test/testthread.c

/* ====================================================================
 * The Apache Software License, Version 1.1
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#include "apr_thread_proc.h"
#include "apr_lock.h"
#include "apr_errno.h"
#include "apr_general.h"
#include "errno.h"
#include <stdio.h>
#ifdef BEOS
#include <unistd.h>
#endif


void * APR_THREAD_FUNC thread_func1(void *data);
void * APR_THREAD_FUNC thread_func2(void *data);
void * APR_THREAD_FUNC thread_func3(void *data);
void * APR_THREAD_FUNC thread_func4(void *data);


apr_lock_t *thread_lock;
apr_pool_t *context;
int x = 0;

void * APR_THREAD_FUNC thread_func1(void *data)
{
    int i;
    for (i = 0; i < 10000; i++) {
        apr_lock(thread_lock);
        x++;
        apr_unlock(thread_lock);
    }
    return NULL;
} 

void * APR_THREAD_FUNC thread_func2(void *data)
{
    int i;
    for (i = 0; i < 10000; i++) {
        apr_lock(thread_lock);
        x++;
        apr_unlock(thread_lock);
    }
    return NULL;
} 

void * APR_THREAD_FUNC thread_func3(void *data)
{
    int i;
    for (i = 0; i < 10000; i++) {
        apr_lock(thread_lock);
        x++;
        apr_unlock(thread_lock);
    }
    return NULL;
} 

void * APR_THREAD_FUNC thread_func4(void *data)
{
    int i;
    for (i = 0; i < 10000; i++) {
        apr_lock(thread_lock);
        x++;
        apr_unlock(thread_lock);
    }
    return NULL;
} 

int main()
{
    apr_thread_t *t1;
    apr_thread_t *t2;
    apr_thread_t *t3;
    apr_thread_t *t4;
    apr_status_t s1;
    apr_status_t s2;
    apr_status_t s3;
    apr_status_t s4;

    apr_initialize();

    fprintf(stdout, "Initializing the context......."); 
    if (apr_create_pool(&context, NULL) != APR_SUCCESS) {
        fprintf(stderr, "could not initialize\n");
        exit(-1);
    }
    fprintf(stdout, "OK\n");

    fprintf(stdout, "Initializing the lock......."); 
    s1 = apr_create_lock(&thread_lock, APR_MUTEX, APR_INTRAPROCESS, "lock.file", context); 
    if (s1 != APR_SUCCESS) {
        fprintf(stderr, "Could not create lock\n");
        exit(-1);
    }
    fprintf(stdout, "OK\n");

    fprintf(stdout, "Starting all the threads......."); 
    s1 = apr_create_thread(&t1, NULL, thread_func1, NULL, context);
    s2 = apr_create_thread(&t2, NULL, thread_func2, NULL, context);
    s3 = apr_create_thread(&t3, NULL, thread_func3, NULL, context);
    s4 = apr_create_thread(&t4, NULL, thread_func4, NULL, context);
    if (s1 != APR_SUCCESS || s2 != APR_SUCCESS || 
        s3 != APR_SUCCESS || s4 != APR_SUCCESS) {
        fprintf(stderr, "Error starting thread\n");
        exit(-1);
    }
    fprintf(stdout, "OK\n");

    fprintf(stdout, "Waiting for threads to exit.......");
    apr_thread_join(&s1, t1);
    apr_thread_join(&s2, t2);
    apr_thread_join(&s3, t3);
    apr_thread_join(&s4, t4);
    fprintf (stdout, "OK\n");   

    fprintf(stdout, "Checking if locks worked......."); 
    if (x != 40000) {
        fprintf(stderr, "The locks didn't work????  %d\n", x);
    }
    else {
        fprintf(stdout, "Everything is working!\n");
    }

    return 1;
}