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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2012-03-19 09:36:42 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2012-03-19 09:36:42 +0100 |
| commit | 9fd4f96d2a2527ac7ca90c156bfc11ce10118684 (patch) | |
| tree | 28fc6ab201afec903b58fad7b21dcaf57085af9f /signal.c | |
| parent | 1be02798f56f3ee940c9cbc047be627fd12eef16 (diff) | |
| download | strace-9fd4f96d2a2527ac7ca90c156bfc11ce10118684.tar.gz strace-9fd4f96d2a2527ac7ca90c156bfc11ce10118684.tar.bz2 strace-9fd4f96d2a2527ac7ca90c156bfc11ce10118684.tar.xz | |
Optimize code if we have only one personality
On i386:
text data bss dec hex filename
238025 672 18980 257677 3ee8d strace.before
237389 704 18944 257037 3ec0d strace
* defs.h: Define PERSONALITY0_WORDSIZE as sizeof(long) if not defined.
Introduce new define, current_wordsize as
(personality_wordsize[current_personality]).
Make set_personality() no-op, current_personality constant zero,
current_wordsize as PERSONALITY0_WORDSIZE if we have only one personality.
* count.c (call_summary): Use current_wordsize instead of
personality_wordsize[current_personality].
* desc.c (printflock): Likewise.
* file.c (sys_utime): Likewise.
* io.c (tprint_iov): Likewise.
* process.c (printargv): Likewise.
* resource.c (decode_rlimit): Likewise.
* signal.c (sys_kill): Likewise.
(sys_rt_sigaction): Likewise.
* time.c (sprinttv): Likewise.
(sprint_timespec): Likewise.
(printitv_bitness): Likewise.
(tprint_timex): Likewise.
(printsigevent): Likewise.
* util.c (dumpiov): Likewise.
(umoven): Likewise.
(umovestr): Likewise.
* syscall.c: Initialize sysent to sysent0 etc.
Make current_personality, personality_wordsize[], set_personality()
conditional on SUPPORTED_PERSONALITIES > 1.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'signal.c')
| -rw-r--r-- | signal.c | 5 |
1 files changed, 2 insertions, 3 deletions
@@ -1226,7 +1226,7 @@ sys_kill(struct tcb *tcp) long pid = tcp->u_arg[0]; #if SUPPORTED_PERSONALITIES > 1 /* Sign-extend a 32-bit value when that's what it is. */ - if (personality_wordsize[current_personality] < sizeof pid) + if (current_wordsize < sizeof pid) pid = (long) (int) pid; #endif tprintf("%ld, %s", pid, signame(tcp->u_arg[1])); @@ -1335,8 +1335,7 @@ sys_rt_sigaction(struct tcb *tcp) } #if SUPPORTED_PERSONALITIES > 1 #if SIZEOF_LONG > 4 - if (personality_wordsize[current_personality] != sizeof(sa.sa_flags) - && personality_wordsize[current_personality] == 4) { + if (current_wordsize != sizeof(sa.sa_flags) && current_wordsize == 4) { struct new_sigaction32 sa32; r = umove(tcp, addr, &sa32); if (r >= 0) { |