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authorDenys Vlasenko2011-01-03 12:51:13 +0100
committerDenys Vlasenko2011-01-03 12:51:13 +0100
commit7b276fc17594b89040f1eda054858860c1dc1522 (patch)
tree3f70f419e82343f3017871882c215b779b326208 /libbb/u_signal_names.c
parent92ffe0571a49077f06fc65bf0ada753b30fd8a53 (diff)
downloadbusybox-7b276fc17594b89040f1eda054858860c1dc1522.zip
busybox-7b276fc17594b89040f1eda054858860c1dc1522.tar.gz
kill[all[5]],pkill: more correct, and smaller, SIGRTMIN/MAX code
function old new delta __libc_current_sigrtmin 6 - -6 __libc_current_sigrtmax 6 - -6 get_signum 339 295 -44 ------------------------------------------------------------------------------ (add/remove: 0/3 grow/shrink: 0/1 up/down: 0/-56) Total: -56 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'libbb/u_signal_names.c')
-rw-r--r--libbb/u_signal_names.c29
1 files changed, 19 insertions, 10 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
index 53ccdd1..93cebe2 100644
--- a/libbb/u_signal_names.c
+++ b/libbb/u_signal_names.c
@@ -161,22 +161,31 @@ int FAST_FUNC get_signum(const char *name)
#if ENABLE_FEATURE_RTMINMAX
# if defined(SIGRTMIN) && defined(SIGRTMAX)
- if (strncasecmp(name, "RTMAX", 5) == 0) {
+/* libc may use some rt sigs for pthreads and therefore "remap" SIGRTMIN/MAX,
+ * but we want to use "raw" SIGRTMIN/MAX. Underscored names, if exist, provide
+ * them. If they don't exist, fall back to non-underscored ones: */
+# if !defined(__SIGRTMIN)
+# define __SIGRTMIN SIGRTMIN
+# endif
+# if !defined(__SIGRTMAX)
+# define __SIGRTMAX SIGRTMAX
+# endif
+ if (strncasecmp(name, "RTMIN", 5) == 0) {
if (!name[5])
- return SIGRTMAX;
- if (name[5] == '-') {
+ return __SIGRTMIN;
+ if (name[5] == '+') {
i = bb_strtou(name + 6, NULL, 10);
- if (!errno && i <= SIGRTMAX - SIGRTMIN)
- return SIGRTMAX - i;
+ if (!errno && i <= __SIGRTMAX - __SIGRTMIN)
+ return __SIGRTMIN + i;
}
}
- if (strncasecmp(name, "RTMIN", 5) == 0) {
+ else if (strncasecmp(name, "RTMAX", 5) == 0) {
if (!name[5])
- return SIGRTMIN;
- if (name[5] == '+') {
+ return __SIGRTMAX;
+ if (name[5] == '-') {
i = bb_strtou(name + 6, NULL, 10);
- if (!errno && i <= SIGRTMAX - SIGRTMIN)
- return SIGRTMIN + i;
+ if (!errno && i <= __SIGRTMAX - __SIGRTMIN)
+ return __SIGRTMAX - i;
}
}
# endif