ref: 86bca0a3d07504bb84ce163cba1ca01003c364ea
dir: /src/runtime/config-unix-64.h/
/* Copyright 2023 Lennart Augustsson
* See LICENSE file for full license.
*/
/*
* Various platform specific configuration.
*/
/*
* Include stdio functions.
* Without this none of the file I/O in System.IO is available.
*/
#define WANT_STDIO 1
/*
* Include ops for floating point arithmetic.
* Without this +,-,* etc will not be available for the Double type.
*/
#define WANT_FLOAT 1
/*
* Include <math.h>
* Without this exp,sin,sqrt etc will not be available.
*/
#define WANT_MATH 1
/*
* Include MD5 checksumming code
*/
#define WANT_MD5 1
/*
* Include profiling code
*/
#define WANT_TICK 1
/*
* Include directory manipulation
*/
#define WANT_DIR 1
/*
* Include time_t type
*/
#define WANT_TIME 1
/*
* Number of bits in a word. Only 32 and 64 are supported.
* WORD_SIZE set in mhsffi.h
*/
//#define WORD_SIZE 64
/*
* Find First Set
* This macro should be defined.
* It returns the number of the least significant bit that is set.
* Numberings starts from 1. If no bit is set, it should return 0.
*/
#if defined(__gnu_linux__) || defined(__APPLE__) || defined(__FreeBSD__)
/* Only some platforms have 64 bit ffsl function directly. */
#define FFS ffsl
#elif defined(__GNUC__)
/* GCC has ffsl as a builtin. */
#define FFS __builtin_ffsl
/* CLANG has ffsl as a builtin. */
#elif defined(__clang__) && __has_builtin(__builtin__ffsl)
#define FFS __builtin_ffsl
#endif
/*
* This is the character used for comma-separation in printf.
* Defaults to "'".
*/
/* #define PCOMMA "'" */
#include <inttypes.h>
#include <termios.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#if WANT_STDIO
#include <stdio.h>
#endif /* WANT_STDIO */
/*
* Set the terminal in raw mode and read a single character.
* Return this character, or -1 on any kind of failure.
*/
static int
getraw(void)
{
struct termios old, new;
char c;
int r;
#if defined(USE_SYSTEM_RAW)
/* For, e.g., execution with WASM in node the ioctl() doesn't seem to work */
system("stty raw");
r = read(0, &c, 1);
system("stty -raw");
#else /* USE_SYSTEM_RAW */
if (tcgetattr(0, &old)) {
#if WANT_STDIO
fprintf(stderr, "tcgetattr failed: errno=%d\n", errno);
#endif /* WANT_STDIO */
return -1;
}
new = old;
new.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
| INLCR | IGNCR | ICRNL | IXON);
new.c_oflag &= ~OPOST;
new.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
new.c_cflag &= ~(CSIZE | PARENB);
new.c_cflag |= CS8;
if (tcsetattr(0, TCSANOW, &new)) {
#if WANT_STDIO
fprintf(stderr, "tcsetattr 1 failed: errno=%d\n", errno);
#endif /* WANT_STDIO */
return -1;
}
r = read(0, &c, 1);
if (tcsetattr(0, TCSANOW, &old)) {
#if WANT_STDIO
fprintf(stderr, "tcsetattr 2 failed: errno=%d\n", errno);
#endif /* WANT_STDIO */
return -1;
}
#endif /* USE_SYSTEM_RAW */
if (r == 1)
return c;
else {
#if WANT_STDIO
fprintf(stderr, "read failed: errno=%d\n", errno);
#endif /* WANT_STDIO */
return -1;
}
}
/*
* Get a raw input character.
* If undefined, the default always returns -1
*/
#define GETRAW getraw
/*
* Get time since some epoch in milliseconds.
*/
#include <sys/time.h>
uintptr_t
gettimemilli(void)
{
struct timeval tv;
(void)gettimeofday(&tv, NULL);
return (uintptr_t)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
}
#define GETTIMEMILLI gettimemilli
/*
* Create a unique file name.
* This is a very dodgy implementation.
* XXX This functions drags in a lot of functionality.
*/
char*
tmpname(const char* pre, const char* suf)
{
int pid = (int)getpid();
char *tmp = getenv("TMPDIR");
const size_t PID_DIGITS = 10;
if (!tmp)
tmp = "/tmp";
char *s = malloc(strlen(tmp) + 1 + strlen(pre) + PID_DIGITS + strlen(suf) + 1);
/* This might loop forever. See if I care. :) */
for(;;) {
strcpy(s, tmp);
strcat(s, "/");
strcat(s, pre);
/* Insert PID_DIGITS digits of the PID */
char *p = s + strlen(s) + PID_DIGITS;
*p-- = 0;
for(int i = 0; i < PID_DIGITS; i++) {
*p-- = pid % 10 + '0';
pid /= 10;
}
strcat(s, suf);
/* The file name is ready, do a quick if check that we can create it */
int fd = open(s, O_CREAT | O_EXCL, 0600);
if (fd >= 0) {
close(fd); /* Close it again */
return s;
}
pid++; /* try with a different pid */
}
}
#define TMPNAME tmpname
/*
* The ERR macro should report an error and exit.
* If not defined, a generic one will be used.
*/
/* #define ERR(s) */
/* #define ERR1(s,a) */
#define GCRED 1 /* do some reductions during GC */
#define FASTTAGS 1 /* compute tag by pointer subtraction */
#define INTTABLE 1 /* use fixed table of small INT nodes */
#define SANITY 1 /* do some sanity checks */
#define STACKOVL 1 /* check for stack overflow */