08-31-2005
You cannot predict the size of an executable. Inlining often results in LARGER code blocks, not smaller. Note the word "often". Compilers do fun things when they optimize.
Compilers are not duty-bound to optimize just because you think they should.
If you use complex, tricky code compilers will often decide not to optimize.
HPUX C compilers do this - they back down optimization levels when presented with really convoluted code.
The only way I could imagine the size decreasing is because you invoke the inline function call in just one place in your code, or that some other optimization was turned off/on because of the inline function.
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LEARN ABOUT FREEBSD
pcap_compile
PCAP_COMPILE(3) Library Functions Manual PCAP_COMPILE(3)
NAME
pcap_compile - compile a filter expression
SYNOPSIS
#include <pcap/pcap.h>
int pcap_compile(pcap_t *p, struct bpf_program *fp,
const char *str, int optimize, bpf_u_int32 netmask);
DESCRIPTION
pcap_compile() is used to compile the string str into a filter program. See pcap-filter(7) for the syntax of that string. program is a
pointer to a bpf_program struct and is filled in by pcap_compile(). optimize controls whether optimization on the resulting code is per-
formed. netmask specifies the IPv4 netmask of the network on which packets are being captured; it is used only when checking for IPv4
broadcast addresses in the filter program. If the netmask of the network on which packets are being captured isn't known to the program,
or if packets are being captured on the Linux "any" pseudo-interface that can capture on more than one network, a value of PCAP_NET-
MASK_UNKNOWN can be supplied; tests for IPv4 broadcast addresses will fail to compile, but all other tests in the filter program will be
OK.
RETURN VALUE
pcap_compile() returns 0 on success and -1 on failure. If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an argu-
ment to fetch or display the error text.
SEE ALSO
pcap(3), pcap_setfilter(3), pcap_freecode(3), pcap_geterr(3), pcap-filter(7)
1 December 2009 PCAP_COMPILE(3)