diff options
Diffstat (limited to 'erts/emulator/beam/sys.h')
| -rw-r--r-- | erts/emulator/beam/sys.h | 631 |
1 files changed, 446 insertions, 185 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h index 05f07e57b2..704d567337 100644 --- a/erts/emulator/beam/sys.h +++ b/erts/emulator/beam/sys.h @@ -1,18 +1,19 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2013. All Rights Reserved. + * Copyright Ericsson AB 1996-2017. 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 - * compliance with the License. You should have received a copy of the - * Erlang Public License along with this software. If not, it can be - * retrieved online at http://www.erlang.org/. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - * the License for the specific language governing rights and limitations - * under the License. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * * %CopyrightEnd% */ @@ -20,27 +21,93 @@ #ifndef __SYS_H__ #define __SYS_H__ +#if !defined(__GNUC__) +# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) 0 +#elif !defined(__GNUC_MINOR__) +# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ + ((__GNUC__ << 24) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) +#elif !defined(__GNUC_PATCHLEVEL__) +# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ + (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12)) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) +#else +# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ + (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12) | __GNUC_PATCHLEVEL__) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) +#endif -#if defined(VALGRIND) && !defined(NO_FPE_SIGNALS) -# define NO_FPE_SIGNALS +#if defined(ERTS_DIRTY_SCHEDULERS) && !defined(ERTS_SMP) +# error "Dirty schedulers not supported without smp support" +#endif + +#ifdef ERTS_INLINE +# ifndef ERTS_CAN_INLINE +# define ERTS_CAN_INLINE 1 +# endif +#else +# if defined(__GNUC__) +# define ERTS_CAN_INLINE 1 +# define ERTS_INLINE __inline__ +# elif defined(__WIN32__) +# define ERTS_CAN_INLINE 1 +# define ERTS_INLINE __inline +# else +# define ERTS_CAN_INLINE 0 +# define ERTS_INLINE +# endif +#endif + +#ifndef ERTS_FORCE_INLINE +# if ERTS_AT_LEAST_GCC_VSN__(3,1,1) +# define ERTS_FORCE_INLINE __inline__ __attribute__((__always_inline__)) +# elif defined(__WIN32__) +# define ERTS_FORCE_INLINE __forceinline +# endif +# ifndef ERTS_FORCE_INLINE +# define ERTS_FORCE_INLINE ERTS_INLINE +# endif #endif -#ifdef DISABLE_CHILD_WAITER_THREAD -#undef ENABLE_CHILD_WAITER_THREAD +#if defined(DEBUG) || defined(ERTS_ENABLE_LOCK_CHECK) +# undef ERTS_CAN_INLINE +# define ERTS_CAN_INLINE 0 +# undef ERTS_INLINE +# define ERTS_INLINE #endif -#if defined(ERTS_SMP) && !defined(DISABLE_CHILD_WAITER_THREAD) -#undef ENABLE_CHILD_WAITER_THREAD -#define ENABLE_CHILD_WAITER_THREAD 1 +#if ERTS_CAN_INLINE +#define ERTS_GLB_FORCE_INLINE static ERTS_FORCE_INLINE +#define ERTS_GLB_INLINE static ERTS_INLINE +#else +#define ERTS_GLB_FORCE_INLINE +#define ERTS_GLB_INLINE +#endif + +#if ERTS_CAN_INLINE || defined(ERTS_DO_INCL_GLB_INLINE_FUNC_DEF) +# define ERTS_GLB_INLINE_INCL_FUNC_DEF 1 +#else +# define ERTS_GLB_INLINE_INCL_FUNC_DEF 0 +#endif + +#if defined(VALGRIND) && !defined(NO_FPE_SIGNALS) +# define NO_FPE_SIGNALS #endif #define ERTS_I64_LITERAL(X) X##LL +#define ErtsInArea(ptr,start,nbytes) \ + ((UWord)((char*)(ptr) - (char*)(start)) < (nbytes)) + +#define ErtsContainerStruct(ptr, type, member) \ + ((type *)((char *)(1 ? (ptr) : &((type *)0)->member) - offsetof(type, member))) + +/* Use this variant when the member is an array */ +#define ErtsContainerStruct_(ptr, type, memberv) \ + ((type *)((char *)(1 ? (ptr) : ((type *)0)->memberv) - offsetof(type, memberv))) + +#define ErtsSizeofMember(type, member) sizeof(((type *)0)->member) + #if defined (__WIN32__) # include "erl_win_sys.h" -#elif defined (__OSE__) -# include "erl_ose_sys.h" -#else +#else # include "erl_unix_sys.h" #ifndef UNIX # define UNIX 1 @@ -66,39 +133,13 @@ */ #ifndef ERTS_SYS_FD_TYPE +#define ERTS_SYS_FD_INVALID ((ErtsSysFdType) -1) typedef int ErtsSysFdType; #else -typedef ERTS_SYS_FD_TYPE ErtsSysFdType; -#endif - -#ifdef ERTS_INLINE -# ifndef ERTS_CAN_INLINE -# define ERTS_CAN_INLINE 1 -# endif -#else -# if defined(__GNUC__) -# define ERTS_CAN_INLINE 1 -# define ERTS_INLINE __inline__ -# elif defined(__WIN32__) -# define ERTS_CAN_INLINE 1 -# define ERTS_INLINE __inline -# else -# define ERTS_CAN_INLINE 0 -# define ERTS_INLINE -# endif +#ifndef ERTS_SYS_FD_INVALID +# error missing ERTS_SYS_FD_INVALID #endif - -#if !defined(__GNUC__) -# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) 0 -#elif !defined(__GNUC_MINOR__) -# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ - ((__GNUC__ << 24) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) -#elif !defined(__GNUC_PATCHLEVEL__) -# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ - (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12)) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) -#else -# define ERTS_AT_LEAST_GCC_VSN__(MAJ, MIN, PL) \ - (((__GNUC__ << 24) | (__GNUC_MINOR__ << 12) | __GNUC_PATCHLEVEL__) >= (((MAJ) << 24) | ((MIN) << 12) | (PL))) +typedef ERTS_SYS_FD_TYPE ErtsSysFdType; #endif #if ERTS_AT_LEAST_GCC_VSN__(2, 96, 0) @@ -108,8 +149,20 @@ typedef ERTS_SYS_FD_TYPE ErtsSysFdType; # define ERTS_LIKELY(BOOL) (BOOL) # define ERTS_UNLIKELY(BOOL) (BOOL) #endif + +#if ERTS_AT_LEAST_GCC_VSN__(2, 96, 0) +#if (defined(__APPLE__) && defined(__MACH__)) || defined(__DARWIN__) +# define ERTS_WRITE_UNLIKELY(X) X __attribute__ ((section ("__DATA,ERTS_LOW_WRITE") )) +#else +# define ERTS_WRITE_UNLIKELY(X) X __attribute__ ((section ("ERTS_LOW_WRITE") )) +#endif +#else +# define ERTS_WRITE_UNLIKELY(X) X +#endif + +/* clang may have too low __GNUC__ versions but can handle it */ #ifdef __GNUC__ -# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 5) +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 5) || defined(__clang__) # define ERTS_DECLARE_DUMMY(X) X __attribute__ ((unused)) # else # define ERTS_DECLARE_DUMMY(X) X @@ -128,24 +181,8 @@ typedef ERTS_SYS_FD_TYPE ErtsSysFdType; # endif #endif -#if defined(DEBUG) || defined(ERTS_ENABLE_LOCK_CHECK) -# undef ERTS_CAN_INLINE -# define ERTS_CAN_INLINE 0 -# undef ERTS_INLINE -# define ERTS_INLINE -#endif - -#if ERTS_CAN_INLINE -#define ERTS_GLB_INLINE static ERTS_INLINE -#else -#define ERTS_GLB_INLINE -#endif - -#if ERTS_CAN_INLINE || defined(ERTS_DO_INCL_GLB_INLINE_FUNC_DEF) -# define ERTS_GLB_INLINE_INCL_FUNC_DEF 1 -#else -# define ERTS_GLB_INLINE_INCL_FUNC_DEF 0 -#endif +#define ERTS_MK_VSN_INT(Major, Minor, Build) \ + ((((Major) & 0x3ff) << 20) | (((Minor) & 0x3ff) << 10) | ((Build) & 0x3ff)) #ifndef ERTS_EXIT_AFTER_DUMP # define ERTS_EXIT_AFTER_DUMP exit @@ -184,6 +221,38 @@ __decl_noreturn void __noreturn erl_assert_error(const char* expr, const char *f # define ASSERT(e) ((void) 1) #endif +#ifdef ERTS_SMP +# define ERTS_SMP_ASSERT(e) ASSERT(e) +#else +# define ERTS_SMP_ASSERT(e) ((void)1) +#endif + +/* ERTS_UNDEF can be used to silence false warnings about + * "variable may be used uninitialized" while keeping the variable + * marked as undefined by valgrind. + */ +#ifdef VALGRIND +# define ERTS_UNDEF(V,I) +#else +# define ERTS_UNDEF(V,I) V = I +#endif + +/* + * Compile time assert + * (the actual compiler error msg can be a bit confusing) + */ +#if ERTS_AT_LEAST_GCC_VSN__(3,1,1) +# define ERTS_CT_ASSERT(e) \ + do { \ + enum { compile_time_assert__ = __builtin_choose_expr((e),0,(void)0) }; \ + } while(0) +#else +# define ERTS_CT_ASSERT(e) \ + do { \ + enum { compile_time_assert__ = 1/(e) }; \ + } while (0) +#endif + /* * Microsoft C/C++: We certainly want to use stdarg.h and prototypes. * But MSC doesn't define __STDC__, unless we compile with the -Za @@ -252,61 +321,11 @@ __decl_noreturn void __noreturn erl_assert_error(const char* expr, const char *f #else #error Neither 32 nor 64 bit architecture #endif -#if defined(ARCH_64) && defined(HALFWORD_HEAP_EMULATOR) -# define HALFWORD_HEAP 1 -# define HALFWORD_ASSERT 0 -# define ASSERT_HALFWORD(COND) ASSERT(COND) -# undef ERTS_SIZEOF_TERM -# define ERTS_SIZEOF_TERM 4 -#else -# define HALFWORD_HEAP 0 -# define HALFWORD_ASSERT 0 -# define ASSERT_HALFWORD(COND) -#endif #if SIZEOF_VOID_P != SIZEOF_SIZE_T #error sizeof(void*) != sizeof(size_t) #endif -#if HALFWORD_HEAP - -#if SIZEOF_INT == 4 -typedef unsigned int Eterm; -typedef unsigned int Uint; -typedef int Sint; -#define ERTS_SIZEOF_ETERM SIZEOF_INT -#define ErtsStrToSint strtol -#else -#error Found no appropriate type to use for 'Eterm', 'Uint' and 'Sint' -#endif - -#if SIZEOF_VOID_P == SIZEOF_LONG -typedef unsigned long UWord; -typedef long SWord; -#define SWORD_CONSTANT(Const) Const##L -#define UWORD_CONSTANT(Const) Const##UL -#define ERTS_UWORD_MAX ULONG_MAX -#define ERTS_SWORD_MAX LONG_MAX -#elif SIZEOF_VOID_P == SIZEOF_INT -typedef unsigned int UWord; -typedef int SWord; -#define SWORD_CONSTANT(Const) Const -#define UWORD_CONSTANT(Const) Const##U -#define ERTS_UWORD_MAX UINT_MAX -#define ERTS_SWORD_MAX INT_MAX -#elif SIZEOF_VOID_P == SIZEOF_LONG_LONG -typedef unsigned long long UWord; -typedef long long SWord; -#define SWORD_CONSTANT(Const) Const##LL -#define UWORD_CONSTANT(Const) Const##ULL -#define ERTS_UWORD_MAX ULLONG_MAX -#define ERTS_SWORD_MAX LLONG_MAX -#else -#error Found no appropriate type to use for 'Eterm', 'Uint' and 'Sint' -#endif - -#else /* !HALFWORD_HEAP */ - #if SIZEOF_VOID_P == SIZEOF_LONG typedef unsigned long Eterm; typedef unsigned long Uint; @@ -347,23 +366,52 @@ typedef long long Sint; typedef Uint UWord; typedef Sint SWord; - -#endif /* HALFWORD_HEAP */ +#define ERTS_UINT_MAX ERTS_UWORD_MAX typedef UWord BeamInstr; #ifndef HAVE_INT64 -#if SIZEOF_LONG == 8 -#define HAVE_INT64 1 +# if SIZEOF_LONG == 8 +# define HAVE_INT64 1 typedef unsigned long Uint64; typedef long Sint64; -#elif SIZEOF_LONG_LONG == 8 -#define HAVE_INT64 1 +# ifdef ULONG_MAX +# define ERTS_UINT64_MAX ULONG_MAX +# endif +# ifdef LONG_MAX +# define ERTS_SINT64_MAX LONG_MAX +# endif +# ifdef LONG_MIN +# define ERTS_SINT64_MIN LONG_MIN +# endif +# define ErtsStrToSint64 strtol +# elif SIZEOF_LONG_LONG == 8 +# define HAVE_INT64 1 typedef unsigned long long Uint64; typedef long long Sint64; -#else -#define HAVE_INT64 0 +# ifdef