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Top Forums Programming read, write & STDOUT_FILENO.... Post 24512 by Perderabo on Friday 12th of July 2002 09:26:31 PM
Old 07-12-2002
mpid is an integer, but when you send it though printf with the format you are using, it gets converted into a string of ascii characters. This string can be be displayed. In the second case you are sending the integer directly to stdout. If integers are 32 bits on your system once in a while it may be 3 printable characters followed by a null byte and thus look like a string. But most of the time it will be unprintable.
 

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tis_write_lock(3)					     Library Functions Manual						 tis_write_lock(3)

NAME
tis_write_lock - Acquires the specified read-write lock for write access. LIBRARY
Standard C Library (libc.so, libc.a) SYNOPSIS
#include <tis.h> int tis_write_lock( tis_rwlock_t *lock); STANDARDS
None PARAMETERS
Address of the read-write lock to be acquired for write access. DESCRIPTION
This routine acquires a read-write lock for write access. This routine waits for any other active locks (for either read or write access) to be unlocked before this acquisition request is granted. This routine returns when the specified read-write lock is acquired for write access. RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The value specified by lock is not a valid read-write lock. ERRORS
None RELATED INFORMATION
Functions: tis_read_lock(3), tis_read_trylock(3), tis_read_unlock(3), tis_rwlock_destroy(3), tis_rwlock_init(3), tis_write_trylock(3), tis_write_unlock(3) Manuals: Guide to DECthreads and Programmer's Guide delim off tis_write_lock(3)
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