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<title>rpm: Signal Queue API.</title>
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rpm
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4.14.2
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/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
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/* @license-end */</script>
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Macros |
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Typedefs |
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Functions
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Signal Queue API.
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Signal Queue API.
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More...
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Macros
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#define RPMSQ_DFL ((rpmsqAction_t)0)
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SIG_DFL, SIG_IGN and SIG_ERR counterparts. More...
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Typedefs
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typedef void(* rpmsqAction_t) (int signum, siginfo_t *info, void *context)
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Default signal handler prototype. More...
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Functions
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int rpmsqIsCaught (int signum)
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Test if given signal has been caught (while signals blocked). More...
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int rpmsqActivate (int state)
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Activate (or disable) the signal queue. More...
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rpmsqAction_t rpmsqSetAction (int signum, rpmsqAction_t handler)
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Set or delete a signal handler for a signal. More...
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int rpmsqBlock (int op)
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Block or unblock (almost) all signals. More...
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int rpmsqPoll (void)
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Poll for caught signals, executing their handlers. More...
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Detailed Description
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Signal Queue API.
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Macro Definition Documentation
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◆ RPMSQ_DFL
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#define RPMSQ_DFL ((rpmsqAction_t)0)
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SIG_DFL, SIG_IGN and SIG_ERR counterparts.
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Definition at line 27 of file rpmsq.h.
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Typedef Documentation
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◆ rpmsqAction_t
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typedef void(* rpmsqAction_t) (int signum, siginfo_t *info, void *context)
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Default signal handler prototype.
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- Parameters
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signumsignal number
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info(siginfo_t) signal info
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contextsignal context
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Definition at line 22 of file rpmsq.h.
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Function Documentation
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◆ rpmsqActivate()
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int rpmsqActivate
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(
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int
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state)
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Activate (or disable) the signal queue.
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- Parameters
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state1 to enable, 0 to disable
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- Returns
- 0 on success, negative on error
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◆ rpmsqBlock()
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int rpmsqBlock
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(
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int
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op)
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Block or unblock (almost) all signals.
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The operation is "reference counted" so the calls can be nested, and signals are only unblocked when the reference count falls to zero. - Parameters
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opSIG_BLOCK/SIG_UNBLOCK
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- Returns
- 0 on success, -1 on error
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◆ rpmsqIsCaught()
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int rpmsqIsCaught
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(
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int
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signum)
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Test if given signal has been caught (while signals blocked).
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Similar to sigismember() but operates on internal signal queue. - Parameters
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signumsignal to test for
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- Returns
- 1 if caught, 0 if not and -1 on error
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◆ rpmsqPoll()
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int rpmsqPoll
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void
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Poll for caught signals, executing their handlers.
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- Returns
- no. active signals found
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◆ rpmsqSetAction()
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rpmsqAction_t rpmsqSetAction
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(
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int
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signum,
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rpmsqAction_t
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handler
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)
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Set or delete a signal handler for a signal.
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- Parameters
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signumsignal number
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handlersignal handler or NULL to delete
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- Returns
- previous handler, RPMSQ_ERR on error
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<address class="footer"><small>
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Generated by
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1.8.14
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</small></address>
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