ULLONG_MAX +# define ERTS_UINT64_MAX ULLONG_MAX +# endif +# ifdef LLONG_MAX +# define ERTS_SINT64_MAX LLONG_MAX +# endif +# ifdef LLONG_MIN +# define ERTS_SINT64_MIN LLONG_MIN +# endif +# define ErtsStrToSint64 strtoll +# else +# error "No 64-bit integer type found" +# endif #endif + +#ifndef ERTS_UINT64_MAX +# define ERTS_UINT64_MAX (~((Uint64) 0)) +#endif +#ifndef ERTS_SINT64_MAX +# define ERTS_SINT64_MAX ((Sint64) ((((Uint64) 1) << 63)-1)) +#endif +#ifndef ERTS_SINT64_MIN +# define ERTS_SINT64_MIN (-1*(((Sint64) 1) << 63)) #endif #if SIZEOF_LONG == 4 @@ -439,18 +487,10 @@ extern volatile int erts_break_requested; void erts_do_break_handling(void); #endif -#ifdef ERTS_WANT_GOT_SIGUSR1 -# ifndef UNIX -# define ERTS_GOT_SIGUSR1 0 -# else -# ifdef ERTS_SMP -extern erts_smp_atomic32_t erts_got_sigusr1; -# define ERTS_GOT_SIGUSR1 ((int) erts_smp_atomic32_read_mb(&erts_got_sigusr1)) -# else -extern volatile int erts_got_sigusr1; -# define ERTS_GOT_SIGUSR1 erts_got_sigusr1 -# endif -# endif +#if !defined(ERTS_SMP) && !defined(__WIN32__) +extern volatile Uint erts_signal_state; +#define ERTS_SIGNAL_STATE erts_signal_state +void erts_handle_signal_state(void); #endif #ifdef ERTS_SMP @@ -499,7 +539,7 @@ extern volatile int erts_writing_erl_crash_dump; # define NO_ERF # define NO_ERFC /* This definition doesn't take NaN into account, but matherr() gets those */ -# define finite(x) (fabs(x) != HUGE_VAL) +# define isfinite(x) (fabs(x) != HUGE_VAL) # define USE_MATHERR # define HAVE_FINITE #endif @@ -548,19 +588,22 @@ static unsigned long zero_value = 0, one_value = 1; # endif /* !__WIN32__ */ #endif /* WANT_NONBLOCKING */ -__decl_noreturn void __noreturn erl_exit(int n, char*, ...); +__decl_noreturn void __noreturn erts_exit(int n, char*, ...); -/* Some special erl_exit() codes: */ -#define ERTS_INTR_EXIT INT_MIN /* called from signal handler */ -#define ERTS_ABORT_EXIT (INT_MIN + 1) /* no crash dump; only abort() */ -#define ERTS_DUMP_EXIT (INT_MIN + 2) /* crash dump; then exit() */ +/* Some special erts_exit() codes: */ +#define ERTS_INTR_EXIT -1 /* called from signal handler */ +#define ERTS_ABORT_EXIT -2 /* no crash dump; only abort() */ +#define ERTS_DUMP_EXIT -3 /* crash dump; then exit() */ +#define ERTS_ERROR_EXIT -4 /* crash dump; then abort() */ #define ERTS_INTERNAL_ERROR(What) \ - erl_exit(ERTS_ABORT_EXIT, "%s:%d:%s(): Internal error: %s\n", \ + erts_exit(ERTS_ABORT_EXIT, "%s:%d:%s(): Internal error: %s\n", \ __FILE__, __LINE__, __func__, What) Eterm erts_check_io_info(void *p); +UWord erts_sys_get_page_size(void); + /* Size of misc memory allocated from system dependent code */ Uint erts_sys_misc_mem_sz(void); @@ -569,23 +612,21 @@ Uint erts_sys_misc_mem_sz(void); #include "erl_printf.h" /* Io constants to erts_print and erts_putc */ -#define ERTS_PRINT_STDERR (2) -#define ERTS_PRINT_STDOUT (1) -#define ERTS_PRINT_INVALID (0) /* Don't want to use 0 since CBUF was 0 */ -#define ERTS_PRINT_FILE (-1) -#define ERTS_PRINT_SBUF (-2) -#define ERTS_PRINT_SNBUF (-3) -#define ERTS_PRINT_DSBUF (-4) - -#define ERTS_PRINT_MIN ERTS_PRINT_DSBUF +#define ERTS_PRINT_STDERR ((fmtfn_t)0) +#define ERTS_PRINT_STDOUT ((fmtfn_t)1) +#define ERTS_PRINT_FILE ((fmtfn_t)2) +#define ERTS_PRINT_SBUF ((fmtfn_t)3) +#define ERTS_PRINT_SNBUF ((fmtfn_t)4) +#define ERTS_PRINT_DSBUF ((fmtfn_t)5) +#define ERTS_PRINT_FD ((fmtfn_t)6) typedef struct { char *buf; size_t size; } erts_print_sn_buf; -int erts_print(int