[fusl] clang-format fusl

fusl/src/thread/pthread_create.c

Index: fusl/src/thread/pthread_create.c
diff --git a/fusl/src/thread/pthread_create.c b/fusl/src/thread/pthread_create.c
index e7df34a949d40758619325f8fc87b53484b1d2ec..2b1b5fd13d3d84c8b033728e67cbebc6addad260 100644
--- a/fusl/src/thread/pthread_create.c
+++ b/fusl/src/thread/pthread_create.c
@@ -6,298 +6,303 @@
 #include <string.h>
 #include <stddef.h>
 
-void *__mmap(void *, size_t, int, int, int, off_t);
-int __munmap(void *, size_t);
-int __mprotect(void *, size_t, int);
+void* __mmap(void*, size_t, int, int, int, off_t);
+int __munmap(void*, size_t);
+int __mprotect(void*, size_t, int);
 
-static void dummy_0()
-{
-}
+static void dummy_0() {}
 weak_alias(dummy_0, __acquire_ptc);
 weak_alias(dummy_0, __release_ptc);
 weak_alias(dummy_0, __pthread_tsd_run_dtors);
 weak_alias(dummy_0, __do_orphaned_stdio_locks);
 weak_alias(dummy_0, __dl_thread_cleanup);
 
-_Noreturn void __pthread_exit(void *result)
-{
-	pthread_t self = __pthread_self();
-	sigset_t set;
-
-	self->canceldisable = 1;
-	self->cancelasync = 0;
-	self->result = result;
-
-	while (self->cancelbuf) {
-		void (*f)(void *) = self->cancelbuf->__f;
-		void *x = self->cancelbuf->__x;
-		self->cancelbuf = self->cancelbuf->__next;
-		f(x);
-	}
-
-	__pthread_tsd_run_dtors();
-
-	__lock(self->exitlock);
-
-	/* Mark this thread dead before decrementing count */
-	__lock(self->killlock);
-	self->dead = 1;
-
-	/* Block all signals before decrementing the live thread count.
-	 * This is important to ensure that dynamically allocated TLS
-	 * is not under-allocated/over-committed, and possibly for other
-	 * reasons as well. */
-	__block_all_sigs(&set);
-
-	/* Wait to unlock the kill lock, which governs functions like
-	 * pthread_kill which target a thread id, until signals have
-	 * been blocked. This precludes observation of the thread id
-	 * as a live thread (with application code running in it) after
-	 * the thread was reported dead by ESRCH being returned. */
-	__unlock(self->killlock);
-
-	/* It's impossible to determine whether this is "the last thread"
-	 * until performing the atomic decrement, since multiple threads
-	 * could exit at the same time. For the last thread, revert the
-	 * decrement and unblock signals to give the atexit handlers and
-	 * stdio cleanup code a consistent state. */
-	if (a_fetch_add(&libc.threads_minus_1, -1)==0) {
-		libc.threads_minus_1 = 0;
-		__restore_sigs(&set);
-		exit(0);
-	}
-
-	/* Process robust list in userspace to handle non-pshared mutexes
-	 * and the detached thread case where the robust list head will
-	 * be invalid when the kernel would process it. */
-	__vm_lock();
-	volatile void *volatile *rp;
-	while ((rp=self->robust_list.head) && rp != &self->robust_list.head) {
-		pthread_mutex_t *m = (void *)((char *)rp
-			- offsetof(pthread_mutex_t, _m_next));
-		int waiters = m->_m_waiters;
-		int priv = (m->_m_type & 128) ^ 128;
-		self->robust_list.pending = rp;
-		self->robust_list.head = *rp;
-		int cont = a_swap(&m->_m_lock, self->tid|0x40000000);
-		self->robust_list.pending = 0;
-		if (cont < 0 || waiters)
-			__wake(&m->_m_lock, 1, priv);
-	}
-	__vm_unlock();
-
-	__do_orphaned_stdio_locks();
-	__dl_thread_cleanup();
-
-	if (self->detached && self->map_base) {
-		/* Detached threads must avoid the kernel clear_child_tid
-		 * feature, since the virtual address will have been
-		 * unmapped and possibly already reused by a new mapping
-		 * at the time the kernel would perform the write. In
-		 * the case of threads that started out detached, the
-		 * initial clone flags are correct, but if the thread was
-		 * detached later (== 2), we need to clear it here. */
-		if (self->detached == 2) __syscall(SYS_set_tid_address, 0);
-
-		/* Robust list will no longer be valid, and was already
-		 * processed above, so unregister it with the kernel. */
-		if (self->robust_list.off)
