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endurox:v7.5.x:api:xatmi:ndrx_atfork_prepare.3
Name
ndrx_atfork_prepare — Function to be called before fork, if not using ndrx_fork(3)
Synopsis
#include <atmi.h>
void ndrx_atfork_prepare(void);
For XATMI client link with -latmiclt -latmi -lubf -lnstd -lpthread -lrt -lm
For XATMI server link with -latmisrv|-latmisrvnomain|-latmisrvinteg -latmi -lubf -lnstd -lpthread -lrt -lm
DESCRIPTION
When process is about to copy it self (i.e. perform forking in UNIX terms), Enduro/X requires certain tasks to be performed before this action. Particularly, if System V IPC transport is used by Enduro/X, then auxiliary threads shall be terminated and contexts released. Thus if doing manual fork(), then before this call, parent shall call ndrx_atfork_prepare() procedure. Procedure can be registered with pthread_atfork(), passing it to prepare argument.
At given time function does some logic by System V IPC, for other IPC no logic is executed. But this fact is subject of change, and in future releases some other tasks might be required to be one by Enduro/X before process forking, thus it is recommended to use ndrx_fork(), call manually ndrx_atfork_prepare() or register it with pthread_atfork()