_CODE_ACCESS FILE *tmpfile(void)
{
char tfname[L_tmpnam];
FILE *_fp = NULL;
if (tmpnam(tfname)) _fp = fopen(tfname, "wb+");
/*------------------------------------------------------------------------*/
/* A non-NULL _fp returned from fopen() is assumed to be a pointer to a */
/* file stream which is a shared resource. */
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream and __TI_tmpnams[]. In this case, _fp will be */
/* updated, so we must ensure that the local copy of _fp and _tmpnams[] */
/* are flushed to shared memory before leaving the critical section */
/* (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
if (_fp)
{
__TI_file_lock(_fp);
_SET(_fp, _TMPFILE);
__TI_resource_lock(__TI_LOCK_TMPNAMS);
strcpy(__TI_tmpnams[_fp->fd], tfname);
__TI_data_synch_WBINV(&__TI_tmpnams[_fp->fd], L_tmpnam);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_resource_unlock(__TI_LOCK_TMPNAMS);
__TI_file_unlock(_fp);
}
return (_fp);
}
_CODE_ACCESS void __TI_buff_read(FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
int errchk,
j,
buffer_size = _fp->bufend - _fp->buf;
/*------------------------------------------------------------------------*/
/* If this is a line buffered stream, flush all line buffered streams. */
/* The current thread in a multi-threaded application must protect access */
/* to __TI_LOCK_FILE_TBL shared resources (_ftable[] and __TI_ft_end) and */
/* each file stream that is flushed. Ensure that the local copy of */
/* _ftable[] is flushed to shared memory and the local copy of */
/* __TI_ft_end is invalidated before leaving the critical section. */
/*------------------------------------------------------------------------*/
if (_BUFFMODE(_fp) == _IOLBF)
{
__TI_resource_lock(__TI_LOCK_FILE_TBL);
for (j=0; j < __TI_ft_end; j++)
if (_BUFFMODE(&_ftable[j]) == _IOLBF)
{
__TI_file_lock(&_ftable[j]);
__TI_doflush(&_ftable[j]);
__TI_data_synch_WBINV(&_ftable[j], sizeof(FILE));
__TI_file_unlock(&_ftable[j]);
}
__TI_data_synch_WBINV(&_ftable, sizeof(_ftable));
__TI_data_synch_INV(&__TI_ft_end, sizeof(__TI_ft_end));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
}
/*------------------------------------------------------------------------*/
/* Read in the next characters from the file. */
/*------------------------------------------------------------------------*/
errchk = read(_fp->fd, (char *)_fp->buf, buffer_size);
/*------------------------------------------------------------------------*/
/* Adjust the buffer pointers. */
/*------------------------------------------------------------------------*/
_fp->buff_stop = _fp->buf + errchk;
_fp->pos = _fp->buf;
/*------------------------------------------------------------------------*/
/* Set any error flags if necessary. */
/*------------------------------------------------------------------------*/
switch (errchk)
{
case -1 : _SET(_fp, _STATERR);
break;
case 0 : _SET(_fp, _STATEOF);
break;
}
return;
}
int atexit(void (*fun)())
{
int err_code = 1;
/*-----------------------------------------------------------------------*/
/* For multi-threaded applications, access to shared resources must be */
/* protected. In this case, both atexit_func_count and atexit_func[] are */
/* shared resources that may be accessed and updated by this function. */
/* Use the __TI_LOCK_ATEXIT mutex to create a critical section and */
/* that the local copies of both atexit_func_count and atexit_func[] are */
/* flushed to shared memory. */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_ATEXIT);
/*-----------------------------------------------------------------------*/
/* We allow MAX_ATEXIT_FUN calls to atexit(); see the comment above the */
/* definition of MAX_ATEXIT_FUN for more details. BIOS has a specific */
/* request that we NOT use malloc here. If anyone requires additional */
/* atexit calls for use by RTS or OS, then the MAX_ATEXIT_FUN limit */
/* (above) must be adjusted and the library rebuilt (CQ20012, CQ20600). */
/*-----------------------------------------------------------------------*/
if (atexit_func_count < MAX_ATEXIT_FUN)
{
/*--------------------------------------------------------------------*/
/* Choose the next available entry for registering atexit functions. */
/*--------------------------------------------------------------------*/
int allocated_entry = atexit_func_count++;
/*--------------------------------------------------------------------*/
/* Populate the allocated entry with the necessary details. */
/*--------------------------------------------------------------------*/
atexit_func[allocated_entry].next = NULL;
atexit_func[allocated_entry].object = &__atexit_func_id__;
atexit_func[allocated_entry].fun.dfun = fun;
/*--------------------------------------------------------------------*/
/* Register the atexit function for processing at exit. */
/*--------------------------------------------------------------------*/
__add_dtor(&(atexit_func[allocated_entry]));
err_code = 0;
}
__TI_data_synch_WBINV(&atexit_func_count, sizeof(int));
__TI_data_synch_WBINV(&atexit_func, sizeof(atexit_func));
__TI_resource_unlock(__TI_LOCK_ATEXIT);
return err_code;
}
_CODE_ACCESS int fprintf(FILE *_fp, const char *_format, ...)
