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| author | Nicholas Clark <nick@ccl4.org> | 2008-09-12 00:19:51 +0000 |
|---|---|---|
| committer | David Mitchell <davem@iabyn.com> | 2009-03-29 18:19:12 +0100 |
| commit | 0bd07ba73c7a2a849e7fc046ab2530d9522c7bcd (patch) | |
| tree | fa8b7d3c907c85607d4fbcc83433c6bfaf183381 /proto.h | |
| parent | 03e4800518c01563fdda5c145899d4f56a95e72d (diff) | |
| download | perl-0bd07ba73c7a2a849e7fc046ab2530d9522c7bcd.tar.gz | |
Create a direct lookup hash for ->isa() lookup, by retaining the
de-duping hash used by S_mro_get_linear_isa_dfs(). Provide a new
function Perl_get_isa_hash() to lazily retrieve this. (Which could
actually be static if S_isa_lookup() and Perl_sv_derived_from()
moved into mro.c.) Make S_isa_lookup() use this lookup hash in place
of a linear walk of the linear isa. This should turn isa lookups from
O(n) to O(1), which should make heavy users of ->isa() faster.
(eg PPI, and hence Perl Critic).
p4raw-id: //depot/perl@34354
(cherry-picked from commit a49ba3fcbe357fbacf7b9898df08daa2cbdfc8c4)
Diffstat (limited to 'proto.h')
| -rw-r--r-- | proto.h | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -6613,6 +6613,11 @@ PERL_CALLCONV void Perl_sys_init3(int* argc, char*** argv, char*** env) PERL_CALLCONV void Perl_sys_term(void); +PERL_CALLCONV HV * Perl_get_isa_hash(pTHX_ HV *const stash) + __attribute__nonnull__(pTHX_1); +#define PERL_ARGS_ASSERT_GET_ISA_HASH \ + assert(stash) + END_EXTERN_C /* |