to, void *arg, char *format, ...); /* in utils.c */ -int erts_putc(int to, void *arg, char); /* in utils.c */ +int erts_print(fmtfn_t to, void *arg, char *format, ...); /* in utils.c */ +int erts_putc(fmtfn_t to, void *arg, char); /* in utils.c */ /* logger stuff is declared here instead of in global.h, so sys files won't have to include global.h */ @@ -594,6 +635,7 @@ erts_dsprintf_buf_t *erts_create_logger_dsbuf(void); int erts_send_info_to_logger(Eterm, erts_dsprintf_buf_t *); int erts_send_warning_to_logger(Eterm, erts_dsprintf_buf_t *); int erts_send_error_to_logger(Eterm, erts_dsprintf_buf_t *); +int erts_send_error_term_to_logger(Eterm, erts_dsprintf_buf_t *, Eterm); int erts_send_info_to_logger_str(Eterm, char *); int erts_send_warning_to_logger_str(Eterm, char *); int erts_send_error_to_logger_str(Eterm, char *); @@ -611,6 +653,15 @@ typedef struct preload { unsigned char* code; /* Code pointer */ } Preload; +/* + * ErtsTracer is either NIL, 'true' or [Mod | State] + * + * If set to NIL, it means no tracer. + * If set to 'true' it means the current process' tracer. + * If set to [Mod | State], there is a tracer. + * See erts_tracer_update for more details + */ +typedef Eterm ErtsTracer; /* * This structure contains options to all built in drivers. @@ -640,14 +691,37 @@ extern char *erts_default_arg0; extern char os_type[]; -extern int sys_init_time(void); +typedef struct { + int have_os_monotonic_time; + int have_corrected_os_monotonic_time; + ErtsMonotonicTime os_monotonic_time_unit; + ErtsMonotonicTime sys_clock_resolution; + struct { + Uint64 resolution; + char *func; + char *clock_id; + int locked_use; + int extended; + } os_monotonic_time_info; + struct { + Uint64 resolution; + char *func; + char *clock_id; + int locked_use; + } os_system_time_info; +} ErtsSysInitTimeResult; + +#define ERTS_SYS_INIT_TIME_RESULT_INITER \ + {0, 0, (ErtsMonotonicTime) -1, (ErtsMonotonicTime) 1} + +extern void erts_init_sys_time_sup(void); +extern void sys_init_time(ErtsSysInitTimeResult *); +extern void erts_late_sys_init_time(void); extern void erts_deliver_time(void); extern void erts_time_remaining(SysTimeval *); -extern int erts_init_time_sup(void); extern void erts_sys_init_float(void); extern void erts_thread_init_float(void); extern void erts_thread_disable_fpe(void); - ERTS_GLB_INLINE int erts_block_fpe(void); ERTS_GLB_INLINE void erts_unblock_fpe(int); @@ -690,17 +764,16 @@ extern char *erts_sys_ddll_error(int code); /* * System interfaces for startup. */ -#include "erl_time.h" - void erts_sys_schedule_interrupt(int set); #ifdef ERTS_SMP -void erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec); +void erts_sys_schedule_interrupt_timed(int, ErtsMonotonicTime); void erts_sys_main_thread(void); #endif extern int erts_sys_prepare_crash_dump(int secs); extern void erts_sys_pre_init(void); extern void erl_sys_init(void); +extern void erl_sys_late_init(void); extern void erl_sys_args(int *argc, char **argv); extern void erl_sys_schedule(int); void sys_tty_reset(int); @@ -711,10 +784,6 @@ Preload* sys_preloaded(void); unsigned char* sys_preload_begin(Preload*); void sys_preload_end(Preload*); int sys_get_key(int); -void elapsed_time_both(UWord *ms_user, UWord *ms_sys, - UWord *ms_user_diff, UWord *ms_sys_diff); -void wall_clock_elapsed_time_both(UWord *ms_total, - UWord *ms_diff); void get_time(int *hour, int *minute, int *second); void get_date(int *year, int *month, int *day); void get_localtime(int *year, int *month, int *day, @@ -733,6 +802,12 @@ int univ_to_local( int local_to_univ(Sint *year, Sint *month, Sint *day, Sint *hour, Sint *minute, Sint *second, int isdst); void get_now(Uint*, Uint*, Uint*); +struct ErtsSchedulerData_; +ErtsMonotonicTime erts_get_monotonic_time(struct ErtsSchedulerData_ *); +ErtsMonotonicTime erts_get_time_offset(void); +void +erts_make_timestamp_value(Uint* megasec, Uint* sec, Uint* microsec, + ErtsMonotonicTime mtime, ErtsMonotonicTime offset); void get_sys_now(Uint*, Uint*, Uint*); void set_break_quit(void (*)(void), void (*)(void)); @@ -742,6 +817,16 @@ void init_getenv_state(GETENV_STATE *); char * getenv_string(GETENV_STATE *); void fini_getenv_state(GETENV_STATE *); +#define HAVE_ERTS_CHECK_IO_DEBUG +typedef struct { + int no_used_fds; + int no_driver_select_structs; + int no_driver_event_structs; +} ErtsCheckIoDebugInfo; +int erts_check_io_debug(ErtsCheckIoDebugInfo *ip); + +int erts_sys_is_area_readable(char *start, char *stop); + /* xxxP */ #define SYS_DEFAULT_FLOAT_DECIMALS 20 void init_sys_float(void); @@ -770,6 +855,14 @@ int erts_sys_unsetenv(char *key); char *erts_read_env(char *key); void erts_free_read_env(void *value); +#if defined(ERTS_SMP) +#if defined(ERTS_THR_HAVE_SIG_FUNCS) && !defined(ETHR_UNUSABLE_SIGUSRX) +extern void sys_thr_resume(erts_tid_t tid); +extern void sys_thr_suspend(erts_tid_t tid); +#define ERTS_SYS_SUSPEND_SIGNAL SIGUSR2 +#endif +#endif + /* utils.c */ /* Options to sys_alloc_opt */ @@ -800,10 +893,13 @@ void sys_alloc_stat(SysAllocStat *); #define ERTS_REFC_DEBUG #endif -typedef erts_smp_atomic_t erts_refc_t; +typedef erts_atomic_t erts_refc_t; ERTS_GLB_INLINE void erts_refc_init(erts_refc_t *refcp, erts_aint_t val); ERTS_GLB_INLINE void erts_refc_inc(erts_refc_t *refcp, erts_aint_t min_val); +ERTS_GLB_INLINE erts_aint_t erts_refc_inc_unless(erts_refc_t *refcp, + erts_aint_t unless_val, + erts_aint_t min_val); ERTS_GLB_INLINE erts_aint_t erts_refc_inctest(erts_refc_t *refcp, erts_aint_t min_val); ERTS_GLB_INLINE void erts_refc_dec(erts_refc_t *refcp, erts_aint_t min_val); @@ -819,30 +915,54 @@ ERTS_GLB_INLINE erts_aint_t erts_refc_read(erts_refc_t *refcp, ERTS_GLB_INLINE void erts_refc_init(erts_refc_t *refcp, erts_aint_t val) { - erts_smp_atomic_init_nob((erts_smp_atomic_t *) refcp, val); + erts_atomic_init_nob((erts_atomic_t *) refcp, val); } ERTS_GLB_INLINE void erts_refc_inc(erts_refc_t *refcp, erts_aint_t min_val) { #ifdef ERTS_REFC_DEBUG - erts_aint_t val = erts_smp_atomic_inc_read_nob((erts_smp_atomic_t *) refcp); + erts_aint_t val = erts_atomic_inc_read_nob((erts_atomic_t *) refcp); if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_inc(): Bad refc found (refc=%ld < %ld)!\n", val, min_val); #else - erts_smp_atomic_inc_nob((erts_smp_atomic_t *) refcp); + erts_atomic_inc_nob((erts_atomic_t *) refcp); #endif } ERTS_GLB_INLINE erts_aint_t +erts_refc_inc_unless(erts_refc_t *refcp, + erts_aint_t unless_val, + erts_aint_t min_val) +{ + erts_aint_t val = erts_atomic_read_nob((erts_atomic_t *) refcp); + while (1) { + erts_aint_t exp, new; +#ifdef ERTS_REFC_DEBUG + if (val < 0) + erts_exit(ERTS_ABORT_EXIT, + "erts_refc_inc_unless(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#endif + if (val == unless_val) + return val; + new = val + 1; + exp = val; + val = erts_atomic_cmpxchg_nob((erts_atomic_t *) refcp, new, exp); + if (val == exp) + return new; + } +} + +ERTS_GLB_INLINE erts_aint_t erts_refc_inctest(erts_refc_t *refcp, erts_aint_t min_val) { - erts_aint_t val = erts_smp_atomic_inc_read_nob((erts_smp_atomic_t *) refcp); + erts_aint_t val = erts_atomic_inc_read_nob((erts_atomic_t *) refcp); #ifdef ERTS_REFC_DEBUG if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_inctest(): Bad refc found (refc=%ld < %ld)!