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Limit mcode alloc probing, depending on the available pool size.

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Contributed by Alexey Kopytov.
This commit is contained in:
Mike Pall 2017-03-08 23:01:47 +01:00
parent 4e308361bf
commit d62459fc39
1 changed files with 2 additions and 1 deletions
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3
src/lj_mcode.c
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@ -230,7 +230,8 @@ static void *mcode_alloc(jit_State *J, size_t sz)
/* First try a contiguous area below the last one. */
uintptr_t hint = J->mcarea ? (uintptr_t)J->mcarea - sz : 0;
int i;
for (i = 0; i < 32; i++) { /* 32 attempts ought to be enough ... */
/* Limit probing iterations, depending on the available pool size. */
for (i = 0; i < LJ_TARGET_JUMPRANGE; i++) {
if (mcode_validptr(hint)) {
void *p = mcode_alloc_at(J, hint, sz, MCPROT_GEN);