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Code Releases Activity

Stored pages release routine

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This commit is contained in:
Maria Matejka 2021-11-23 11:13:11 +00:00
parent 4ba991f19c
commit 821344c781
2 changed files with 33 additions and 0 deletions
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29
sysdep/unix/alloc.c
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@ -135,3 +135,32 @@ free_sys_page(void *ptr)
#endif
free(ptr);
}
void
check_stored_pages(void)
{
#ifdef ENOMEM
if (atomic_load_explicit(&global_page_list_not_empty, memory_order_relaxed) == 0)
return;
for (uint limit = 0; limit < 256; limit++)
{
GLOBAL_PAGE_SPIN_LOCK;
void *ptr = HEAD(global_page_list);
if (!NODE_VALID(ptr))
{
atomic_store_explicit(&global_page_list_not_empty, 0, memory_order_relaxed);
GLOBAL_PAGE_SPIN_UNLOCK;
return;
}
rem_node(ptr);
if (munmap(ptr, page_size) < 0)
if (errno == ENOMEM)
add_tail(&global_page_list, ptr);
else
bug("munmap(%p) failed: %m", ptr);
GLOBAL_PAGE_SPIN_UNLOCK;
}
#endif
}

4
sysdep/unix/io.c
View File

@ -2193,6 +2193,7 @@ static int short_loops = 0;
#define WORK_EVENTS_MAX 10
void pipe_drain(int fd);
void check_stored_pages(void);
void
io_loop(void)
@ -2215,6 +2216,9 @@ io_loop(void)
timers_fire(&main_birdloop.time, 1);
io_close_event();
/* Try to release some memory if possible */
check_stored_pages();
// FIXME
poll_tout = (events ? 0 : 3000); /* Time in milliseconds */
if (t = timers_first(&main_birdloop.time))