EVENT_ON__)
break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 05:00:28 +0000