omp_init_lock
Initializes a simple lock.
void omp_init_lock(
omp_lock_t *lock
);
Parameters
- lock
A variable of type omp_lock_t.
Remarks
For more information, see 3.2.1 omp_init_lock and omp_init_nest_lock Functions.
Example
// omp_init_lock.cpp
// compile with: /openmp
#include <stdio.h>
#include <omp.h>
omp_lock_t my_lock;
int main() {
omp_init_lock(&my_lock);
#pragma omp parallel num_threads(4)
{
int tid = omp_get_thread_num( );
int i, j;
for (i = 0; i < 5; ++i) {
omp_set_lock(&my_lock);
printf_s("Thread %d - starting locked region\n", tid);
printf_s("Thread %d - ending locked region\n", tid);
omp_unset_lock(&my_lock);
}
}
omp_destroy_lock(&my_lock);
}
Thread 0 - starting locked region Thread 0 - ending locked region Thread 0 - starting locked region Thread 0 - ending locked region Thread 0 - starting locked region Thread 0 - ending locked region Thread 0 - starting locked region Thread 0 - ending locked region Thread 0 - starting locked region Thread 0 - ending locked region Thread 1 - starting locked region Thread 1 - ending locked region Thread 1 - starting locked region Thread 1 - ending locked region Thread 1 - starting locked region Thread 1 - ending locked region Thread 1 - starting locked region Thread 1 - ending locked region Thread 1 - starting locked region Thread 1 - ending locked region Thread 2 - starting locked region Thread 2 - ending locked region Thread 2 - starting locked region Thread 2 - ending locked region Thread 2 - starting locked region Thread 2 - ending locked region Thread 2 - starting locked region Thread 2 - ending locked region Thread 2 - starting locked region Thread 2 - ending locked region Thread 3 - starting locked region Thread 3 - ending locked region Thread 3 - starting locked region Thread 3 - ending locked region Thread 3 - starting locked region Thread 3 - ending locked region Thread 3 - starting locked region Thread 3 - ending locked region Thread 3 - starting locked region Thread 3 - ending locked region