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cosmopolitan/libc/thread/pthread_decimate_np.c

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Add pthread tls api
2022-06-22 13:37:45 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
Implement thread cancellation for aarch64
2023-09-07 15:29:16 +00:00
#include "libc/atomic.h"
Make more threading improvements - ASAN memory morgue is now lockless - Make C11 atomics header more portable - Rewrote pthread keys support to be lockless - Simplify Python's unicode table unpacking code - Make crash report write(2) closer to being atomic - Make it possible to strace/ftrace a single thread - ASAN now checks nul-terminated strings fast and properly - Windows fork() now restores TLS memory of calling thread
2022-11-02 05:36:03 +00:00
#include "libc/intrin/atomic.h"
Clean up more code The *NSYNC linked list API is good enough that it deserves to be part of the C libray, so this change writes an improved version of it which uses that offsetof() trick from the Linux Kernel. We vendor all of the *NSYNC tests in third_party which helped confirm the needed refactoring is safe This change also deletes more old code that didn't pan out. My goal here is to work towards a vision where the Cosmopolitan core libraries become less experimental and more focused on curation. This better reflects the current level of quality we've managed to achieve.
2023-07-06 13:57:28 +00:00
#include "libc/intrin/dll.h"
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
#include "libc/runtime/runtime.h"
Rewrite recursive mutex code
2022-09-10 16:14:40 +00:00
#include "libc/thread/posixthread.internal.h"
Use *NSYNC for POSIX threads locking APIs Condition variables, barriers, and r/w locks now work very well.
2022-09-11 18:02:07 +00:00
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
Add pthread tls api
2022-06-22 13:37:45 +00:00
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
/**
* Releases memory of detached threads that have terminated.
*/
void pthread_decimate_np(void) {
Clean up more code The *NSYNC linked list API is good enough that it deserves to be part of the C libray, so this change writes an improved version of it which uses that offsetof() trick from the Linux Kernel. We vendor all of the *NSYNC tests in third_party which helped confirm the needed refactoring is safe This change also deletes more old code that didn't pan out. My goal here is to work towards a vision where the Cosmopolitan core libraries become less experimental and more focused on curation. This better reflects the current level of quality we've managed to achieve.
2023-07-06 13:57:28 +00:00
struct Dll *e;
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
struct PosixThread *pt;
enum PosixThreadStatus status;
StartOver:
pthread_spin_lock(&_pthread_lock);
Clean up more code The *NSYNC linked list API is good enough that it deserves to be part of the C libray, so this change writes an improved version of it which uses that offsetof() trick from the Linux Kernel. We vendor all of the *NSYNC tests in third_party which helped confirm the needed refactoring is safe This change also deletes more old code that didn't pan out. My goal here is to work towards a vision where the Cosmopolitan core libraries become less experimental and more focused on curation. This better reflects the current level of quality we've managed to achieve.
2023-07-06 13:57:28 +00:00
for (e = dll_first(_pthread_list); e; e = dll_next(_pthread_list, e)) {
pt = POSIXTHREAD_CONTAINER(e);
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
if (pt->tib == __get_tls()) continue;
status = atomic_load_explicit(&pt->status, memory_order_acquire);
if (status != kPosixThreadZombie) break;
if (!atomic_load_explicit(&pt->tib->tib_tid, memory_order_acquire)) {
Clean up more code The *NSYNC linked list API is good enough that it deserves to be part of the C libray, so this change writes an improved version of it which uses that offsetof() trick from the Linux Kernel. We vendor all of the *NSYNC tests in third_party which helped confirm the needed refactoring is safe This change also deletes more old code that didn't pan out. My goal here is to work towards a vision where the Cosmopolitan core libraries become less experimental and more focused on curation. This better reflects the current level of quality we've managed to achieve.
2023-07-06 13:57:28 +00:00
dll_remove(&_pthread_list, e);
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
pthread_spin_unlock(&_pthread_lock);
_pthread_free(pt);
goto StartOver;
Add pthread tls api
2022-06-22 13:37:45 +00:00
}
}
Make detached threads work better This change adds a double linked list of threads, so that pthread_exit() will know when it should call exit() from an orphaned child. This change also improves ftrace and strace logging.
2022-11-09 11:58:57 +00:00
pthread_spin_unlock(&_pthread_lock);
Add pthread tls api
2022-06-22 13:37:45 +00:00
}
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