{
va_list _ap;
int rval;
char *fptr = (char *)_format;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* If the current stream is not associated with a file, return an error. */
/*------------------------------------------------------------------------*/
if (_fp->fd == -1)
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (-1);
}
va_start(_ap, _format);
rval = __TI_printfi(&fptr, _ap, (void *)_fp, _outc, _outs);
va_end(_ap);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (rval);
}
_CODE_ACCESS int remove_device(char *name)
{
_DEVICE *ptr;
/*-------------------------------------------------------------------------*/
/* FIND RECORD AND SET NAME TO NULL */
/*-------------------------------------------------------------------------*/
/* CRITICAL REGION PROTECTS ACCESS TO _device[] */
/*-------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_DEVICE_TBL);
if (!(ptr = finddevice(name)))
{
__TI_data_synch_INV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
return -1;
}
ptr->name[0] = '\0';
__TI_data_synch_WBINV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
return 0;
}
void __add_dtor(DTOR_LIST *dtor_entry)
{
/*-----------------------------------------------------------------------*/
/* REGISTER call_dtors() SO exit() WILL CALL IT. call_dtors() ISN'T */
/* CALLED DIRECTLY FROM exit() SO THAT IT ISN'T LINKED IN IF NOT USED. */
/*-----------------------------------------------------------------------*/
__TI_dtors_ptr = call_dtors;
__TI_data_synch_WBINV(&__TI_dtors_ptr, sizeof(__TI_dtors_ptr));
/*-----------------------------------------------------------------------*/
/* ADD THE DESTRUCTOR TO THE LIST. */
/*-----------------------------------------------------------------------*/
dtor_entry->next = dtors;
dtors = dtor_entry;
__TI_data_synch_WBINV(&dtors, sizeof(dtors));
}
_CODE_ACCESS int vprintf(const char *_format, va_list _ap)
{
int result;
char *fptr = (char *)_format;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to stdout. In this case, stdout may be updated, so we must ensure that */
/* the local copy of stdout is flushed to shared memory before leaving the*/
/* critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(stdout);
/*------------------------------------------------------------------------*/
/* If the current stream is not associated with a file, return an error. */
/*------------------------------------------------------------------------*/
if (stdout->fd == -1)
{
__TI_data_synch_INV(stdout, sizeof(FILE));
__TI_file_unlock(stdout);
return (EOF);
}
result = (__TI_printfi(&fptr, _ap, (void *)stdout, _outc, _outs));
__TI_data_synch_WBINV(stdout, sizeof(FILE));
__TI_file_unlock(stdout);
return (result);
}
static FILE *_search_fp(void)
{
static _DATA_ACCESS int init = 0;
int index;
/*-----------------------------------------------------------------------*/
/* Initialize the file table to have 'empty' slots using -1. */
/*-----------------------------------------------------------------------*/
if (!init)
for (init = 1,index = 3; index < _NFILE; _ftable[index++].fd = -1);
/*------------------------------------------------------------------------*/
/* Search the file table for an empty slot. Return a NULL if there */
/* aren't any available. */
/*------------------------------------------------------------------------*/
/* _ft_end is a shared resource in multi-threaded applications, so the */
/* updated value stored in the data cache of the core that the current */
/* thread is running on must be flushed to shared memory. */
/*------------------------------------------------------------------------*/
for(index = 0; (index < _ft_end) && _ftable[index].fd != -1; index++);
if (index == _NFILE) return (NULL);
if (index == _ft_end) _ft_end++;
__TI_data_synch_WBINV(&_ft_end, sizeof(_ft_end));
/*------------------------------------------------------------------------*/
/* Initialize the new stream. */
/*------------------------------------------------------------------------*/
memset(&_ftable[index], '\0', sizeof(FILE));
return (&_ftable[index]);
}
_CODE_ACCESS int HOSTread(int dev_fd, char *buf, unsigned count)
{
int result;
/*-----------------------------------------------------------------------*/
/* CRITICAL REGION TO PROTECT ACCESSES TO parmbuf[] AND _CIOBUF_ (see */
/* file header comment above for more about mutexes and data coherency). */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_HOST_CIO);
if (count > BUFSIZ) count = BUFSIZ;
LOADSHORT(parmbuf,dev_fd,0);
LOADSHORT(parmbuf,count,2);
__TI_writemsg(_DTREAD,parmbuf,NULL,0);
__TI_readmsg(parmbuf,buf);
result = UNLOADSHORT(parmbuf,0);
__TI_data_synch_WBINV(&parmbuf, sizeof(parmbuf));
__TI_resource_unlock(__TI_LOCK_HOST_CIO);
return result;
}
_CODE_ACCESS int fflush(register FILE *_fp)
{
int result = 0;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to __TI_LOCK_FILE_TBL shared resources (_ftable[], __TI_ft_end, init */
/* and __TI_cleanup_ptr. init is a static local in __TI_search_fp() in */
/* fopen.c). In this case, __TI_doflush will update the specified file */
/* streams, so we must also protect access to the streams. */
/* The below loop will cache a local copy of _ftable[] and __TI_ft_end. */
/* Ensure that the local copy of _ftable[] and each flushed file stream */
/* is flushed to shared memory and the local copy of __TI_ft_end is */
/* invalidated before leaving the critical section. */
/*------------------------------------------------------------------------*/
/*------------------------------------------------------------------------*/
/* If _fp is not a NULL pointer, call __TI_doflush for that stream. */
/* Otherwise, call __TI_doflush for all file streams in the table that are*/
/* active. */
/*------------------------------------------------------------------------*/
if (_fp)
{
__TI_file_lock(_fp);
result = __TI_doflush(_fp);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
}
else
{
int index;
__TI_resource_lock(__TI_LOCK_FILE_TBL);
for(index = 0; index < __TI_ft_end; index++)
if(_ftable[index].fd != -1)
{
__TI_file_lock(&_ftable[index]);
result |= __TI_doflush(&_ftable[index]);
__TI_data_synch_WBINV(&_ftable[index], sizeof(_ftable[index]));
__TI_file_unlock(&_ftable[index]);
}
__TI_data_synch_WBINV(&_ftable, sizeof(_ftable));
__TI_data_synch_INV(&__TI_ft_end, sizeof(__TI_ft_end));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
}
return (result);
}
_CODE_ACCESS char *tmpnam(char *_s)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
int fd;
__TI_resource_lock(__TI_LOCK_TMPNAM_COUNTER);
/*------------------------------------------------------------------------*/
/* Get a filename from _GETNAME */
/*------------------------------------------------------------------------*/
_getname(counter++, tfname);
/*------------------------------------------------------------------------*/
/* Check to see if the filename exists. Keep getting filenames until */
/* a unique one is found, or this function has reached its limit. */