-			__syscall(SYS_set_robust_list, 0, 3*sizeof(long));
-
-		/* Since __unmapself bypasses the normal munmap code path,
-		 * explicitly wait for vmlock holders first. */
-		__vm_wait();
-
-		/* The following call unmaps the thread's stack mapping
-		 * and then exits without touching the stack. */
-		__unmapself(self->map_base, self->map_size);
-	}
-
-	for (;;) __syscall(SYS_exit, 0);
+_Noreturn void __pthread_exit(void* result) {
+  pthread_t self = __pthread_self();
+  sigset_t set;
+
+  self->canceldisable = 1;
+  self->cancelasync = 0;
+  self->result = result;
+
+  while (self->cancelbuf) {
+    void (*f)(void*) = self->cancelbuf->__f;
+    void* x = self->cancelbuf->__x;
+    self->cancelbuf = self->cancelbuf->__next;
+    f(x);
+  }
+
+  __pthread_tsd_run_dtors();
+
+  __lock(self->exitlock);
+
+  /* Mark this thread dead before decrementing count */
+  __lock(self->killlock);
+  self->dead = 1;
+
+  /* Block all signals before decrementing the live thread count.
+   * This is important to ensure that dynamically allocated TLS
+   * is not under-allocated/over-committed, and possibly for other
+   * reasons as well. */
+  __block_all_sigs(&set);
+
+  /* Wait to unlock the kill lock, which governs functions like
+   * pthread_kill which target a thread id, until signals have
+   * been blocked. This precludes observation of the thread id
+   * as a live thread (with application code running in it) after
+   * the thread was reported dead by ESRCH being returned. */
+  __unlock(self->killlock);
+
+  /* It's impossible to determine whether this is "the last thread"
+   * until performing the atomic decrement, since multiple threads
+   * could exit at the same time. For the last thread, revert the
+   * decrement and unblock signals to give the atexit handlers and
+   * stdio cleanup code a consistent state. */
+  if (a_fetch_add(&libc.threads_minus_1, -1) == 0) {
+    libc.threads_minus_1 = 0;
+    __restore_sigs(&set);
+    exit(0);
+  }
+
+  /* Process robust list in userspace to handle non-pshared mutexes
+   * and the detached thread case where the robust list head will
+   * be invalid when the kernel would process it. */
+  __vm_lock();
+  volatile void* volatile* rp;
+  while ((rp = self->robust_list.head) && rp != &self->robust_list.head) {
+    pthread_mutex_t* m =
+        (void*)((char*)rp - offsetof(pthread_mutex_t, _m_next));
+    int waiters = m->_m_waiters;
+    int priv = (m->_m_type & 128) ^ 128;
+    self->robust_list.pending = rp;
+    self->robust_list.head = *rp;
+    int cont = a_swap(&m->_m_lock, self->tid | 0x40000000);
+    self->robust_list.pending = 0;
+    if (cont < 0 || waiters)
+      __wake(&m->_m_lock, 1, priv);
+  }
+  __vm_unlock();
+
+  __do_orphaned_stdio_locks();
+  __dl_thread_cleanup();
+
+  if (self->detached && self->map_base) {
+    /* Detached threads must avoid the kernel clear_child_tid
+     * feature, since the virtual address will have been
+     * unmapped and possibly already reused by a new mapping
+     * at the time the kernel would perform the write. In
+     * the case of threads that started out detached, the
+     * initial clone flags are correct, but if the thread was
+     * detached later (== 2), we need to clear it here. */
+    if (self->detached == 2)
+      __syscall(SYS_set_tid_address, 0);
+
+    /* Robust list will no longer be valid, and was already
+     * processed above, so unregister it with the kernel. */
+    if (self->robust_list.off)
+      __syscall(SYS_set_robust_list, 0, 3 * sizeof(long));
+
+    /* Since __unmapself bypasses the normal munmap code path,
+     * explicitly wait for vmlock holders first. */
+    __vm_wait();
+
+    /* The following call unmaps the thread's stack mapping
+     * and then exits without touching the stack. */
+    __unmapself(self->map_base, self->map_size);
+  }
+
+  for (;;)
+    __syscall(SYS_exit, 0);
 }
 
