Remove __threaded variable

libc/calls/calls.h

@@ -129,6 +129,7 @@ int linkat(int, const char *, int, const char *, int) libcesque __read_only(2) _
 int mincore(void *, size_t, unsigned char *) libcesque __read_only(1) __write_only(3);
 int mkdir(const char *, unsigned) libcesque __read_only(1);
 int mkdirat(int, const char *, unsigned) libcesque __read_only(2);
+int mkfifo(const char *, unsigned);
 int mknod(const char *, unsigned, uint64_t) libcesque __read_only(1);
 int nice(int) libcesque;
 int open(const char *, int, ...) libcesque __read_only(1);

libc/calls/pledge.c

@@ -169,8 +169,7 @@
  *   turn APE binaries into static native binaries.
  *
  * - "prot_exec" allows mmap(PROT_EXEC) and mprotect(PROT_EXEC). This is
- *   needed to (1) code morph mutexes in __enable_threads(), and it's
- *   needed to (2) launch non-static or non-native executables, e.g.
+ *   needed to launch non-static or non-native executables, e.g.
  *   non-assimilated APE binaries, or dynamic-linked executables.
  *
  * - "unveil" allows unveil() to be called, as well as the underlying

libc/calls/sched_getscheduler.c

@@ -31,7 +31,6 @@
  *     special; the kernel treats this as a thread id (noting that
  *     `getpid() == gettid()` is always the case on Linux for the main
  *     thread) and will only take effect for the specified tid.
- *     Therefore this function is POSIX-compliant iif `!__threaded`.
  * @return scheduler policy, or -1 w/ errno
  * @error ESRCH if `pid` not found
  * @error EPERM if not permitted

libc/calls/sched_setscheduler.c

@@ -41,7 +41,6 @@
  *     special; the kernel treats this as a thread id (noting that
  *     `getpid() == gettid()` is always the case on Linux for the main
  *     thread) and will only take effect for the specified tid.
- *     Therefore this function is POSIX-compliant iif `!__threaded`.
  *
  * @param policy specifies the kernel's timesharing strategy.
  *

libc/intrin/enable_threads.c

@@ -1,24 +0,0 @@
-/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
-│ vi: set et 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.                                                │
-╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/runtime/runtime.h"
-#include "libc/thread/tls.h"
-
-void __enable_threads(void) {
-  __threaded = 1;
-}

libc/nexgen32e/threaded.c

@@ -18,11 +18,6 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/thread/tls.h"
 
-/**
- * Contains TID of main thread or 0 if threading isn't enabled.
- */
-int __threaded;
-
 #ifdef __x86_64__
 char __tls_enabled;
 #endif

libc/proc/fork-nt.c

@@ -113,7 +113,6 @@ static dontinline textwindows ssize_t ForkIo2(
   ssize_t rc = ForkIo(h, buf, n, fn);
   if (ischild) {
     // prevent crashes
-    __threaded = false;
     __tls_enabled = false;
     __pid = __imp_GetCurrentProcessId();
     __klog_handle = 0;
@@ -268,7 +267,6 @@ textwindows void WinMainForked(void) {
   ReadOrDie(reader, __bss_start, __bss_end - __bss_start);
   kStartTsc = savetsc;
   __tls_enabled = false;
-  __threaded = false;
 
   // fixup memory manager
   __maps.maps = 0;
@@ -464,8 +462,6 @@ textwindows int sys_fork_nt(uint32_t dwCreationFlags) {
     // the child's pending signals is initially empty
     atomic_store_explicit(&__sig.pending, 0, memory_order_relaxed);
     atomic_store_explicit(&tib->tib_sigpending, 0, memory_order_relaxed);
-    // re-enable threads
-    __enable_threads();
     // re-apply code morphing for function tracing
     if (ftrace_stackdigs) {
       _weaken(__hook)(_weaken(ftrace_hook), _weaken(GetSymbolTable)());

libc/proc/proc.c

@@ -236,7 +236,6 @@ static textwindows dontinstrument uint32_t __proc_worker(void *arg) {
  * Lazy initializes process tracker data structures and worker.
  */
 static textwindows void __proc_setup(void) {
-  __enable_threads();
   __proc.onbirth = CreateEvent(0, 0, 0, 0);     // auto reset
   __proc.haszombies = CreateEvent(0, 1, 0, 0);  // manual reset
   __proc.thread = CreateThread(0, 65536, __proc_worker, 0,

libc/runtime/clone.c

@@ -746,10 +746,6 @@ errno_t clone(void *func, void *stk, size_t stksz, int flags, void *arg,
               void *ptid, void *tls, void *ctid) {
   int rc;
 
-  if (flags & CLONE_THREAD) {
-    __enable_threads();
-  }
-
   if (!func) {
     rc = EINVAL;
   } else if (IsLinux()) {

libc/runtime/runtime.h

@@ -113,7 +113,6 @@ void _weakfree(void *) libcesque;
 void *_mapanon(size_t) attributeallocsize((1)) mallocesque libcesque;
 void *_mapshared(size_t) attributeallocsize((1)) mallocesque libcesque;
 void CheckForFileLeaks(void) libcesque;
-void __enable_threads(void) libcesque;
 void __oom_hook(size_t) libcesque;
 /* code morphing */
 void __morph_begin(void) libcesque;

libc/thread/tls.h

@@ -42,7 +42,6 @@ struct CosmoTib {
   _Atomic(void *) tib_keys[46];
 } __attribute__((__aligned__(64)));
 
-extern int __threaded;
 extern char __tls_morphed;
 extern unsigned __tls_index;