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Use sysconf() to get PAGE_SIZE

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Some systems use not 4096 page size (64KB for example).
This commit is contained in:
Koichi Sasada 2023-10-12 23:35:12 +09:00
parent 4387af1b4a
commit 10ba3fc302
1 changed files with 13 additions and 1 deletions
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14
thread_pthread_mn.c
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@ -116,8 +116,20 @@ thread_sched_wait_events(struct rb_thread_sched *sched, rb_thread_t *th, int fd,
/// stack management
static int
get_sysconf_page_size(void)
{
static long page_size = 0;
if (UNLIKELY(page_size == 0)) {
page_size = sysconf(_SC_PAGESIZE);
VM_ASSERT(page_size < INT_MAX);
}
return (int)page_size;
}
#define MSTACK_CHUNK_SIZE (512 * 1024 * 1024) // 512MB
#define MSTACK_PAGE_SIZE 4096
#define MSTACK_PAGE_SIZE get_sysconf_page_size()
#define MSTACK_CHUNK_PAGE_NUM (MSTACK_CHUNK_SIZE / MSTACK_PAGE_SIZE - 1) // 1 is start redzone
// 512MB chunk