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Fix Solaris stdio signal handling stupidities
This uses sigaction() to install the SIGALRM handler with SA_RESTART, so that Solaris stdio doesn't break completely when a signal interrupts a read. Thanks to Jason Riedy for confirming the silly Solaris signal behaviour. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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473d404b53
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@ -53,7 +53,7 @@ static int nr_objects = 0, nr_alloc = 0;
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static const char *base_name;
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static unsigned char pack_file_sha1[20];
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static int progress = 1;
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static volatile int progress_update = 0;
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static volatile sig_atomic_t progress_update = 0;
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/*
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* The object names in objects array are hashed with this hashtable,
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@ -685,7 +685,6 @@ static int try_delta(struct unpacked *cur, struct unpacked *old, unsigned max_de
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static void progress_interval(int signum)
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{
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signal(SIGALRM, progress_interval);
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progress_update = 1;
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}
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@ -820,6 +819,23 @@ static int reuse_cached_pack(unsigned char *sha1, int pack_to_stdout)
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return 1;
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}
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static void setup_progress_signal(void)
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{
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struct sigaction sa;
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struct itimerval v;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = progress_interval;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART;
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sigaction(SIGALRM, &sa, NULL);
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v.it_interval.tv_sec = 1;
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v.it_interval.tv_usec = 0;
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v.it_value = v.it_interval;
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setitimer(ITIMER_REAL, &v, NULL);
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}
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int main(int argc, char **argv)
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{
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SHA_CTX ctx;
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@ -885,13 +901,8 @@ int main(int argc, char **argv)
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prepare_packed_git();
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if (progress) {
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struct itimerval v;
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v.it_interval.tv_sec = 1;
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v.it_interval.tv_usec = 0;
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v.it_value = v.it_interval;
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signal(SIGALRM, progress_interval);
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setitimer(ITIMER_REAL, &v, NULL);
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fprintf(stderr, "Generating pack...\n");
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setup_progress_signal();
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}
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while (fgets(line, sizeof(line), stdin) != NULL) {
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