thread.c

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

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 */

#include "apr_private.h"
#include "win32/threadproc.h"
#include "apr_thread_proc.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_portable.h"
#include <process.h>


APR_DECLARE(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;
    return APR_SUCCESS;
}

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

APR_DECLARE(apr_status_t) apr_threadattr_detach_set(apr_threadattr_t *attr)
{
    if (attr->detach == 1)
        return APR_DETACH;
    return APR_NOTDETACH;
}

APR_DECLARE(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;
	unsigned temp;
    int lasterror;
 
    (*new) = (apr_thread_t *)apr_palloc(cont, sizeof(apr_thread_t));

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

    (*new)->cntxt = cont;
    
    stat = apr_pool_create(&(*new)->cntxt, cont);
    if (stat != APR_SUCCESS) {
        return stat;
    }

    /* Use 0 for Thread Stack Size, because that will default the stack to the
     * same size as the calling thread. 
     */
    if (((*new)->td = (HANDLE *)_beginthreadex(NULL, 0, (unsigned int (APR_THREAD_FUNC *)(void *))func,
                                               data, 0, &temp)) == 0) {
        lasterror = apr_get_os_error();
        return APR_EEXIST; 
        /* MSVC++ doc doesn't mention any additional error info 
         * XXX: need to check the sources
         */
    }

    if (attr && attr->detach) {
        CloseHandle((*new)->td);
    }

    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_exit(apr_thread_t *thd,
                                          apr_status_t *retval)
{
    apr_pool_destroy(thd->cntxt);
    _endthreadex(*retval);
	return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_thread_join(apr_status_t *retval,
                                          apr_thread_t *thd)
{
    apr_status_t stat;

    if ((stat = WaitForSingleObject(thd->td, INFINITE)) == WAIT_OBJECT_0) {
        if (GetExitCodeThread(thd->td, retval) == 0) {
            return APR_SUCCESS;
        }
        return apr_get_os_error();
    }
    else {
        return stat;
    }
}

APR_DECLARE(apr_status_t) apr_thread_detach(apr_thread_t *thd)
{
    if (CloseHandle(thd->td)) {
        return APR_SUCCESS;
    }
    else {
        return apr_get_os_error();
    }
}

APR_DECLARE(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_DECLARE(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);
}

APR_DECLARE(apr_status_t) apr_os_thread_get(apr_os_thread_t **thethd,
                                            apr_thread_t *thd)
{
    if (thd == NULL) {
        return APR_ENOTHREAD;
    }
    *thethd = thd->td;
    return APR_SUCCESS;
}

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