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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-23 03:39:45 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-11-23 03:39:45 +0000 |
| commit | ff2b6d21853ca6417a43c06f37a32201f881245d (patch) | |
| tree | e29af66c29c2a7cfeb7f7f4ca7c904704def2a5e /sysklogd/logread.c | |
| parent | 6884f665bd7bc101f56ff9047afaffbc06dc99e2 (diff) | |
| download | busybox-w32-ff2b6d21853ca6417a43c06f37a32201f881245d.tar.gz busybox-w32-ff2b6d21853ca6417a43c06f37a32201f881245d.tar.bz2 busybox-w32-ff2b6d21853ca6417a43c06f37a32201f881245d.zip | |
logread: eliminate usage of data/bss
ifup: don't remove virtual iface prefixes (eth0:0)
function old new delta
shbuf 4 - -4
SMrup 6 - -6
SMrdn 12 - -12
static.label_buf 20 4 -16
get_var 158 140 -18
------------------------------------------------------------------------------
(add/remove: 0/3 grow/shrink: 0/2 up/down: 0/-56) Total: -56 bytes
text data bss dec hex filename
783501 962 9260 793723 c1c7b busybox_old
783483 942 9244 793669 c1c45 busybox_unstripped
Diffstat (limited to 'sysklogd/logread.c')
| -rw-r--r-- | sysklogd/logread.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/sysklogd/logread.c b/sysklogd/logread.c index 6567df374..51fb7a0ba 100644 --- a/sysklogd/logread.c +++ b/sysklogd/logread.c | |||
| @@ -18,16 +18,30 @@ | |||
| 18 | 18 | ||
| 19 | enum { KEY_ID = 0x414e4547 }; /* "GENA" */ | 19 | enum { KEY_ID = 0x414e4547 }; /* "GENA" */ |
| 20 | 20 | ||
| 21 | static struct shbuf_ds { | 21 | struct shbuf_ds { |
| 22 | int32_t size; // size of data - 1 | 22 | int32_t size; // size of data - 1 |
| 23 | int32_t tail; // end of message list | 23 | int32_t tail; // end of message list |
| 24 | char data[1]; // messages | 24 | char data[1]; // messages |
| 25 | } *shbuf; | 25 | }; |
| 26 | 26 | ||
| 27 | // Semaphore operation structures | 27 | static const struct sembuf init_sem[3] = { |
| 28 | static struct sembuf SMrup[1] = {{0, -1, IPC_NOWAIT | SEM_UNDO}}; // set SMrup | 28 | {0, -1, IPC_NOWAIT | SEM_UNDO}, |
| 29 | static struct sembuf SMrdn[2] = {{1, 0}, {0, +1, SEM_UNDO}}; // set SMrdn | 29 | {1, 0}, {0, +1, SEM_UNDO} |
| 30 | 30 | }; | |
| 31 | |||
| 32 | struct globals { | ||
| 33 | struct sembuf SMrup[1]; // {0, -1, IPC_NOWAIT | SEM_UNDO}, | ||
| 34 | struct sembuf SMrdn[2]; // {1, 0}, {0, +1, SEM_UNDO} | ||
| 35 | struct shbuf_ds *shbuf; | ||
| 36 | }; | ||
| 37 | #define G (*(struct globals*)&bb_common_bufsiz1) | ||
| 38 | #define SMrup (G.SMrup) | ||
| 39 | #define SMrdn (G.SMrdn) | ||
| 40 | #define shbuf (G.shbuf) | ||
| 41 | #define INIT_G() \ | ||
| 42 | do { \ | ||
| 43 | memcpy(SMrup, init_sem, sizeof(init_sem)); \ | ||
| 44 | } while (0) | ||
| 31 | 45 | ||
| 32 | static void error_exit(const char *str) ATTRIBUTE_NORETURN; | 46 | static void error_exit(const char *str) ATTRIBUTE_NORETURN; |
| 33 | static void error_exit(const char *str) | 47 | static void error_exit(const char *str) |