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eo: call stack can grow/shrink when not using mmap 

- if HAVE_MMAP call stack do not shrink and abort() when should grow
- otherwise it's a growing/shrinking stack using realloc
This commit is contained in:
Jérémy Zurcher 2014-09-23 10:47:24 +02:00
parent 88c5996dc1
commit 389c6d35f2
1 changed files with 13 additions and 7 deletions
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20
src/lib/eo/eo.c
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@ -314,20 +314,27 @@ _eo_call_stack_mem_alloc(size_t size)
static void
_eo_call_stack_mem_resize(void **ptr EINA_UNUSED, size_t newsize, size_t size)
{
// resize call stack down - currently won't ever be called
// FIXME we don't grow
if (newsize > size)
{
CRI("eo call stack overflow, abort.");
abort();
}
// FIXME resize call stack down
return;
size_t addr = MEM_PAGE_SIZE * ((newsize + MEM_PAGE_SIZE - 1) /
MEM_PAGE_SIZE);
madvise(((unsigned char *)*ptr) + addr, size - addr, MADV_DONTNEED);
#else
static void
_eo_call_stack_mem_resize(void **ptr EINA_UNUSED, size_t newsize EINA_UNUSED, size_t size EINA_UNUSED)
_eo_call_stack_mem_resize(void **ptr, size_t newsize, size_t size EINA_UNUSED)
{
// just grow in regular cases
*ptr = realloc(*ptr, newsize);
if (!*ptr)
{
CRI("eo call stack resize failed, abort.");
abort();
}
#endif
}
@ -427,10 +434,9 @@ _eo_call_stack_resize(Eo_Call_Stack *stack, Eina_Bool grow)
frame_offset = stack->frame_ptr - stack->frames;
DBG("resize from %lu to %lu", (long unsigned int)sz, (long unsigned int)next_sz);
if (!grow)
_eo_call_stack_mem_resize((void **)&(stack->frames),
next_sz * sizeof(Eo_Stack_Frame),
sz * sizeof(Eo_Stack_Frame));
_eo_call_stack_mem_resize((void **)&(stack->frames),
next_sz * sizeof(Eo_Stack_Frame),
sz * sizeof(Eo_Stack_Frame));
if (!stack->frames)
{
CRI("unable to resize call stack, abort.");