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- Pthread-win32 / pthread_spin_init.c - GitHub.
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- Pthread_spin_unlock.c - sysdeps/s390/nptl/pthread_spin_unlock.c - Glibc.
- File: pthread_h.m4 | Debian Sources.
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- File: pthread-spin.m4 | Debian Sources.
- Pthread_spin_init (3) - Linux Man Pages - SysTutorials.
Pthread_spin_init() - QNX.
Oh no! Some styles failed to load. 😵 Please try reloading this page. The pthread_spin_unlock() function unlocks the spin lock referred to lock. If any threads are spinning on the lock, one of those threads will then acquire the lock. Calling pthread_spin_unlock() on a lock that is not held by the caller results in undefined behavior. RETURN VALUE top On success, these functions return zero. On failure, they return an error number. C pthread-condattr-init C pthread-condattr-setpshared C pthread-create C pthread-detach C pthread-equal C pthread-exit C pthread-getconcurrency C pthread-getschedparam C pthread-getspecific C pthread-join C pthread-key-create C pthread-key-delete C pthread-mutex-destroy C result = pthread_mutex_getprioceiling( &mutex, &prioceiling ); C pthread-mutex-init.
Pthread-win32 / pthread_spin_init.c - GitHub.
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LKML Archive on help / color / mirror / Atom feed * [PATCH v8] oom_kill.c: futex: Don't OOM reap the VMA containing the robust_list_head @ 2022-04-08 3:28 Nico Pache 2022-04-08 8:15 ` Peter Zijlstra 2022-04-08 14:41 ` kernel test robot 0 siblings, 2 replies; 24+ messages in thread From: Nico Pache @ 2022-04-08 3:28 UTC (permalink / raw) To: linux-mm, linux-kernel Cc: Rafael. PTHREAD_PROCESS_PRIVATE is defined in header pthread.h. PTHREAD_PROCESS_PRIVATE can be used in the following way: Copy. pthread_spin_init( &lock, PTHREAD_PROCESS_PRIVATE ); The full source code is listed as follows: Copy.
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Clone / cvs-import of pthread-win32 + local tweaks (including MSVC2008 - MSVC2019 project files) - pthread-win32/pthread_spin_init.c at master · GerHobbelt/pthread-win32. Pthread_ mutex _trylock() — Attempt to lock a mutex object - IBM. If the thread ends abnormally, the processes of the mutex waiters for this mutex lock will be terminated. Example.CELEBP40 /* CELEBP40 */ #define _OPEN_THREADS..
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Poke 2.3%2Bdfsg-1. links: PTS, VCS area: main; in suites: bookworm, sid; size: 73,604 kB; sloc: ansic: 588,390; sh: 7,927; yacc: 5,858; lisp: 4,960; makefile: 4,249. Pthread_mutex_t mutex; 2.初始化互斥量. 静态分配 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZED 动态分配 int pthread_mutex_init ( pthread_mutex_t * restrict mutex, const pthread_mutexattr_t * restrict attr); restrict：C中的一个关键字（只能用在函数形参处来修饰一个指针），和volatile的作用相反。. Once a spin lock has been destroyed, performing any operation on the lock other than once more initializing it with pthread_spin_init() results in undefined behavior. The result of performing operations such as pthread_spin_lock(3) , pthread_spin_unlock(3) , and pthread_spin_destroy () on copies of the object referred to by lock is undefined.
Pthread_spin_unlock.c - sysdeps/s390/nptl/pthread_spin_unlock.c - Glibc.
2 Answers. You can use constructor and destructor (available in gcc and clang) #include <pthread.h> #include <stdlib.h> static pthread_spinlock_t lock; __attribute__ ( (constructor)) void lock_constructor () { if ( pthread_spin_init ( &lock, 0 ) != 0 ) { exit ( 1 ); } } int main () { if ( pthread_spin_lock ( &lock ) != 0 ||.
File: pthread_h.m4 | Debian Sources.
The pthread_spin_init function shall allocate any resources required to use the spin lock referenced by lock and initialize the lock to an unlocked state. Pthreads-w32 supports single and multiple processor systems as well as process CPU affinity masking by checking the mask when the spin lock is initialized.
[PATCH] vhost: Use mutex to protect vq_irq setup.