-void __do_cleanup_push(struct __ptcb *cb)
-{
-	struct pthread *self = __pthread_self();
-	cb->__next = self->cancelbuf;
-	self->cancelbuf = cb;
+void __do_cleanup_push(struct __ptcb* cb) {
+  struct pthread* self = __pthread_self();
+  cb->__next = self->cancelbuf;
+  self->cancelbuf = cb;
 }
 
-void __do_cleanup_pop(struct __ptcb *cb)
-{
-	__pthread_self()->cancelbuf = cb->__next;
+void __do_cleanup_pop(struct __ptcb* cb) {
+  __pthread_self()->cancelbuf = cb->__next;
 }
 
-static int start(void *p)
-{
-	pthread_t self = p;
-	if (self->startlock[0]) {
-		__wait(self->startlock, 0, 1, 1);
-		if (self->startlock[0]) {
-			self->detached = 2;
-			pthread_exit(0);
-		}
-		__restore_sigs(self->sigmask);
-	}
-	if (self->unblock_cancel)
-		__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK,
-			SIGPT_SET, 0, _NSIG/8);
-	__pthread_exit(self->start(self->start_arg));
-	return 0;
+static int start(void* p) {
+  pthread_t self = p;
+  if (self->startlock[0]) {
+    __wait(self->startlock, 0, 1, 1);
+    if (self->startlock[0]) {
+      self->detached = 2;
+      pthread_exit(0);
+    }
+    __restore_sigs(self->sigmask);
+  }
+  if (self->unblock_cancel)
+    __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, _NSIG / 8);
+  __pthread_exit(self->start(self->start_arg));
+  return 0;
 }
 
-static int start_c11(void *p)
-{
-	pthread_t self = p;
-	int (*start)(void*) = (int(*)(void*)) self->start;
-	__pthread_exit((void *)(uintptr_t)start(self->start_arg));
-	return 0;
+static int start_c11(void* p) {
+  pthread_t self = p;
+  int (*start)(void*) = (int (*)(void*))self->start;
+  __pthread_exit((void*)(uintptr_t)start(self->start_arg));
+  return 0;
 }
 
-#define ROUND(x) (((x)+PAGE_SIZE-1)&-PAGE_SIZE)
+#define ROUND(x) (((x) + PAGE_SIZE - 1) & -PAGE_SIZE)
 
 /* pthread_key_create.c overrides this */
 static volatile size_t dummy = 0;
 weak_alias(dummy, __pthread_tsd_size);
-static void *dummy_tsd[1] = { 0 };
+static void* dummy_tsd[1] = {0};
 weak_alias(dummy_tsd, __pthread_tsd_main);
 
 volatile int __block_new_threads = 0;
 
-static FILE *volatile dummy_file = 0;
+static FILE* volatile dummy_file = 0;
 weak_alias(dummy_file, __stdin_used);
 weak_alias(dummy_file, __stdout_used);
 weak_alias(dummy_file, __stderr_used);
 
-static void init_file_lock(FILE *f)
-{
-	if (f && f->lock<0) f->lock = 0;
+static void init_file_lock(FILE* f) {
+  if (f && f->lock < 0)
+    f->lock = 0;
 }
 
