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|
/*@@
@file Startup.c
@date Wed Sep 13 21:26:56 2000
@author Tom Goodale
@desc
Scheduled routines for the HTTPD thorn.
@enddesc
@version $Header$
@@*/
#include "cctk.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef CCTK_PTHREADS
#include <pthread.h>
#endif
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "httpd.h"
#include "Steer.h"
#include "Redirect.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusConnect_HTTPD_Startup_c);
/********************************************************************
********************* Local Data Types ***********************
********************************************************************/
/********************************************************************
********************* Local Routine Prototypes *********************
********************************************************************/
#ifdef CCTK_PTHREADS
static void * HTTP_Thread(void *cctkGH);
static void HTTP_SetupPollingThread(cGH *cctkGH);
#endif
/********************************************************************
***************** Scheduled Routine Prototypes *********************
********************************************************************/
int HTTP_StartServer(void);
int HTTP_FirstServ(void);
void HTTP_Work(CCTK_ARGUMENTS);
int HTTP_Shutdown(void);
/********************************************************************
********************* Other Routine Prototypes *********************
********************************************************************/
/********************************************************************
********************* Local Data *****************************
********************************************************************/
#ifdef CCTK_PTHREADS
static pthread_t polling_thread;
static int thread_started = 0;
#endif
/********************************************************************
********************* External Routines **********************
********************************************************************/
/*@@
@routine HTTP_StartServer
@date Wed Sep 13 21:26:56 2000
@author Tom Goodale
@desc
Starts the webserver.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int HTTP_StartServer(void)
{
int use_port;
char *environ_port;
DECLARE_CCTK_PARAMETERS
#ifndef CCTK_PTHREADS
if (use_pthreads)
{
CCTK_WARN (1, "Parameter 'HTTPD::use_pthreads' is set to \"yes\" but you "
"didn't configure with PTHREADS. Setting will be ignored.");
}
#endif
/* get HTTPD port to use from the 'port' parameter or the shell environment */
use_port = port;
environ_port = getenv ("HTTPD_PORT");
if (environ_port)
{
use_port = atoi (environ_port);
if (use_port >= 1 && use_port <= 65535)
{
CCTK_VInfo (CCTK_THORNSTRING, "Environment variable HTTPD_PORT is set to "
"%d and will override parameter setting from 'HTTPD::port'",
use_port);
}
else
{
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Environment variable HTTPD_PORT is set to '%s' which cannot "
"be parsed as a valid port number. Using parameter setting "
"'HTTPD::port = %d' instead.", environ_port, (int) port);
use_port = port;
}
}
if(CCTK_MyProc(NULL) == 0)
{
/* Does the server provide any pages by default ? */
if(provide_pages)
{
HTTP_RegisterPages();
}
HTTP_SetupServer(use_port, queue_length, hunt);
}
/* Do we need to redirect to a master server ? */
HTTP_SetupRedirect(use_port,queue_length,hunt);
return 0;
}
/*@@
@routine HTTP_FirstServ
@date Tue Nov 12 20:32:36 2002
@author Tom Goodale
@desc
Listen for connection requests.
@enddesc
@calls
@calledby
@history
@hdate Tue Nov 12 20:33:07 2002
@hauthor Tom Goodale
@hdesc This was originally in HTTP_StartServer but
that made it impossible to spawn a task telling
it where the webserver was if httpd::pause was "true".
@endhistory
@@*/
int HTTP_FirstServ(void)
{
httpState state;
HTTP_UpdateState(NULL, &state);
do
{
if(HTTP_IsServer())
{
HTTP_Poll(NULL, state.timeout_seconds, state.timeout_useconds);
}
if(state.steer == 1)
{
HTTP_SteerDispatch();
HTTP_UpdateState(NULL, &state);
}
if(state.terminate)
{
HTTP_Terminate(NULL);
}
} while(state.paused);
return 0;
}
/*@@
@routine HTTP_Work
@date Wed Sep 13 21:26:56 2000
@author Tom Goodale
@desc
Main working routine for the webserver.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
void HTTP_Work(CCTK_ARGUMENTS)
{
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_PARAMETERS
httpState state;
#ifdef CCTK_PTHREADS
if(HTTP_IsServer() && use_pthreads && ! thread_started)
{
HTTP_SetupPollingThread(cctkGH);
}
#endif
HTTP_UpdateState(cctkGH, &state);
do
{
#ifdef CCTK_PTHREADS
if(!use_pthreads)
{
#endif
if(HTTP_IsServer())
{
HTTP_Poll(cctkGH, state.timeout_seconds, state.timeout_useconds);
}
#ifdef CCTK_PTHREADS
}
#endif
if(state.steer == 1)
{
HTTP_SteerDispatch();
HTTP_UpdateState(cctkGH, &state);
}
if(state.terminate)
{
HTTP_Terminate(cctkGH);
}
} while(state.paused);
}
/*@@
@routine HTTP_Shutdown
@date Wed Sep 13 21:26:56 2000
@author Tom Goodale
@desc
Shutdown routine for the webserver.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int HTTP_Shutdown(void)
{
DECLARE_CCTK_PARAMETERS
#ifdef CCTK_PTHREADS
/* Wait for the polling thread to exit */
if(HTTP_IsServer() && use_pthreads && thread_started)
{
CCTK_ParameterSet("terminate", CCTK_THORNSTRING, "yes");
pthread_join(polling_thread, NULL);
}
#endif
if(HTTP_IsServer())
{
HTTP_ShutdownServer();
}
return 0;
}
/********************************************************************
********************* Local Routines *************************
********************************************************************/
/*@@
@routine HTTP_Thread
@date Wed Oct 25 17:04:59 2000
@author Tom Goodale
@desc
The http thread routine.
@enddesc
@calls
@calledby
@history
@endhistory
@var cctkGH
@vdesc The cGH
@vtype cGH *
@vio inout
@vcomment
@endvar
@@*/
#ifdef CCTK_PTHREADS
static void * HTTP_Thread(void *cctkGH)
{
CCTK_INT terminate;
int type;
do
{
/* Only poll for a few seconds in case we are terminated */
HTTP_Poll((cGH *)cctkGH, 10, 0);
terminate = *(const CCTK_INT *)CCTK_ParameterGet("terminate",CCTK_THORNSTRING, &type);
} while(! terminate);
return NULL;
}
/*@@
@routine HTTP_SetupPollingThread
@date Wed Oct 25 17:05:38 2000
@author Tom Goodale
@desc
Sets up the http polling thread.
@enddesc
@calls
@calledby
@history
@endhistory
@var cctkGH
@vdesc The cGH
@vtype cGH *
@vio inout
@vcomment
@endvar
@@*/
static void HTTP_SetupPollingThread(cGH *cctkGH)
{
if(pthread_create(&polling_thread, NULL, HTTP_Thread, (void *)cctkGH))
{
perror("pthread_create: ");
CCTK_Exit(cctkGH,99);
}
else
{
thread_started = 1;
}
}
#endif /* CCTK_PTHREADS */
|