/*------------------------------------------------------------------------*/
while (((fd=open(tfname, O_RDONLY, 0666)) >= 0) && (counter < TMP_MAX))
{
close(fd);
_getname(counter++, tfname);
}
if (counter >= TMP_MAX)
{
__TI_data_synch_WBINV(&counter, sizeof(counter));
__TI_resource_unlock(__TI_LOCK_TMPNAM_COUNTER);
return (NULL);
}
__TI_data_synch_WBINV(&counter, sizeof(counter));
__TI_resource_unlock(__TI_LOCK_TMPNAM_COUNTER);
/*------------------------------------------------------------------------*/
/* If _S is not NULL, store the new filename in it. */
/*------------------------------------------------------------------------*/
if (_s)
{
strcpy(_s, tfname);
return (_s);
}
return (tfname);
}
_CODE_ACCESS int close(int llv_fd)
{
int result;
#if defined(__TI_SHARED_DATA_SYNCHRONIZATION)
_DEVICE *dev_ptr = NULL;
#endif
if (llv_fd < 0 || llv_fd >= _NSTREAM) return -1;
/*------------------------------------------------------------------------*/
/* CALL FUNCTION FROM DEVICE TABLE TO PERFORM CLOSE FOR THIS DEVICE/FILE */
/* CLEAR STREAM TABLE ENTRY AND DEVICE FLAGS */
/*------------------------------------------------------------------------*/
/* CRITICAL REGION PROTECTS ACCESS TO _stream[] (see file header comment).*/
/*------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_STREAM_TBL);
if (_stream[llv_fd].dev == NULL)
{
__TI_data_synch_INV(&_stream[llv_fd], sizeof(_stream[llv_fd]));
__TI_resource_unlock(__TI_LOCK_STREAM_TBL);
return -1;
}
/*------------------------------------------------------------------------*/
/* We'll need to invalidate the device table entry that has the address */
/* of the CLOSE function in it, so hold on to its address. We guard the */
/* definition of dev_ptr here to avoid a "set but never refed" compile */
/* time error when building the RTS in a config that doesn't have shared */
/* data synchronization turned on. */
/*------------------------------------------------------------------------*/
#if defined(__TI_SHARED_DATA_SYNCHRONIZATION)
dev_ptr = _stream[llv_fd].dev;
#endif
if ( (result = (*(_stream[llv_fd].dev->CLOSE))(_stream[llv_fd].dfd)) != -1 )
{
_stream[llv_fd].dev->flags &= ~_BUSY;
_stream[llv_fd].dev = NULL;
}
/*------------------------------------------------------------------------*/
/* Invalidate both the device table entry that was referenced and the */
/* stream table entry associated with the input file descriptor (llv_fd). */
/* It is possible (though unlikely) that the contents of the device table */
/* entry and/or the stream table entry could be updated by another thread */
/* before this thread accesses either of those objects again. */
/*------------------------------------------------------------------------*/
/* For the address of the device table entry, we use a copy of */
/* _stream[llv_fd].dev (dev_ptr) that was made before _stream[llv_fd].dev */
/* gets modified in the above if block. */
/*------------------------------------------------------------------------*/
__TI_data_synch_INV(dev_ptr, sizeof(_DEVICE));
__TI_data_synch_WBINV(&_stream[llv_fd], sizeof(_stream[llv_fd]));
__TI_resource_unlock(__TI_LOCK_STREAM_TBL);
return result;
}
_CODE_ACCESS int fseek(register FILE *_fp, long _offset, int _ptrname)
{
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* If the current stream is not associated with a file, return an error. */
/*------------------------------------------------------------------------*/
if (_fp->fd == -1)
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
/*------------------------------------------------------------------------*/
/* When positioning to a location relative to the current location, */
/* adjust for the fact that there may be something in the buffer. */
/*------------------------------------------------------------------------*/
if(_ptrname == SEEK_CUR && _STCHK(_fp, _MODER) && _fp->pos)
_offset -= (_fp->buff_stop - _fp->pos);
__TI_doflush(_fp);
_UNSET(_fp, (_STATEOF | _UNGETC));
if ((lseek(_fp->fd, _offset, _ptrname)) == -1)
{
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (0);
}
_CODE_ACCESS FILE *fopen(const char *_fname, const char *_mode)
{
FILE *f;
/*-----------------------------------------------------------------------*/
/* This is a critical section because search_fp looks for a new file */
/* slot in the global table _ftable. */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_FILE_TBL);
f = _openfile(_fname, _search_fp(), _mode);
__TI_data_synch_WBINV(&_ftable, sizeof(_ftable));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
return f;
}
_CODE_ACCESS FILE *freopen(const char *_fname, const char *_mode, register FILE *_fp)
{
FILE *f;
/*-----------------------------------------------------------------------*/
/* This is a critical section because it expects the same slot in the */
/* global table _ftable to be available. */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_FILE_TBL);
_closefile(_fp);
f = _openfile(_fname, _fp, _mode);
__TI_data_synch_WBINV(&_ftable, sizeof(_ftable));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
return f;
}
_CODE_ACCESS void clearerr(FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* For multi-threaded applications, the _clearerr() call must be in a */
/* critical section that guarantees single-threaded access to the file */
/* stream. */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
_clearerr(_fp);
/*------------------------------------------------------------------------*/
/* Writeback local copy of the file stream to shared memory and */
/* invalidate the local copy so that next access will be read from shared */
/* memory. */
/*------------------------------------------------------------------------*/
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
}
_CODE_ACCESS int HOSTunlink(const char *path)
{
int result;
/*-----------------------------------------------------------------------*/
/* CRITICAL REGION TO PROTECT ACCESSES TO parmbuf[] AND _CIOBUF_ (see */
/* file header comment above for more about mutexes and data coherency). */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_HOST_CIO);
__TI_writemsg(_DTUNLINK,parmbuf,(char *)path,strlen(path) + 1);
__TI_readmsg(parmbuf,NULL);
result = UNLOADSHORT(parmbuf,0);
__TI_data_synch_WBINV(&parmbuf, sizeof(parmbuf));
__TI_resource_unlock(__TI_LOCK_HOST_CIO);
return result;
}
_CODE_ACCESS int HOSTclose(int dev_fd)
{
int result;
/*-----------------------------------------------------------------------*/
/* CRITICAL REGION TO PROTECT ACCESSES TO parmbuf[] AND _CIOBUF_ (see */
/* file header comment above for more about mutexes and data coherency). */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_HOST_CIO);
LOADSHORT(parmbuf,dev_fd,0);
__TI_writemsg(_DTCLOSE,parmbuf,NULL,0);
__TI_readmsg(parmbuf,NULL);
result = UNLOADSHORT(parmbuf,0);
__TI_data_synch_WBINV(&parmbuf, sizeof(parmbuf));
__TI_resource_unlock(__TI_LOCK_HOST_CIO);
return result;
}
__bool uncaught_exception() THROW_NOTHING()
/*
Return TRUE if an exception is in the process of being thrown.
