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| 2cf6fecc C |
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| 4 | SIGPAUSE(2) UNIX Programmer's Manual SIGPAUSE(2) | |
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| 8 | N\bNA\bAM\bME\bE | |
| 9 | sigpause - atomically release blocked signals and wait for | |
| 10 | interrupt | |
| 11 | ||
| 12 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
| 13 | s\bsi\big\bgp\bpa\bau\bus\bse\be(\b(s\bsi\big\bgm\bma\bas\bsk\bk)\b) | |
| 14 | i\bin\bnt\bt s\bsi\big\bgm\bma\bas\bsk\bk;\b; | |
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| 16 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
| 17 | _\bS_\bi_\bg_\bp_\ba_\bu_\bs_\be assigns _\bs_\bi_\bg_\bm_\ba_\bs_\bk to the set of masked signals and | |
| 18 | then waits for a signal to arrive; on return the set of | |
| 19 | masked signals is restored. _\bS_\bi_\bg_\bm_\ba_\bs_\bk is usually 0 to indi- | |
| 20 | cate that no signals are now to be blocked. _\bS_\bi_\bg_\bp_\ba_\bu_\bs_\be always | |
| 21 | terminates by being interrupted, returning -1 with _\be_\br_\br_\bn_\bo set | |
| 22 | to EINTR. | |
| 23 | ||
| 24 | In normal usage, a signal is blocked using _\bs_\bi_\bg_\bb_\bl_\bo_\bc_\bk(2), to | |
| 25 | begin a critical section, variables modified on the | |
| 26 | occurrence of the signal are examined to determine that | |
| 27 | there is no work to be done, and the process pauses awaiting | |
| 28 | work by using _\bs_\bi_\bg_\bp_\ba_\bu_\bs_\be with the mask returned by _\bs_\bi_\bg_\bb_\bl_\bo_\bc_\bk. | |
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| 30 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO | |
| 31 | sigblock(2), sigvec(2) | |
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| 63 | Printed 7/9/88 May 15, 1986 1 | |
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