pthread_spin_init (pthread_spinlock_t *s, int shared) int Initializes a spin lock. pthread_spin_destroy (pthread_spinlock_t *s) int Destroys a spin lock. pthread_spin_lock (pthread_spinlock_t *s) int Locks a spin lock. pthread_spin_trylock (pthread_spinlock_t *s) int Atte...
#include <pthread.h> int pthread_spin_destroy(pthread_spinlock_t *lock); int pthread_spin_init(pthread_spinlock_t *lock, int pshared); 説明 pthread_spin_destroy サブルーチンは、ロックによって参照されるスピン・ロックを破棄し、ロックによって使用されているすべてのリソースを解放...
int pthread_spin_init(pthread_spinlock_t *lock, int pshared); 自旋锁的销毁 int pthread_spin_destroy(pthread_spinlock_t *lock); 上锁 int pthread_spin_lock(pthread_spinlock_t *lock); 判断是否上锁 int pthread_spin_trylock(pthread_spinlock_t *lock); 解锁 int pthread_spin_unlock(pthread_spinloc...
* If there is only one cpu then "interlock" is set equal to * PTW32_SPIN_USE_MUTEX and u.mutex is a initialised mutex. * If the number of cpus is greater than 1 then "interlock" * is set equal to PTW32_SPIN_UNLOCKED and the number is * stored in u.cpus. This arrangement allo...
extern CRITICAL_SECTION ptw32_cond_test_init_lock; extern CRITICAL_SECTION ptw32_rwlock_test_init_lock; extern CRITICAL_SECTION ptw32_spinlock_test_init_lock; #ifdef _UWIN extern int pthread_count; #endif #ifdef __cplusplus extern "C" ...
int pthread_spin_init(pthread_spinlock_t *lock,int pshared)请求OS对*lock初始化,分配资源,flag设为已开锁,将它的线程等待队列置为NULL.pshared有两个可选值 ◼ PTHREAD_PROCESS_SHARED:对*lock执行“加锁”的线程与当前线 程可以分别属于不同的进程。 ◼ PTHREAD_PROCESS_PRIVATE:对*lock执行“加锁”的...
{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0, 0 } // mutex锁本质上是一个spin lock,空转锁,关于空转锁的东西在下面会提到。 /// pthread_src/sysdeps/generic/pt-mutex-init.c int _pthread_mutex_init (pthread...
pthread_spin_init()の構文 int pthread_spin_init(pthread_spinlock_t *lock, intpshared); #include <pthread.h> pthread_spinlock_tlock; intpshared; intret; /* initialize a spin lock */ret= pthread_spin_init(&lock,pshared); pshared属性は、次のいずれかの値を持ちます。
pthread_spin_init 函数的pshared参数表示进程共享属性...,表明自旋锁是如何获取的,如果它设为PTHREAD_PROCESS_SHARED,则自旋锁能被,可以访问锁底层内存的线程所获取,即使那些线程属于不同的进程。...否则pshared参数设为PTHREAD_PROCESS_PRIVATE,自旋锁就只能被初始化该锁的进程内部的线程访问到。...如果自旋锁当前...
intpthread_mutex_init(pthread_mutex_t*mutex,constpthread_mutexattr_t*attr); 参数说明 mutex:互斥锁句柄,不能为NULL attr:指向互斥锁属性的指针,若指针为NULL,则使用默认的属性 返回值 0:初始化成功 EINVAL:参数无效 销毁互斥锁 函数原型 intpthread_mutex_destroy(pthread_mutex_t*mutex); ...