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cache 8 boot programs

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* libguile/vm.c (vm_make_boot_program): Cache boot programs for nargs <
  8.
This commit is contained in:
Andy Wingo 2009-01-31 21:54:59 +01:00
parent 9bb8012dd6
commit d2d7acd5c1
1 changed files with 19 additions and 1 deletions
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20
libguile/vm.c
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@ -268,7 +268,7 @@ static SCM make_u8vector (const scm_t_uint8 *bytes, size_t len)
}
static SCM
vm_make_boot_program (long nargs)
really_make_boot_program (long nargs)
{
scm_byte_t bytes[] = {0, 0, 0, 0,
0, 0, 0, 0,
@ -280,6 +280,24 @@ vm_make_boot_program (long nargs)
return scm_make_program (scm_bytecode_to_objcode (make_u8vector (bytes, sizeof(bytes))),
SCM_BOOL_F, SCM_EOL);
}
#define NUM_BOOT_PROGS 8
static SCM
vm_make_boot_program (long nargs)
{
static SCM programs[NUM_BOOT_PROGS] = { 0, };
if (SCM_UNLIKELY (!programs[0]))
{
int i;
for (i = 0; i < NUM_BOOT_PROGS; i++)
programs[i] = scm_permanent_object (really_make_boot_program (i));
}
if (SCM_LIKELY (nargs < NUM_BOOT_PROGS))
return programs[nargs];
else
return really_make_boot_program (nargs);
}
/*