rlwthread.cpp File Reference

#include <errno.h>
#include "rlwthread.h"
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <pthread.h>

Include dependency graph for rlwthread.cpp:

Go to the source code of this file.

Macros
#define	USE_OLD_JOIN
#define	TESTINGx

Functions
int	rlwthread_attr_init (pthread_attr_t *attr)
int	rlwthread_create (pthread_t *tid, const pthread_attr_t *attr, void *(*func)(void *), void *arg)
void	rlwthread_close_handle (pthread_t *tid)
void	rlwthread_exit (void *status)
int	rlwthread_join (pthread_t tid, void **status)
int	rlwthread_mutex_init (pthread_mutex_t *mptr, const pthread_mutexattr_t *attr)
int	rlwthread_mutex_destroy (pthread_mutex_t *mptr)
int	rlwthread_mutex_lock (pthread_mutex_t *mptr)
WINBASEAPI BOOL WINAPI	TryEnterCriticalSection (LPCRITICAL_SECTION lpCriticalSection)
int	rlwthread_mutex_trylock (pthread_mutex_t *mptr)
int	rlwthread_mutex_unlock (pthread_mutex_t *mptr)
int	rlwthread_cancel (pthread_t tid)
int	rlwrapinit_semaphore (WSEMAPHORE *s, int cmax)
int	rlwrapdestroy_semaphore (WSEMAPHORE *s)
int	rlwrapincrement_semaphore (WSEMAPHORE *s)
int	rlwrapwait_semaphore (WSEMAPHORE *s)
int	rlwthread_sleep (long msec)
void	rlsleep (long msec)

Macro Definition Documentation

#define TESTINGx

Definition at line 401 of file rlwthread.cpp.

#define USE_OLD_JOIN

Definition at line 112 of file rlwthread.cpp.

Function Documentation

void rlsleep

(

long

msec

)

Definition at line 393 of file rlwthread.cpp.

{
  rlwthread_sleep(msec);
}

int rlwrapdestroy_semaphore

(

WSEMAPHORE *

s

)

Definition at line 291 of file rlwthread.cpp.

{
#ifdef RLWIN32
  CloseHandle(s->hSemaphore);
#else
  rlwthread_mutex_destroy(&s->mutex);
#endif
  return 0;
}

int rlwrapincrement_semaphore

(

WSEMAPHORE *

s

)

Definition at line 307 of file rlwthread.cpp.

{
/* Increment the count of the semaphore. */
#ifdef RLWIN32

  if(!ReleaseSemaphore(
        s->hSemaphore,  /* handle of semaphore */
        1,              /* increase count by one */
        NULL) )         /* not interested in previous count */
  {
    return -1; /* Deal with the error. */
  }
  return 0;

#else

  pthread_mutex_lock(&s->mutex);
  if(s->nready == 0) pthread_cond_signal(&s->cond);
  s->nready++;
  pthread_mutex_unlock(&s->mutex);
  return 0;

#endif
}

int rlwrapinit_semaphore	(	WSEMAPHORE *	s,
		int	cmax
	)

Definition at line 265 of file rlwthread.cpp.

{
/* Create a semaphore with initial count=0 max. counts of cmax. */
#ifdef RLWIN32

  s->cmax = cmax;
  s->hSemaphore = CreateSemaphore(
    NULL,   /* no security attributes */
    0,      /* initial count */
    cmax,   /* maximum count */
    NULL);  /* unnamed semaphore */

  if(s->hSemaphore == NULL) return -1; /* Check for error. */
  return 0;

#else

  s->cmax   = cmax;
  s->nready = 0;
  rlwthread_mutex_init(&s->mutex, NULL);
  pthread_cond_init(&s->cond, NULL);
  return 0;

#endif
}

int rlwrapwait_semaphore

(

WSEMAPHORE *

s

)

Definition at line 338 of file rlwthread.cpp.

{
#ifdef RLWIN32

  int ret;
  ret = WaitForSingleObject(
        s->hSemaphore,   /* handle of semaphore */
        INFINITE);       /* infinite time-out interval */
  if(ret) return 0;
  return 0;

#else

  pthread_mutex_lock(&s->mutex);
  while(s->nready == 0)
  {
    pthread_cond_wait(&s->cond,&s->mutex);
  }  
  s->nready--;
  pthread_mutex_unlock(&s->mutex);
  return 0;

#endif
}

int rlwthread_attr_init

(

pthread_attr_t *

attr

)

Definition at line 36 of file rlwthread.cpp.

{
#ifdef RLWIN32
  memset(attr,0,sizeof(pthread_attr_t));
  return 0;
#else
  return pthread_attr_init(attr);
#endif
}

int rlwthread_cancel

(

pthread_t

tid

)

Definition at line 250 of file rlwthread.cpp.

{
#ifdef RLWIN32
  return (int) CloseHandle((HANDLE) tid);
#else
  return pthread_cancel(tid);
#endif
}

void rlwthread_close_handle

(

pthread_t *

tid

)

Definition at line 79 of file rlwthread.cpp.

{
#ifdef RLWIN32
  CloseHandle((HANDLE) *tid);
#else
  if(tid == NULL) return;
#endif
}

int rlwthread_create	(	pthread_t *	tid,
		const pthread_attr_t *	attr,
		void *(*)(void *)	func,
		void *	arg
	)

Definition at line 54 of file rlwthread.cpp.

