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Programming
How to make a C code reentrant?
Post 8182 by jyotipg on Monday 8th of October 2001 05:05:00 AM
10-08-2001
Neelam,
I suggest that to be on the safer side on a networking environment, only use those system calls that are reentrant as specified by Posix. Before using any System Canl, just refer the manual on the machine to find if it adheres to those standards.
And unluckily if u have to use a Call that is non- reentrant.. i.e mainly the Blocking or Slow system call, then better check the return values of the call while calling them and if its a failure then better restart the System Call to proceed ahead or your system can behave in really amazing ways.
Good Luck..
I suggest that to be on the safer side on a networking environment, only use those system calls that are reentrant as specified by Posix. Before using any System Canl, just refer the manual on the machine to find if it adheres to those standards.
And unluckily if u have to use a Call that is non- reentrant.. i.e mainly the Blocking or Slow system call, then better check the return values of the call while calling them and if its a failure then better restart the System Call to proceed ahead or your system can behave in really amazing ways.
Good Luck..
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LEARN ABOUT REDHAT
execute
EXECUTE(7) SQL Commands EXECUTE(7) NAME
EXECUTE - execute a prepared query SYNOPSIS
EXECUTE plan_name [ (parameter [, ...] ) ] INPUTS plan_name The name of the prepared query to execute. parameter The actual value of a parameter to the prepared query. This must be an expression yielding a value of a type compatible with the data-type specified for this parameter position in the PREPARE statement that created the prepared query. DESCRIPTION
EXECUTE is used to execute a previously prepared query. Since prepared queries only exist for the duration of a session, the prepared query must have been created by a PREPARE statement executed earlier in the current session. If the PREPARE statement that created the query specified some parameters, a compatible set of parameters must be passed to the EXECUTE statement, or else an error is raised. Note that (unlike functions) prepared queries are not overloaded based on the type or number of their parameters: the name of a prepared query must be unique within a database session. For more information on the creation and usage of prepared queries, see PREPARE [prepare(7)]. COMPATIBILITY
SQL92 SQL92 includes an EXECUTE statement, but it is only for use in embedded SQL clients. The EXECUTE statement implemented by PostgreSQL also uses a somewhat different syntax. SQL - Language Statements 2002-11-22 EXECUTE(7)