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authorDenis Vlasenko2007-05-01 20:07:29 +0000
committerDenis Vlasenko2007-05-01 20:07:29 +0000
commitdcf4de20a1904bb31d498b6cc999a37f20b2783d (patch)
tree9c4c939bb250f37bd4f405b74723824cde1e8d7b /libbb/u_signal_names.c
parentf20de5bb42f9a4f2c8417f6a1a2db7e2f2cafd5b (diff)
downloadbusybox-dcf4de20a1904bb31d498b6cc999a37f20b2783d.zip
busybox-dcf4de20a1904bb31d498b6cc999a37f20b2783d.tar.gz
test: code size saving, no logic changes
ps: fix warning, make a bit smaller kill -l: make smaller & know much more signals function old new delta get_signum 121 153 +32 kill_main 826 843 +17 get_signame 44 36 -8 signals 252 224 -28 .rodata 131955 131923 -32 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/3 up/down: 49/-68) Total: -19 bytes
Diffstat (limited to 'libbb/u_signal_names.c')
-rw-r--r--libbb/u_signal_names.c148
1 files changed, 126 insertions, 22 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
index 52861d4..dc4c0b2 100644
--- a/libbb/u_signal_names.c
+++ b/libbb/u_signal_names.c
@@ -9,20 +9,111 @@
#include "libbb.h"
-static const struct signal_name {
- int number;
- char name[5];
-} signals[] = {
+static const char signals[32][7] = {
// SUSv3 says kill must support these, and specifies the numerical values,
// http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
// TODO: "[SIG]EXIT" shouldn't work for kill, right?
- {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"}, {6, "ABRT"}, {9, "KILL"},
- {14, "ALRM"}, {15, "TERM"},
+ // {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
+ // {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
// And Posix adds the following:
- {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
- {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
- {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
- {SIGTTOU, "TTOU"}
+ // {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
+ // {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
+ // {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
+ // {SIGTTOU, "TTOU"}
+ [0] = "EXIT",
+#ifdef SIGHUP
+ [SIGHUP ] = "HUP",
+#endif
+#ifdef SIGINT
+ [SIGINT ] = "INT",
+#endif
+#ifdef SIGQUIT
+ [SIGQUIT ] = "QUIT",
+#endif
+#ifdef SIGILL
+ [SIGILL ] = "ILL",
+#endif
+#ifdef SIGTRAP
+ [SIGTRAP ] = "TRAP",
+#endif
+#ifdef SIGABRT
+ [SIGABRT ] = "ABRT",
+#endif
+#ifdef SIGBUS
+ [SIGBUS ] = "BUS",
+#endif
+#ifdef SIGFPE
+ [SIGFPE ] = "FPE",
+#endif
+#ifdef SIGKILL
+ [SIGKILL ] = "KILL",
+#endif
+#ifdef SIGUSR1
+ [SIGUSR1 ] = "USR1",
+#endif
+#ifdef SIGSEGV
+ [SIGSEGV ] = "SEGV",
+#endif
+#ifdef SIGUSR2
+ [SIGUSR2 ] = "USR2",
+#endif
+#ifdef SIGPIPE
+ [SIGPIPE ] = "PIPE",
+#endif
+#ifdef SIGALRM
+ [SIGALRM ] = "ALRM",
+#endif
+#ifdef SIGTERM
+ [SIGTERM ] = "TERM",
+#endif
+#ifdef SIGSTKFLT
+ [SIGSTKFLT] = "STKFLT",
+#endif
+#ifdef SIGCHLD
+ [SIGCHLD ] = "CHLD",
+#endif
+#ifdef SIGCONT
+ [SIGCONT ] = "CONT",
+#endif
+#ifdef SIGSTOP
+ [SIGSTOP ] = "STOP",
+#endif
+#ifdef SIGTSTP
+ [SIGTSTP ] = "TSTP",
+#endif
+#ifdef SIGTTIN
+ [SIGTTIN ] = "TTIN",
+#endif
+#ifdef SIGTTOU
+ [SIGTTOU ] = "TTOU",
+#endif
+#ifdef SIGURG
+ [SIGURG ] = "URG",
+#endif
+#ifdef SIGXCPU
+ [SIGXCPU ] = "XCPU",
+#endif
+#ifdef SIGXFSZ
+ [SIGXFSZ ] = "XFSZ",
+#endif
+#ifdef SIGVTALRM
+ [SIGVTALRM] = "VTALRM",
+#endif
+#ifdef SIGPROF
+ [SIGPROF ] = "PROF",
+#endif
+#ifdef SIGWINCH
+ [SIGWINCH ] = "WINCH",
+#endif
+#ifdef SIGPOLL
+ [SIGPOLL ] = "POLL",
+#endif
+#ifdef SIGPWR
+ [SIGPWR ] = "PWR",
+#endif
+#ifdef SIGSYS
+ [SIGSYS ] = "SYS",
+#endif
};
// Convert signal name to number.
@@ -32,12 +123,28 @@ int get_signum(const char *name)
int i;
i = bb_strtou(name, NULL, 10);
- if (!errno) return i;
- for (i = 0; i < sizeof(signals) / sizeof(struct signal_name); i++)
- if (strcasecmp(name, signals[i].name) == 0
- || (strncasecmp(name, "SIG", 3) == 0
- && strcasecmp(&name[3], signals[i].name) == 0))
- return signals[i].number;
+ if (!errno)
+ return i;
+ if (strncasecmp(name, "SIG", 3) == 0)
+ name += 3;
+ for (i = 0; i < sizeof(signals) / sizeof(signals[0]); i++)
+ if (strcasecmp(name, signals[i]) == 0)
+ return i;
+
+#if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
+ /* These are aliased to other names */
+ if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
+#ifdef SIGIO
+ if (!name[2])
+ return SIGIO;
+#endif
+#ifdef SIGIOT
+ if ((name[2] | 0x20) == 't' && !name[3])
+ return SIGIOT;
+#endif
+ }
+#endif
+
return -1;
}
@@ -45,12 +152,9 @@ int get_signum(const char *name)
const char *get_signame(int number)
{
- int i;
-
- for (i=0; i < sizeof(signals) / sizeof(struct signal_name); i++) {
- if (number == signals[i].number) {
- return signals[i].name;
- }
+ if ((unsigned)number < sizeof(signals) / sizeof(signals[0])) {
+ if (signals[number][0]) /* if it's not an empty str */
+ return signals[number];
}
return itoa(number);