mirror of
https://github.com/fluencelabs/musl
synced 2025-06-30 15:11:55 +00:00
68630b55c0
the code being removed used atomics to track whether any threads might
be using a locale other than the current global locale, and whether
any threads might have abstract 8-bit (non-UTF-8) LC_CTYPE active, a
feature which was never committed (still pending). the motivations
were to support early execution prior to setup of the thread pointer,
to partially support systems (ancient kernels) where thread pointer
setup is not possible, and to avoid high performance cost on archs
where accessing the thread pointer may be very slow.
since commit 19a1fe670a, the thread
pointer is always available, so these hacks are no longer needed.
removing them greatly simplifies the affected code.
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#ifndef LIBC_H
|
|
#define LIBC_H
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <limits.h>
|
|
|
|
struct __locale_map;
|
|
|
|
struct __locale_struct {
|
|
volatile int ctype_utf8;
|
|
char *messages_name;
|
|
struct __locale_map *volatile cat[4];
|
|
};
|
|
|
|
struct __libc {
|
|
int can_do_threads;
|
|
int threaded;
|
|
int secure;
|
|
volatile int threads_minus_1;
|
|
size_t *auxv;
|
|
FILE *ofl_head;
|
|
volatile int ofl_lock[2];
|
|
size_t tls_size;
|
|
size_t page_size;
|
|
struct __locale_struct global_locale;
|
|
};
|
|
|
|
#ifndef PAGE_SIZE
|
|
#define PAGE_SIZE libc.page_size
|
|
#endif
|
|
|
|
#ifdef __PIC__
|
|
#define ATTR_LIBC_VISIBILITY __attribute__((visibility("hidden")))
|
|
#else
|
|
#define ATTR_LIBC_VISIBILITY
|
|
#endif
|
|
|
|
extern struct __libc __libc ATTR_LIBC_VISIBILITY;
|
|
#define libc __libc
|
|
|
|
extern size_t __hwcap ATTR_LIBC_VISIBILITY;
|
|
extern size_t __sysinfo ATTR_LIBC_VISIBILITY;
|
|
extern char *__progname, *__progname_full;
|
|
|
|
/* Designed to avoid any overhead in non-threaded processes */
|
|
void __lock(volatile int *) ATTR_LIBC_VISIBILITY;
|
|
void __unlock(volatile int *) ATTR_LIBC_VISIBILITY;
|
|
int __lockfile(FILE *) ATTR_LIBC_VISIBILITY;
|
|
void __unlockfile(FILE *) ATTR_LIBC_VISIBILITY;
|
|
#define LOCK(x) __lock(x)
|
|
#define UNLOCK(x) __unlock(x)
|
|
|
|
void __synccall(void (*)(void *), void *);
|
|
int __setxid(int, int, int, int);
|
|
|
|
extern char **__environ;
|
|
|
|
#undef weak_alias
|
|
#define weak_alias(old, new) \
|
|
extern __typeof(old) new __attribute__((weak, alias(#old)))
|
|
|
|
#undef LFS64_2
|
|
#define LFS64_2(x, y) weak_alias(x, y)
|
|
|
|
#undef LFS64
|
|
#define LFS64(x) LFS64_2(x, x##64)
|
|
|
|
#endif
|