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Unify writev and write operations in check_reserved_signal_

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This commit is contained in:
Nobuyoshi Nakada 2023-07-18 00:06:57 +09:00
parent 19486ebd72
commit ebeecbd575
Notes: git 2023-07-18 15:07:13 +00:00 
Merged: https://github.com/ruby/ruby/pull/8090
1 changed files with 14 additions and 14 deletions
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28
signal.c
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@ -961,27 +961,27 @@ check_reserved_signal_(const char *name, size_t name_len)
if (prev) {
ssize_t RB_UNUSED_VAR(err);
static const int stderr_fd = 2;
#define NOZ(name, str) name[sizeof(str)-1] = str
static const char NOZ(msg1, " received in ");
static const char NOZ(msg2, " handler\n");
#ifdef HAVE_WRITEV
struct iovec iov[4];
iov[0].iov_base = (void *)name;
iov[0].iov_len = name_len;
iov[1].iov_base = (void *)msg1;
iov[1].iov_len = sizeof(msg1);
iov[2].iov_base = (void *)prev;
iov[2].iov_len = strlen(prev);
iov[3].iov_base = (void *)msg2;
iov[3].iov_len = sizeof(msg2);
err = writev(2, iov, 4);
int i = 0;
# define W(str, len) \
iov[i++] = (struct iovec){.iov_base = (void *)(str), .iov_len = (len)}
#else
err = write(2, name, name_len);
err = write(2, msg1, sizeof(msg1));
err = write(2, prev, strlen(prev));
err = write(2, msg2, sizeof(msg2));
# define W(str, len) err = write(stderr_fd, (str), (len))
#endif
W(name, name_len);
W(msg1, sizeof(msg1));
W(prev, strlen(prev));
W(msg2, sizeof(msg2));
# undef W
#ifdef HAVE_WRITEV
err = writev(stderr_fd, iov, i);
#endif
ruby_abort();
}