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-rw-r--r--erts/emulator/beam/sys.h150
1 files changed, 122 insertions, 28 deletions
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index c29d4b3777..251b39508f 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -21,6 +21,25 @@
#define __SYS_H__
+#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
+
#if defined(VALGRIND) && !defined(NO_FPE_SIGNALS)
# define NO_FPE_SIGNALS
#endif
@@ -132,24 +151,8 @@ 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
@@ -188,6 +191,32 @@ __decl_noreturn void __noreturn erl_assert_error(const char* expr, const char *f
# define 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
@@ -359,17 +388,45 @@ typedef Sint SWord;
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
+# 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
+# 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
@@ -646,14 +703,43 @@ extern char *erts_default_arg0;
extern char os_type[];
-extern int sys_init_time(void);
+typedef enum {
+ ERTS_NO_TIME_WARP_MODE,
+ ERTS_SINGLE_TIME_WARP_MODE,
+ ERTS_MULTI_TIME_WARP_MODE
+} ErtsTimeWarpMode;
+
+typedef struct {
+ int have_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, (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 int erts_init_time_sup(int, ErtsTimeWarpMode);
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);
@@ -700,7 +786,7 @@ extern char *erts_sys_ddll_error(int code);
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
@@ -739,6 +825,7 @@ 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*);
+ErtsMonotonicTime erts_get_monotonic_time(void);
void get_sys_now(Uint*, Uint*, Uint*);
void set_break_quit(void (*)(void), void (*)(void));
@@ -756,6 +843,8 @@ typedef struct {
} 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);
@@ -784,6 +873,11 @@ int erts_sys_unsetenv(char *key);
char *erts_read_env(char *key);
void erts_free_read_env(void *value);
+#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);
+#endif
+
/* utils.c */
/* Options to sys_alloc_opt */