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Support thread local storage

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This commit is contained in:
Justine Tunney 2022-05-16 13:20:08 -07:00
parent 91ee2b19d4
commit 55de4ca6b5
197 changed files with 1483 additions and 874 deletions
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42
libc/time/localtime.c
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@ -5,6 +5,8 @@
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/intrin/spinlock.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/o.h"
#include "libc/time/time.h"
@ -179,17 +181,8 @@ static struct tm *localtime_timesub(time_t const *, int_fast32_t,
static bool localtime_typesequiv(struct state const *, int, int);
static bool localtime_tzparse(char const *, struct state *, struct state *);
#ifdef ALL_STATE
static struct state * lclptr;
static struct state * gmtptr;
#endif /* defined ALL_STATE */
#ifndef ALL_STATE
static struct state lclmem;
static struct state gmtmem;
#define lclptr (&lclmem)
#define gmtptr (&gmtmem)
#endif /* State Farm */
#ifndef TZ_STRLEN_MAX
#define TZ_STRLEN_MAX 255
@ -736,7 +729,6 @@ localtime_tzloadbody(char const *name, struct state *sp, bool doextend,
static int
localtime_tzload(char const *name, struct state *sp, bool doextend)
{
#ifdef ALL_STATE
union local_storage *lsp = malloc(sizeof *lsp);
if (!lsp) {
return HAVE_MALLOC_ERRNO ? errno : ENOMEM;
@ -745,17 +737,6 @@ localtime_tzload(char const *name, struct state *sp, bool doextend)
free(lsp);
return err;
}
#else
int i;
volatile char *p;
volatile unsigned x;
union local_storage ls; /* 70+ kilobytes */
p = (char *)&ls;
for (x = i = 0; i < sizeof(ls); i += 4096) {
x += p[i]; /* make sure tzdata doesn't smash the stack */
}
return localtime_tzloadbody(name, sp, doextend, &ls);
#endif
}
static bool
@ -1393,6 +1374,11 @@ zoneinit(struct state *sp, char const *name)
}
}
static void
FreeLocaltime(void *p) {
free(p);
}
static void
localtime_tzset_unlocked(void)
{
@ -1403,10 +1389,10 @@ localtime_tzset_unlocked(void)
? lcl_is_set < 0
: 0 < lcl_is_set && strcmp(lcl_TZname, name) == 0)
return;
#ifdef ALL_STATE
if (! sp)
if (!sp) {
lclptr = sp = malloc(sizeof *lclptr);
#endif /* defined ALL_STATE */
__cxa_atexit(FreeLocaltime, sp, 0);
}
if (sp) {
if (zoneinit(sp, name) != 0)
zoneinit(sp, "");
@ -1426,6 +1412,11 @@ tzset(void)
unlock();
}
static void
FreeGmt(void *p) {
free(p);
}
static void
localtime_gmtcheck(void)
{
@ -1433,9 +1424,8 @@ localtime_gmtcheck(void)
if (lock() != 0)
return;
if (! gmt_is_set) {
#ifdef ALL_STATE
gmtptr = malloc(sizeof *gmtptr);
#endif
__cxa_atexit(FreeGmt, gmtptr, 0);
if (gmtptr)
gmtload(gmtptr);
gmt_is_set = true;