quick_exit
From cppreference.com
Defined in header <stdlib.h>
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_Noreturn void quick_exit( int exit_code ); |
(since C11) (until C23) |
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[[noreturn]] void quick_exit( int exit_code ); |
(since C23) | |
Causes normal program termination to occur without completely cleaning the resources.
Functions passed to at_quick_exit are called in reverse order of their registration. After calling the registered functions, calls _Exit(exit_code).
Functions passed to atexit or signal handlers passed to signal are not called.
Parameters
exit_code | - | exit status of the program |
Return value
(none)
Example
Run this code
#include <stdlib.h> #include <stdio.h> void f1(void) { puts("pushed first"); fflush(stdout); } void f2(void) { puts("pushed second"); } void f3(void) { puts("won't be called"); } int main(void) { at_quick_exit(f1); at_quick_exit(f2); atexit(f3); quick_exit(0); }
Output:
pushed second pushed first
References
- C17 standard (ISO/IEC 9899:2018):
- 7.22.4.7 The quick_exit function (p: 257)
- C11 standard (ISO/IEC 9899:2011):
- 7.22.4.7 The quick_exit function (p: 353)
See also
causes abnormal 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) |