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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include "platform_api_vmcore.h"
#include "platform_api_extension.h"
typedef struct {
thread_start_routine_t start;
void *arg;
} thread_wrapper_arg;
static void *
os_thread_wrapper(void *arg)
{
thread_wrapper_arg *targ = arg;
thread_start_routine_t start_func = targ->start;
void *thread_arg = targ->arg;
#if 0
os_printf("THREAD CREATED %jx\n", (uintmax_t)(uintptr_t)pthread_self());
#endif
BH_FREE(targ);
start_func(thread_arg);
return NULL;
}
korp_tid
os_self_thread(void)
{
/* only allowed if this is a thread, xTaskCreate is not enough look at
* product_mini for how to use this*/
return pthread_self();
}
int
os_mutex_init(korp_mutex *mutex)
{
return pthread_mutex_init(mutex, NULL);
}
int
os_recursive_mutex_init(korp_mutex *mutex)
{
int ret;
pthread_mutexattr_t mattr;
assert(mutex);
ret = pthread_mutexattr_init(&mattr);
if (ret)
return BHT_ERROR;
pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE);
ret = pthread_mutex_init(mutex, &mattr);
pthread_mutexattr_destroy(&mattr);
return ret == 0 ? BHT_OK : BHT_ERROR;
}
int
os_mutex_destroy(korp_mutex *mutex)
{
return pthread_mutex_destroy(mutex);
}
int
os_mutex_lock(korp_mutex *mutex)
{
return pthread_mutex_lock(mutex);
}
int
os_mutex_unlock(korp_mutex *mutex)
{
return pthread_mutex_unlock(mutex);
}
int
os_thread_create_with_prio(korp_tid *tid, thread_start_routine_t start,
void *arg, unsigned int stack_size, int prio)
{
pthread_attr_t tattr;
thread_wrapper_arg *targ;
assert(stack_size > 0);
assert(tid);
assert(start);
pthread_attr_init(&tattr);
pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE);
if (pthread_attr_setstacksize(&tattr, stack_size) != 0) {
os_printf("Invalid thread stack size %u. Min stack size = %u",
stack_size, PTHREAD_STACK_MIN);
pthread_attr_destroy(&tattr);
return BHT_ERROR;
}
targ = (thread_wrapper_arg *)BH_MALLOC(sizeof(*targ));
if (!targ) {
pthread_attr_destroy(&tattr);
return BHT_ERROR;
}
targ->start = start;
targ->arg = arg;
if (pthread_create(tid, &tattr, os_thread_wrapper, targ) != 0) {
pthread_attr_destroy(&tattr);
os_free(targ);
return BHT_ERROR;
}
pthread_attr_destroy(&tattr);
return BHT_OK;
}
int
os_thread_create(korp_tid *tid, thread_start_routine_t start, void *arg,
unsigned int stack_size)
{
return os_thread_create_with_prio(tid, start, arg, stack_size,
BH_THREAD_DEFAULT_PRIORITY);
}
int
os_thread_join(korp_tid thread, void **retval)
{
return pthread_join(thread, retval);
}
int
os_thread_detach(korp_tid tid)
{
return pthread_detach(tid);
}
void
os_thread_exit(void *retval)
{
pthread_exit(retval);
}
int
os_cond_init(korp_cond *cond)
{
return pthread_cond_init(cond, NULL);
}
int
os_cond_destroy(korp_cond *cond)
{
return pthread_cond_destroy(cond);
}
int
os_cond_wait(korp_cond *cond, korp_mutex *mutex)
{
return pthread_cond_wait(cond, mutex);
}
static void
msec_nsec_to_abstime(struct timespec *ts, uint64 usec)
{
struct timeval tv;
time_t tv_sec_new;
long int tv_nsec_new;
gettimeofday(&tv, NULL);
tv_sec_new = (time_t)(tv.tv_sec + usec / 1000000);
if (tv_sec_new >= tv.tv_sec) {
ts->tv_sec = tv_sec_new;
}
else {
/* integer overflow */
ts->tv_sec = BH_TIME_T_MAX;
os_printf("Warning: os_cond_reltimedwait exceeds limit, "
"set to max timeout instead\n");
}
tv_nsec_new = (long int)(tv.tv_usec * 1000 + (usec % 1000000) * 1000);
if (tv.tv_usec * 1000 >= tv.tv_usec && tv_nsec_new >= tv.tv_usec * 1000) {
ts->tv_nsec = tv_nsec_new;
}
else {
/* integer overflow */
ts->tv_nsec = LONG_MAX;
os_printf("Warning: os_cond_reltimedwait exceeds limit, "
"set to max timeout instead\n");
}
if (ts->tv_nsec >= 1000000000L && ts->tv_sec < BH_TIME_T_MAX) {
ts->tv_sec++;
ts->tv_nsec -= 1000000000L;
}
}
int
os_cond_reltimedwait(korp_cond *cond, korp_mutex *mutex, uint64 useconds)
{
int ret;
struct timespec abstime;
if (useconds == BHT_WAIT_FOREVER)
ret = pthread_cond_wait(cond, mutex);
else {
msec_nsec_to_abstime(&abstime, useconds);
ret = pthread_cond_timedwait(cond, mutex, &abstime);
}
if (ret != BHT_OK && ret != ETIMEDOUT)
return BHT_ERROR;
return ret;
}
int
os_cond_signal(korp_cond *cond)
{
return pthread_cond_signal(cond);
}
int
os_cond_broadcast(korp_cond *cond)
{
return pthread_cond_broadcast(cond);
}
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