\n", val, min_val); #endif @@ -853,23 +973,23 @@ ERTS_GLB_INLINE void erts_refc_dec(erts_refc_t *refcp, erts_aint_t min_val) { #ifdef ERTS_REFC_DEBUG - erts_aint_t val = erts_smp_atomic_dec_read_nob((erts_smp_atomic_t *) refcp); + erts_aint_t val = erts_atomic_dec_read_nob((erts_atomic_t *) refcp); if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_dec(): Bad refc found (refc=%ld < %ld)!\n", val, min_val); #else - erts_smp_atomic_dec_nob((erts_smp_atomic_t *) refcp); + erts_atomic_dec_nob((erts_atomic_t *) refcp); #endif } ERTS_GLB_INLINE erts_aint_t erts_refc_dectest(erts_refc_t *refcp, erts_aint_t min_val) { - erts_aint_t val = erts_smp_atomic_dec_read_nob((erts_smp_atomic_t *) refcp); + erts_aint_t val = erts_atomic_dec_read_nob((erts_atomic_t *) refcp); #ifdef ERTS_REFC_DEBUG if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_dectest(): Bad refc found (refc=%ld < %ld)!\n", val, min_val); #endif @@ -880,23 +1000,23 @@ ERTS_GLB_INLINE void erts_refc_add(erts_refc_t *refcp, erts_aint_t diff, erts_aint_t min_val) { #ifdef ERTS_REFC_DEBUG - erts_aint_t val = erts_smp_atomic_add_read_nob((erts_smp_atomic_t *) refcp, diff); + erts_aint_t val = erts_atomic_add_read_nob((erts_atomic_t *) refcp, diff); if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_add(%ld): Bad refc found (refc=%ld < %ld)!\n", diff, val, min_val); #else - erts_smp_atomic_add_nob((erts_smp_atomic_t *) refcp, diff); + erts_atomic_add_nob((erts_atomic_t *) refcp, diff); #endif } ERTS_GLB_INLINE erts_aint_t erts_refc_read(erts_refc_t *refcp, erts_aint_t min_val) { - erts_aint_t val = erts_smp_atomic_read_nob((erts_smp_atomic_t *) refcp); + erts_aint_t val = erts_atomic_read_nob((erts_atomic_t *) refcp); #ifdef ERTS_REFC_DEBUG if (val < min_val) - erl_exit(ERTS_ABORT_EXIT, + erts_exit(ERTS_ABORT_EXIT, "erts_refc_read(): Bad refc found (refc=%ld < %ld)!\n", val, min_val); #endif @@ -905,6 +1025,140 @@ erts_refc_read(erts_refc_t *refcp, erts_aint_t min_val) #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */ +typedef erts_smp_atomic_t erts_smp_refc_t; + +ERTS_GLB_INLINE void erts_smp_refc_init(erts_smp_refc_t *refcp, erts_aint_t val); +ERTS_GLB_INLINE void erts_smp_refc_inc(erts_smp_refc_t *refcp, erts_aint_t min_val); +ERTS_GLB_INLINE erts_aint_t erts_smp_refc_inc_unless(erts_smp_refc_t *refcp, + erts_aint_t unless_val, + erts_aint_t min_val); +ERTS_GLB_INLINE erts_aint_t erts_smp_refc_inctest(erts_smp_refc_t *refcp, + erts_aint_t min_val); +ERTS_GLB_INLINE void erts_smp_refc_dec(erts_smp_refc_t *refcp, erts_aint_t min_val); +ERTS_GLB_INLINE erts_aint_t erts_smp_refc_dectest(erts_smp_refc_t *refcp, + erts_aint_t min_val); +ERTS_GLB_INLINE void erts_smp_refc_add(erts_smp_refc_t *refcp, erts_aint_t diff, + erts_aint_t min_val); +ERTS_GLB_INLINE erts_aint_t erts_smp_refc_read(erts_smp_refc_t *refcp, + erts_aint_t min_val); + +#if ERTS_GLB_INLINE_INCL_FUNC_DEF + +ERTS_GLB_INLINE void +erts_smp_refc_init(erts_smp_refc_t *refcp, erts_aint_t val) +{ + erts_smp_atomic_init_nob((erts_smp_atomic_t *) refcp, val); +} + +ERTS_GLB_INLINE