CSE2410 Fall 2014 Bounce

#ifndef XTHREAD_H_

#define XTHREAD_H_

/* whether word reads are potentially non-atomic.

 * this is conservatice, likely most arches this runs

 * on have atomic word read/writes.

 */

#ifndef WORDACCESS_UNSAFE

# if __i386 || __x86_64

#  define WORDACCESS_UNSAFE 0

# else

#  define WORDACCESS_UNSAFE 1

# endif

#endif

/////////////////////////////////////////////////////////////////////////////

#ifdef _WIN32

typedef int ssize_t;

#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls

#define _WIN32_WINNT 0x400

#include <stdio.h>//D

#include <fcntl.h>

#include <io.h>

#include <time.h>

#include <winsock2.h>

#include <process.h>

#include <windows.h>

#include <pthread.h>

#define sigset_t int

#define sigfillset(a)

#define pthread_sigmask(a,b,c)

#define sigaddset(a,b)

#define sigemptyset(s)

#define sigfillset(s)

typedef pthread_mutex_t mutex_t;

#define X_MUTEX_INIT           PTHREAD_MUTEX_INITIALIZER

#define X_LOCK(mutex)          pthread_mutex_lock (&(mutex))

#define X_UNLOCK(mutex)        pthread_mutex_unlock (&(mutex))

typedef pthread_cond_t cond_t;

#define X_COND_INIT                     PTHREAD_COND_INITIALIZER

#define X_COND_SIGNAL(cond)             pthread_cond_signal (&(cond))

#define X_COND_WAIT(cond,mutex)         pthread_cond_wait (&(cond), &(mutex))

#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))

typedef pthread_t thread_t;

#define X_THREAD_PROC(name) void *name (void *thr_arg)

#define X_THREAD_ATFORK(a,b,c)

static int

thread_create (thread_t *tid, void *(*proc)(void *), void *arg)

{

  int retval;

  pthread_attr_t attr;

  pthread_attr_init (&attr);

  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);

  retval = pthread_create (tid, &attr, proc, arg) == 0;

  pthread_attr_destroy (&attr);

  return retval;

}

#define respipe_read(a,b,c)  PerlSock_recv ((a), (b), (c), 0)

#define respipe_write(a,b,c) send ((a), (b), (c), 0)

#define respipe_close(a)     PerlSock_closesocket ((a))

#else

/////////////////////////////////////////////////////////////////////////////

#if __linux && !defined(_GNU_SOURCE)

# define _GNU_SOURCE

#endif

/* just in case */

#define _REENTRANT 1

#if __solaris

# define _POSIX_PTHREAD_SEMANTICS 1

/* try to bribe solaris headers into providing a current pthread API

 * despite environment being configured for an older version.

 */

# define __EXTENSIONS__ 1

#endif

#include <unistd.h>

#include <fcntl.h>

#include <signal.h>

#include <limits.h>

#include <pthread.h>

typedef pthread_mutex_t mutex_t;

#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)

# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP

#else

# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER

#endif

#define X_LOCK(mutex)   pthread_mutex_lock   (&(mutex))

#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))

typedef pthread_cond_t cond_t;

#define X_COND_INIT PTHREAD_COND_INITIALIZER

#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond))

#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex))

#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))

typedef pthread_t thread_t;

#define X_THREAD_PROC(name) static void *name (void *thr_arg)

#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child)

// the broken bsd's once more

#ifndef PTHREAD_STACK_MIN

# define PTHREAD_STACK_MIN 0

#endif

static int

thread_create (thread_t *tid, void *(*proc)(void *), void *arg)

{

  int retval;

  sigset_t fullsigset, oldsigset;

  pthread_attr_t attr;

  pthread_attr_init (&attr);

  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);

  pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096 * 4

                                    ? sizeof (long) * 4096 * 4 : PTHREAD_STACK_MIN);

#ifdef PTHREAD_SCOPE_PROCESS

  pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);

#endif

  sigfillset (&fullsigset);

  pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);

  retval = pthread_create (tid, &attr, proc, arg) == 0;

  pthread_sigmask (SIG_SETMASK, &oldsigset, 0);

  pthread_attr_destroy (&attr);

  return retval;

}

#define respipe_read(a,b,c)  read  ((a), (b), (c))

#define respipe_write(a,b,c) write ((a), (b), (c))

#define respipe_close(a)     close ((a))

#endif

#endif