aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/sys.h
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/sys.h')
-rw-r--r--erts/emulator/beam/sys.h212
1 files changed, 188 insertions, 24 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 7740dd4373..d752ea4330 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2017. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -99,6 +99,12 @@
#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"
#else
@@ -481,18 +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
@@ -604,6 +602,8 @@ __decl_noreturn void __noreturn erts_exit(int n, char*, ...);
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);
@@ -859,9 +859,12 @@ 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 */
@@ -894,10 +897,13 @@ 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);
@@ -913,27 +919,51 @@ 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)
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)
erts_exit(ERTS_ABORT_EXIT,
@@ -947,20 +977,20 @@ 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)
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)
erts_exit(ERTS_ABORT_EXIT,
@@ -974,20 +1004,20 @@ 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)
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)
erts_exit(ERTS_ABORT_EXIT,
@@ -999,6 +1029,140 @@ 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