*/
{
an_eh_stack_entry_ptr ehsep;
__bool result;
/* This function is used instead of simply using __curr_eh_stack_entry
because of a problem using this variable in code that also uses
it via generated EH code. */
ehsep = __get_curr_eh_stack_entry();
/*** START TI ADD ***/
__TI_resource_lock(__TI_LOCK_ATEXIT);
/*** END TI ADD ***/
/* TRUE should be returned if uncaught_exception() is called after
terminate() has been called by the implementation. */
result = terminate_called_by_runtime;
/*** START TI ADD ***/
__TI_data_synch_WBINV(&terminate_called_by_runtime,
sizeof(terminate_called_by_runtime));
__TI_resource_unlock(__TI_LOCK_ATEXIT);
/*** END TI ADD ***/
for (; result == FALSE && ehsep != NULL; ehsep = ehsep->next) {
if (ehsep->kind == ehsek_throw_processing_marker) {
/* We are processing a throw. An exception cannot be thrown here
without resulting in a call to terminate(). Note that this is
TRUE even if a try block is nested inside the throw processing
marker. */
result = TRUE;
} /* if */
} /* for */
return result;
} /* uncaught_exception */
_CODE_ACCESS off_t HOSTlseek(int dev_fd, off_t offset, int origin)
{
off_t result;
/*-----------------------------------------------------------------------*/
/* CRITICAL REGION TO PROTECT ACCESSES TO parmbuf[] AND _CIOBUF_ (see */
/* file header comment above for more about mutexes and data coherency). */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_HOST_CIO);
LOADSHORT(parmbuf,dev_fd,0);
LOAD32(parmbuf,offset,2);
LOADSHORT(parmbuf,origin,6);
__TI_writemsg(_DTLSEEK,parmbuf,NULL,0);
__TI_readmsg(parmbuf,NULL);
result = UNLOAD32(parmbuf,0);
__TI_data_synch_WBINV(&parmbuf, sizeof(parmbuf));
__TI_resource_unlock(__TI_LOCK_HOST_CIO);
return result;
}
_CODE_ACCESS int HOSTopen(const char *path, unsigned flags, int llv_fd)
{
int dev_fd;
/*-----------------------------------------------------------------------*/
/* CRITICAL REGION TO PROTECT ACCESSES TO parmbuf[] AND _CIOBUF_ (see */
/* file header comment above for more about mutexes and data coherency). */
/*-----------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_HOST_CIO);
LOADSHORT(parmbuf,llv_fd,0);
LOADSHORT(parmbuf,flags,2);
__TI_writemsg(_DTOPEN,parmbuf,(char *)path,strlen(path)+1);
/* SEND NULL ACROSS ALSO */
__TI_readmsg(parmbuf,NULL);
dev_fd = UNLOADSHORT(parmbuf,0);
__TI_data_synch_WBINV(&parmbuf, sizeof(parmbuf));
__TI_resource_unlock(__TI_LOCK_HOST_CIO);
return (dev_fd < 0) ? dev_fd : llv_fd;
}
_CODE_ACCESS int fputs(const char *_ptr, register FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
size_t num_left, ptr_strlen;
char *fpos = (char *)_ptr;
int room_left,
flush_flag = 0,
num_to_write;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* Make sure that the stream is writeable. */
/*------------------------------------------------------------------------*/
if (!__TI_wrt_ok(_fp))
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
room_left = (int)(_fp->bufend - _fp->pos);
ptr_strlen = num_left = strlen(_ptr);
/*------------------------------------------------------------------------*/
/* If the stream is non-buffered, call the lowlevel WRITE function. */
/*------------------------------------------------------------------------*/
if (_BUFFMODE(_fp) == _IONBF)
{
int num_written = 0;
while (num_left > 0)
{
int write_return = write(_fp->fd, _ptr + num_written, num_left);
if (write_return < 0)
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
else
{
num_written += write_return;
num_left -= write_return;
}
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return ptr_strlen;
}
/*------------------------------------------------------------------------*/
/* Write the string into the buffer, flushing it when full. */
/*------------------------------------------------------------------------*/
while (num_left > 0)
{
num_to_write = (num_left > room_left) ? room_left : num_left;
if ((_BUFFMODE(_fp) == _IOLBF) && memchr(fpos, '\n', num_to_write))
{
num_to_write = (char *)memchr(fpos, '\n', num_to_write) - fpos + 1;
flush_flag = 1;
}
memcpy(_fp->pos, fpos, num_to_write);
/*---------------------------------------------------------------------*/
/* Update pointers and counters. */
/*---------------------------------------------------------------------*/
_fp->pos += num_to_write;
fpos += num_to_write;
num_left -= num_to_write;
room_left -= num_to_write;
/*---------------------------------------------------------------------*/
/* If the buffer is full, flush it. Any I/O errors cause this */
/* function to exit, returning an EOF. */
/*---------------------------------------------------------------------*/
if (room_left == 0 || flush_flag)
{
if (__TI_doflush(_fp))
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
room_left = (int)(_fp->bufend - _fp->pos);
_SET(_fp, _MODEW);
flush_flag = 0;
}
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return ptr_strlen;
}
_CODE_ACCESS int fputc(int _c, register FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* Make sure that the stream is writeable. */
/*------------------------------------------------------------------------*/
if (!__TI_wrt_ok(_fp))
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return EOF;
}
/*------------------------------------------------------------------------*/
/* If the stream is non-buffered, call the lowlevel WRITE function. */
/*------------------------------------------------------------------------*/
if(_BUFFMODE(_fp) == _IONBF)
{
char cbuf = (char)_c;
if ((write(_fp->fd, &cbuf, 1)) == -1)
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
else
{
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return ((unsigned char)_c);
