source: libcfa/src/bits/defs.hfa @ 95dab9e

pthread-emulation
Last change on this file since 95dab9e was 95dab9e, checked in by Thierry Delisle <tdelisle@…>, 4 months ago

Changed real_pthread symbols (now cfaabi_pthread) to be protected in libcfathread

  • Property mode set to 100644
File size: 2.8 KB
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1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// defs.hfa -- Commen macros, functions and typedefs
8// Most files depend on them and they are always useful to have.
9//
10//  *** Must not contain code specific to libcfathread ***
11//
12// Author           : Thierry Delisle
13// Created On       : Thu Nov  9 13:24:10 2017
14// Last Modified By : Peter A. Buhr
15// Last Modified On : Sat Oct 24 10:53:15 2020
16// Update Count     : 21
17//
18
19#pragma once
20
21#include <stdint.h>
22#include <assert.h>
23#include <signal.h>
24
25#define likely(x)   __builtin_expect(!!(x), 1)
26#define unlikely(x) __builtin_expect(!!(x), 0)
27
28typedef void (*fptr_t)();
29typedef int_fast16_t __lock_size_t;
30
31#ifdef __cforall
32#define __cfa_anonymous_object(x) inline struct x
33#define __cfa_dlink(x) inline dlink(x)
34#else
35#define __cfa_anonymous_object(x) struct x __cfa_anonymous_object
36#define __cfa_dlink(x) struct { struct x * next; struct x * back; } __dlink_substitute
37#endif
38
39
40#if defined(__has_attribute)
41#if !__has_attribute(__noclone__)
42#define ATTRIBUTE_NOCLONE
43#endif
44#endif
45#ifndef ATTRIBUTE_NOCLONE
46#define ATTRIBUTE_NOCLONE __attribute__((__noclone__))
47#endif
48
49#define libcfa_public __attribute__((visibility("default")))
50#define libcfa_nopreempt __attribute__((section("cfatext_nopreempt"))) __attribute__((__noinline__)) ATTRIBUTE_NOCLONE
51
52struct __cfa_nopreempt_region {
53        void * start;
54        void * stop;
55};
56
57#ifdef __cforall
58void abort( const char fmt[], ... ) __attribute__ (( format(printf, 1, 2), __nothrow__, __leaf__, __noreturn__ ));
59void abort( bool signalAbort, const char fmt[], ... ) __attribute__ (( format(printf, 2, 3), __nothrow__, __leaf__, __noreturn__ ));
60extern "C" {
61void __cabi_abort( const char fmt[], ... ) __attribute__ (( format(printf, 1, 2), __nothrow__, __leaf__, __noreturn__ ));
62}
63#endif
64
65#if defined(__cforall_thread__)
66#define OPTIONAL_THREAD
67#else
68#define OPTIONAL_THREAD __attribute__((weak))
69#endif
70
71static inline long long int rdtscl(void) {
72        #if defined( __i386 ) || defined( __x86_64 )
73        unsigned int lo, hi;
74        __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
75        return ( (unsigned long long)lo)|( ((unsigned long long)hi)<<32 );
76        #elif defined( __aarch64__ ) || defined( __arm__ )
77        // https://github.com/google/benchmark/blob/v1.1.0/src/cycleclock.h#L116
78        long long int virtual_timer_value;
79        asm volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer_value));
80        return virtual_timer_value;
81        #else
82                #error unsupported hardware architecture
83        #endif
84}
85
86// pause to prevent excess processor bus usage
87#if defined( __i386 ) || defined( __x86_64 )
88        #define Pause() __asm__ __volatile__ ( "pause" : : : )
89#elif defined( __ARM_ARCH )
90        #define Pause() __asm__ __volatile__ ( "YIELD" : : : )
91#else
92        #error unsupported architecture
93#endif
94
95#define CFA_IO_LAZY (1_l64u << 32_l64u)
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