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pthread.cpp
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pthread.cpp
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/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright © 2016-2024 Byteduck */
#include "pthread.h"
#include <sys/thread.h>
#include <cerrno>
#include <cstdio>
static_assert(sizeof(tid_t) == sizeof(pthread_t));
// pthread management
int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void* (*entry)(void*), void* arg) {
auto tid = thread_create(entry, arg);
if (tid < 0)
return tid;
if (thread)
*thread = tid;
return 0;
}
void pthread_exit(void* retval) {
thread_exit(retval);
}
int pthread_kill(pthread_t thread, int sig) {
// TODO
return -1;
}
int pthread_join(pthread_t thread, void** retval) {
return thread_join(thread, retval);
}
int pthread_detach(pthread_t thread) {
// TODO
return -1;
}
// attr
int pthread_attr_init(pthread_attr_t* attr) {
return 0;
}
int pthread_attr_destroy(pthread_attr_t* attr) {
return 0;
}
int pthread_attr_getdetachstate(pthread_attr_t const*, int*) { return 0; }
int pthread_attr_setdetachstate(pthread_attr_t*, int) { return 0; }
int pthread_attr_getguardsize(pthread_attr_t const*, size_t*) { return 0; }
int pthread_attr_setguardsize(pthread_attr_t*, size_t) { return 0;}
int pthread_attr_getschedparam(pthread_attr_t const*, struct sched_param*) { return 0; }
int pthread_attr_setschedparam(pthread_attr_t*, const struct sched_param*) { return 0; }
int pthread_attr_getstack(pthread_attr_t const*, void**, size_t*) { return 0; }
int pthread_attr_setstack(pthread_attr_t* attr, void*, size_t) { return 0; }
int pthread_attr_getstacksize(pthread_attr_t const*, size_t*) { return 0; }
int pthread_attr_setstacksize(pthread_attr_t*, size_t) { return 0; }
// mutex
int pthread_mutex_init(pthread_mutex_t* mutex, const pthread_mutexattr_t* attr) {
mutex->val = 0;
mutex->holder = 0;
mutex->type = attr ? attr->type : PTHREAD_MUTEX_DEFAULT;
if (mutex->type != PTHREAD_MUTEX_NORMAL && mutex->type != PTHREAD_MUTEX_RECURSIVE)
return EINVAL;
return 0;
}
int pthread_mutex_destroy(pthread_mutex_t* mutex) {
return 0;
}
int pthread_mutex_lock(pthread_mutex_t* mutex) {
return 0;
}
int pthread_mutex_trylock(pthread_mutex_t* mutex) {
return 0;
}
int pthread_mutex_unlock(pthread_mutex_t* mutex) {
return 0;
}
int pthread_mutexattr_init(pthread_mutexattr_t* attr) {
attr->type = PTHREAD_MUTEX_DEFAULT;
return 0;
}
int pthread_mutexattr_settype(pthread_mutexattr_t* attr, int type) {
if (type != PTHREAD_MUTEX_NORMAL && type != PTHREAD_MUTEX_RECURSIVE)
return EINVAL;
attr->type = type;
return 0;
}
int pthread_mutexattr_gettype(pthread_mutexattr_t* attr, int* type) {
*type = attr->type;
return 0;
}
int pthread_mutexattr_destroy(pthread_mutexattr_t* attr) {
return 0;
}
// spinlock
int pthread_spin_init(pthread_spinlock_t* lock, int val) {
// TODO
return -1;
}
int pthread_spin_destroy(pthread_spinlock_t* lock) {
// TODO
return -1;
}
int pthread_spin_lock(pthread_spinlock_t* lock) {
// TODO
return -1;
}
int pthread_spin_trylock(pthread_spinlock_t* lock) {
// TODO
return -1;
}
int pthread_spin_unlock(pthread_spinlock_t* lock) {
// TODO
return -1;
}
// misc
int pthread_equal(pthread_t a, pthread_t b) {
return a == b;
}
pthread_t pthread_self() {
return gettid();
}
int pthread_setname_np(pthread_t, const char* name) { return -1; }
int pthread_getname_np(pthread_t, char* name, size_t size) { return -1; }
int pthread_sigmask(int how, const sigset_t *set, sigset_t *oldset) { return -1; }
// key
int pthread_key_create(pthread_key_t* key, void (*destructor)(void*)) { return -1; }
int pthread_key_delete(pthread_key_t key) { return -1; }
// cond
int pthread_cond_broadcast(pthread_cond_t*) {
return -1;
}
int pthread_cond_init(pthread_cond_t* cond, pthread_condattr_t const* attr) {
cond->val = 0;
cond->clock = attr ? attr->clockid : CLOCK_REALTIME_COARSE;
cond->mutex = nullptr;
return 0;
}
int pthread_cond_destroy(pthread_cond_t*) {
return 0;
}
int pthread_cond_signal(pthread_cond_t* cond) {
return -1;
}
int pthread_cond_wait(pthread_cond_t*, pthread_mutex_t*) { return -1; }
int pthread_condattr_init(pthread_condattr_t* attr) {
attr->clockid = CLOCK_MONOTONIC_COARSE;
return 0;
}
int pthread_condattr_getclock(pthread_condattr_t* attr, clockid_t* clock) {
*clock = attr->clockid;
return 0;
}
int pthread_condattr_setclock(pthread_condattr_t* attr, clockid_t clock) {
switch(clock) {
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_REALTIME_COARSE:
case CLOCK_MONOTONIC_COARSE:
case CLOCK_MONOTONIC_RAW:
attr->clockid = clock;
return 0;
default:
return EINVAL;
}
}
int pthread_condattr_destroy(pthread_condattr_t*) {
return 0;
}
int pthread_cond_timedwait(pthread_cond_t*, pthread_mutex_t*, const struct timespec*) { return -1; }
// cancel
int pthread_cancel(pthread_t) { return -1; }
int pthread_setcancelstate(int state, int* oldstate) { return -1; }
int pthread_setcanceltype(int type, int* oldtype) { return -1; }
void pthread_testcancel(void) { }
// sched
int pthread_getschedparam(pthread_t thread, int* policy, struct sched_param* param) { return -1; }
int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param* param) { return -1; }
// specific
void* pthread_getspecific(pthread_key_t key) { return nullptr; }
int pthread_setspecific(pthread_key_t key, void const* value) { return -1; }