}
}
/*------------------------------------------------------------------------*/
/* Check for room in the buffer. If room, add the character. Must */
/* check before writing because C++ library fills the buffer to */
/* capacity, then calls fputc() from overflow() (CQXXXXX). */
/*------------------------------------------------------------------------*/
if ((_fp->pos >= _fp->bufend) && __TI_doflush(_fp))
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
*(_fp->pos++) = (unsigned char)_c;
/*------------------------------------------------------------------------*/
/* If a line-buffered stream reached a newline character, flush it. */
/*------------------------------------------------------------------------*/
if ((_STCHK(_fp, _IOLBF) && _c == '\n') && __TI_doflush(_fp))
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return ((unsigned char)_c);
}
_CODE_ACCESS size_t fread(void *_ptr, size_t _size, size_t _count, FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
unsigned char *fpos = (unsigned char *)_ptr;
size_t num_left = _size * _count,
num_read = 0,
num_to_read = 0;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* Make sure that the file is readable. */
/*------------------------------------------------------------------------*/
if (!__TI_rd_ok(_fp) || _size == 0 || _count == 0)
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (0);
}
/*------------------------------------------------------------------------*/
/* If the stream is non-buffered, call the lowlevel READ function. */
/*------------------------------------------------------------------------*/
if (_BUFFMODE(_fp) == _IONBF)
{
int num_read = 0;
while (num_left > 0)
{
int read_return;
if (_STCHK(_fp, _UNGETC))
{
*fpos = *(_fp->pos++);
_UNSET(_fp, _UNGETC);
read_return = 1;
}
else
read_return = (size_t)(read(_fp->fd,
(char *)fpos + num_read, num_left));
if (read_return < 0)
{
_SET(_fp, _STATERR);
break;
}
else if (read_return == 0)
{
_SET(_fp, _STATEOF);
break;
}
else
{
num_read += read_return;
num_left -= read_return;
}
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (num_read / _size);
}
while (num_left > 0)
{
/*---------------------------------------------------------------------*/
/* If the buffer has been completely read, fill it up. Exit the loop */
/* if an I/O error occurs, or the end of the file is reached. */
/*---------------------------------------------------------------------*/
if(_fp->pos == _fp->buff_stop) __TI_buff_read(_fp);
if(_STCHK(_fp, (_STATERR | _STATEOF))) break;
/*---------------------------------------------------------------------*/
/* Determine how many characters can fit in the buffer, and read them */
/* in. */
/*---------------------------------------------------------------------*/
num_to_read = (num_left < (_fp->buff_stop - _fp->pos)) ?
num_left : (_fp->buff_stop - _fp->pos);
memcpy(fpos, _fp->pos, num_to_read);
/*---------------------------------------------------------------------*/
/* Update pointers and counters. */
/*---------------------------------------------------------------------*/
fpos += num_to_read;
_fp->pos += num_to_read;
num_read += num_to_read;
num_left -= num_to_read;
}
/*------------------------------------------------------------------------*/
/* Clear the _UNGETC flag in the stream, and return the number of blocks */
/* read. */
/*------------------------------------------------------------------------*/
_UNSET(_fp, _UNGETC);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (num_read / _size);
}
_CODE_ACCESS int open(const char *path, unsigned flags, int mode)
{
static _DATA_ACCESS int stream_init = 0;
struct stream_info *ptr;
_DEVICE *dev;
int dev_fd;
int llv_fd;
/*-------------------------------------------------------------------------*/
/* CRITICAL REGION PROTECTS ACCESS TO _stream[] (see file header comment). */
/*-------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_STREAM_TBL);
/*-------------------------------------------------------------------------*/
/* INITIALIZE STREAM TABLE FIRST TIME AROUND */
/*-------------------------------------------------------------------------*/
if (!stream_init)
{
for (stream_init = 1, ptr = &_stream[3]; ptr != &_stream[_NSTREAM];
(ptr++)->dev = NULL);
__TI_data_synch_WBINV(&stream_init, sizeof(stream_init));
}
/*-------------------------------------------------------------------------*/
/* GET THE NEXT AVAILABLE FILE DESCRIPTOR - RETURN -1 IF NONE AVAILABLE */
/*-------------------------------------------------------------------------*/
for (ptr = &_stream[3]; ptr != &_stream[_NSTREAM] && ptr->dev; ++ptr);
if (ptr == &_stream[_NSTREAM])
{
__TI_data_synch_INV(&_stream, sizeof(_stream));
__TI_resource_unlock(__TI_LOCK_STREAM_TBL);
return -1;
}
llv_fd = ptr - &_stream[0];
/*------------------------------------------------------------------------*/
/* GET DEVICE AND PEFORM OPEN - SET STREAM TABLE ENTRY AND FLAGS */
/*------------------------------------------------------------------------*/
/* CRITICAL REGION PROTECTS _device[] ACCESS THAT OCCURS IN getdevice() */
/* (see file header comment for more on mutex and data coherence). */
/*------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_DEVICE_TBL);
dev = getdevice(&path);
dev_fd = (dev->flags & _BUSY) ? -1 : (*(dev->OPEN))(path,flags,llv_fd);
if (dev_fd < 0)
{
__TI_data_synch_INV(&_stream, sizeof(_stream));
__TI_data_synch_INV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
__TI_resource_unlock(__TI_LOCK_STREAM_TBL);
return dev_fd;
}
_stream[llv_fd].dev = dev;
_stream[llv_fd].dfd = dev_fd;
if (!(dev->flags & _MSA)) dev->flags |= _BUSY;
