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Dropping the POSIX thread-local variables in favor of much easier-to-use C11 thread-local variables

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This commit is contained in:
Maria Matejka
2021-06-18 18:10:42 +02:00
parent b5061659d3
commit feb17ced23
3 changed files with 29 additions and 72 deletions
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47
lib/timer.c
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@@ -43,38 +43,23 @@ struct timeloop main_timeloop;
#include <pthread.h>
/* Data accessed and modified from proto/bfd/io.c */
pthread_key_t current_time_key;
static inline struct timeloop *
timeloop_current(void)
{
return pthread_getspecific(current_time_key);
}
static inline void
timeloop_init_current(void)
{
pthread_key_create(&current_time_key, NULL);
pthread_setspecific(current_time_key, &main_timeloop);
}
_Thread_local struct timeloop *local_timeloop;
void wakeup_kick_current(void);
btime
current_time(void)
{
return timeloop_current()->last_time;
return local_timeloop->last_time;
}
btime
current_real_time(void)
{
struct timeloop *loop = timeloop_current();
if (!local_timeloop->real_time)
times_update_real_time(local_timeloop);
if (!loop->real_time)
times_update_real_time(loop);
return loop->real_time;
return local_timeloop->real_time;
}
@@ -128,30 +113,29 @@ tm_new(pool *p)
void
tm_set(timer *t, btime when)
{
struct timeloop *loop = timeloop_current();
uint tc = timers_count(loop);
uint tc = timers_count(local_timeloop);
if (!t->expires)
{
t->index = ++tc;
t->expires = when;
BUFFER_PUSH(loop->timers) = t;
HEAP_INSERT(loop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP);
BUFFER_PUSH(local_timeloop->timers) = t;
HEAP_INSERT(local_timeloop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP);
}
else if (t->expires < when)
{
t->expires = when;
HEAP_INCREASE(loop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
HEAP_INCREASE(local_timeloop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
}
else if (t->expires > when)
{
t->expires = when;
HEAP_DECREASE(loop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
HEAP_DECREASE(local_timeloop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
}
#ifdef CONFIG_BFD
/* Hack to notify BFD loops */
if ((loop != &main_timeloop) && (t->index == 1))
if ((local_timeloop != &main_timeloop) && (t->index == 1))
wakeup_kick_current();
#endif
}
@@ -168,11 +152,10 @@ tm_stop(timer *t)
if (!t->expires)
return;
struct timeloop *loop = timeloop_current();
uint tc = timers_count(loop);
uint tc = timers_count(local_timeloop);
HEAP_DELETE(loop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
BUFFER_POP(loop->timers);
HEAP_DELETE(local_timeloop->timers.data, tc, timer *, TIMER_LESS, TIMER_SWAP, t->index);
BUFFER_POP(local_timeloop->timers);
t->index = -1;
t->expires = 0;
@@ -230,7 +213,7 @@ void
timer_init(void)
{
timers_init(&main_timeloop, &root_pool);
timeloop_init_current();
local_timeloop = &main_timeloop;
}