void +erts_smp_refc_inc(erts_smp_refc_t *refcp, erts_aint_t min_val) +{ +#ifdef ERTS_REFC_DEBUG + erts_aint_t val = erts_smp_atomic_inc_read_nob((erts_smp_atomic_t *) refcp); + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_inc(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#else + erts_smp_atomic_inc_nob((erts_smp_atomic_t *) refcp); +#endif +} + +ERTS_GLB_INLINE erts_aint_t +erts_smp_refc_inc_unless(erts_smp_refc_t *refcp, + erts_aint_t unless_val, + erts_aint_t min_val) +{ + erts_aint_t val = erts_smp_atomic_read_nob((erts_smp_atomic_t *) refcp); + while (1) { + erts_aint_t exp, new; +#ifdef ERTS_REFC_DEBUG + if (val < 0) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_inc_unless(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#endif + if (val == unless_val) + return val; + new = val + 1; + exp = val; + val = erts_smp_atomic_cmpxchg_nob((erts_smp_atomic_t *) refcp, new, exp); + if (val == exp) + return new; + } +} + + +ERTS_GLB_INLINE erts_aint_t +erts_smp_refc_inctest(erts_smp_refc_t *refcp, erts_aint_t min_val) +{ + erts_aint_t val = erts_smp_atomic_inc_read_nob((erts_smp_atomic_t *) refcp); +#ifdef ERTS_REFC_DEBUG + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_inctest(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#endif + return val; +} + +ERTS_GLB_INLINE void +erts_smp_refc_dec(erts_smp_refc_t *refcp, erts_aint_t min_val) +{ +#ifdef ERTS_REFC_DEBUG + erts_aint_t val = erts_smp_atomic_dec_read_nob((erts_smp_atomic_t *) refcp); + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_dec(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#else + erts_smp_atomic_dec_nob((erts_smp_atomic_t *) refcp); +#endif +} + +ERTS_GLB_INLINE erts_aint_t +erts_smp_refc_dectest(erts_smp_refc_t *refcp, erts_aint_t min_val) +{ + erts_aint_t val = erts_smp_atomic_dec_read_nob((erts_smp_atomic_t *) refcp); +#ifdef ERTS_REFC_DEBUG + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_dectest(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#endif + return val; +} + +ERTS_GLB_INLINE void +erts_smp_refc_add(erts_smp_refc_t *refcp, erts_aint_t diff, erts_aint_t min_val) +{ +#ifdef ERTS_REFC_DEBUG + erts_aint_t val = erts_smp_atomic_add_read_nob((erts_smp_atomic_t *) refcp, diff); + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_add(%ld): Bad refc found (refc=%ld < %ld)!\n", + diff, val, min_val); +#else + erts_smp_atomic_add_nob((erts_smp_atomic_t *) refcp, diff); +#endif +} + +ERTS_GLB_INLINE erts_aint_t +erts_smp_refc_read(erts_smp_refc_t *refcp, erts_aint_t min_val) +{ + erts_aint_t val = erts_smp_atomic_read_nob((erts_smp_atomic_t *) refcp); +#ifdef ERTS_REFC_DEBUG + if (val < min_val) + erts_exit(ERTS_ABORT_EXIT, + "erts_smp_refc_read(): Bad refc found (refc=%ld < %ld)!\n", + val, min_val); +#endif + return val; +} + +#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */ + + #ifdef ERTS_ENABLE_KERNEL_POLL extern int erts_use_kernel_poll; #endif @@ -997,7 +1251,6 @@ extern int erts_use_kernel_poll; #define put_int8(i, s) do {((unsigned char*)(s))[0] = (i) & 0xff;} while (0) - /* * Use DEBUGF as you would use printf, but use double parentheses: * @@ -1015,6 +1268,14 @@ void erl_bin_write(unsigned char *, int, int); # define DEBUGF(x) #endif +#ifndef MAX +#define MAX(A, B) ((A) > (B) ? (A) : (B)) +#endif + +#ifndef MIN +#define MIN(A, B) ((A) < (B) ? (A) : (B)) +#endif + #ifdef __WIN32__ #ifdef ARCH_64 #define ERTS_ALLOC_ALIGN_BYTES 16 |