__TI_data_synch_WBINV(&_stream, sizeof(_stream));
__TI_data_synch_WBINV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
__TI_resource_unlock(__TI_LOCK_STREAM_TBL);
return llv_fd;
}
_CODE_ACCESS
int add_device(char *name,
unsigned flags,
int (*dopen) (const char *path, unsigned flags, int llv_fd),
int (*dclose) (int dev_fd),
int (*dread) (int dev_fd, char *buf, unsigned count),
int (*dwrite) (int dev_fd, const char *buf, unsigned count),
off_t (*dlseek) (int dev_fd, off_t offset, int origin),
int (*dunlink)(const char *path),
int (*drename)(const char *old_name, const char *new_name))
{
static _DATA_ACCESS int device_init = 0;
_DEVICE *dt;
/*-------------------------------------------------------------------------*/
/* CRITICAL REGION PROTECTS ACCESS TO _device[] */
/*-------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_DEVICE_TBL);
/*-------------------------------------------------------------------------*/
/* INITIALIZE DEVICE TABLE FIRST TIME AROUND */
/*-------------------------------------------------------------------------*/
if (!device_init)
{
for (device_init = 1, dt = &_device[1]; dt != &_device[_NDEVICE];
*(dt++)->name = '\0');
__TI_data_synch_WBINV(&device_init, sizeof(device_init));
}
/*-------------------------------------------------------------------------*/
/* IF DEVICE WITH SPECIFIED 'name' ALREADY EXISTS IN _device[], THEN WE */
/* CAN'T ADD A NEW ONE WITH THE SAME NAME (note that the function pointers */
/* associated with the existing device are not updated). */
/*-------------------------------------------------------------------------*/
if (finddevice(name))
{
__TI_data_synch_INV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
return 1;
}
/*-------------------------------------------------------------------------*/
/* SEARCH THE DEVICE TABLE FOR AN EMPTY SLOT, RETURN -1 IF NONE FOUND */
/*-------------------------------------------------------------------------*/
for (dt = &_device[1]; dt != _device+_NDEVICE && dt->name[0] != '\0'; ++dt);
if (dt == &_device[_NDEVICE])
{
__TI_data_synch_INV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
return -1;
}
strncpy(dt->name,name,8);
dt->name[8] = '\0';
dt->flags = flags;
dt->OPEN = dopen;
dt->CLOSE = dclose;
dt->READ = dread;
dt->WRITE = dwrite;
dt->LSEEK = dlseek;
dt->UNLINK = dunlink;
dt->RENAME = drename;
__TI_data_synch_WBINV(&_device, sizeof(_device));
__TI_resource_unlock(__TI_LOCK_DEVICE_TBL);
return 0;
}
static FILE *_openfile(const char *_fname, register FILE *_fp, const char
*_mode)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
int wr,
bin = 0,
plus = 0;
unsigned lflags = 0;
if (!_fp) return (NULL);
/*------------------------------------------------------------------------*/
/* SETUP _CLEANUP_PTR SO THAT ALL OPENED FILES WILL BE CLOSED AT EXIT. */
/*------------------------------------------------------------------------*/
/* _cleanup_ptr is considered a shared resource for multi-threaded */
/* applications. Access to it is also protected by the __TI_LOCK_FILE_TBL */
/* mutex which encloses each call to _openfile. The local copy of */
/* _cleanup_ptr is flushed to shared memory as soon as it is updated. */
/*------------------------------------------------------------------------*/
_cleanup_ptr = _cleanup;
__TI_data_synch_WBINV(&_cleanup_ptr, sizeof(_cleanup_ptr));
/*------------------------------------------------------------------------*/
/* Set the flags in the stream to reflect to I/O mode of the stream to be */
/* opened. */
/*------------------------------------------------------------------------*/
wr = _mode[0];
if (_mode[1])
{
bin = ((_mode[1] == 'b') || (_mode[2] == 'b'));
plus = ((_mode[1] == '+') || (_mode[2] == '+'));
}
_fp->flags = 0;
if (!plus)
_SET(_fp, (wr == 'r') ? _MODER :
(wr == 'w' || wr == 'a') ? _MODEW : 0);
_SET(_fp, (wr == 'a') ? _MODEA : 0);
_SET(_fp, (bin) ? _MODEBIN : 0);
_SET(_fp, (plus) ? _MODERW : 0);
if (bin) lflags |= (O_BINARY);
/*------------------------------------------------------------------------*/
/* Set the flags in LFLAGS to reflect the flags that will be necessary to */
/* call the lowlevel OPEN function properly for this stream. */
/*------------------------------------------------------------------------*/
switch (wr)
{
case 'r' : lflags |= (plus) ? O_RDWR : O_RDONLY;
break;
case 'a' : lflags |= (plus) ? O_RDWR : O_WRONLY;
lflags |= (O_APPEND | O_CREAT);
break;
case 'w' : lflags |= (plus) ? O_RDWR : O_WRONLY;
lflags |= (O_TRUNC | O_CREAT);
break;
}
/*------------------------------------------------------------------------*/
/* Call the lowlevel OPEN function, and store the returned file */
/* descriptor into the stream. If the OPEN function fails, return NULL. */
/*------------------------------------------------------------------------*/
if ((_fp->fd = open(_fname, lflags, 0666)) < 0) return (NULL);
/*------------------------------------------------------------------------*/
/* Workaround for defect SDSCM00030215. */
/* Use of ftell and fseek on opened DOS formatted files is not supported */
/* in text mode, with buffered I/O. The run-time library code will */
/* adjust the return value from the host ftell call. This adjustment is */
/* not in-sync with an MS C runtime ftell value in the interpretation of */
/* carriage-return/line feed pairs. Use of ftell/fseek on DOS formatted */
/* files requires one of the following changes: */
/* 1. Rebuild the rts library with the following macro, */
/* _TI_FORCE_UNBUFFERED_TEXT_IO, defined. This will prevent any rts */
/* adjustment of ftell values. */
/* 2. Open the DOS file in binary mode. */
