Program support utilities

< c
 
C
 
Program support utilities
Program termination
Communicating with the environment
Signals
Signal types
Non-local jumps
Types
 

Program termination

The following functions manage program termination and resource cleanup.

Defined in header <stdlib.h>
causes abnormal program termination (without cleaning up)
(function)
causes normal program termination with cleaning up
(function)
(C11)
 causes normal program termination without completely cleaning up
(function)
(C99)
 causes normal program termination without cleaning up
(function)
registers a function to be called on exit() invocation
(function)
(C11)
 registers a function to be called on quick_exit invocation
(function)
indicates program execution execution status
(macro constant)

Communicating with the environment

 calls the host environment's command processor
(function)
(C11)
 access to the list of environment variables
(function)

Signals

Several functions and macro constants for signal management are provided.

Defined in header <signal.h>
sets a signal handler for particular signal
(function)
runs the signal handler for particular signal
(function)
the integer type that can be accessed as an atomic entity from an asynchronous signal handler
(typedef)
defines signal handling strategies
(macro constant)
error was encountered
(macro constant)
Signal types
defines signal types
(macro constant)

Non-local jumps

Defined in header <setjmp.h>
saves the context
(function macro)
jumps to specified location
(function)
Types
execution context type
(typedef)

References

  • C11 standard (ISO/IEC 9899:2011):
  • 7.13 Nonlocal jumps <setjmp.h> (p: 262-264)
  • 7.14 Signal handling <signal.h> (p: 265-267)
  • 7.22 General utilities <stdlib.h> (p: 340-360)
  • 7.31.7 Signal handling <signal.h> (p: 455)
  • 7.31.12 General utilities <stdlib.h> (p: 456)
  • C99 standard (ISO/IEC 9899:1999):
  • 7.13 Nonlocal jumps <setjmp.h> (p: 243-245)
  • 7.14 Signal handling <signal.h> (p: 246-248)
  • 7.20 General utilities <stdlib.h> (p: 306-324)
  • 7.26.6 Signal handling <signal.h> (p: 401)
  • 7.26.10 General utilities <stdlib.h> (p: 402)
  • C89/C90 standard (ISO/IEC 9899:1990):
  • 4.6 NON-LOCAL JUMPS <setjmp.h>
  • 4.7 SIGNAL HANDLING <signal.h>
  • 4.10 GENERAL UTILITIES <stdlib.h>
  • 4.13.5 Signal handling <signal.h>
  • 7.13.7 General utilities <stdlib.h>

See also