thread.c

Apache V2.0.15 Alpha For Linuxhttpd-2_0_15-alpha.tar.Z

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#define INCL_DOSERRORS
#define INCL_DOS
#include "threadproc.h"
#include "apr_thread_proc.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_portable.h"
#include "fileio.h"
#include <stdlib.h>

apr_status_t apr_threadattr_create(apr_threadattr_t **new, apr_pool_t *cont)
{
    (*new) = (apr_threadattr_t *)apr_palloc(cont, sizeof(apr_threadattr_t));

    if ((*new) == NULL) {
        return APR_ENOMEM;
    }

    (*new)->cntxt = cont;
    (*new)->attr = 0;
    return APR_SUCCESS;
}



apr_status_t apr_threadattr_detach_get(apr_threadattr_t *attr, apr_int32_t on)
{
    attr->attr |= APR_THREADATTR_DETACHED;
    return APR_SUCCESS;
}



apr_status_t apr_threadattr_detach_set(apr_threadattr_t *attr)
{
    return (attr->attr & APR_THREADATTR_DETACHED) ? APR_DETACH : APR_NOTDETACH;
}



static void apr_thread_begin(void *arg)
{
  apr_thread_t *thread = (apr_thread_t *)arg;
  thread->rv = thread->func(thread->data);
}



apr_status_t apr_thread_create(apr_thread_t **new, apr_threadattr_t *attr, 
                             apr_thread_start_t func, void *data, 
                             apr_pool_t *cont)
{
    apr_status_t stat;
    apr_thread_t *thread;
 
    thread = (apr_thread_t *)apr_palloc(cont, sizeof(apr_thread_t));
    *new = thread;

    if (thread == NULL) {
        return APR_ENOMEM;
    }

    thread->cntxt = cont;
    thread->attr = attr;
    thread->func = func;
    thread->data = data;
    stat = apr_pool_create(&thread->cntxt, cont);
    
    if (stat != APR_SUCCESS) {
        return stat;
    }

    if (attr == NULL) {
        stat = apr_threadattr_create(&thread->attr, thread->cntxt);
        
        if (stat != APR_SUCCESS) {
            return stat;
        }
    }
    
    if (thread->attr->attr & APR_THREADATTR_DETACHED)
        thread->tid = _beginthread((os2_thread_start_t)func, NULL, 
                                   APR_THREAD_STACKSIZE, data);
    else
        thread->tid = _beginthread(apr_thread_begin, NULL, 
                                   APR_THREAD_STACKSIZE, thread);
        
    if (thread->tid < 0) {
        return errno;
    }

    return APR_SUCCESS;
}



apr_status_t apr_thread_exit(apr_thread_t *thd, apr_status_t *retval)
{
    thd->rv = retval;
    _endthread();
    return -1; /* If we get here something's wrong */
}



apr_status_t apr_thread_join(apr_status_t *retval, apr_thread_t *thd)
{
    ULONG rc;
    TID waittid = thd->tid;

    if (thd->attr->attr & APR_THREADATTR_DETACHED)
        return APR_EINVAL;

    rc = DosWaitThread(&waittid, DCWW_WAIT);

    if (rc == ERROR_INVALID_THREADID)
        rc = 0; /* Thread had already terminated */

    *retval = (apr_status_t)thd->rv;
    return APR_OS2_STATUS(rc);
}



apr_status_t apr_thread_detach(apr_thread_t *thd)
{
    thd->attr->attr |= APR_THREADATTR_DETACHED;
    return APR_SUCCESS;
}



apr_status_t apr_os_thread_get(apr_os_thread_t **thethd, apr_thread_t *thd)
{
    *thethd = &thd->tid;
    return APR_SUCCESS;
}



apr_status_t apr_os_thread_put(apr_thread_t **thd, apr_os_thread_t *thethd, 
                             apr_pool_t *cont)
{
    if ((*thd) == NULL) {
        (*thd) = (apr_thread_t *)apr_pcalloc(cont, sizeof(apr_thread_t));
        (*thd)->cntxt = cont;
    }
    (*thd)->tid = *thethd;
    return APR_SUCCESS;
}



apr_status_t apr_thread_data_get(void **data, const char *key, apr_thread_t *thread)
{
    return apr_pool_userdata_get(data, key, thread->cntxt);
}



apr_status_t apr_thread_data_set(void *data, const char *key,
                              apr_status_t (*cleanup) (void *),
                              apr_thread_t *thread)
{
    return apr_pool_userdata_set(data, key, cleanup, thread->cntxt);
}