/* 3. Use one of many DOS-to-Unix file converters to strip */
/* carriage-returns from the input file. */
/*------------------------------------------------------------------------*/
#ifdef _TI_FORCE_UNBUFFERED_TEXT_IO
if ((wr == 'r') && (!bin))
setbuf(_fp, 0);
#endif
return (_fp);
}
_CODE_ACCESS size_t fwrite(const void *_ptr, size_t _size, size_t _count,
register FILE *_fp)
{
/*------------------------------------------------------------------------*/
/* Local variables */
/*------------------------------------------------------------------------*/
unsigned char *fpos = (unsigned char *)_ptr;
unsigned char *nl_pos;
size_t buffer_size,
next_nl,
room_left;
size_t num_left = _size * _count,
num_to_write,
num_written = 0;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* Make sure that the stream is writeable. */
/*------------------------------------------------------------------------*/
buffer_size = (_fp->bufend - _fp->buf);
if (!__TI_wrt_ok(_fp) || _size == 0 || _count == 0)
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (0);
}
/*------------------------------------------------------------------------*/
/* If the stream is non-buffered, call the lowlevel WRITE function. */
/*------------------------------------------------------------------------*/
if(_BUFFMODE(_fp) == _IONBF)
{
int num_written = 0;
while (num_left > 0)
{
int write_return = write(_fp->fd,
(char *)fpos + num_written, num_left);
if (write_return <= 0)
{
_SET(_fp, _STATERR);
break;
}
else
{
num_written += write_return;
num_left -= write_return;
}
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (num_written / _size);
}
room_left = (_fp->bufend - _fp->pos);
if (_STCHK(_fp, _IOLBF))
next_nl = (char *)memchr(fpos, '\n', num_left) - (char *)fpos + 1;
while (num_left > 0)
{
/*---------------------------------------------------------------------*/
/* Determine how many characters should be written based on buffering */
/* mode. For non-buffered streams, call the lowlevel WRITE function. */
/* For fully buffered streams, put as many characters in the buffer as */
/* possible. For line buffered streams, put characters into the */
/* util the buffer is full, the last character is reached, or a */
/* newline character is reached. */
/*---------------------------------------------------------------------*/
switch (_BUFFMODE(_fp))
{
case _IOFBF : num_to_write = (room_left > num_left) ?
num_left : room_left;
break;
case _IOLBF : num_to_write = (room_left > next_nl) ? next_nl :
(room_left > num_left) ? num_left : room_left;
break;
/*------------------------------------------------------------------*/
/* The only other available _BUFFMODE for _fp is _IONBF which has */
/* already been accounted for above. We should never get here. */
/*------------------------------------------------------------------*/
default : return (0);
}
/*---------------------------------------------------------------------*/
/* Write the data to the buffer, and update the buffer pointer and the */
/* ROOM_LEFT coutner. */
/*---------------------------------------------------------------------*/
memcpy(_fp->pos, fpos, num_to_write);
_fp->pos += num_to_write;
room_left = (_fp->bufend - _fp->pos);
/*---------------------------------------------------------------------*/
/* If the buffer is full, or a newline character has been encountered */
/* on a line-buffered stream, flush it. */
/*---------------------------------------------------------------------*/
if (room_left == 0 || (_STCHK(_fp, _IOLBF) && num_to_write == next_nl))
{
if (__TI_doflush(_fp))
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (num_written / _size);
}
room_left = buffer_size;
/*------------------------------------------------------------------*/
/* The _DOFLUSH function clears the write flag on streams opened in */
/* update mode. Make sure that the write flag is still set here. */
/*------------------------------------------------------------------*/
_SET(_fp, _MODEW);
}
/*---------------------------------------------------------------------*/
/* Update pointers and counters. */
/*---------------------------------------------------------------------*/
num_written += num_to_write;
fpos += num_to_write;
num_left -= num_to_write;
/*---------------------------------------------------------------------*/
/* For line-buffered streams, find the next occurance of a newline */
/* character. If there are no more, and the remaining data will fit */
/* in the buffer, exit the loop where the remaining data will be moved */
/* there. Otherwise loop until this condition is true. */
/*---------------------------------------------------------------------*/
if (_STCHK(_fp, _IOLBF))
{
nl_pos = (unsigned char *)memchr((fpos + 1), '\n',
(num_left > 0) ? (num_left-1) : 0);
if (! nl_pos)
{
if (num_left < room_left) break;
else next_nl = buffer_size + 1;
}
else next_nl = (nl_pos - fpos) + 1;
}
}
/*------------------------------------------------------------------------*/
/* Copy the rest of the characters into the buffer for line-buffered */
/* streams. */
/*------------------------------------------------------------------------*/
if (_STCHK(_fp, _IOLBF))
{
memcpy(_fp->pos, fpos, num_left);
num_written += num_left;
_fp->pos += num_left;
}
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (num_written / _size);
}
_CODE_ACCESS int fgetc(register FILE *_fp)
{
int retval = EOF;
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to __TI_LOCK_FILE_TBL shared resources (_ftable[], _ft_end, and */
/* _tmpnams[]). In this case, _ftable[] may be updated, so we must ensure */
/* that the local copy of _ftable[] is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_FILE_TBL);