-void *__copy_tls(unsigned char *);
-
-int __pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attrp, void *(*entry)(void *), void *restrict arg)
-{
-	int ret, c11 = (attrp == __ATTRP_C11_THREAD);
-	size_t size, guard;
-	struct pthread *self, *new;
-	unsigned char *map = 0, *stack = 0, *tsd = 0, *stack_limit;
-	unsigned flags = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND
-		| CLONE_THREAD | CLONE_SYSVSEM | CLONE_SETTLS
-		| CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | CLONE_DETACHED;
-	int do_sched = 0;
-	pthread_attr_t attr = {0};
-
-	if (!libc.can_do_threads) return ENOSYS;
-	self = __pthread_self();
-	if (!libc.threaded) {
-		for (FILE *f=*__ofl_lock(); f; f=f->next)
-			init_file_lock(f);
-		__ofl_unlock();
-		init_file_lock(__stdin_used);
-		init_file_lock(__stdout_used);
-		init_file_lock(__stderr_used);
-		__syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, _NSIG/8);
-		self->tsd = (void **)__pthread_tsd_main;
-		libc.threaded = 1;
-	}
-	if (attrp && !c11) attr = *attrp;
-
-	__acquire_ptc();
-	if (__block_new_threads) __wait(&__block_new_threads, 0, 1, 1);
-
-	if (attr._a_stackaddr) {
-		size_t need = libc.tls_size + __pthread_tsd_size;
-		size = attr._a_stacksize + DEFAULT_STACK_SIZE;
-		stack = (void *)(attr._a_stackaddr & -16);
-		stack_limit = (void *)(attr._a_stackaddr - size);
-		/* Use application-provided stack for TLS only when
-		 * it does not take more than ~12% or 2k of the
-		 * application's stack space. */
-		if (need < size/8 && need < 2048) {
-			tsd = stack - __pthread_tsd_size;
-			stack = tsd - libc.tls_size;
-			memset(stack, 0, need);
-		} else {
-			size = ROUND(need);
-			guard = 0;
-		}
-	} else {
-		guard = ROUND(DEFAULT_GUARD_SIZE + attr._a_guardsize);
-		size = guard + ROUND(DEFAULT_STACK_SIZE + attr._a_stacksize
-			+ libc.tls_size +  __pthread_tsd_size);
-	}
-
-	if (!tsd) {
-		if (guard) {
-			map = __mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANON, -1, 0);
-			if (map == MAP_FAILED) goto fail;
-			if (__mprotect(map+guard, size-guard, PROT_READ|PROT_WRITE)
-			    && errno != ENOSYS) {
-				__munmap(map, size);
-				goto fail;
-			}
-		} else {
-			map = __mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
-			if (map == MAP_FAILED) goto fail;
-		}
-		tsd = map + size - __pthread_tsd_size;
-		if (!stack) {
-			stack = tsd - libc.tls_size;
-			stack_limit = map + guard;
-		}
-	}
-
-	new = __copy_tls(tsd - libc.tls_size);
-	new->map_base = map;
-	new->map_size = size;
-	new->stack = stack;
-	new->stack_size = stack - stack_limit;
-	new->start = entry;
-	new->start_arg = arg;
-	new->self = new;
-	new->tsd = (void *)tsd;
-	new->locale = &libc.global_locale;
-	if (attr._a_detach) {
-		new->detached = 1;
-		flags -= CLONE_CHILD_CLEARTID;
-	}
-	if (attr._a_sched) {
-		do_sched = new->startlock[0] = 1;
-		__block_app_sigs(new->sigmask);
-	}
-	new->robust_list.head = &new->robust_list.head;
-	new->unblock_cancel = self->cancel;
-	new->CANARY = self->CANARY;
-
-	a_inc(&libc.threads_minus_1);
-	ret = __clone((c11 ? start_c11 : start), stack, flags, new, &new->tid, TP_ADJ(new), &new->tid);
-
-	__release_ptc();
-
-	if (do_sched) {
-		__restore_sigs(new->sigmask);
-	}
-
-	if (ret < 0) {
-		a_dec(&libc.threads_minus_1);
-		if (map) __munmap(map, size);
-		return EAGAIN;
-	}
-
-	if (do_sched) {
-		ret = __syscall(SYS_sched_setscheduler, new->tid,
-			attr._a_policy, &attr._a_prio);
-		a_store(new->startlock, ret<0 ? 2 : 0);
-		__wake(new->startlock, 1, 1);
-		if (ret < 0) return -ret;
-	}
-
-	*res = new;
-	return 0;
+void* __copy_tls(unsigned char*);
+
+int __pthread_create(pthread_t* restrict res,
+                     const pthread_attr_t* restrict attrp,
+                     void* (*entry)(void*),
+                     void* restrict arg) {
+  int ret, c11 = (attrp == __ATTRP_C11_THREAD);
