Fcalva/chibi-scheme
1
0
Fork 0
mirror of https://github.com/ashinn/chibi-scheme.git synced 2025-05-22 07:09:18 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Adjusting context parents stacks when growing stack.

Browse source
This commit is contained in:
Alex Shinn 2011-02-27 20:51:52 +09:00
parent 01dd712a50
commit a7c346806c
1 changed files with 9 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
vm.c
View file

@ -484,8 +484,8 @@ static sexp make_opcode_procedure (sexp ctx, sexp op, sexp_uint_t i) {
#if SEXP_USE_CHECK_STACK
static int sexp_grow_stack (sexp ctx) {
sexp stack, *from, *to;
int i, size = sexp_stack_length(sexp_context_stack(ctx)), new_size;
sexp stack, old_stack = sexp_context_stack(ctx), *from, *to;
int i, size = sexp_stack_length(old_stack), new_size;
new_size = size * 2;
if (new_size > SEXP_MAX_STACK_SIZE) {
if (size == SEXP_MAX_STACK_SIZE)
@ -494,13 +494,17 @@ static int sexp_grow_stack (sexp ctx) {
}
stack = sexp_alloc_tagged(ctx, (sexp_sizeof(stack)+sizeof(sexp)*new_size),
SEXP_STACK);
if (!stack || sexp_exceptionp(stack))
return 0;
sexp_stack_length(stack) = new_size;
sexp_stack_top(stack) = sexp_context_top(ctx);
from = sexp_stack_data(sexp_context_stack(ctx));
from = sexp_stack_data(old_stack);
to = sexp_stack_data(stack);
for (i=sexp_context_top(ctx); i>=0; i--)
for (i=sexp_context_top(ctx)+1; i>=0; i--)
to[i] = from[i];
sexp_context_stack(ctx) = stack;
for (; ctx; ctx=sexp_context_parent(ctx))
if (sexp_context_stack(ctx) == old_stack)
sexp_context_stack(ctx) = stack;
return 1;
}
#endif