diff options
Diffstat (limited to 'OLD/csci4061/110920_breakout/chap8')
-rw-r--r-- | OLD/csci4061/110920_breakout/chap8/Makefile | 12 | ||||
-rw-r--r-- | OLD/csci4061/110920_breakout/chap8/pgm_8_1.c | 42 | ||||
-rw-r--r-- | OLD/csci4061/110920_breakout/chap8/pgm_8_5.c | 43 |
3 files changed, 0 insertions, 97 deletions
diff --git a/OLD/csci4061/110920_breakout/chap8/Makefile b/OLD/csci4061/110920_breakout/chap8/Makefile deleted file mode 100644 index bd92bec..0000000 --- a/OLD/csci4061/110920_breakout/chap8/Makefile +++ /dev/null @@ -1,12 +0,0 @@ -pgm81: pgm_8_1.c - gcc pgm_8_1.c -lm -o out - ./out 5 - -pgm85: pgm_8_5.c - gcc pgm_8_5.c -lm -o out - ./out - -.PHONY: clean - -clean: - rm out 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; -}
\ No newline at end of file diff --git a/OLD/csci4061/110920_breakout/chap8/pgm_8_5.c b/OLD/csci4061/110920_breakout/chap8/pgm_8_5.c deleted file mode 100644 index b20cdfa..0000000 --- a/OLD/csci4061/110920_breakout/chap8/pgm_8_5.c +++ /dev/null @@ -1,43 +0,0 @@ -// Program 8.5 - -#include <math.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> - -static volatile sig_atomic_t doneflag = 0; - -/* ARGSUSED */ -static void setdoneflag(int signo) { - doneflag = 1; -} - -int main (void) { - struct sigaction act; - int count = 0; - double sum = 0; - double x; - - act.sa_handler = setdoneflag; /* set up signal handler */ - act.sa_flags = 0; - if ((sigemptyset(&act.sa_mask) == -1) || - (sigaction(SIGINT, &act, NULL) == -1)) { - perror("Failed to set SIGINT handler"); - return 1; - } - - while (!doneflag) { - x = (rand() + 0.5)/(RAND_MAX + 1.0); - sum += sin(x); - count++; - printf("Count is %d and average is %f\n", count, sum/count); - sleep(3); - } - - printf("Program terminating ...\n"); - if (count == 0) - printf("No values calculated yet\n"); - else - printf("Count is %d and average is %f\n", count, sum/count); - return 0; -}
\ No newline at end of file |