/*------------------------------------------------------------------------*/
/* Make sure that it is OK to read from this stream. */
/*------------------------------------------------------------------------*/
if (!_rd_ok(_fp)) goto fgetc_exit;
/*------------------------------------------------------------------------*/
/* For non-buffered streams, call the lowlevel READ function. */
/*------------------------------------------------------------------------*/
if (_BUFFMODE(_fp) == _IONBF)
{
int errchk;
char result;
if (_STCHK(_fp, _UNGETC))
{
_UNSET(_fp, _UNGETC);
retval = (int)*(_fp->pos++);
goto fgetc_exit;
}
errchk = read(_fp->fd, &result, 1);
if (errchk <= 0)
{
_SET(_fp, (errchk == 0) ? _STATEOF : _STATERR);
goto fgetc_exit;
}
retval = (int)result;
goto fgetc_exit;
}
/*------------------------------------------------------------------------*/
/* If the buffer has been entirely read, or is empty, call _BUFF_READ to */
/* fill the buffer. */
/*------------------------------------------------------------------------*/
if (_fp->pos == _fp->buff_stop) _buff_read(_fp);
/*------------------------------------------------------------------------*/
/* If the buffer read was unsuccessful, return an EOF. Otherwise, clear */
/* the _UNGETC flag in the stream, and return the next character. */
/*------------------------------------------------------------------------*/
if (_STCHK(_fp, (_STATERR | _STATEOF))) goto fgetc_exit;
_UNSET(_fp, _UNGETC);
retval = *(_fp->pos++);
fgetc_exit:
__TI_data_synch_WBINV(&_ftable, sizeof(_ftable));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
return (retval);
}
_CODE_ACCESS int setvbuf(register FILE *_fp, register char *_buf,
register int _type, register size_t _size)
{
/*------------------------------------------------------------------------*/
/* The current thread in a multi-threaded application must protect access */
/* to the file stream. In this case, _fp may be updated, so we must */
/* ensure that the local copy of _fp is flushed to shared memory before */
/* leaving the critical section (invalidated if it is not modified). */
/*------------------------------------------------------------------------*/
__TI_file_lock(_fp);
/*------------------------------------------------------------------------*/
/* If the current stream is not associated with a file, return an error. */
/*------------------------------------------------------------------------*/
if (_fp->fd == -1 || (_type != _IONBF && _size <= 0))
{
__TI_data_synch_INV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
/*------------------------------------------------------------------------*/
/* If a buffer already exists, free it if it was malloc'd, and reset all */
/* of the stream's buffer pointers. */
/*------------------------------------------------------------------------*/
if (_fp->buf)
{
if(_STCHK(_fp, _BUFFALOC)) free((_fp->buf)-1);
_UNSET(_fp, _BUFFALOC);
_fp->buf = NULL;
_fp->pos = NULL;
_fp->bufend = NULL;
_fp->buff_stop = NULL;
}
/*------------------------------------------------------------------------*/
/* If NULL was used for the buffering mode, default to fully-buffered. */
/*------------------------------------------------------------------------*/
if (!_type) _type = _IOFBF;
/*------------------------------------------------------------------------*/
/* Clear any previous buffering flags, and set the new one. */
/*------------------------------------------------------------------------*/
_UNSET(_fp, (_IOLBF | _IOFBF | _IONBF));
_SET(_fp, _type);
/*------------------------------------------------------------------------*/
/* If a buffer was provided, but its size is only one byte, allocate a */
/* different one. Also, do not allow a buffer size greater than BUFSIZ. */
/* The buffer will always have one space at the beginning that is */
/* for UNGETC, in the event that an UNGETC is performed on an empty file, */
/* or when the buffer is full, but unread. */
/*------------------------------------------------------------------------*/
if (_size == 1) _buf = NULL;
if (_size > BUFSIZ) _size = BUFSIZ;
if (_buf) _fp->buf = (unsigned char*)_buf+1;
else
{
/*---------------------------------------------------------------------*/
/* If allocating a buffer, provide _size bytes of usable space by */
/* incrementing _size, unless it is greater than BUFSIZ. */
/*---------------------------------------------------------------------*/
if (_size <= BUFSIZ) _size++;
if (! (_fp->buf = (unsigned char*)malloc(_size)))
{
_SET(_fp, _STATERR);
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
return (EOF);
}
_fp->buf++;
_SET(_fp, _BUFFALOC);
}
_fp->pos = _fp->buff_stop = _fp->buf;
_fp->bufend = _fp->buf + _size -1;
__TI_data_synch_WBINV(_fp, sizeof(FILE));
__TI_file_unlock(_fp);
/*------------------------------------------------------------------------*/
/* SETUP _CLEANUP_PTR SO ALL BUFFERS WILL BE FLUSHED AT EXIT. */
/*------------------------------------------------------------------------*/
/* __TI_cleanup_ptr is also a shared resource in multi-threaded */
/* applications, so accesses to it are also protected by the */
/* __TI_LOCK_FILE_TBL mutex. The current thread will also invalidate any */
/* local copy of __TI_cleanup_ptr in the data cache of the core that it */
/* is running on before leaving the critical section. */
/*------------------------------------------------------------------------*/
__TI_resource_lock(__TI_LOCK_FILE_TBL);
__TI_cleanup_ptr = __TI_cleanup;
__TI_data_synch_WBINV(&__TI_cleanup_ptr, sizeof(__TI_cleanup_ptr));
__TI_resource_unlock(__TI_LOCK_FILE_TBL);
return (0);
}
