diff options
Diffstat (limited to 'erts/emulator/beam/erl_threads.h')
-rw-r--r-- | erts/emulator/beam/erl_threads.h | 456 |
1 files changed, 372 insertions, 84 deletions
diff --git a/erts/emulator/beam/erl_threads.h b/erts/emulator/beam/erl_threads.h index 0b7269262e..8c9cace0c5 100644 --- a/erts/emulator/beam/erl_threads.h +++ b/erts/emulator/beam/erl_threads.h @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2001-2010. All Rights Reserved. + * Copyright Ericsson AB 2001-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -27,9 +27,6 @@ #define ERTS_SPIN_BODY ETHR_SPIN_BODY -#define ERTS_MAX_READER_GROUPS 8 -extern int erts_reader_groups; - #include "sys.h" #ifdef USE_THREADS @@ -39,6 +36,16 @@ extern int erts_reader_groups; #include "erl_lock_count.h" #include "erl_term.h" +#if defined(__GLIBC__) && (__GLIBC__ << 16) + __GLIBC_MINOR__ < (2 << 16) + 4 +/* + * pthread_mutex_destroy() may return EBUSY when it shouldn't :( We have + * only seen this bug in glibc versions before 2.4. Note that condition + * variables, rwmutexes, spinlocks, and rwspinlocks also may be effected by + * this bug since these implementations may use mutexes internally. + */ +# define ERTS_THR_HAVE_BUSY_DESTROY_BUG +#endif + #define ERTS_THR_MEMORY_BARRIER ETHR_MEMORY_BARRIER #ifdef ERTS_ENABLE_LOCK_COUNT @@ -92,7 +99,10 @@ typedef ethr_rwmutex_opt erts_rwmtx_opt_t; typedef ethr_tsd_key erts_tsd_key_t; typedef ethr_ts_event erts_tse_t; +typedef ethr_sint_t erts_aint_t; typedef ethr_atomic_t erts_atomic_t; +typedef ethr_sint32_t erts_aint32_t; +typedef ethr_atomic32_t erts_atomic32_t; /* spinlock */ typedef struct { @@ -116,7 +126,6 @@ typedef struct { #endif } erts_rwlock_t; -typedef ethr_timeval erts_thr_timeval_t; __decl_noreturn void __noreturn erts_thr_fatal_error(int, char *); /* implemented in erl_init.c */ @@ -155,7 +164,10 @@ typedef struct { typedef int erts_rwmtx_t; typedef int erts_tsd_key_t; typedef int erts_tse_t; -typedef long erts_atomic_t; +typedef SWord erts_aint_t; +typedef SWord erts_atomic_t; +typedef SWord erts_aint32_t; +typedef SWord erts_atomic32_t; #if __GNUC__ > 2 typedef struct { } erts_spinlock_t; typedef struct { } erts_rwlock_t; @@ -163,10 +175,6 @@ typedef struct { } erts_rwlock_t; typedef struct { int gcc_is_buggy; } erts_spinlock_t; typedef struct { int gcc_is_buggy; } erts_rwlock_t; #endif -typedef struct { - long tv_sec; - long tv_nsec; -} erts_thr_timeval_t; #define ERTS_MTX_INITER 0 #define ERTS_CND_INITER 0 @@ -176,6 +184,11 @@ typedef struct { #endif /* #ifdef USE_THREADS */ +#define ERTS_AINT_T_MAX (~(((erts_aint_t) 1) << (sizeof(erts_aint_t)*8-1))) +#define ERTS_AINT_T_MIN ((((erts_aint_t) 1) << (sizeof(erts_aint_t)*8-1))) +#define ERTS_AINT32_T_MAX (~(((erts_aint32_t) 1) << (sizeof(erts_aint32_t)*8-1))) +#define ERTS_AINT32_T_MIN ((((erts_aint32_t) 1) << (sizeof(erts_aint32_t)*8-1))) + ERTS_GLB_INLINE void erts_thr_init(erts_thr_init_data_t *id); ERTS_GLB_INLINE void erts_thr_late_init(erts_thr_late_init_data_t *id); ERTS_GLB_INLINE void erts_thr_create(erts_tid_t *tid, void * (*func)(void *), @@ -234,33 +247,65 @@ ERTS_GLB_INLINE int erts_rwmtx_tryrwlock(erts_rwmtx_t *rwmtx); ERTS_GLB_INLINE void erts_rwmtx_rwunlock(erts_rwmtx_t *rwmtx); ERTS_GLB_INLINE int erts_lc_rwmtx_is_rlocked(erts_rwmtx_t *mtx); ERTS_GLB_INLINE int erts_lc_rwmtx_is_rwlocked(erts_rwmtx_t *mtx); -ERTS_GLB_INLINE void erts_atomic_init(erts_atomic_t *var, long i); -ERTS_GLB_INLINE void erts_atomic_set(erts_atomic_t *var, long i); -ERTS_GLB_INLINE long erts_atomic_read(erts_atomic_t *var); -ERTS_GLB_INLINE long erts_atomic_inctest(erts_atomic_t *incp); -ERTS_GLB_INLINE long erts_atomic_dectest(erts_atomic_t *decp); +ERTS_GLB_INLINE void erts_atomic_init(erts_atomic_t *var, erts_aint_t i); +ERTS_GLB_INLINE void erts_atomic_set(erts_atomic_t *var, erts_aint_t i); +ERTS_GLB_INLINE erts_aint_t erts_atomic_read(erts_atomic_t *var); +ERTS_GLB_INLINE erts_aint_t erts_atomic_inctest(erts_atomic_t *incp); +ERTS_GLB_INLINE erts_aint_t erts_atomic_dectest(erts_atomic_t *decp); ERTS_GLB_INLINE void erts_atomic_inc(erts_atomic_t *incp); ERTS_GLB_INLINE void erts_atomic_dec(erts_atomic_t *decp); -ERTS_GLB_INLINE long erts_atomic_addtest(erts_atomic_t *addp, - long i); -ERTS_GLB_INLINE void erts_atomic_add(erts_atomic_t *addp, long i); -ERTS_GLB_INLINE long erts_atomic_xchg(erts_atomic_t *xchgp, - long new); -ERTS_GLB_INLINE long erts_atomic_cmpxchg(erts_atomic_t *xchgp, - long new, - long expected); -ERTS_GLB_INLINE long erts_atomic_bor(erts_atomic_t *var, long mask); -ERTS_GLB_INLINE long erts_atomic_band(erts_atomic_t *var, long mask); -ERTS_GLB_INLINE long erts_atomic_read_acqb(erts_atomic_t *var); -ERTS_GLB_INLINE void erts_atomic_set_relb(erts_atomic_t *var, long i); +ERTS_GLB_INLINE erts_aint_t erts_atomic_addtest(erts_atomic_t *addp, + erts_aint_t i); +ERTS_GLB_INLINE void erts_atomic_add(erts_atomic_t *addp, erts_aint_t i); +ERTS_GLB_INLINE erts_aint_t erts_atomic_xchg(erts_atomic_t *xchgp, + erts_aint_t new); +ERTS_GLB_INLINE erts_aint_t erts_atomic_cmpxchg(erts_atomic_t *xchgp, + erts_aint_t new, + erts_aint_t expected); +ERTS_GLB_INLINE erts_aint_t erts_atomic_bor(erts_atomic_t *var, + erts_aint_t mask); +ERTS_GLB_INLINE erts_aint_t erts_atomic_band(erts_atomic_t *var, + erts_aint_t mask); +ERTS_GLB_INLINE erts_aint_t erts_atomic_read_acqb(erts_atomic_t *var); +ERTS_GLB_INLINE void erts_atomic_set_relb(erts_atomic_t *var, erts_aint_t i); ERTS_GLB_INLINE void erts_atomic_dec_relb(erts_atomic_t *decp); -ERTS_GLB_INLINE long erts_atomic_dectest_relb(erts_atomic_t *decp); -ERTS_GLB_INLINE long erts_atomic_cmpxchg_acqb(erts_atomic_t *xchgp, - long new, - long exp); -ERTS_GLB_INLINE long erts_atomic_cmpxchg_relb(erts_atomic_t *xchgp, - long new, - long exp); +ERTS_GLB_INLINE erts_aint_t erts_atomic_dectest_relb(erts_atomic_t *decp); +ERTS_GLB_INLINE erts_aint_t erts_atomic_cmpxchg_acqb(erts_atomic_t *xchgp, + erts_aint_t new, + erts_aint_t exp); +ERTS_GLB_INLINE erts_aint_t erts_atomic_cmpxchg_relb(erts_atomic_t *xchgp, + erts_aint_t new, + erts_aint_t exp); +ERTS_GLB_INLINE void erts_atomic32_init(erts_atomic32_t *var, erts_aint32_t i); +ERTS_GLB_INLINE void erts_atomic32_set(erts_atomic32_t *var, erts_aint32_t i); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_read(erts_atomic32_t *var); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_inctest(erts_atomic32_t *incp); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_dectest(erts_atomic32_t *decp); +ERTS_GLB_INLINE void erts_atomic32_inc(erts_atomic32_t *incp); +ERTS_GLB_INLINE void erts_atomic32_dec(erts_atomic32_t *decp); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_addtest(erts_atomic32_t *addp, + erts_aint32_t i); +ERTS_GLB_INLINE void erts_atomic32_add(erts_atomic32_t *addp, erts_aint32_t i); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_xchg(erts_atomic32_t *xchgp, + erts_aint32_t new); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_cmpxchg(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t expected); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_bor(erts_atomic32_t *var, + erts_aint32_t mask); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_band(erts_atomic32_t *var, + erts_aint32_t mask); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_read_acqb(erts_atomic32_t *var); +ERTS_GLB_INLINE void erts_atomic32_set_relb(erts_atomic32_t *var, + erts_aint32_t i); +ERTS_GLB_INLINE void erts_atomic32_dec_relb(erts_atomic32_t *decp); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_dectest_relb(erts_atomic32_t *decp); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_cmpxchg_acqb(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t exp); +ERTS_GLB_INLINE erts_aint32_t erts_atomic32_cmpxchg_relb(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t exp); ERTS_GLB_INLINE void erts_spinlock_init_x_opt(erts_spinlock_t *lock, char *name, Eterm extra, @@ -295,7 +340,6 @@ ERTS_GLB_INLINE void erts_write_lock(erts_rwlock_t *lock); ERTS_GLB_INLINE void erts_write_unlock(erts_rwlock_t *lock); ERTS_GLB_INLINE int erts_lc_rwlock_is_rlocked(erts_rwlock_t *lock); ERTS_GLB_INLINE int erts_lc_rwlock_is_rwlocked(erts_rwlock_t *lock); -ERTS_GLB_INLINE void erts_thr_time_now(erts_thr_timeval_t *time); ERTS_GLB_INLINE void erts_tsd_key_create(erts_tsd_key_t *keyp); ERTS_GLB_INLINE void erts_tsd_key_delete(erts_tsd_key_t key); ERTS_GLB_INLINE void erts_tsd_set(erts_tsd_key_t key, void *value); @@ -520,8 +564,16 @@ erts_mtx_destroy(erts_mtx_t *mtx) erts_lcnt_destroy_lock(&mtx->lcnt); #endif res = ethr_mutex_destroy(&mtx->mtx); - if (res) + if (res != 0) { +#ifdef ERTS_THR_HAVE_BUSY_DESTROY_BUG + if (res == EBUSY) { + char *warn = "Ignoring busy mutex destroy. " + "Most likely a bug in pthread implementation."; + erts_send_warning_to_logger_str_nogl(warn); + } +#endif erts_thr_fatal_error(res, "destroy mutex"); + } #endif } @@ -616,8 +668,16 @@ erts_cnd_destroy(erts_cnd_t *cnd) { #ifdef USE_THREADS int res = ethr_cond_destroy(cnd); - if (res) + if (res != 0) { +#ifdef ERTS_THR_HAVE_BUSY_DESTROY_BUG + if (res == EBUSY) { + char *warn = "Ignoring busy cond destroy. " + "Most likely a bug in pthread implementation."; + erts_send_warning_to_logger_str_nogl(warn); + } +#endif erts_thr_fatal_error(res, "destroy condition variable"); + } #endif } @@ -743,8 +803,16 @@ erts_rwmtx_destroy(erts_rwmtx_t *rwmtx) erts_lcnt_destroy_lock(&rwmtx->lcnt); #endif res = ethr_rwmutex_destroy(&rwmtx->rwmtx); - if (res != 0) + if (res != 0) { +#ifdef ERTS_THR_HAVE_BUSY_DESTROY_BUG + if (res == EBUSY) { + char *warn = "Ignoring busy rwmutex destroy. " + "Most likely a bug in pthread