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author | Matt Strapp <matt@mattstrapp.net> | 2022-05-24 11:18:46 -0500 |
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committer | Matt Strapp <matt@mattstrapp.net> | 2022-05-24 11:19:55 -0500 |
commit | 7a73162607544204032aa66cce755daf21edebda (patch) | |
tree | 58578e01f15f34a855d99c32898db9d7a1603e67 /OLD/csci4061/110920_breakout/chap8/pgm_8_1.c | |
parent | do some stuff (diff) | |
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Graduate
Signed-off-by: Matt Strapp <matt@mattstrapp.net>
Diffstat (limited to 'OLD/csci4061/110920_breakout/chap8/pgm_8_1.c')
-rw-r--r-- | OLD/csci4061/110920_breakout/chap8/pgm_8_1.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/OLD/csci4061/110920_breakout/chap8/pgm_8_1.c b/OLD/csci4061/110920_breakout/chap8/pgm_8_1.c deleted file mode 100644 index a979bb6..0000000 --- a/OLD/csci4061/110920_breakout/chap8/pgm_8_1.c +++ /dev/null @@ -1,42 +0,0 @@ -// Program 8.1 - -#include <math.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> - -int main(int argc, char *argv[]) { - int i; - sigset_t intmask; - int repeatfactor; - double y = 0.0; - - if (argc != 2) { - fprintf(stderr, "Usage: %s repeatfactor\n", argv[0]); - return 1; - } - repeatfactor = atoi(argv[1]); - if ((sigemptyset(&intmask) == -1) || (sigaddset(&intmask, SIGINT) == -1)){ - perror("Failed to initialize the signal mask"); - return 1; - } - for ( ; ; ) { - if (sigprocmask(SIG_BLOCK, &intmask, NULL) == -1) - break; - fprintf(stderr, "SIGINT signal blocked\n"); - for (i = 0; i < repeatfactor; i++) - y += sin((double)i); - fprintf(stderr, "Blocked calculation is finished, y = %f\n", y); - sleep(3); - if (sigprocmask(SIG_UNBLOCK, &intmask, NULL) == -1) - break; - fprintf(stderr, "SIGINT signal unblocked\n"); - for (i = 0; i < repeatfactor; i++) - y += sin((double)i); - fprintf(stderr, "Unblocked calculation is finished, y=%f\n", y); - sleep(3); - } - perror("Failed to change signal mask"); - return 1; -}
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