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The results of calling pthread_spin_init() with an already initialized lock are undefined. The pthread_spin_destroy() function is used to destroy a spin lock previ- ously created with pthread_spin_init(). It is undefined what happens if the function is called when a thread holds the lock, or if the function is called with an uninitialized spin. CMPSC 311, Intro to Posix Threads (includes an extensive example using threads and semaphores) CMPSC 311 textbook, Bryant & O'Hallaron, Computer Systems Sec 1c) API for user thread creation and synchronization In some environments, the eXtremeDB runtime uses a System V shared memory mechanism (for example, Sun Solaris and Linux) while for others it uses POSIX style shared memory The mmap. Once a spin lock has been destroyed, performing any operation on the lock other than once more initializing it with pthread_spin_init() results in undefined behavior. The result of performing operations such as pthread_spin_lock(3) , pthread_spin_unlock(3) , and pthread_spin_destroy(3) on copies of the object referred to by lock is undefined.
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This is currently consistent with most/all commercial Unix POSIX threads implementations. * spin.c (pthread_spin_init): Edit renamed function call. * nonportable.c (pthread_num_processors_np): New. (pthread_getprocessors_np): Renamed to ptw32_getprocessors and moved to private.c. * private.c (pthread_getprocessors): Moved here from nonportable. PTHREAD_PROCESS_PRIVATE. Description: Permits a spin lock to be operated upon only by threads created within the same process as the thread that initialized the spin lock. If threads of differing processes attempt to operate on such a spin lock, the behavior is undefined. The default value of the process-shared attribute is PTHREAD_PROCESS_PRIVATE. The pthread_spin_destroy() function shall destroy the spin lock referenced by lock and release any resources used by the lock. The effect of subsequent use of the lock is undefined until the lock is reinitialized by another call t.
Pthread_spin_trylock(3) - Linux manual page - Gitee.
The pthread_spin_init() function allocates any resources required for the use of the spin lock referred to by lock and initializes the lock to be in the unlocked state. The pshared argument must have one of the following values: PTHREAD_PROCESS_PRIVATE The spin lock is to be operated on only by threads in the same process as the thread that calls pthread_spin_init (). Pthread_spin_destroy.c: 3.1 KiB: 01 Jul 2011 09:33:35 +0000: pthread_spin_init.c: 2.8 KiB: 01 Jan 2005 14:36:17 +0000: pthread_spin_lock.c: 2.3 KiB: 01 Jul 2011 09:33:35 +0000: pthread_spin_trylock.c: 2.3 KiB: 01 Jul 2011 09:33:35 +0000: pthread_spin_unlock.c: 2.2 KiB: 02 Jul 2011 06:35:21 +0000: pthread_testcancel.c: 3.3 KiB: 06 May 2011 02:11. 【摘要】线程的出现让我们的计算机运行效率得到了显著地提升，虽然我们现在还很少接触到多线程的程序，但是在以后的实际工作中，多线程绝对是我们的一大得力助手，它可以显著提升你的工作效率，并且使得你的代码执行质量更有保障。.
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The pthread_spin_init() function allocates any resources required for the use of the spin lock referred to by lock and initializes the lock to be in the unlocked state. The pshared argument must have one of the following values: PTHREAD_PROCESS_PRIVATE The spin lock is to be operated on only by threads in the same process as the thread that calls pthread_spin_init (). The pthread_spin_initfunction shall allocate any resources required to use the spin lock referenced by lockand initialize the lock to an unlocked state. Pthreads-w32supports single and multiple processor systems as well as process CPU affinity masking by checking the mask when the spin lock is initialized. If the process is using only a single.
File: pthread-spin.m4 | Debian Sources.
'NAME' specifies the name of this argument (optional). You can use the name of local variable, local data structure member (e.g. var->field, var.field2), local array with fixed in. C++ (Cpp) pthread_spin_lock - 30 examples found. These are the top rated real world C++ (Cpp) examples of pthread_spin_lock extracted from open source projects. You can rate examples to help us improve the quality of examples.
Pthread_spin_init (3) - Linux Man Pages - SysTutorials.
The pthread_spin_init()function allocates the resources required for the thread spinlock spinner, and initializes spinnerto an unlocked state. Any thread that can access the memory where spinneris allocated can operate on the spinlock. Results are undefined if you call pthread_spin_init()on a.
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