implementation."; + erts_send_warning_to_logger_str_nogl(warn); + } +#endif erts_thr_fatal_error(res, "destroy rwmutex"); + } #endif } @@ -928,7 +996,7 @@ erts_lc_rwmtx_is_rwlocked(erts_rwmtx_t *mtx) } ERTS_GLB_INLINE void -erts_atomic_init(erts_atomic_t *var, long i) +erts_atomic_init(erts_atomic_t *var, erts_aint_t i) { #ifdef USE_THREADS ethr_atomic_init(var, i); @@ -938,7 +1006,7 @@ erts_atomic_init(erts_atomic_t *var, long i) } ERTS_GLB_INLINE void -erts_atomic_set(erts_atomic_t *var, long i) +erts_atomic_set(erts_atomic_t *var, erts_aint_t i) { #ifdef USE_THREADS ethr_atomic_set(var, i); @@ -947,7 +1015,7 @@ erts_atomic_set(erts_atomic_t *var, long i) #endif } -ERTS_GLB_INLINE long +ERTS_GLB_INLINE erts_aint_t erts_atomic_read(erts_atomic_t *var) { #ifdef USE_THREADS @@ -957,7 +1025,7 @@ erts_atomic_read(erts_atomic_t *var) #endif } -ERTS_GLB_INLINE long +ERTS_GLB_INLINE erts_aint_t erts_atomic_inctest(erts_atomic_t *incp) { #ifdef USE_THREADS @@ -967,7 +1035,7 @@ erts_atomic_inctest(erts_atomic_t *incp) #endif } -ERTS_GLB_INLINE long +ERTS_GLB_INLINE erts_aint_t erts_atomic_dectest(erts_atomic_t *decp) { #ifdef USE_THREADS @@ -997,8 +1065,8 @@ erts_atomic_dec(erts_atomic_t *decp) #endif } -ERTS_GLB_INLINE long -erts_atomic_addtest(erts_atomic_t *addp, long i) +ERTS_GLB_INLINE erts_aint_t +erts_atomic_addtest(erts_atomic_t *addp, erts_aint_t i) { #ifdef USE_THREADS return ethr_atomic_add_read(addp, i); @@ -1008,7 +1076,7 @@ erts_atomic_addtest(erts_atomic_t *addp, long i) } ERTS_GLB_INLINE void -erts_atomic_add(erts_atomic_t *addp, long i) +erts_atomic_add(erts_atomic_t *addp, erts_aint_t i) { #ifdef USE_THREADS ethr_atomic_add(addp, i); @@ -1017,59 +1085,58 @@ erts_atomic_add(erts_atomic_t *addp, long i) #endif } -ERTS_GLB_INLINE long -erts_atomic_xchg(erts_atomic_t *xchgp, long new) +ERTS_GLB_INLINE erts_aint_t +erts_atomic_xchg(erts_atomic_t *xchgp, erts_aint_t new) { - long old; #ifdef USE_THREADS return ethr_atomic_xchg(xchgp, new); #else - old = *xchgp; + erts_aint_t old = *xchgp; *xchgp = new; -#endif return old; +#endif } -ERTS_GLB_INLINE long -erts_atomic_cmpxchg(erts_atomic_t *xchgp, long new, long expected) +ERTS_GLB_INLINE erts_aint_t +erts_atomic_cmpxchg(erts_atomic_t *xchgp, erts_aint_t new, erts_aint_t expected) { #ifdef USE_THREADS return ethr_atomic_cmpxchg(xchgp, new, expected); #else - long old = *xchgp; + erts_aint_t old = *xchgp; if (old == expected) *xchgp = new; return old; #endif } -ERTS_GLB_INLINE long -erts_atomic_bor(erts_atomic_t *var, long mask) +ERTS_GLB_INLINE erts_aint_t +erts_atomic_bor(erts_atomic_t *var, erts_aint_t mask) { #ifdef USE_THREADS return ethr_atomic_read_bor(var, mask); #else - long old; + erts_aint_t old; old = *var; *var |= mask; return old; #endif } -ERTS_GLB_INLINE long -erts_atomic_band(erts_atomic_t *var, long mask) +ERTS_GLB_INLINE erts_aint_t +erts_atomic_band(erts_atomic_t *var, erts_aint_t mask) { #ifdef USE_THREADS return ethr_atomic_read_band(var, mask); #else - long old; + erts_aint_t old; old = *var; *var &= mask; return old; #endif } -ERTS_GLB_INLINE long +ERTS_GLB_INLINE erts_aint_t erts_atomic_read_acqb(erts_atomic_t *var) { #ifdef USE_THREADS @@ -1080,7 +1147,7 @@ erts_atomic_read_acqb(erts_atomic_t *var) } ERTS_GLB_INLINE void -erts_atomic_set_relb(erts_atomic_t *var, long i) +erts_atomic_set_relb(erts_atomic_t *var, erts_aint_t i) { #ifdef USE_THREADS ethr_atomic_set_relb(var, i); @@ -1099,7 +1166,7 @@ erts_atomic_dec_relb(erts_atomic_t *decp) #endif } -ERTS_GLB_INLINE long +ERTS_GLB_INLINE erts_aint_t erts_atomic_dectest_relb(erts_atomic_t *decp) { #ifdef USE_THREADS @@ -1109,28 +1176,243 @@ erts_atomic_dectest_relb(erts_atomic_t *decp) #endif } -ERTS_GLB_INLINE long erts_atomic_cmpxchg_acqb(erts_atomic_t *xchgp, - long new, - long exp) +ERTS_GLB_INLINE erts_aint_t erts_atomic_cmpxchg_acqb(erts_atomic_t *xchgp, + erts_aint_t new, + erts_aint_t exp) { #ifdef USE_THREADS return ethr_atomic_cmpxchg_acqb(xchgp, new, exp); #else - long old = *xchgp; + erts_aint_t old = *xchgp; if (old == exp) *xchgp = new; return old; #endif } -ERTS_GLB_INLINE long erts_atomic_cmpxchg_relb(erts_atomic_t *xchgp, - long new, - long exp) +ERTS_GLB_INLINE erts_aint_t erts_atomic_cmpxchg_relb(erts_atomic_t *xchgp, + erts_aint_t new, + erts_aint_t exp) { #ifdef USE_THREADS return ethr_atomic_cmpxchg_relb(xchgp, new, exp); #else - long old = *xchgp; + erts_aint_t old = *xchgp; + if (old == exp) + *xchgp = new; + return old; +#endif +} + +/* atomic32 */ + +ERTS_GLB_INLINE void +erts_atomic32_init(erts_atomic32_t *var, erts_aint32_t i) +{ +#ifdef USE_THREADS + ethr_atomic32_init(var, i); +#else + *var = i; +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_set(erts_atomic32_t *var, erts_aint32_t i) +{ +#ifdef USE_THREADS + ethr_atomic32_set(var, i); +#else + *var = i; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_read(erts_atomic32_t *var) +{ +#ifdef USE_THREADS + return ethr_atomic32_read(var); +#else + return *var; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_inctest(erts_atomic32_t *incp) +{ +#ifdef USE_THREADS + return ethr_atomic32_inc_read(incp); +#else + return ++(*incp); +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_dectest(erts_atomic32_t *decp) +{ +#ifdef USE_THREADS + return ethr_atomic32_dec_read(decp); +#else + return --(*decp); +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_inc(erts_atomic32_t *incp) +{ +#ifdef USE_THREADS + ethr_atomic32_inc(incp); +#else + ++(*incp); +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_dec(erts_atomic32_t *decp) +{ +#ifdef USE_THREADS + ethr_atomic32_dec(decp); +#else + --(*decp); +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_addtest(erts_atomic32_t *addp, erts_aint32_t i) +{ +#ifdef USE_THREADS + return ethr_atomic32_add_read(addp, i); +#else + return *addp += i; +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_add(erts_atomic32_t *addp, erts_aint32_t i) +{ +#ifdef USE_THREADS + ethr_atomic32_add(addp, i); +#else + *addp += i; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_xchg(erts_atomic32_t *xchgp, erts_aint32_t new) +{ +#ifdef USE_THREADS + return ethr_atomic32_xchg(xchgp, new); +#else + erts_aint32_t old = *xchgp; + *xchgp = new; + return old; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_cmpxchg(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t expected) +{ +#ifdef USE_THREADS + return ethr_atomic32_cmpxchg(xchgp, new, expected); +#else + erts_aint32_t old = *xchgp; + if (old == expected) + *xchgp = new; + return old; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_bor(erts_atomic32_t *var, erts_aint32_t mask) +{ +#ifdef USE_THREADS + return ethr_atomic32_read_bor(var, mask); +#else + erts_aint32_t old; + old = *var; + *var |= mask; + return old; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_band(erts_atomic32_t *var, erts_aint32_t mask) +{ +#ifdef USE_THREADS + return ethr_atomic32_read_band(var, mask); +#else + erts_aint32_t old; + old = *var; + *var &= mask; + return old; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_read_acqb(erts_atomic32_t *var) +{ +#ifdef USE_THREADS + return ethr_atomic32_read_acqb(var); +#else + return *var; +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_set_relb(erts_atomic32_t *var, erts_aint32_t i) +{ +#ifdef USE_THREADS + ethr_atomic32_set_relb(var, i); +#else + *var = i; +#endif +} + +ERTS_GLB_INLINE void +erts_atomic32_dec_relb(erts_atomic32_t *decp) +{ +#ifdef USE_THREADS + ethr_atomic32_dec_relb(decp); +#else + --(*decp); +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_dectest_relb(erts_atomic32_t *decp) +{ +#ifdef USE_THREADS + return ethr_atomic32_dec_read_relb(decp); +#else + return --(*decp); +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_cmpxchg_acqb(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t exp) +{ +#ifdef USE_THREADS + return ethr_atomic32_cmpxchg_acqb(xchgp, new, exp); +#else + erts_aint32_t old = *xchgp; + if (old == exp) + *xchgp = new; + return old; +#endif +} + +ERTS_GLB_INLINE erts_aint32_t +erts_atomic32_cmpxchg_relb(erts_atomic32_t *xchgp, + erts_aint32_t new, + erts_aint32_t exp) +{ +#ifdef USE_THREADS + return ethr_atomic32_cmpxchg_relb(xchgp, new, exp); +#else + erts_aint32_t old = *xchgp; if (old == exp) *xchgp = new; return old; @@ -1207,8 +1489,16 @@ erts_spinlock_destroy(erts_spinlock_t *lock) erts_lcnt_destroy_lock(&lock->lcnt); #endif res = ethr_spinlock_destroy(&lock->slck); - if (res) - erts_thr_fatal_error(res, "destroy spinlock"); + if (res != 0) { +#ifdef ERTS_THR_HAVE_BUSY_DESTROY_BUG + if (res == EBUSY) { + char *warn = "Ignoring busy spinlock destroy. " + "Most likely a bug in pthread implementation."; + erts_send_warning_to_logger_str_nogl(warn); + } +#endif + erts_thr_fatal_error(res, "destroy rwlock"); + } #else (void)lock; #endif @@ -1317,8 +1607,16 @@ erts_rwlock_destroy(erts_rwlock_t *lock) erts_lcnt_destroy_lock(&lock->lcnt); #endif res = ethr_rwlock_destroy(&lock->rwlck); - if (res) + if (res != 0) { +#ifdef ERTS_THR_HAVE_BUSY_DESTROY_BUG + if (res == EBUSY) { + char *warn = "Ignoring busy rwlock destroy. " + "Most likely a bug in pthread implementation."; + erts_send_warning_to_logger_str_nogl(warn); + } +#endif erts_thr_fatal_error(res, "destroy rwlock"); + } #else (void)lock; #endif @@ -1431,16 +1729,6 @@ erts_lc_rwlock_is_rwlocked(erts_rwlock_t *lock) } ERTS_GLB_INLINE void -erts_thr_time_now(erts_thr_timeval_t *time) -{ -#ifdef USE_THREADS - int res = ethr_time_now(time); - if (res) - erts_thr_fatal_error(res, "get current time"); -#endif -} - -ERTS_GLB_INLINE void erts_tsd_key_create(erts_tsd_key_t *keyp) { #ifdef USE_THREADS |