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LibC: Implement pthread_cleanup_{pop,push}

This commit is contained in:
Bananymous 2025-04-15 21:48:38 +03:00
parent 64002626b9
commit 5539d5eed0
1 changed files with 36 additions and 0 deletions
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36
userspace/libraries/LibC/pthread.cpp
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@ -29,6 +29,40 @@ extern "C" void pthread_trampoline_cpp(void* arg)
ASSERT_NOT_REACHED();
}
struct pthread_cleanup_t
{
void (*routine)(void*);
void* arg;
pthread_cleanup_t* next;
};
static thread_local pthread_cleanup_t* s_cleanup_stack = nullptr;
void pthread_cleanup_pop(int execute)
{
ASSERT(s_cleanup_stack);
auto* cleanup = s_cleanup_stack;
s_cleanup_stack = cleanup->next;
if (execute)
cleanup->routine(cleanup->arg);
free(cleanup);
}
void pthread_cleanup_push(void (*routine)(void*), void* arg)
{
auto* cleanup = static_cast<pthread_cleanup_t*>(malloc(sizeof(pthread_cleanup_t)));
ASSERT(cleanup);
cleanup->routine = routine;
cleanup->arg = arg;
cleanup->next = s_cleanup_stack;
s_cleanup_stack = cleanup;
}
int pthread_create(pthread_t* __restrict thread, const pthread_attr_t* __restrict attr, void* (*start_routine)(void*), void* __restrict arg)
{
auto* info = static_cast<pthread_trampoline_info_t*>(malloc(sizeof(pthread_trampoline_info_t)));
@ -51,6 +85,8 @@ int pthread_create(pthread_t* __restrict thread, const pthread_attr_t* __restric
void pthread_exit(void* value_ptr)
{
while (s_cleanup_stack)
pthread_cleanup_pop(1);
syscall(SYS_PTHREAD_EXIT, value_ptr);
ASSERT_NOT_REACHED();
}