mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-08-09 03:10:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

set stackaddr if mmap is called in pthread_create

Browse source 
when calling pthread_create with a pthread_attr_t *attr,

if attr != NULL AND attr->stackaddr != 0,
then stack is not managed by cosmo
pt->spawn.stk = attr->stackaddr,
and so pt->attr.stackaddr = pt->spawn.stk is a no op

if attr == NULL OR attr->stackaddr == 0,
the stack is managed by cosmo,
pt->spawn.stk is from a successful mmap,
(and this is the oneline change)
so pt->attr.stackaddr SHOULD BE SET AS pt->spawn.stk
This commit is contained in:
ahgamut 2022-09-09 09:16:16 +05:30
parent 5140897c27
commit 06f401d46d
1 changed files with 9 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

9
libc/thread/pthread_create.c
View file

@ -196,6 +196,15 @@ int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
// we only need to save this to support pthread_getattr_np()
pt->attr = *attr;
// if attr->stackaddr == 0,
// the stack is managed by cosmo,
// pt->spawn.stk is from a successful mmap,
// and so pt->attr.stackaddr = pt->spawn.stk
pt->attr.stackaddr = pt->spawn.stk;
// if attr->stackaddr != 0,
// then stack is not managed by cosmo
// pt->attr.stackaddr = pt->spawn.stk = attr->stackaddr
// so the above line is a no-op.
// set initial status
switch (attr->detachstate) {