+  size_t size, guard;
+  struct pthread *self, *new;
+  unsigned char *map = 0, *stack = 0, *tsd = 0, *stack_limit;
+  unsigned flags = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
+                   CLONE_THREAD | CLONE_SYSVSEM | CLONE_SETTLS |
+                   CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | CLONE_DETACHED;
+  int do_sched = 0;
+  pthread_attr_t attr = {0};
+
+  if (!libc.can_do_threads)
+    return ENOSYS;
+  self = __pthread_self();
+  if (!libc.threaded) {
+    for (FILE* f = *__ofl_lock(); f; f = f->next)
+      init_file_lock(f);
+    __ofl_unlock();
+    init_file_lock(__stdin_used);
+    init_file_lock(__stdout_used);
+    init_file_lock(__stderr_used);
+    __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, SIGPT_SET, 0, _NSIG / 8);
+    self->tsd = (void**)__pthread_tsd_main;
+    libc.threaded = 1;
+  }
+  if (attrp && !c11)
+    attr = *attrp;
+
+  __acquire_ptc();
+  if (__block_new_threads)
+    __wait(&__block_new_threads, 0, 1, 1);
+
+  if (attr._a_stackaddr) {
+    size_t need = libc.tls_size + __pthread_tsd_size;
+    size = attr._a_stacksize + DEFAULT_STACK_SIZE;
+    stack = (void*)(attr._a_stackaddr & -16);
+    stack_limit = (void*)(attr._a_stackaddr - size);
+    /* Use application-provided stack for TLS only when
+     * it does not take more than ~12% or 2k of the
+     * application's stack space. */
+    if (need < size / 8 && need < 2048) {
+      tsd = stack - __pthread_tsd_size;
+      stack = tsd - libc.tls_size;
+      memset(stack, 0, need);
+    } else {
+      size = ROUND(need);
+      guard = 0;
+    }
+  } else {
+    guard = ROUND(DEFAULT_GUARD_SIZE + attr._a_guardsize);
+    size = guard + ROUND(DEFAULT_STACK_SIZE + attr._a_stacksize +
+                         libc.tls_size + __pthread_tsd_size);
+  }
+
+  if (!tsd) {
+    if (guard) {
+      map = __mmap(0, size, PROT_NONE, MAP_PRIVATE | MAP_ANON, -1, 0);
+      if (map == MAP_FAILED)
+        goto fail;
+      if (__mprotect(map + guard, size - guard, PROT_READ | PROT_WRITE) &&
+          errno != ENOSYS) {
+        __munmap(map, size);
+        goto fail;
+      }
+    } else {
+      map = __mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1,
+                   0);
+      if (map == MAP_FAILED)
+        goto fail;
+    }
+    tsd = map + size - __pthread_tsd_size;
+    if (!stack) {
+      stack = tsd - libc.tls_size;
+      stack_limit = map + guard;
+    }
+  }
+
+  new = __copy_tls(tsd - libc.tls_size);
+  new->map_base = map;
+  new->map_size = size;
+  new->stack = stack;
+  new->stack_size = stack - stack_limit;
+  new->start = entry;
+  new->start_arg = arg;
+  new->self = new;
+  new->tsd = (void*)tsd;
+  new->locale = &libc.global_locale;
+  if (attr._a_detach) {
+    new->detached = 1;
+    flags -= CLONE_CHILD_CLEARTID;
+  }
+  if (attr._a_sched) {
+    do_sched = new->startlock[0] = 1;
+    __block_app_sigs(new->sigmask);
+  }
+  new->robust_list.head = &new->robust_list.head;
+  new->unblock_cancel = self->cancel;
+  new->CANARY = self->CANARY;
+
+  a_inc(&libc.threads_minus_1);
+  ret = __clone((c11 ? start_c11 : start), stack, flags, new, &new->tid,
+                TP_ADJ(new), &new->tid);
+
+  __release_ptc();
+
+  if (do_sched) {
+    __restore_sigs(new->sigmask);
+  }
+
+  if (ret < 0) {
+    a_dec(&libc.threads_minus_1);
+    if (map)
+      __munmap(map, size);
+    return EAGAIN;
+  }
+
+  if (do_sched) {
+    ret = __syscall(SYS_sched_setscheduler, new->tid, attr._a_policy,
+                    &attr._a_prio);
+    a_store(new->startlock, ret < 0 ? 2 : 0);
+    __wake(new->startlock, 1, 1);
+    if (ret < 0)
+      return -ret;
+  }
+
+  *res = new;
+  return 0;
 fail:
-	__release_ptc();
-	return EAGAIN;
+  __release_ptc();
+  return EAGAIN;
 }
 
 weak_alias(__pthread_exit, pthread_exit);