diff options
| author | Denis Vlasenko | 2007-11-23 03:39:45 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2007-11-23 03:39:45 +0000 |
| commit | ff2b6d21853ca6417a43c06f37a32201f881245d (patch) | |
| tree | e29af66c29c2a7cfeb7f7f4ca7c904704def2a5e /sysklogd/logread.c | |
| parent | 6884f665bd7bc101f56ff9047afaffbc06dc99e2 (diff) | |
| download | busybox-ff2b6d21853ca6417a43c06f37a32201f881245d.zip busybox-ff2b6d21853ca6417a43c06f37a32201f881245d.tar.gz | |
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 6567df3..51fb7a0 100644 --- a/sysklogd/logread.c +++ b/sysklogd/logread.c @@ -18,16 +18,30 @@ enum { KEY_ID = 0x414e4547 }; /* "GENA" */ -static struct shbuf_ds { +struct shbuf_ds { int32_t size; // size of data - 1 int32_t tail; // end of message list char data[1]; // messages -} *shbuf; - -// Semaphore operation structures -static struct sembuf SMrup[1] = {{0, -1, IPC_NOWAIT | SEM_UNDO}}; // set SMrup -static struct sembuf SMrdn[2] = {{1, 0}, {0, +1, SEM_UNDO}}; // set SMrdn - +}; + +static const struct sembuf init_sem[3] = { + {0, -1, IPC_NOWAIT | SEM_UNDO}, + {1, 0}, {0, +1, SEM_UNDO} +}; + +struct globals { + struct sembuf SMrup[1]; // {0, -1, IPC_NOWAIT | SEM_UNDO}, + struct sembuf SMrdn[2]; // {1, 0}, {0, +1, SEM_UNDO} + struct shbuf_ds *shbuf; +}; +#define G (*(struct globals*)&bb_common_bufsiz1) +#define SMrup (G.SMrup) +#define SMrdn (G.SMrdn) +#define shbuf (G.shbuf) +#define INIT_G() \ + do { \ + memcpy(SMrup, init_sem, sizeof(init_sem)); \ + } while (0) static void error_exit(const char *str) ATTRIBUTE_NORETURN; static void error_exit(const char *str) |