{
#ifdef RLWIN32
  HANDLE handle;
  int ThreadId;
  int dwStackSize = 0;
  if(attr != NULL) dwStackSize = attr->__stacksize;
  handle = CreateThread( NULL,                    /* pointer to thread security attributes */
                         dwStackSize,             /* initial thread stack size, in bytes   */
 (LPTHREAD_START_ROUTINE)func,                    /* pointer to thread function            */
                         arg,                     /* argument for new thread               */
                         0,                       /* creation flags                        */
       (unsigned long *) &ThreadId                /* pointer to returned thread identifier */
                       );
  *tid = (pthread_t) handle;
  if(handle == NULL) return -1;
  else               return 0;
#else
  int ret = pthread_create(tid,attr,func,arg);
  pthread_detach(*tid);
  return ret;
#endif
}

void rlwthread_exit

(

void *

status

)

Definition at line 94 of file rlwthread.cpp.

{
#ifdef RLWIN32
  DWORD *ptr;
  ptr = (DWORD *) status;
  if(status == NULL) ExitThread((DWORD) 0);
  else               ExitThread(*ptr);
#else
  pthread_exit(status);
#endif
}

int rlwthread_join	(	pthread_t	tid,
		void **	status
	)

Definition at line 113 of file rlwthread.cpp.

{
#ifdef RLWIN32

#ifdef USE_OLD_JOIN
  DWORD exitcode;
  while(1)
  {
    GetExitCodeThread((HANDLE) tid,&exitcode);
    if(exitcode != STILL_ACTIVE) return exitcode;
    Sleep(10); /* sleep 10 msec */
  }
#else
  int result = 1;
  DWORD exitcode;
  DWORD dwWait = WaitForSingleObject((HANDLE) tid, INFINITE);
  if(dwWait == WAIT_OBJECT_0)
  {
    if(GetExitCodeThread((HANDLE) tid, &exitcode) == TRUE)
    {
      result = 0;
      *status = (int) exitcode; // ???
    }
    else
    {
      result = GetLastError();
    }
  }
  else if(dwWait == WAIT_FAILED)
  {
    result = GetLastError();
  }
  return result;
#endif

#else
  return pthread_join(tid,status);
#endif
}

int rlwthread_mutex_destroy

(

pthread_mutex_t *

mptr

)

Definition at line 175 of file rlwthread.cpp.

{
#ifdef RLWIN32
  CloseHandle(*mptr);
  //old DeleteCriticalSection(mptr);
  return 0;
#else
  return pthread_mutex_destroy(mptr);
#endif
}

int rlwthread_mutex_init	(	pthread_mutex_t *	mptr,
		const pthread_mutexattr_t *	attr
	)

Definition at line 158 of file rlwthread.cpp.

{
#ifdef RLWIN32
  HANDLE handle = CreateMutex(NULL, FALSE, NULL);
  if(handle) *mptr = handle;
  //old InitializeCriticalSection(mptr);
  return 0;
#else
  return pthread_mutex_init(mptr,attr);
#endif
}

int rlwthread_mutex_lock

(

pthread_mutex_t *

mptr

)

Definition at line 190 of file rlwthread.cpp.

{
#ifdef RLWIN32
  if(WaitForSingleObject(*mptr, INFINITE) == WAIT_OBJECT_0) return 0;
  //old EnterCriticalSection(mptr); // pointer to critical section object
  return 0;
#else
  return pthread_mutex_lock(mptr);
#endif
}

int rlwthread_mutex_trylock

(

pthread_mutex_t *

mptr

)

Definition at line 212 of file rlwthread.cpp.

{
#ifdef RLWIN32
  DWORD ret;

  ret = WaitForSingleObject(*mptr, 0);
  if(ret == WAIT_OBJECT_0) return 1;
  return 0;
  //old ret = TryEnterCriticalSection(mptr); // pointer to critical section object
  return ret;
#else
  int ret;

  ret = pthread_mutex_trylock(mptr);
  if(ret == EBUSY) return 0;
  return 1;
#endif
}

int rlwthread_mutex_unlock

(

pthread_mutex_t *

mptr

)

Definition at line 235 of file rlwthread.cpp.

{
#ifdef RLWIN32
  ReleaseMutex(*mptr);
  //old LeaveCriticalSection(mptr);
  return 0;
#else
  return pthread_mutex_unlock(mptr);
#endif
}

int rlwthread_sleep

(

long

msec

)

Definition at line 363 of file rlwthread.cpp.

{
#ifdef RLWIN32
  Sleep(msec);
  return 0;
#endif

#ifdef RLUNIX
  fd_set wset,rset,eset;
  struct timeval timeout;

  FD_ZERO(&rset);
  FD_ZERO(&wset);
  FD_ZERO(&eset);
  timeout.tv_sec  = msec / 1000;
  timeout.tv_usec = (msec % 1000) * 1000;
  select(1,&rset,&wset,&eset,&timeout);
  return 0;
#endif

#ifdef __VMS
  struct timespec interval;

  interval.tv_sec  =  msec / 1000;
  interval.tv_nsec = (msec % 1000) * 1000 * 1000; /* wait msec msec */
  pthread_delay_np(&interval);
  return 0;
#endif
}

WINBASEAPI BOOL WINAPI TryEnterCriticalSection

(

LPCRITICAL_SECTION

lpCriticalSection

)