Semiconductor & Computer Engineering
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<signal.h> Header - C
The <signal.h> header is part of the standard library of the C programming language which provides the functionality necessary for dealing with various signals.
Types[edit]
| Type | Description | Since |
|---|---|---|
| sig_atomic_t | Integer type of an object that can be accessed as an atomic entity | C89 |
Macros[edit]
The header provides the following macro definitions:
| Macro Name | Description | Since |
|---|---|---|
| SIG_DFL | macros expand into integral expressions that compare unequal to the address of any declarable function | C89 |
| SIG_ERR | C89 | |
| SIG_IGN | C89 | |
| SIGABRT | expand to positive integer constant expressions with type int; corresponding to an abnormal termination | C89 |
| SIGFPE | expand to positive integer constant expressions with type int; corresponding to an erroneous arithmetic operation | C89 |
| SIGILL | expand to positive integer constant expressions with type int; corresponding to a detection of an invalid function image | C89 |
| SIGINT | expand to positive integer constant expressions with type int; corresponding to a receipt of an interactive attention signal | C89 |
| SIGSEGV | expand to positive integer constant expressions with type int; corresponding to an invalid access to storage | C89 |
| SIGTERM | expand to positive integer constant expressions with type int; corresponding to a termination request sent to the program | C89 |
Functions[edit]
| Function | Description | Since |
|---|---|---|
| signal | sets up a signal handler for specific signal | C89 |
| raise | carries out the action defined by signal() | C89 |