sphthread.h

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/*
 * Copyright (c) 2007-2014 IBM Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation, Steven Munroe - initial API and implementation
 * sjm 2010-09-05       Added externs for proc/thread ID 
 *                      Added fast inline PID/TID get functions *
 *     IBM Corporation, Adhemerval Zanella - documentation
 */

#ifndef __SPHTHREAD_H
#define __SPHTHREAD_H

#include <unistd.h>

#ifdef __cplusplus
#define __C__ "C"
#else
#define __C__
#endif

extern __C__ pid_t
sphdeGetPID (void);

extern __C__ pid_t
sphdeGetTID (void);

extern __C__ char *
sphdeGetCmdLine (void);

extern pid_t procID;

static inline int
sphFastGetPID (void)
{
  int pid = procID;
  if (__builtin_expect ((!pid), 0))
    {
      pid = sphdeGetPID ();
    }
  return pid;
}

extern __thread pid_t threadID __attribute__ ((tls_model ("initial-exec")));

static inline int
sphFastGetTID (void)
{
  int tid = threadID;
  if (__builtin_expect ((!tid), 0))
    {
      tid = sphdeGetTID ();
    }
  return tid;
}

#endif